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WO2012023360A1 - Procédé et dispositif de fabrication de dispositifs d'entrée de position - Google Patents

Procédé et dispositif de fabrication de dispositifs d'entrée de position Download PDF

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Publication number
WO2012023360A1
WO2012023360A1 PCT/JP2011/065844 JP2011065844W WO2012023360A1 WO 2012023360 A1 WO2012023360 A1 WO 2012023360A1 JP 2011065844 W JP2011065844 W JP 2011065844W WO 2012023360 A1 WO2012023360 A1 WO 2012023360A1
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WO
WIPO (PCT)
Prior art keywords
glass substrate
chemical strengthening
layer
position input
manufacturing
Prior art date
Application number
PCT/JP2011/065844
Other languages
English (en)
Japanese (ja)
Inventor
吉澤　武徳
Original Assignee
シャープ株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to JP2012529525A priority Critical patent/JP5451886B2/ja
Priority to CN201180040116.2A priority patent/CN103069366B/zh
Publication of WO2012023360A1 publication Critical patent/WO2012023360A1/fr

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C21/00—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface
    • C03C21/001—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions
    • C03C21/002—Treatment of glass, not in the form of fibres or filaments, by diffusing ions or metals in the surface in liquid phase, e.g. molten salts, solutions to perform ion-exchange between alkali ions
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0445—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using two or more layers of sensing electrodes, e.g. using two layers of electrodes separated by a dielectric layer
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes

Definitions

  • the present invention relates to a method for manufacturing a position input device and a device for manufacturing a position input device.
  • This type of liquid crystal display device includes a display module in which a liquid crystal panel for displaying an image and a touch panel disposed on the display surface side of the liquid crystal panel are bonded to each other in an opposing manner.
  • the touch panel has translucency and can input position information within the display surface of the liquid crystal panel by touching it with a finger or a touch pen, for example. As a result, an intuitive operation is possible in which the user directly touches the image displayed on the liquid crystal panel.
  • the present invention has been completed based on the above circumstances, and provides a position input device manufacturing method and a position input device manufacturing apparatus that can be reduced in cost, weight, and thickness. For the purpose.
  • the manufacturing method of the position input device of the present invention includes a primary strengthening step of forming a primary strengthening layer on the surface of a glass substrate base material from which a plurality of glass substrates can be taken out, and the primary strengthening layer of the glass substrate base material.
  • the pattern layer is formed on the glass substrate base material from which a plurality of glass substrates can be taken out. Compared with the case where the pattern layers are individually formed on the individual glass substrates, efficient processing can be performed and the manufacturing cost can be reduced. Furthermore, since the primary strengthening layer is first formed on the glass substrate base material in the primary strengthening step, the pattern layer is formed on the glass substrate base material in the pattern forming step, so the primary strengthening layer is formed. Therefore, it is possible to avoid the high temperature that can act on the pattern layer from acting on the pattern layer, thereby preventing the pattern layer from being damaged.
  • the manufacturing is performed according to the procedure in which the primary reinforcing layer is first formed on the glass substrate base material and then the pattern layer is formed, and then the individual glass substrates are divided, the individual steps are accompanied with the dividing step.
  • the primary reinforcing layer does not exist on the end surface of the glass substrate
  • the secondary reinforcing layer is formed on the end surface of the glass substrate in the secondary strengthening step, the strength is reduced. Therefore, a sufficiently high strength can be ensured.
  • a secondary strengthening layer is formed by performing chemical strengthening treatment by ion exchange on the end face of the glass substrate.
  • the secondary reinforcing layer can be formed without heating and without heating the glass substrate until the softening point is reached. Thereby, it is possible to form the secondary reinforcing layer without damaging the pattern layer formed on the glass substrate. In addition, compared with the case where strengthening is achieved by forming a coating layer on the end face of the glass substrate, the secondary reinforcing layer formed by the chemical strengthening treatment is not lost due to friction or the like, and has a high strength over time. Can be maintained.
  • the chemical strengthening process by ion exchange is performed a plurality of times at intervals, so that the following actions and effects can be obtained.
  • the chemical strengthening process is performed at once without any interval, the end face of the glass substrate may be rapidly cooled along with the chemical strengthening process. There is a possibility that the glass substrate is cracked by promoting the growth of slight scratches and cracks existing from the beginning.
  • the chemical strengthening treatment is performed so as not to rapidly cool the end face of the glass substrate, the thickness of the formed secondary reinforcing layer becomes insufficient, and the strength may be insufficient.
  • the thickness of the glass substrate having a sufficient thickness without rapidly cooling the end face of the glass substrate.
  • the next reinforcing layer can be formed.
  • the tempered glass is provided separately from the position input device made of a glass substrate that does not have each tempered layer as in the past. Compared with the case where the position input device is protected by using the device, the number of parts can be reduced, so that the cost, weight, thickness, etc. can be reduced.
  • the following configuration is preferable.
  • the end surface of the glass substrate is irradiated with laser light. If it does in this way, an end surface among glass substrates can be heated locally and efficiently.
  • the heating temperature of the end face of the glass substrate is lower than the softening point of the glass substrate. In this way, if the heating temperature is the same as or higher than the softening point of the glass substrate, heat can be transferred to the pattern layer formed on the plate surface of the glass substrate and the pattern layer can be damaged.
  • the heating temperature is the same as or higher than the softening point of the glass substrate, heat can be transferred to the pattern layer formed on the plate surface of the glass substrate and the pattern layer can be damaged.
  • such a problem can be made difficult to occur.
  • the end surface of the glass substrate is heated over the entire circumference, and in the chemical strengthening treatment step, the end surface of the glass substrate is chemically strengthened over the entire circumference. In this way, since the secondary reinforcing layer can be formed over the entire circumference of the end surface of the glass substrate, the strength of the glass substrate can be further improved.
  • the chemical strengthening treatment liquid is sprayed on an end surface of the glass substrate. If it does in this way, a chemical strengthening process liquid can be made to adhere locally and efficiently with respect to an end surface among glass substrates.
  • the chemical strengthening is performed with respect to the end surface from a plurality of nozzles arranged in parallel along the transport direction while transporting the glass substrate in a direction along the plate surface.
  • the treatment liquid is sprayed. If it does in this way, since a chemical strengthening process liquid can be made to adhere several times at intervals with respect to the end surface, conveying a glass substrate, it is excellent in manufacturing efficiency.
  • the end surface of the glass substrate is heated by a heating device disposed on the upstream side in the transport direction of the glass substrate with respect to the plurality of nozzles related to the chemical strengthening treatment step. If it does in this way, since an end surface is heated, conveying a glass substrate, a chemical strengthening process liquid can be made to adhere several times at intervals, and it is further excellent in manufacturing efficiency.
  • the chemical strengthening treatment liquid is sprayed to the end face from both sides of the glass substrate. If it does in this way, a chemical strengthening processing liquid can be made to adhere efficiently to the end face of a glass substrate, and it is excellent in manufacturing efficiency.
  • the chemical strengthening treatment solution is sprayed onto the end surface of the glass substrate in the form of a mist. If it does in this way, a chemical strengthening processing liquid can be uniformly attached with the uniform density
  • a molten salt containing alkali metal ions is used as the chemical strengthening treatment liquid.
  • the alkali metal ions contained in the molten salt forming the chemical strengthening treatment liquid are exchanged with the alkali metal ions present on the surface of the glass substrate.
  • a secondary reinforcing layer made of a compressed layer in which compressive stress remains on the end face of the glass substrate is formed.
  • the surface of the glass substrate is subjected to a chemical strengthening process or an air cooling strengthening process to form a compressed layer as the primary strengthening layer. If it does in this way, the intensity
  • the edge part process process which processes the edge part of the said glass substrate and arranges an external shape is provided. If it does in this way, after processing the edge part of a glass substrate in an edge part process process and adjusting the external shape, a secondary reinforcement layer can be formed in the end surface of a glass substrate in a secondary reinforcement process.
  • the position input device manufacturing apparatus of the present invention includes a primary strengthening device that forms a primary strengthening layer on the surface of a glass substrate base material from which a plurality of glass substrates can be taken out, and A pattern forming apparatus that forms a pattern layer for detecting an input position on the outside of the primary reinforcing layer of the glass substrate base material, and a plurality of the glasses by dividing the glass substrate base material
  • a splitting device for taking out the substrate, and a secondary strengthening device for forming a secondary strengthening layer by performing chemical strengthening treatment by ion exchange a plurality of times at intervals on the end face of the taken-out glass substrate are provided.
  • the pattern layer is formed on the glass substrate base material from which a plurality of glass substrates can be taken out. Then, compared with the case where the pattern layers are individually formed on the individual glass substrates, efficient processing can be performed, and the manufacturing cost can be reduced. Furthermore, since the primary strengthening layer is first formed on the glass substrate base material with the primary strengthening device, the pattern layer is formed on the glass substrate base material with the pattern forming device, so the primary strengthening layer is formed. Therefore, it is possible to avoid the high temperature that can act on the pattern layer from acting on the pattern layer, thereby preventing the pattern layer from being damaged.
  • the manufacturing is performed according to the procedure of forming the pattern layer after forming the primary reinforcing layer on the glass substrate base material first, and then dividing the individual glass substrates.
  • the primary reinforcing layer does not exist on the end surface of the glass substrate
  • the secondary reinforcing layer is formed on the end surface of the glass substrate by the secondary strengthening device, the strength is reduced. Therefore, a sufficiently high strength can be ensured.
  • the secondary strengthening layer is formed by performing chemical strengthening treatment by ion exchange on the end surface of the glass substrate, for example, the entire glass substrate is made like air cooling strengthening treatment.
  • the secondary reinforcing layer can be formed without heating and without heating the glass substrate until the softening point is reached. Thereby, it is possible to form the secondary reinforcing layer without damaging the pattern layer formed on the glass substrate. In addition, compared with the case where strengthening is achieved by forming a coating layer on the end face of the glass substrate, the secondary reinforcing layer formed by the chemical strengthening treatment is not lost due to friction or the like, and has a high strength over time. Can be maintained.
