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WO2007108162A1 - Dispositif d'affichage de type composite et récepteur de télévision - Google Patents

Dispositif d'affichage de type composite et récepteur de télévision Download PDF

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Publication number
WO2007108162A1
WO2007108162A1 PCT/JP2006/322456 JP2006322456W WO2007108162A1 WO 2007108162 A1 WO2007108162 A1 WO 2007108162A1 JP 2006322456 W JP2006322456 W JP 2006322456W WO 2007108162 A1 WO2007108162 A1 WO 2007108162A1
Authority
WO
WIPO (PCT)
Prior art keywords
display element
display device
light
liquid crystal
lens
Prior art date
Application number
PCT/JP2006/322456
Other languages
English (en)
Japanese (ja)
Inventor
Naoshi Yamada
Makoto Shiomi
Original Assignee
Sharp Kabushiki Kaisha
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 Sharp Kabushiki Kaisha filed Critical Sharp Kabushiki Kaisha
Publication of WO2007108162A1 publication Critical patent/WO2007108162A1/fr

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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1347—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells
    • G02F1/13471—Arrangement of liquid crystal layers or cells in which the final condition of one light beam is achieved by the addition of the effects of two or more layers or cells in which all the liquid crystal cells or layers remain transparent, e.g. FLC, ECB, DAP, HAN, TN, STN, SBE-LC cells
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
    • G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour 
    • G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour  based on liquid crystals, e.g. single liquid crystal display cells
    • G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
    • G02F1/1333—Constructional arrangements; Manufacturing methods
    • G02F1/1335—Structural association of cells with optical devices, e.g. polarisers or reflectors
    • G02F1/133526—Lenses, e.g. microlenses or Fresnel lenses
    • G—PHYSICS
    • G02—OPTICS
    • G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
    • G02F2203/00—Function characteristic
    • G02F2203/03—Function characteristic scattering