  • the chemical strengthening process by ion exchange is performed a plurality of times at intervals, so that the following actions and effects can be obtained.
  • the chemical strengthening process is performed at once without any interval, the end face of the glass substrate may be rapidly cooled along with the chemical strengthening process. There is a possibility that the glass substrate is cracked by promoting the growth of slight scratches and cracks existing from the beginning.
  • the chemical strengthening treatment is performed so as not to rapidly cool the end face of the glass substrate, the thickness of the formed secondary reinforcing layer becomes insufficient, and the strength may be insufficient.
  • the end surface of the glass substrate has a sufficient thickness without quenching.
  • the next reinforcing layer can be formed.
  • the tempered glass is provided separately from the position input device made of a glass substrate that does not have each tempered layer as in the past. Compared with the case where the position input device is protected by using the device, the number of parts can be reduced, so that the cost, weight, thickness, etc. can be reduced.
  • the secondary strengthening device is arranged on the upstream side with respect to a conveying device that conveys the glass substrate along a plate surface thereof, and a conveying direction of the glass substrate by the conveying device, and the glass substrate.
  • a heating device that heats the end surface of the glass substrate, and a chemical strengthening treatment device that is disposed relatively downstream with respect to the transport direction and that sprays a chemical strengthening treatment liquid onto the end surface of the glass substrate.
  • the chemical strengthening treatment liquid can be sprayed and has a plurality of nozzles arranged in parallel at intervals along the conveyance direction of the glass substrate.
  • a chemical strengthening processing liquid is ejected from a plurality of nozzles which a chemical strengthening processing device has, and glass substrate Since a chemical strengthening process liquid can be made to adhere several times at intervals with respect to an end surface, it is excellent in manufacturing efficiency.
  • the nozzles are arranged in parallel with each other with a pair along the transport direction, with a pair of the nozzles sandwiching the transport device from a direction intersecting the transport direction.
  • the chemical strengthening treatment liquid can be attached to the pair of end surfaces of the glass substrate sandwiched between the pair of nozzles by ejecting the chemical strengthening treatment liquid from the pair of nozzles forming a pair. Excellent production efficiency.
  • the conveyance device includes a first conveyance device that conveys the glass substrate in one direction along the plate surface, and a direction that is along the plate surface and orthogonal to the conveyance direction by the first conveyance device.
  • the second heating device and the chemical strengthening treatment device respectively, the first heating device and the first chemical strengthening treatment device corresponding to the first transport device, It is comprised from the 2nd heating apparatus and 2nd chemical strengthening processing apparatus corresponding to a 2nd conveying apparatus.
  • the second heating device and the second heating device are transported in a direction orthogonal to the transporting direction by the first transporting device, and the second heating device and the second second end surface are different from the end surface subjected to the chemical strengthening treatment by the first heating device and the first chemical strengthening processing device.
  • a chemical strengthening process can be performed by a chemical strengthening apparatus. As described above, since the chemical strengthening treatment can be continuously performed on each end face of the glass substrate, the production efficiency is further improved.
  • the transport device includes: a first transport device that transports the glass substrate in one direction along the plate surface; a second transport device that transports the glass substrate in the same direction as the first transport device; The heating device and the chemical strengthening are arranged between a first transfer device and a second transfer device and an attitude conversion device that rotates the glass substrate along its plate surface.
  • the processing apparatus includes a first heating device and a first chemical strengthening processing device corresponding to the first transport device, and a second heating device and a second chemical strengthening processing device corresponding to the second transport device, respectively. .
  • the end surface is subjected to the chemical strengthening treatment by the first heating device and the first chemical strengthening processing device, and then the glass substrate is moved to the plate by the posture changing device.
  • the posture of the glass substrate is changed by rotating along the surface.
  • position was changed is conveyed in the same direction as a 1st conveying apparatus by a 2nd conveying apparatus, it differs from the end surface to which the chemical strengthening process by the 1st heating apparatus and the 1st chemical strengthening processing apparatus was performed
  • the chemical strengthening treatment can be performed on the end face by the second heating device and the second chemical strengthening treatment device. As described above, since the chemical strengthening treatment can be continuously performed on each end face of the glass substrate, the production efficiency is further improved.
  • the manufacturing method of the position input device which can achieve cost reduction, weight reduction, thickness reduction, etc., and the manufacturing apparatus of a position input device can be provided.
  • Sectional drawing which shows schematic structure of the liquid crystal display device which concerns on Embodiment 1 of this invention.
  • Plan view of liquid crystal display device The top view which shows roughly the planar structure of the pattern layer in the touchscreen with which a liquid crystal display device is equipped Sectional view taken along line iv-iv in FIG. V-v sectional view of FIG.
  • Side view showing schematic configuration of touch panel manufacturing equipment
  • Plan view of glass substrate base material before primary strengthening process The top view which shows the state which formed the primary reinforcement layer in the surface of the glass substrate base material through the primary reinforcement
  • the top view which shows the state which formed the pattern layer and the insulating layer in the glass substrate base material through the pattern formation process
  • the top view which shows the state which rounded the corner
  • Sectional drawing which expanded the edge part in the glass substrate which passed through the division process or edge part processing process
  • the top view showing schematic structure of the secondary strengthening apparatus with which the manufacturing apparatus of a touch panel is equipped
  • the expanded sectional view which shows the state which irradiated the laser beam to the end surface of the glass substrate in the heating process included in the secondary strengthening process
  • the expanded sectional view which shows the state which injected the chemical strengthening process liquid from the 1st nozzle to the end surface of the glass substrate in the chemical strengthening process included in a secondary strengthening process.
  • the expanded sectional view which shows the state which injected the chemical strengthening process liquid from the 3rd nozzle to the end surface of a glass substrate in the chemical strengthening process included in a secondary strengthening process.
  • the expanded sectional view which shows the state which injected the chemical strengthening process liquid from the 5th nozzle to the end surface of a glass substrate in the chemical strengthening process included in a secondary strengthening process.
  • the top view which shows the state which formed the secondary reinforcement layer in the end surface of a glass substrate through the secondary reinforcement process A glass substrate cut along line xx-xx in FIG.
  • the top view showing schematic structure of the secondary strengthening apparatus with which the manufacturing apparatus of the touchscreen which concerns on Embodiment 2 of this invention is equipped.
  • FIGS. 1 A first embodiment of the present invention will be described with reference to FIGS.
  • the manufacturing method and the manufacturing apparatus 50 of the touch panel 12 provided in the liquid crystal display device 10 are illustrated.
  • a part of each drawing shows an X axis, a Y axis, and a Z axis, and each axis direction is drawn to be a direction shown in each drawing.
  • FIG. 1 is used as a reference, and the upper side of the figure is the front side and the lower side of the figure is the back side.
  • the liquid crystal display device 10 has a vertically long rectangular shape as a whole.
  • a touch panel (position input device) 12 for inputting position information in the above and a backlight device 13 (illumination device) as an external light source for supplying light to the liquid crystal panel 11 are provided.
  • the touch panel 12 is arranged on the front side (display surface DS side, light emission side) of the liquid crystal panel 11 and integrated with the adhesive layer BL.
  • the liquid crystal display device 10 further includes a bezel 14 that holds (clamps) the touch panel 12 that is integrated with the liquid crystal panel 11, and a housing 15 that is attached to the bezel 14 and accommodates the liquid crystal panel 11 and the backlight device 12. ing.
  • the liquid crystal display device 10 according to the present embodiment is used in various electronic devices (not shown) such as portable information terminals (including electronic books), mobile phones (including smartphones), notebook computers, and portable game machines. It is used. For this reason, the screen sizes of the liquid crystal panel 11 and the touch panel 12 constituting the liquid crystal display device 10 are about several inches to several tens of inches, and are generally classified as small or medium-sized.
  • the liquid crystal panel 11 will be described.
  • the liquid crystal panel 11 is interposed between a pair of transparent (translucent) glass substrates 11a and 11b having a vertically long rectangular shape, and both the substrates 11a and 11b, and its optical characteristics change as an electric field is applied.
  • a liquid crystal layer (not shown) containing liquid crystal molecules as a material to be bonded, and both substrates 11a and 11b are bonded together with a sealing agent (not shown) while maintaining a gap corresponding to the thickness of the liquid crystal layer.
  • the long side direction of the liquid crystal panel 11 coincides with the X-axis direction
  • the short side direction coincides with the Y-axis direction.
  • the front side is the CF substrate 11a
  • the back side is the array substrate 11b
  • a number of TFTs Thin Film Transistors
  • pixel electrodes which are switching elements, are provided side by side.
  • a gate wiring and a source wiring having a lattice shape are disposed around the gate.
  • a predetermined image signal is supplied to each wiring from a control circuit (not shown).
  • the pixel electrode is made of a transparent electrode such as ITO (Indium Tin Oxide) or ZnO (Zinc Oxide).
  • the CF substrate 11a On the other hand, on the CF substrate 11a, a large number of color filters are arranged side by side at positions corresponding to the respective pixels.
  • the color filter is arranged so that three colors of R, G, and B are alternately arranged.
  • a light shielding layer (black matrix) for preventing color mixture is formed between the color filters.
  • On the surface of the color filter and the light shielding layer a counter electrode facing the pixel electrode on the array substrate 11b side is provided.
  • the CF substrate 11a is slightly smaller than the array substrate 11b.
  • An alignment film for aligning liquid crystal molecules contained in the liquid crystal layer is formed on the inner surfaces of both the substrates 11a and 11b.
  • a polarizing plate is attached to each of the outer surfaces of the substrates 11a and 11b.
  • the backlight device 13 will be briefly described prior to the touch panel 12.
  • the backlight device 13 is a so-called edge light type (side light type), and has a light source, a substantially box-shaped chassis that opens on the front side (the liquid crystal panel 11 side, the light emission side) and accommodates the light source, and a light source.
  • a light guide member that is arranged opposite to the end portion, guides light from the light source, and emits the light toward the opening portion of the chassis, and an optical member arranged to cover the opening portion of the chassis.
  • the light emitted from the light source is incident on the end of the light guide member, then propagates through the light guide member and is emitted toward the opening of the chassis, and then the in-plane luminance distribution is uniform by the optical member.
  • the liquid crystal panel 11 is irradiated after being converted into planar light. Then, by driving the TFT included in the liquid crystal panel 11, the light transmittance with respect to the liquid crystal panel 11 is selectively controlled within the surface of the display surface DS, whereby a predetermined image can be displayed on the display surface DS.
  • the light source, chassis, light guide member, and optical member are omitted.
  • the touch panel 12 is of a so-called projected capacitance type, and roughly includes pattern layers 17 and 18 for detecting an input position formed on a glass substrate 16, and the whole. As shown in FIG. 4, the liquid crystal panel 11 has sufficient transparency so as not to hinder the visual observation of the image.
  • the glass substrate 16 uses soda lime glass as its material, and the soda lime glass is obtained by mixing and melting silica sand (SiO 2), sodium carbonate (Na 2 CO 3), and calcium carbonate (CaCO 3).
  • the softening point is, for example, in the range of 720 degrees to 740 degrees and about 730 degrees.
  • the glass substrate 16 has high transparency and has a vertically long rectangular shape as viewed in a plane like the liquid crystal panel 11, and the size viewed in the plane is one smaller than the substrates 11 a and 11 b forming the liquid crystal panel 11. It is supposed to be big. As described above, the screen size of the touch panel 12 is generally classified into a small size and a medium size. Therefore, in manufacturing, the high production efficiency and the cost for the production equipment are taken into consideration.
  • the large glass substrate base material (mother glass) 16M is used, and specifically, nine glass substrates 16 in total are taken out from one glass substrate base material 16M (FIGS. 10 and 10). 11). This also applies to the substrates 11a and 11b constituting the liquid crystal panel 11. Moreover, as shown in FIG.
  • the glass substrate 16 which comprises the touch panel 12 is rounded by the corner
  • the bezel 14 that holds the touch panel 12 has rounded corners at the four corners.
  • the pattern layers 17 and 18 are arranged in a stacked manner on the plate surface 16 a of the glass substrate 16, and are arranged in a plurality of rows of the first pattern layers 17 extending along the X-axis direction. , And a plurality of rows of second pattern layers 18 extending along the Y-axis direction (direction orthogonal to (intersects with) the X-axis direction).
  • the first pattern layer 17 and the second pattern layer 18 have electrode pad portions 17a and 18a each having a rhombus shape in a plan view in a region surrounded by a crossing portion, and these first electrode pad portions.
  • a plurality of 17a and second electrode pad portions 18a are arranged in parallel in a matrix form so as to be adjacent to each other in a plan view (a shape alternately arranged in a plan view).
  • a plurality of first electrode pad portions 17a arranged in parallel along the X-axis direction are connected to each other, so that one row of the first pattern layer 17 is configured, and similarly in the Y-axis direction.
  • a plurality of second electrode pad portions 18a arranged in parallel along each other are connected to each other, so that one row of the second pattern layer 17 is configured.
  • the first pattern layer 17 is a plate surface facing the front side of the glass substrate 16 (a plate surface on the side operated by the user, a plate on the side opposite to the liquid crystal panel 11 side).
  • the first insulating layer 19 is laminated on the outer side of the outer surface 16a.
  • the second pattern layer 18 is arranged so as to be laminated on the outside of the first insulating layer 19 described above, so that the second pattern layer 18 is kept in an insulated state with respect to the first pattern layer 17. It is avoided that the second pattern layer 18 is exposed to the outside by the layer 20 being laminated. That is, the pattern layers 17 and 18 are both arranged only on the front surface 16a (one surface) which is operated by the user among the front and back both surfaces 16a of the glass substrate 16.
  • 4 shows a portion connecting the second electrode pad portions 18a adjacent to each other in the second pattern layer 18, and
  • FIG. 5 similarly shows the first electrodes adjacent to each other in the first pattern layer 17.
  • the part which connects the pad part 17a is shown in figure.
  • These pattern layers 17 and 18 are made of ITO (Indium Tin Oxide), which is a transparent conductive material, and have high transparency that is almost invisible to the user, and are not shown. Connected to the detection circuit.
  • ITO Indium Tin Oxide
  • a finger of a user who is a conductor touches or approaches the operation surface of the touch panel 12 in a state where voltages are sequentially applied to the first pattern layers 17 and the second pattern layers 18 of the plurality of rows, Since capacitance is generated between the pattern layers 17 and 18 and the user's finger, the capacitance values of the pattern layers 17 and 18 are different from the capacitance values of the other pattern layers 17 and 18. It becomes.
  • this touch panel 12 can perform multipoint detection (multitouch) when the user simultaneously inputs a position at a plurality of locations in the operation surface.
  • These pattern layers 17 and 18 are formed in the large-sized glass substrate base material 16M from which a plurality of glass substrates 16 are taken in consideration of high production efficiency and costs related to production equipment in the manufacturing process of the touch panel 12. It is formed in a lump in the formation region.
  • primary reinforcing layers 21 are respectively formed on at least the front and back plate surfaces (surfaces along the display surface DS) 16 a of the glass substrate 16.
  • the strength of the glass substrate 16 is increased.
  • the primary strengthening layer 21 is formed by subjecting the glass substrate 16 (directly the glass substrate base material 16M) to chemical strengthening treatment, and is a compression layer (compression stress layer) in which compressive stress remains.
  • the chemical strengthening treatment here refers to a treatment for strengthening the glass substrate 16 by replacing alkali metal ions constituting the glass substrate 16 with alkali metal ions having an ion radius larger than that by ion exchange.
  • the compressed layer according to the present embodiment is an ion exchange layer formed by replacing sodium ions existing on the surface of the glass substrate 16 with potassium ions having an ion radius larger than that.
  • the primary reinforcing layer (compressed layer, ion-exchange layer) 21 has a depth dimension (thickness dimension) of about several tens of ⁇ m, which is relatively smaller than the case where the primary reinforcing layer is formed by air cooling strengthening. However, in terms of strength, at least twice as much as in the case of the air cooling strengthening process can be obtained.
  • the pattern layers 17 and 18 and the insulating layers 19 and 20 are formed so as to be laminated on the outer side of the primary reinforcing layer 21.
  • the primary reinforcing layer 21 described above is immersed in a molten salt (chemical strengthening treatment solution) containing potassium nitrate in a so-called immersion type (overall immersion). It is formed by performing chemical strengthening treatment of the formula. Accordingly, the primary reinforcing layer 21 is uniformly formed over the entire outer peripheral surface including both the front and back plate surfaces 16a and the end surface (outer peripheral end surface) 16b on the surface of the glass substrate base material 16M. However, in the manufacturing process, the glass substrate base material 16M that has been primarily strengthened is divided so that the individual glass substrates 16 are taken out.
  • the primary reinforcing layer 21 may not remain on the end surface 16b (FIG. 13). If the end surface of the glass substrate is exposed as a non-strengthened surface, the strength is locally lowered on the non-strengthened surface, which may cause damage to the glass substrate. Therefore, in the present embodiment, the secondary reinforcing layers 22 are formed on the end surfaces 16b of the individual glass substrates 16, respectively. Hereinafter, the secondary reinforcing layer 22 will be described in detail.
  • the secondary reinforcing layer 22 is formed by subjecting the end surface 16 b of the glass substrate 16 to a chemical strengthening process by ion exchange. Specifically, the secondary reinforcing layer 22 is selectively applied only to the end surface 16b by performing chemical strengthening treatment by ion exchange selectively on the end surface 16b of each glass substrate 16 taken out from the glass substrate base material 16M. Is formed.
  • the secondary strengthening layer 22 is formed by performing a chemical strengthening treatment that replaces sodium ions existing on the surface of the end surface 16b of the glass substrate 16 with potassium ions that are atoms having a larger ion radius than that of the compressed layer (ion Exchange layer), and is similar in structure to the primary reinforcing layer 21 described above.
  • the secondary reinforcing layer 22 is different from the primary reinforcing layer 21 with respect to a forming method including the point that the glass substrate 16 is formed by performing chemical strengthening treatment individually. Specifically, the secondary strengthening layer 22 locally heats the end face 16b of the glass substrate 16, and then locally adheres a molten salt (chemical strengthening treatment liquid) containing at least potassium nitrate thereto. It is formed by that. That is, the secondary reinforcing layer 22 is formed only in a selective range (end face 16b) by performing a so-called local spraying type chemical strengthening process on each glass substrate 16. The secondary reinforcing layer 22 is formed without interruption over the entire circumference and width of the end surface 16 b of the glass substrate 16.
  • a molten salt chemical strengthening treatment liquid
  • the primary reinforcing layer 21 and the secondary reinforcing layer 22 are formed on the plate surface 16a and the end surface 16b of the glass substrate 16, respectively, and both the primary reinforcing layer 21 and the secondary reinforcing layer 22 are compressed by chemical strengthening treatment. Since it consists of layers, the strength of the touch panel 12 having the position information input function can be made extremely high. As a result, there is no need to use a cover glass as in the conventional case, so that cost reduction, weight reduction, thickness reduction, and the like can be achieved.
  • the liquid crystal display device 10 applies an adhesive to one or both of the separately manufactured liquid crystal panel 11 and the touch panel 12, and positions each other in the direction along the plate surface (X-axis direction and Y-axis direction). By bonding together, the liquid crystal panel 11 and the touch panel 12 are integrated in a positioned state via the adhesive layer BL. Subsequently, the operation of holding (holding) the outer peripheral end portion of the touch panel 12 by the bezel 14 is performed, while the backlight device 13 is accommodated in the housing 15. Then, by attaching the bezel 14 to the housing 15, the liquid crystal panel 11 integrated with the touch panel 12 is accommodated in the housing 15 as shown in FIG. The light emitting surfaces at 13 are arranged in opposition to obtain the liquid crystal display device 10. Below, among the components of the liquid crystal display device 10, the manufacturing method of the touch panel 11 is demonstrated in detail, and the manufacturing apparatus 50 of the touch panel 11 is also described in detail.
  • the touch panel 12 is roughly patterned in such a manner that a primary strengthening step of forming a primary strengthening layer 21 on the surface of a large glass substrate base material 16M and a layer laminated on the outside of the primary strengthening layer 21 of the glass substrate base material 16M.
  • the manufacturing apparatus 50 for manufacturing the touch panel 12 through the steps as described above includes a primary strengthening apparatus 51 that forms a primary reinforcing layer 21 on the surface of a glass substrate base material 16M, and a glass substrate base.
  • the surface of the glass substrate base material 16M shown in FIG. 7 is subjected to immersion type chemical strengthening treatment by ion exchange using the primary strengthening device 51 shown in FIG.
  • the primary strengthening device 51 includes a chemical strengthening treatment tank (not shown) filled with a chemical strengthening treatment liquid made of a molten salt containing potassium nitrate.
  • the glass substrate base material 16M is introduced into the glass substrate and immersed in the chemical strengthening treatment solution as a whole, and maintained in a temperature environment of 380 to 450 degrees for several hours to several tens of hours.
  • the glass substrate base material 16M is primarily strengthened using the chemical strengthening method. Therefore, the strength is twice or more as compared with the case where the air cooling strengthening method is used. be able to.
  • the nine glass substrates 16 to be taken out of the plate surface of the glass substrate base material 16M are used by using the pattern forming apparatus 52 shown in FIG.
  • Pattern layers 17 and 18 and insulating layers 19 and 20 are sequentially stacked and formed on the corresponding nine pattern formation regions by a known photolithography method.
  • the pattern forming device 52 includes an exposure device that exposes the glass substrate base material 16M using a mask and a developing device that develops the exposed glass substrate base material 16M.
  • the pattern forming device 52 52 In the pattern forming step, the pattern forming device 52 52, the first pattern layer 17, the first insulating layer 19, the second pattern layer 18, and the second insulating layer 20 in this order with respect to the plate surface on one side of the two plate surfaces of the glass substrate base material 16M. Pattern each one. Thereby, as shown in FIG. 10, the pattern layers 17 and 18 and the insulating layers 19 and 20 of the nine glass substrates 16 to be taken out are all formed on the glass substrate base material 16M in a lump. Become. Accordingly, if the pattern layers 17 and 18 and the insulating layers 19 and 20 are formed on the individual glass substrates 16 using a single wafer processing apparatus, the production efficiency is extremely high. In addition, the cost of the production equipment is excellent, and production at a low cost is possible.
  • the pattern layers 17 and 18 are subjected to the primary strengthening process after the pattern forming process, for example. Is not exposed to a high temperature environment and is not exposed to a molten salt containing potassium nitrate, so that the pattern layers 17 and 18 can be prevented from being damaged.
  • the glass substrate base material 16M is divided into a lattice shape and the nine glass substrates 16 are taken out using the dividing device 53 shown in FIG. 6, as shown in FIG.
  • the dividing device 53 includes a laser device that oscillates and emits laser light such as a carbon dioxide laser and a cooling device that jets water or compressed air.
  • the dividing device 53 is used.
  • the glass substrate base material 16M is irradiated with laser light and heated, and then forcedly cooled by jetting water or compressed air, and the glass substrate base material 16M is subjected to thermal strain generated in the glass as a trigger.
  • Substrate base material 16M can be divided along the planned division line.
  • the glass substrate 16 divided through the dividing step has the primary reinforcing layer 21 remaining on almost the entire area on both the front and back plate surfaces 16a.
  • the primary reinforcing layer 21 does not remain. For this reason, if the end surface of the glass substrate is left as a non-strengthened surface, the strength is locally lowered on the non-strengthened surface, and thus the glass substrate may be easily damaged.
  • the corners at the four corners are processed using the edge processing device 54 shown in FIG. 6, as shown in FIG. 12, among the edges of each of the divided glass substrates 16. Round the planar shape.
  • the end processing device 54 has, for example, a grinder, and in the end processing step, each corner of the glass substrate 16 is ground by the grinder. Even after this end processing step, the end surface 16b of the glass substrate 16 where the primary reinforcing layer 21 is not formed is still left as a non-reinforced surface (FIG. 13).
  • the secondary strengthening device 55 includes a transport device 56 that transports the glass substrate 16 in the direction of the arrow in FIG.
  • the heating device 57 that heats the end surface 16b of the glass substrate and the chemical strengthening processing device 58 that adheres a molten salt (chemical strengthening processing solution) containing potassium nitrate to the end surface 16b of the glass substrate 16 being conveyed.
  • the secondary strengthening step performed using the secondary strengthening device 55 includes a heating step (FIG. 15) for heating the end surface 16b of the glass substrate 16, and a molten salt containing potassium nitrate on the end surface 16b of the heated glass substrate 16.
  • a chemical strengthening treatment step (FIGS. 16 to 18) for attaching (chemical strengthening treatment liquid) is sequentially performed.
  • a specific configuration of each of the devices 56 to 58 constituting the secondary strengthening device 55 and a specific content of each process constituting the secondary strengthening step will be described.
  • the transfer device 56 linearly moves the glass substrate 16 in one direction along the plate surface 16a (the X-axis direction, the direction along the short side of the glass substrate 16 in FIG. 14).
  • a belt conveyor that can be transported is provided, and the transport speed is substantially constant.
  • the heating device 57 is arranged on the upstream side (left side shown in FIG. 14) in the transport direction of the glass substrate 16 by the transport device 56 relative to the chemical strengthening processing device 58 described below.
  • the carbon dioxide laser or YAG A laser oscillation device (not shown) that oscillates a laser beam such as a laser and a laser head 57a that irradiates the laser beam are provided.
  • the laser heads 57a are arranged in a pair and opposed to each other so as to sandwich the conveying device 56 (the glass substrate 16 to be conveyed) from a direction (Y-axis direction) orthogonal to the conveying direction. And in a heating process, with respect to the glass substrate 16 conveyed by the conveying apparatus 56, it is with respect to the both end surfaces 16b along the conveyance direction (X-axis direction) (both end surfaces 16b which faced the outer side about the direction orthogonal to a conveyance direction).
  • X-axis direction both end surfaces 16b which faced the outer side about the direction orthogonal to a conveyance direction
  • the end surface 16b of the glass substrate 16 is irradiated with laser light and selectively heated, whereas the plate surface 16a of the glass substrate 16 and the pattern layers 17 and 18 formed thereon are applied. Are not irradiated with laser light, and the situation where they are directly heated is avoided. Moreover, since the heating temperature of the end surface 16b of the glass substrate 16 by the laser beam is sufficiently lower than the softening point of the glass substrate 16, from the end surface 16b directly heated by the laser beam, the plate surface 16a and each Even if heat transfer occurs to the pattern layers 17 and 18, the pattern layers 17 and 18 are rarely brought into a high temperature state so as to be damaged.
  • the specific heating temperature of the end face 16b of the glass substrate 16 by the laser light is preferably in the range of, for example, 380 to 450 degrees, thereby almost causing damage that deteriorates the pattern layers 17 and 18. It is possible to efficiently promote ion exchange in the subsequent chemical strengthening treatment step.
  • this heating process since the glass substrate 16 is transported by the transport device 56, it is relatively moved at a constant speed with respect to the laser head 57a that irradiates the laser light. Can be scanned along the extending direction (X-axis direction or Y-axis direction). And the end surface 16b of the glass substrate 16 is heated over the whole region by irradiating the end surface 16b of the glass substrate 16 over the entire circumference and width.
  • the chemical strengthening treatment device 58 is disposed on the downstream side (right side shown in FIG. 14) in the conveyance direction of the glass substrate 16 by the conveyance device 56 relative to the heating device 57.
  • a plurality of nozzles 58a to 58e capable of injecting the strengthening treatment liquid (molten salt containing potassium nitrate) are provided.
  • five nozzles 58a to 58e are arranged in parallel at a spatial interval along the transport direction (X-axis direction) of the glass substrate 16 by the transport device 56, and sequentially from the upstream side.
  • Spatial intervals between the adjacent nozzles 58a to 58e in the transport direction that is, the arrangement pitch PT of the nozzles 58a to 58e are substantially equal (equal intervals).
  • the nozzles 58a to 58e are opposed to each other in pairs on both sides so as to sandwich the transport device 56 (the glass substrate 16 to be transported) from the direction orthogonal to the transport direction (Y-axis direction). It is arranged in a shape. From each of the nozzles 58a to 58e, the chemical strengthening treatment liquid can be sprayed in the form of a mist so that the chemical strengthening treatment liquid is uniformly applied to the end face 16b of the glass substrate 16 with a uniform concentration as much as possible. Can be attached.
  • both end surfaces 16b along the transport direction are directed outward in the direction orthogonal to the transport direction.
  • the chemical strengthening treatment liquid is intermittently sprayed five times at predetermined time intervals from the paired nozzles 58a to 58e to the both end faces 16b).
  • FIGS. As shown in FIG. 14, when the glass substrate 16 heated to the surface temperature suitable for the chemical strengthening process by the laser head 57a in the heating process is transported by the transport device 56 to the processing position by the first nozzle 58a, FIGS. As shown in FIG.
  • the chemical strengthening treatment liquid is sprayed in a mist form from a pair of opposed first nozzles 58 a to both end surfaces 16 b and a predetermined amount adheres. Then, until the glass substrate 16 is transported to the processing position by the second nozzle 58b by the transport device 56, the chemical strengthening process is not performed, so that a non-processing period is provided.
  • both end surfaces 16b are chemically strengthened by the pair of second nozzles 58b, and then after the non-processing period again, the chemical strengthening processing by the third nozzle 58c ( 17) is performed, and then the chemical strengthening process by the fourth nozzle 58d is performed again after a non-processing period, and the chemical strengthening process (FIG. 18) by the fifth nozzle 58e is performed again after a non-processing period.
  • the spraying range of a chemical strengthening process liquid is illustrated with the dashed-dotted line.
  • the glass substrate 16 is supplied with the chemical strengthening treatment liquid in small amounts to the end face 16b through the processing period in which the chemical strengthening process is performed and the non-processing period in which the chemical strengthening process is not performed alternately.
  • the secondary reinforcing layer 22 is grown and formed so as to gradually increase the thickness (depth).
  • the chemical strengthening treatment is performed at once without providing a non-treatment period, a relatively large amount of the chemical strengthening treatment liquid is sprayed on the end face in a short time.
  • the end face may be rapidly cooled, and in this case, the glass substrate is thermally strained by the same principle as explained in the dividing step and promotes the growth of slight scratches and cracks originally existing on the end face.
  • the chemical strengthening process is repeated intermittently in five steps with a time interval as described above, that is, the so-called interval-type chemical strengthening process is performed. Since the secondary reinforcing layer 22 is gradually grown and formed by adhering the tempering treatment liquid to the end surface 16b of the glass substrate 16 over time, the end surface 16b of the glass substrate 16 is not rapidly cooled and sufficient. A secondary reinforcing layer 22 having a thickness (depth) can be formed.
  • the four non-processing periods (temporal intervals) inserted between the five processing periods conform to the arrangement pitch (spatial interval) PT of the adjacent nozzles 58a to 58e. Are substantially equal to each other.
  • the glass substrate 16 is transported by the transport device 56, so that the glass substrate 16 is relatively moved at a constant speed with respect to the nozzles 58a to 58e spraying the chemical strengthening process liquid.
  • the treatment liquid can be continuously attached to the end surface 16b of the glass substrate 16 along the extending direction (X-axis direction or Y-axis direction). Then, by attaching the chemical strengthening treatment liquid to the end surface 16b of the glass substrate 16 over the entire circumference and width, as shown in FIGS. 19 and 20, the secondary reinforcing layer 22 is spread over the entire end surface 16b of the glass substrate 16. Is formed.
  • sodium ions present on the surface of the end surface 16b of the glass substrate 16 and potassium ions present in the chemical strengthening treatment liquid are efficiently exchanged, so that potassium ions are present on the end surface 16b of the glass substrate 16.
  • the ion exchange layer is formed by entering the surface. Since this potassium ion is an atom having an ionic radius larger than that of sodium ion, the ion exchange layer formed on the surface of the end face 16b of the glass substrate 16 is a compressed layer in which compressive stress remains.
  • the secondary reinforcing layer 22 formed in this way is formed on the end surface 16b of the glass substrate 16 by chemical strengthening treatment, for example, when a reinforcing coating layer is formed on the end surface of the glass substrate. In comparison, for example, the occurrence of defects due to friction or the like associated with carrying and using the liquid crystal display device 10 is avoided, so that high strength can be maintained over time.
  • the secondary reinforcing layer 22 is formed on the end surface 16b of the glass substrate 16 by a local spraying type chemical strengthening process, an air cooling strengthening process or an immersion type chemical strengthening is performed on the glass substrate on which the pattern layer is temporarily formed.
  • the entire glass substrate 16 does not reach a high temperature state, so that the pattern layers 17 and 18 formed on the plate face 16a are thermally or chemically treated. To avoid damaging damage.
  • the secondary reinforcing layer 22 is formed by a local spraying type chemical strengthening process, the end face is locally melted by irradiating the end face of the glass substrate with a laser beam and heating it to the softening point.
  • the processing temperature is relatively low, so that the pattern layers 17 and 18 are hardly damaged by heat.
  • the primary reinforcing layer 21 is formed on the plate surface 16a of the glass substrate 16 and the secondary reinforcing layer 22 is formed on the end surface 16b, and both the primary reinforcing layer 21 and the secondary reinforcing layer 22 are chemically strengthened. Since the compressed layer (ion exchange layer) formed by the treatment is used, the outer peripheral surface of the glass substrate 16 is uniformly reinforced throughout the entire area, and thus the touch panel 12 having extremely high strength can be obtained. Therefore, compared with the case where the touch panel 12 is protected using a conventional cover glass, cost reduction, weight reduction, thickness reduction, and the like can be achieved.
  • the dividing step is temporarily performed. Compared with the case where the pattern layers are individually formed on the individual glass substrates 16 after performing the above, efficient processing can be performed and the manufacturing cost can be reduced. Furthermore, since the primary reinforcement layer 21 is first formed on the glass substrate base material 16M in the primary strengthening step, the pattern layers 17 and 18 are formed on the glass substrate base material 16M in the pattern formation step. Further, it is possible to avoid the high temperature that can act on the formation of the primary reinforcing layer 21 from acting on the pattern layers 17 and 18, thereby preventing the pattern layers 17 and 18 from being damaged.
  • the primary reinforcing layer 21 is first formed on the glass substrate base material 16M, the pattern layers 17 and 18 are formed, and then the individual glass substrates 16 are divided.
  • the secondary reinforcing layer is formed on the end surface 16b of the glass substrate 16 in the secondary strengthening step. 22 is formed, it is possible to suppress a decrease in strength, and to ensure a sufficiently high strength.
  • the end face 16b of the glass substrate 16 is subjected to a chemical strengthening process by ion exchange to form the secondary strengthening layer 22; It is not necessary to heat the entire substrate 16, and the secondary reinforcing layer 22 can be formed without heating the glass substrate 16 until the softening point is reached. Thereby, the secondary reinforcing layer 22 can be formed without damaging the pattern layers 17 and 18 formed on the glass substrate 16. Moreover, compared with the case where reinforcement
  • the chemical strengthening process by ion exchange is performed a plurality of times at intervals, so that the following actions and effects can be obtained. That is, if the chemical strengthening process is performed at once without an interval, the end face 16b of the glass substrate 16 may be rapidly cooled along with the chemical strengthening process, which causes thermal distortion in the glass substrate 16, and as a result. There is a possibility that the glass substrate 16 is cracked by promoting the growth of slight scratches and cracks originally present on the end face 16b. However, if the chemical strengthening process is suppressed so as not to rapidly cool the end face 16b of the glass substrate 16, the thickness of the formed secondary reinforcing layer 22 becomes insufficient, and the strength may be insufficient.
  • the end surface 16b of the glass substrate 16 has a sufficient thickness (depth) without quenching. It is possible to form the secondary reinforcing layer 22 with Thereby, it can avoid that a crack etc. arise in the glass substrate 16 in a secondary strengthening process, and the intensity
  • the strength of the glass substrate 16 on which the pattern layers 17 and 18 are formed as described above can be made sufficiently high, what is the touch panel 12 made of the glass substrate 16 that does not have each reinforcing layer as in the prior art?
  • the number of parts can be reduced as compared with the case where the tempered glass is separately used to protect the touch panel 12, and thus the cost, weight, and thickness can be reduced.
  • the secondary strengthening process includes a heating process for heating the end face 16b of the glass substrate 16 and a chemical strengthening process process for attaching the chemical strengthening treatment liquid to the end face 16b of the heated glass substrate 16 at a plurality of intervals at intervals. And are included. If it does in this way, after heating the end surface 16b of the glass substrate 16 in a heating process, a chemical strengthening process liquid is made to adhere to the end surface 16b of the glass substrate 16 in multiple steps at intervals in a chemical strengthening process.
  • the chemical strengthening can be achieved by efficiently generating ion exchange on the end surface 16b of the glass substrate 16.
  • the end surface 16b of the glass substrate 16 is irradiated with laser light. If it does in this way, end face 16b among glass substrates 16 can be heated locally and efficiently.
  • the heating temperature of the end surface 16 b of the glass substrate 16 is set lower than the softening point of the glass substrate 16. In this way, if the heating temperature is the same as or higher than the softening point of the glass substrate 16, heat is transferred to the pattern layers 17 and 18 formed on the plate surface 16 a of the glass substrate 16. Although the layers 17 and 18 may be damaged, according to the present embodiment, such a problem can be made difficult to occur.
  • the end face 16b of the glass substrate 16 is heated over the entire circumference, and in the chemical strengthening process, the end face 16b of the glass substrate 16 is chemically strengthened over the entire circumference. In this way, since the secondary reinforcing layer 22 can be formed over the entire circumference of the end surface 16b of the glass substrate 16, the strength of the glass substrate 16 can be further improved.
  • a chemical strengthening treatment liquid is sprayed on the end face 16b of the glass substrate 16. If it does in this way, a chemical strengthening process liquid can be locally and efficiently made to adhere to end face 16b among glass substrates 16.
  • the glass substrate 16 is transported in the direction along the plate surface 16a, and the end surface 16b is chemically treated from a plurality of nozzles 58a to 58e arranged in parallel at intervals along the transport direction.
  • the strengthening treatment liquid is sprayed. In this way, since the chemical strengthening treatment liquid can be adhered to the end surface 16b at intervals with respect to the end surface 16b while the glass substrate 16 is being conveyed, the manufacturing efficiency is excellent.
  • the end surface 16b of the glass substrate 16 is heated by the heating device 57 disposed on the upstream side in the transport direction of the glass substrate 16 with respect to the plurality of nozzles 58a to 58e in the chemical strengthening process. . If it does in this way, since the end face 16b is heated while conveying the glass substrate 16 and a chemical strengthening process liquid can be made to adhere several times at intervals, it is further excellent in manufacturing efficiency.
  • a chemical strengthening treatment liquid is sprayed on the end face 16b from both sides of the glass substrate 16. If it does in this way, a chemical strengthening processing liquid can be efficiently made to adhere to end face 16b of glass substrate 16, and it is excellent in manufacturing efficiency.
  • the chemical strengthening treatment liquid is sprayed onto the end surface 16b of the glass substrate 16 in a mist form.
  • the chemical strengthening treatment liquid can be uniformly applied to the end surface 16b of the glass substrate 16 with a uniform concentration, and thus the secondary strengthening layer 22 having a uniform thickness can be formed. it can.
  • a molten salt containing alkali metal ions is used as the chemical strengthening treatment liquid.
  • the chemical strengthening treatment liquid is attached to the end face 16b of the glass substrate 16
  • the alkali metal ions contained in the molten salt forming the chemical strengthening treatment liquid are exchanged with the alkali metal ions present on the surface of the glass substrate 16.
  • the secondary reinforcing layer 22 made of a compressed layer in which compressive stress remains on the end surface 16 b of the glass substrate 16 is formed.
  • the surface of the glass substrate 16 is subjected to a chemical strengthening process or an air cooling strengthening process to form a compression layer as the primary strengthening layer 21. If it does in this way, the intensity
  • the surface of the glass substrate 16 is subjected to chemical strengthening treatment by ion exchange. In this way, the strength of the glass substrate 16 can be further increased.
  • an end processing step is provided between the dividing step and the secondary strengthening step to process the end portion of the glass substrate 16 to adjust the outer shape. If it does in this way, after processing the edge part of the glass substrate 16 in an edge part process process and adjusting the external shape, the secondary reinforcement layer 22 will be formed in the end surface 16b of the glass substrate 16 in a secondary reinforcement process. Can do.
  • the manufacturing apparatus 50 for the touch panel 12 includes a primary strengthening device 51 that forms the primary strengthening layer 21 on the surface of the glass substrate base material 16M from which a plurality of glass substrates 16 can be taken out, and a glass substrate base.
  • a pattern forming apparatus 52 for forming the pattern layers 17 and 18 for detecting the input position on the outer side of the primary reinforcing layer 21 of the material 16M and a plurality of glasses by dividing the glass substrate base material 16M.
  • the pattern layers 17 and 18 are formed on the glass substrate base material 16M from which a plurality of glass substrates 16 can be taken out. Compared with the case where the pattern layers 17 and 18 are individually formed on the individual glass substrates 16 after being divided by the dividing device 53, efficient processing can be performed and the manufacturing cost can be reduced. . Further, the primary strengthening layer 21 is first formed on the glass substrate base material 16M by the primary strengthening device 51, and then the pattern layers 17 and 18 are formed on the glass substrate base material 16M by the pattern forming device 52. Therefore, it is possible to avoid a high temperature or the like that can act on the formation of the primary reinforcing layer 21 from acting on the pattern layers 17 and 18, thereby preventing the pattern layers 17 and 18 from being damaged. .
  • the secondary reinforcing device 55 performs secondary strengthening on the end surface 16b of the glass substrate 16. Since the layer 22 is formed, strength reduction can be suppressed, and thus sufficiently high strength can be ensured.
  • the secondary strengthening layer 22 is formed by performing chemical strengthening processing by ion exchange on the end surface 16b of the glass substrate 16, for example, as in air cooling strengthening processing. It is not necessary to heat the entire glass substrate 16, and the secondary reinforcing layer 22 can be formed without heating the glass substrate 16 until the softening point is reached. Thereby, the secondary reinforcing layer 22 can be formed without damaging the pattern layers 17 and 18 formed on the glass substrate 16. Moreover, compared with the case where reinforcement
  • the chemical strengthening process by ion exchange is performed a plurality of times at intervals, so that the following actions and effects can be obtained. That is, if the chemical strengthening process is performed at once without an interval, the end face 16b of the glass substrate 16 may be rapidly cooled along with the chemical strengthening process, which causes thermal distortion in the glass substrate 16, and as a result. There is a possibility that the glass substrate 16 is cracked by promoting the growth of slight scratches and cracks originally present on the end face 16b. However, if the chemical strengthening process is suppressed so as not to rapidly cool the end face 16b of the glass substrate 16, the thickness of the formed secondary reinforcing layer 22 becomes insufficient, and the strength may be insufficient.
  • the strength of the glass substrate 16 on which the pattern layers 17 and 18 are formed as described above can be made sufficiently high, what is the touch panel 12 made of the glass substrate 16 that does not have each reinforcing layer as in the prior art?
  • the number of parts can be reduced as compared with the case where the tempered glass is separately used to protect the touch panel 12, and thus the cost, weight, and thickness can be reduced.
  • the secondary strengthening device 55 is disposed on the upstream side with respect to the transport device 56 for transporting the glass substrate 16 along the plate surface 16a, and the transport direction of the glass substrate 16 by the transport device 56, and the glass substrate.
  • a heating device 57 that heats the end surface 16b of 16 and a chemical strengthening processing device 58 that is disposed relatively downstream in the transport direction and sprays a chemical strengthening treatment liquid onto the end surface 16b of the glass substrate 16;
  • the apparatus 58 includes a plurality of nozzles 58a to 58e that are capable of injecting the chemical strengthening treatment liquid and that are arranged in parallel at intervals along the conveyance direction of the glass substrate 16.
  • the chemical strengthening process is performed from the plurality of nozzles 58a to 58e of the chemical strengthening processing device 58.
  • the chemical strengthening treatment liquid can be adhered to the end surface 16b of the glass substrate 16 at a plurality of times with an interval therebetween, so that the manufacturing efficiency is excellent.
  • the nozzles 58a to 58e are arranged in parallel with each other with a pair along the transport direction, with a pair of nozzles 58a to 58e sandwiching the transport device 56 from the direction intersecting the transport direction.
  • the chemical strengthening treatment is performed on the pair of end surfaces 16b of the glass substrate 16 sandwiched between the pair of nozzles 58a to 58e by injecting the chemical strengthening treatment liquid from the pair of nozzles 58a to 58e. Since the liquid can be adhered, the production efficiency is excellent.
  • Embodiment 2 A second embodiment of the present invention will be described with reference to FIG. In this Embodiment 2, what changed the structure of the secondary reinforcement
  • the transport device 156 constituting the secondary strengthening device 155 transports a glass substrate 16 having a square shape when viewed in a plane in a direction along the short side (X-axis direction).
  • the heating device 157 and the chemical strengthening processing device 158 are respectively connected to the first heating device 157A and the first chemical strengthening processing device 158A and the second transporting device 156B arranged along the first transporting device 156A.
  • the transport device 156 transports the glass substrate 16 in a fixed posture (a posture in which the short side is parallel to the X-axis direction and the long side is parallel to the Y-axis direction).
  • a fixed posture a posture in which the short side is parallel to the X-axis direction and the long side is parallel to the Y-axis direction.
  • the laser head 157Aa of the first heating device 157A and the nozzles 158Aa to 158Ae of the first chemical strengthening processing device 158A are arranged in parallel at a spatial interval along the transport direction of the glass substrate 16 by the first transport device 156A.
  • a pair of the first conveying device 156A is disposed on both sides in a direction sandwiching from the direction (Y-axis direction) orthogonal to the conveying direction, and the both ends 16b1 on the short side of the glass substrate 16 to be conveyed are arranged. Opposing to the other.
  • the laser head 157Ba of the second heating device 157B and the nozzles 158Ba to 158Be of the second chemical strengthening processing device 158B are arranged in parallel at a spatial interval along the transport direction of the glass substrate 16 by the second transport device 156B. And a pair of both sides of the second transport device 156B sandwiched from the direction (X-axis direction) orthogonal to the transport direction, and both end surfaces on the long side of the glass substrate 16 being transported It is opposed to 16b2.
  • the glass substrate 16 is transported in the direction along the short side by the first transport device 156A and the pair of laser heads 157Aa forming the first heating device 157A with respect to both end surfaces 16b1 on the short side.
  • both end surfaces 16b1 on the short side are heated, and subsequently, five times with a time interval by each of the pair of nozzles 158Aa to 158Ae forming the first chemical strengthening treatment device 158A.
  • the secondary strengthening layer 22 is formed on both end faces 16b1 on the short side (see FIG. 20).
  • both end surfaces 16b2 on the long side are irradiated with laser light from the pair of laser heads 157Ba that form the second heating device 157B first, so that both end surfaces 16b2 on the long side. Is heated, and then the chemical strengthening treatment is intermittently performed five times at a time interval by each of the pair of nozzles 158Ba to 158Be constituting the second chemical strengthening treatment device 158B.
  • Secondary reinforcing layers 22 are formed on both end faces 16b2. As described above, the secondary reinforcing layer 22 can be continuously and efficiently formed on each of the four end faces 16b1 and 16b2 of the glass substrate 16 having a square shape when viewed in plan.
  • the transport device 156 includes the first transport device 156A that transports the glass substrate 16 in one direction along the plate surface 16a, and the glass substrate 16 along the plate surface 16a.
  • the heating device 157 and the chemical strengthening processing device 158 are respectively corresponding to the first transport device 156A, whereas the second transport device 156B transports in a direction orthogonal to the transport direction by the first transport device 156.
  • the first heating device 157A and the first chemical strengthening processing device 158A, and the second heating device 157B and the second chemical strengthening processing device 158B corresponding to the second transport device 156B are configured.
  • the end surface 16b1 is subjected to the chemical strengthening treatment by the first heating device 157A and the first chemical strengthening processing device 158A, and then the second transport device.
  • the glass substrate 16 is conveyed by 156B in a direction orthogonal to the conveying direction by the first conveying device 156A, and is different from the end face 16b1 subjected to the chemical strengthening treatment by the first heating device 157A and the first chemical strengthening treatment device 158A.
  • the end face 16b2 can be subjected to chemical strengthening treatment by the second heating device 157B and the second chemical strengthening treatment device 158B.
  • Embodiment 3 A third embodiment of the present invention will be described with reference to FIG. In this Embodiment 3, what changed further the structure of the secondary reinforcement
  • the transport device 256 constituting the secondary strengthening device 255 includes a first transport device 256 ⁇ / b> A that transports the glass substrate 16 along the X-axis direction, and the glass substrate 16 as the X-axis.
  • the glass substrate 16 is arranged in such a manner as to be interposed between the first transfer device 256B and the second transfer device 256B, and the second transfer device 256B for transferring in the same direction as the transfer direction by the first transfer device 256A.
  • the turntable 59 is connected to the most downstream portion of the first transfer device 256A and the most upstream portion of the second transfer device 256B, so that the glass substrate transferred by the first transfer device 256A.
  • 16 postures can be transferred to the second transport device 256B after being converted into a posture rotated by about 90 degrees.
  • the transport posture of the glass substrate 16 by the first transport device 256A is a first posture in which the short side is parallel to the X-axis direction and the long side is parallel to the Y-axis direction.
  • the transport posture of the glass substrate 16 by the second transport device 256B is the second posture in which the short side is parallel to the Y-axis direction and the long side is parallel to the X-axis direction by undergoing posture conversion by the turntable 59. Is done.
  • the first posture before rotation is indicated by a solid line
  • the second posture after rotation is indicated by a two-dot chain line. Show.
  • the heating device 257 and the chemical strengthening processing device 258 are respectively along the first heating device 257A and the first chemical strengthening processing device 258A and the second transporting device 256B arranged along the first transporting device 256A.
  • the second heating device 257B and the second chemical strengthening treatment device 258B are arranged.
  • the laser head 257Aa of the first heating device 257A and the nozzles 258Aa to 258Ae of the first chemical strengthening treatment device 258A are spaced apart along the transport direction (X-axis direction) of the glass substrate 16 by the first transport device 256A.
  • the laser head 257Ba of the second heating device 257B and the nozzles 258Ba to 258Be of the second chemical strengthening processing device 258B are spatially along the transport direction (X-axis direction) of the glass substrate 16 by the second transport device 256B.
  • a pair is arranged on both sides in such a manner that the second conveying device 256B is sandwiched from a direction (Y-axis direction) perpendicular to the conveying direction, and is conveyed in a second posture.
  • the glass substrate 16 is opposed to both end surfaces 16b2 on the long side.
  • the glass substrate 16 in the first posture is transported in the direction along the short side (X-axis direction) by the first transport device 256A and the first side with respect to both end surfaces 16b1 on the short side.
  • the first transport device 256A By irradiating laser light from the pair of laser heads 257Aa forming the heating device 257A, the both end surfaces 16b1 on the short side are heated, and then the pair of nozzles 258Aa to 258Ae forming the first chemical strengthening treatment device 258A.
  • the secondary strengthening layer 22 is formed on the short-side end faces 16b1 by intermittently performing the chemical strengthening process five times with a time interval (see FIG. 20).
  • the glass substrate 16 that has reached the most downstream portion of the first transport device 256A is placed in the second posture by being rotated about 90 degrees after being placed on the turntable 59.
  • the glass substrate 16 of the second transport device 256B Passed to the most upstream part.
  • the glass substrate 16 in the second posture is transported in the direction along the long side (X-axis direction) by the second transport device 256B.
  • both end surfaces 16b2 on the long side are irradiated with laser light from the pair of laser heads 257Ba that form the second heating device 257B first, whereby both end surfaces 16b2 on the long side.
  • the secondary reinforcing layer 22 is formed on the surface 16b2. As described above, the secondary reinforcing layer 22 can be continuously and efficiently formed on each of the four end faces 16b1 and 16b2 of the glass substrate 16 having a square shape when viewed in plan.
  • the transport device 256 is the same as the first transport device 256A that transports the glass substrate 16 in one direction along the plate surface 16a, and the first transport device 256A.
  • a turntable (posture changer) disposed between the second transfer device 256B for transferring in the direction, the first transfer device 256A and the second transfer device 256B and rotating the glass substrate 16 along its plate surface 16a.
  • the heating device 257 and the chemical strengthening treatment device 258 are respectively a first heating device 257A and a first chemical strengthening treatment device 258A corresponding to the first transport device 256A, and a second transporting device.
  • the second heating device 257B and the second chemical strengthening processing device 258B corresponding to 256B are configured.
  • the end surface 16b1 is subjected to the chemical strengthening treatment by the first heating device 257A and the first chemical strengthening treatment device 258A while the glass substrate 16 is being transported by the first transport device 256A, and then the turntable 59 is used.
  • the glass substrate 16 is rotated along the plate surface 16a to change the posture of the glass substrate 16.
  • the glass substrate 16 whose posture has been changed is transported in the same direction as the first transport device 256A by the second transport device 256B, and chemical strengthening processing is performed by the first heating device 257A and the first chemical strengthening processing device 258A.
  • the end face 16b2 different from the end face 16b1 can be subjected to chemical strengthening treatment by the second heating device 257B and the second chemical strengthening treatment device 258B.
  • the arrangement pitches PT1 to PT4 of the nozzles 358a to 358e of the chemical strengthening processing apparatus 358 according to the present embodiment go from the upstream side to the downstream side in the conveyance direction of the glass substrate 16 by the conveyance apparatus 356. According to the setting, the setting is gradually narrowed.
  • the arrangement pitch PT1 between the first nozzle 358a arranged at the most upstream position and the second nozzle 358b adjacent on the downstream side is maximized
  • the second The arrangement pitch PT2 between the nozzle 358b and the third nozzle 358c adjacent to the downstream side is the second size
  • the arrangement pitch PT3 between the third nozzle 358c and the fourth nozzle 358d adjacent to the downstream side thereof is the third size
  • the arrangement pitch PT4 between the fourth nozzle 358d and the fifth nozzle 358e adjacent to and downstream of the fourth nozzle 358d is the smallest.
  • the four non-treatment periods (temporal intervals) inserted between the five treatment periods in which the glass substrate 16 is chemically strengthened by the nozzles 358a to 358e are adjacent to each nozzle 358a. Since it corresponds to the arrangement pitch (spatial interval) PT1 to PT4 of ⁇ 358e, it tends to become gradually shorter as the secondary strengthening process proceeds. Specifically, after the chemical strengthening process by the first nozzle 358a is performed, the chemical strengthening process is not performed until the glass substrate 16 is transported by the transport device 356 to the processing position by the second nozzle 358b.
  • the first non-processing period is the longest according to the size of the array pitch PT1.
  • the second non-processing period after the chemical strengthening process by the second nozzle 358b until the glass substrate 16 is transported to the processing position by the third nozzle 358c is in accordance with the size of the arrangement pitch PT2. It is the second length.
  • the third non-processing period from when the chemical strengthening process is performed by the third nozzle 358c to when the glass substrate 16 is transferred to the processing position by the fourth nozzle 358d is the size of the arrangement pitch PT3. According to the third length.
  • the fourth non-processing period from when the glass substrate 16 is transferred to the processing position by the fifth nozzle 358e is the size of the arrangement pitch PT4. Accordingly, it is the shortest.
  • the chemical strengthening treatment can be performed by the nozzles 358a to 358e of the chemical strengthening treatment device 358 at an appropriate timing.
  • Embodiment 5 of the present invention will be described with reference to FIG.
  • the fifth embodiment shows a liquid crystal display device 410 in which the bezel 14 shown in the first embodiment is omitted.
  • the liquid crystal display device 410 has a bezelless structure in which the bezel 14 is not used as in the first embodiment by directly attaching the touch panel 412 to the housing 415. . Specifically, the back surface side of the outer peripheral edge of the touch panel 412 is directly placed on the receiving portion 415a of the housing 415, and is fixed through an adhesive layer FL such as an adhesive or a double-sided tape. In such a bezelless structure, the outer peripheral end of the glass substrate 416 constituting the touch panel 412 is exposed to the outside. Therefore, in the present embodiment, the chamfered portion CP is formed on the front side, that is, the edge portion on the operation side by the user, of the outer peripheral end portion of the glass substrate 416.
  • the chamfered portion CP is chamfered at the edge portion on the front side in addition to performing the processing of rounding the corners of the four corners of the end portion of the glass substrate 416 in the edge processing step in the manufacturing process of the touch panel 412. It is formed by applying. In this way, by forming the chamfered portion CP at the front edge portion at the outer peripheral end portion of the glass substrate 416, safety is ensured when the user's fingers touch the outer peripheral end portion of the glass substrate 416 exposed to the outside. can do.
  • the front side (one side) plate surface 516 a has a first surface 516 a out of the front and back plate surfaces 516 a on which the primary reinforcing layer 521 of the glass substrate 516 is formed.
  • the pattern layer 517 and the first insulating layer 519 are stacked, the second pattern layer 518 and the second insulating layer 520 are stacked on the back (the other) plate surface 516a.
  • the touch panel 612 is a surface capacitive type.
  • action, and effect as above-mentioned Embodiment 1 is abbreviate
  • the pattern layer is formed on the front (one) plate surface 616 a out of the front and back plate surfaces 616 a on which the primary reinforcing layer 621 of the glass substrate 616 is formed.
  • 23 and the insulating layer 24 are stacked, and in addition, four electrode portions 25 are formed.
  • the pattern layer 23 is made of ITO, which is a transparent conductive material, and is a planar solid pattern that covers the entire operation area of the user on the center side on the plate surface 616a of the glass substrate 616. It has a square shape.
  • the insulating layer 24 is formed so as to be laminated outside the pattern layer 23.
  • the electrode portions 25 are respectively disposed at the corner positions of the four corners viewed in a plane in the pattern layer 23.
  • a uniform electric field is generated in the plane of the pattern layer 23 and the user's finger contacts or approaches the operation surface of the touch panel 612 in this state, a capacitance is generated between the pattern layer 23 and the finger. Occurs, and the capacitance value changes. Therefore, a current proportional to the distance to the finger flows through each of the electrode portions 25 arranged at the four corners of the pattern layer 23. Thereby, the two-dimensional input position by the user with respect to the operation surface of the touch panel 612 can be detected.
  • the touch panel 712 is a resistive film type.
  • action, and effect as above-mentioned Embodiment 1 is abbreviate
  • a film 28 having a film side pattern layer 27 on the front side of the substrate side pattern layer 26 is arranged in an opposing manner.
  • the substrate-side pattern layer 26 is formed in a plurality of rows so as to extend along the X-axis direction.
  • the film-side pattern layer 27 is formed with a plurality of rows so as to extend along the Y-axis direction (direction perpendicular to (crossing) the X-axis direction).
  • the substrate-side pattern layer 26 and the film-side pattern layer 27 are orthogonal (intersect) with each other and have a matrix shape (lattice shape) when viewed in plan.
  • the substrate side pattern layer 26 and the film side pattern layer 27 are both made of ITO, which is a transparent conductive material.
  • the film 28 is made of a synthetic resin having excellent transparency and flexibility, and is pasted in a state where a predetermined gap is maintained with respect to the front surface 716a of the glass substrate 716 through a spacer (not shown). It has been.
  • the film 28 on the touch panel 712 When a user's finger or touch pen presses the film 28 on the touch panel 712 with a voltage applied to the substrate-side pattern layer 26 and the film-side pattern layer 27 for each of the plurality of rows, the film 28 is bent and operated by the pressure. A current flows when the film-side pattern layer 27 located at the position contacts the opposing substrate-side pattern layer 26. Thereby, the two-dimensional input position by the user with respect to the operation surface of the touch panel 712 can be detected.
  • the chemical strengthening treatment apparatus is exemplified in which the nozzles are arranged in pairs on both sides of the conveyance apparatus.
  • the present invention also includes the nozzles arranged on only one side of the conveyance apparatus. include.
  • the posture of the glass substrate transported by the transport device is a posture in which the short side is parallel to the X-axis direction and the long side is parallel to the Y-axis direction.
  • the glass substrate may be transported by the transport device in a posture in which the short side is parallel to the Y-axis direction and the long side is parallel to the X-axis direction.
  • the posture of the glass substrate transported by the first transport device and the second transport device is such that the short side is parallel to the X-axis direction and the long side is parallel to the Y-axis direction.
  • the glass substrate may be transported by the first transport device and the second transport device in a posture in which the short side is parallel to the Y-axis direction and the long side is parallel to the X-axis direction.
  • the posture of the glass substrate transported by the first transport device is the first posture in which the short side is parallel to the X-axis direction and the long side is parallel to the Y-axis direction.
  • the posture of the glass substrate conveyed by the second conveying device is illustrated as a second posture in which the short side is parallel to the Y-axis direction and the long side is parallel to the X-axis direction.
  • the glass substrate may be transported in the above-described second posture by the first transport device, and the glass substrate may be transported in the above-described first posture by the second transport device.
  • the glass substrate is rotated by an angle range of about 90 degrees by the turntable.
  • the specific rotation angle range of the glass substrate by the turntable is 90 degrees. Other than these, it can be changed as appropriate.
  • the chemical strengthening processing apparatus is configured and the arrangement pitches of the adjacent nozzles are all different in the conveyance direction of the glass substrate by the conveyance apparatus, but is equal to the arrangement pitch of the nozzles. There may be a part of
  • the chemical strengthening apparatus is configured and the arrangement pitch of the adjacent nozzles in the transport direction of the glass substrate by the transport device tends to gradually narrow from the upstream side toward the downstream side.
  • the arrangement pitch of each nozzle tends to gradually increase from the upstream side toward the downstream side is also included in the present invention.
  • the chemical strengthening apparatus is configured, and the arrangement pitch of the adjacent nozzles in the transport direction of the glass substrate by the transport device tends to gradually narrow from the upstream side toward the downstream side.
  • this configuration it is of course possible to apply this configuration to those described in the first to third embodiments and the fifth to eighth embodiments.
  • the end face of the glass substrate is obtained by using a chemical strengthening treatment apparatus equipped with a nozzle for spraying a chemical strengthening treatment liquid and performing a local spraying type chemical strengthening treatment in the secondary strengthening step
  • the end face of the glass substrate is used as a chemical strengthening treatment apparatus having a chemical strengthening treatment tank filled with a chemical strengthening treatment liquid.
  • the chemical strengthening treatment step After locally heating with a laser beam or the like (heating step), only the end surface of the glass substrate is immersed in the chemical strengthening treatment liquid in the chemical strengthening treatment tank (chemical strengthening treatment step). Only the end face may be selectively chemically strengthened to form a secondary reinforcing layer, that is, a local immersion chemical strengthening process may be performed.
  • the one provided with a laser head that emits laser light as a heating device is used to locally heat the end surface of the glass substrate in the heating process. It is also possible to use a heating device provided with heating means other than laser light.
  • the end face of the glass substrate is heated over the entire circumference in the secondary strengthening process (heating process), and then the chemical strengthening treatment liquid is adhered (chemical strengthening process process).
  • the secondary strengthening layer was formed over the entire circumference of the end face was shown, for example, by partially heating the end face of the glass substrate in the secondary strengthening step and then attaching the chemical strengthening treatment liquid to the heated part, What formed the secondary reinforcement layer in a part in the end surface of a glass substrate is also contained in this invention.
  • the laser type is exemplified as the dividing device constituting the manufacturing apparatus, but a mechanical type can also be used as the dividing device.
  • the mechanical dividing device is provided with a grooving blade such as a diamond chip or a carbide cutting wheel, for example, and in the dividing process, the grooving (scribing) is performed on the planned dividing line of the glass substrate base material using the grooving blade. Then, after forming a linear crack on the surface, the glass substrate base material may be mechanically cleaved along the linear crack.
  • a material having a lithium ion on the surface is used as the material of the glass substrate in the primary strengthening step and the secondary strengthening step.
  • a molten salt containing sodium is used as the chemical strengthening treatment liquid, and the chemical strengthening treatment by ion exchange is performed by exchanging lithium ions of the glass substrate and sodium ions of the chemical strengthening treatment liquid. I do not care.
  • a compression layer which is a primary strengthening layer
  • a compressed layer which is a primary reinforcing layer
  • an air cooling strengthening method physical strengthening method
  • ITO is exemplified as the transparent conductive material used for the pattern layer, but it is of course possible to use ZnO (Zinc Oxide) as the transparent conductive material.
  • ZnO Zinc Oxide
  • the projected capacitive type, the surface capacitive type, and the resistive film type are exemplified as the touch panel, but the pattern layer is laminated on the plate surface of the glass substrate.
  • the present invention can be applied to an electromagnetic induction type touch panel.
  • the liquid crystal display device in which only the liquid crystal panel is integrated with the touch panel is shown.
  • the liquid crystal panel and the backlight device can be integrated with the touch panel.
  • the backlight device may be integrated with the liquid crystal panel in advance, and the liquid crystal panel may be integrated with the touch panel.
  • the edge light type is exemplified as the backlight device included in the liquid crystal display device, but the present invention includes a backlight device of a direct type.
  • liquid crystal display device having a vertically long display screen is exemplified, but a liquid crystal display device having a horizontally long display screen is also included in the present invention.
  • a liquid crystal display device having a square display screen is also included in the present invention.
  • a TFT is used as a switching element of a liquid crystal display device.
  • the present invention can also be applied to a liquid crystal display device using a switching element other than TFT (for example, a thin film diode (TFD)).
  • a switching element other than TFT for example, a thin film diode (TFD)
  • the present invention can also be applied to a liquid crystal display device for monochrome display.
  • the liquid crystal display device using a liquid crystal panel as the display panel has been exemplified.
  • the present invention is applicable to a display device using another type of display panel (such as a PDP or an organic EL panel). Applicable. In that case, the backlight device can be omitted.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Position Input By Displaying (AREA)
  • Surface Treatment Of Glass (AREA)

Abstract

L'invention concerne un procédé de fabrication de dispositifs d'entrée de position et un dispositif de fabrication de dispositifs d'entrée de position, qui permettent d'obtenir des améliorations telles que des réductions de coût, de poids et d'épaisseur. Ledit procédé de fabrication de panneaux tactiles (dispositifs d'entrée de position) (12) comprend : une étape de renforcement principale au cours de laquelle une couche de renforcement principale (21) est formée sur la surface du matériau de base d'un substrat de verre (16M) à partir duquel une pluralité de substrats de verre (16) peut être produite ; une étape de formation de motifs au cours de laquelle des couches de motifs (17 et 18) permettant de détecter une entrée de position sont superposées à l'extérieur de la couche de renforcement principale (21) sur le matériau de base du substrat de verre (16M) ; une étape de segmentation au cours de laquelle le matériau de base du substrat de verre (16M) est segmenté, ce qui permet de produire une pluralité de substrats de verre (16) ; et une étape de renforcement secondaire au cours de laquelle un processus de trempe chimique utilisant un échange ionique est exécuté à plusieurs reprises, avec des intervalles entre elles, sur les surfaces de rebord (16b) des substrats de verre produits (16) afin de former des couches de renforcement secondaires (22).
PCT/JP2011/065844 2010-08-20 2011-07-12 Procédé et dispositif de fabrication de dispositifs d'entrée de position WO2012023360A1 (fr)

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CN201180040116.2A CN103069366B (zh) 2010-08-20 2011-07-12 位置输入装置的制造方法和位置输入装置的制造装置

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CN103412696A (zh) * 2013-07-23 2013-11-27 江苏汇银光电科技有限公司 一种单片基板电容式触摸屏的制作方法
CN103399667B (zh) * 2013-08-05 2017-02-22 江西沃格光电股份有限公司 Ogs触摸屏的制作方法
TWI518570B (zh) * 2013-10-30 2016-01-21 達鴻先進科技股份有限公司 觸控面板的製程方法、觸控面板結構及其觸控裝置

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CN103941906B (zh) * 2013-08-30 2018-01-26 上海天马微电子有限公司 一种单片式触控屏的制备方法

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