Definitions

  • the present invention relates to a composite display device that displays an image by stacking a plurality of display elements in which a plurality of pixels are arranged, and a television receiver using the composite display device.
  • a general liquid crystal display device displays an image by enclosing a liquid crystal between a pair of sandwiched transparent substrates and electrically changing the optical characteristics of the liquid crystal.
  • FIG. 8 shows a schematic cross-sectional view of a liquid crystal panel (hereinafter referred to as an MVA liquid crystal panel) constituting the MVA liquid crystal display device
  • FIG. 9 shows a schematic perspective view.
  • the MVA liquid crystal panel has a color filter substrate 220 and an active matrix substrate 230 facing each other between a pair of polarizing plates, plastic beads, a color filter substrate 220 and the like.
  • the columnar resin structure provided in is used as a structure that keeps the distance between the substrates constant.
  • Liquid crystal is sealed between a pair of substrates (color filter substrate 220 and active matrix substrate 230), and a vertical alignment film 225 is formed on the surface of each substrate in contact with the liquid crystal.
  • liquid crystal a nematic liquid crystal having negative dielectric anisotropy is used.
  • alignment direction of liquid crystal molecules when a voltage is applied is defined using alignment control protrusions 222 and slits that define the alignment direction of the liquid crystal.
  • MVA features a wide viewing angle by using multiple alignment regions.
  • the color filter substrate 220 is obtained by forming a color filter 221, a black matrix 224, etc. on a transparent substrate 210.
  • the alignment direction of liquid crystal molecules when a voltage is applied is defined using alignment control protrusions 222 and slits that define the alignment direction of the liquid crystal.
  • Patent Document 2 has a configuration in which liquid crystal panels are overlapped. A liquid crystal display device in which a guest-host mode panel containing a dichroic dye in a liquid crystal is laminated is disclosed.
  • Patent Document 3 two liquid crystal panels are overlapped so that each polarizing plate forms a cross nicol with each other, and an image is displayed with the product of the gradations of the two panels.
  • a composite liquid crystal display device that can be improved.
  • Patent Document 1 Japanese Patent Publication “Japanese Patent Laid-Open No. 2001-83523” (Released on March 30, 2001)
  • Patent Document 2 Japanese Patent Publication “Japanese Patent Laid-Open No. 63-25629 (Publication Date: February 3, 1988)”
  • Patent Document 3 Japanese Patent Publication “JP-A-5-88197 (Publication Date: April 9, 1993)”
  • Patent Document 2 and Patent Document 3 when two liquid crystal panels are stacked, the light power S is transmitted through the two liquid crystal panels. This causes a problem that the display quality is deteriorated.
  • Patent Document 3 by laminating panels with pixels with a fine periodic structure, moire due to the periodic structure such as black matrix and metal wiring becomes remarkable, and the display quality is significantly reduced. There was a possibility of making it.
  • the present invention has been made in view of the above-described problems, and its object is to suppress moiré that occurs when two or more display elements are optically superimposed, thereby reducing display quality. Is to provide a composite display device capable of preventing the above and a television receiver using the same
  • the composite display device of the present invention includes a first display element composed of a transmissive liquid crystal display element in which a plurality of pixels are arranged, and a plurality of pixels.
  • a composite display device including at least a second display element comprising a liquid crystal display element or an EL (electro luminescence) display element, and displaying the first display element and the second display element in an optically stacked manner
  • a second display element between the first display element and the second display element.
  • a light scattering lens layer including at least one light scattering lens for scattering light emitted from the display element to the first display element is provided.
  • the second display element force scatters the light emitted to the first display element between the optically stacked first display element and the second display element.
  • the second display element force converts the emitted light into spatially blurred light and converts the light to the first display element. It is possible to irradiate the display element.
  • the light scattering lens may be disposed at a position corresponding to each pixel of the second display element.
  • the light scattering lens can easily adjust the scattering state of the light scattering state) by simply adjusting the material and shape of each lens.
  • each lens is arranged at a position corresponding to each pixel of the second display element, so that the light emitted from each pixel of the second display element is reliably scattered in the first state. Can be emitted to the display element.
  • the light scattering lens has a bottom surface that is a light emission surface having a square shape, and at least one side of the bottom surface is parallel to the polarization direction of the light emitted from the second display element. Preferably there is.
  • the light scattering lens has a bottom surface that is a light emission surface having a square shape, and at least one side of the bottom surface is a polarization direction of light emitted from the second display element.
  • the light emitted from the second display element can be transmitted through the light scattering lens without waste.
  • This improves the light use efficiency in the light scattering lens, so that the light emitted from the second display element can be transmitted to the first display element without waste. As a result, it is possible to prevent a decrease in luminance in the first display element.
  • the light scattering lens is preferably a quadrangular pyramid lens.
  • the light scattering lens is a quadrangular pyramid lens, so that the side of the bottom surface is adjusted in parallel to the polarization direction of the light emitted from the second display element. Is easier. Moreover, in the case of a quadrangular pyramid lens, a lens array can be easily manufactured with a mold pattern using a resin.
  • the light scattering lens is preferably a quadrangular pyramid lens having a flat top.
  • the light scattering lens is a square pyramid lens having a flat top, so that the light from the front emitted from the second display element is incident on the top of the lens. Can be incident. Thereby, the light emitted from the second display element can be efficiently incident on the lens, so that the luminance of the first display element can be improved.
  • the pixel pitch of the second display element may be larger than the pixel pitch of the first display element.
  • the pixel pitch of the second display element is larger than the pixel pitch of the first display element, so that the adjacent display elements have the same period due to the same pixel pitch.
  • the number of structures can be reduced.
  • the light scattering lens may be arranged so that the light emitted from the second display element is incident between the adjacent pixels of the first display element in an overlapping manner. Good.
  • the light scattering lens is disposed so that the light emitted from the second display element is incident between the adjacent pixels of the first display element in an overlapping manner.
  • the light shielding film black matrix, etc.
  • the light diffusing lens may be disposed such that a light emitting surface faces a light shielding film provided between the pixels of the first display element.
  • the light diffusing lens is disposed so that the light emitting surface faces the light shielding film provided between the pixels of the first display element. Since the light emitted from the light diffusion lens is diffused and emitted to the light shielding film provided between the pixels, the moire fringes due to the light shielding film on the display surface side of the first display element. Can be made inconspicuous.
  • the first display element and the second display element may each be configured by a liquid crystal panel sandwiched between polarizing elements arranged in a cross-coll.
  • each of the first display element and the second display element is configured by the liquid crystal panel sandwiched between the polarizing elements arranged in the crossed nicols, and thus in the front direction.
  • the leakage light in the direction of the transmission axis of the polarizing element can be cut off by the polarization axis of the next polarizing element.
  • the coll angle which is the intersection angle of the polarization axes of adjacent polarizing elements, collapses, no increase in the amount of light due to light leakage is observed. In other words, black does not easily float with respect to the spread of the ⁇ col angle at an oblique viewing angle.
  • the television receiver of the present invention is a television receiver including a tuner unit that receives a television broadcast and a display device that displays the television broadcast received by the tuner unit.
  • the apparatus is characterized by using the above-described composite display device. [0037] According to the above configuration, it is possible to display a video with high display quality with little moire.
  • FIG. 1 is a schematic sectional view of a liquid crystal display device according to an embodiment of the present invention.
  • FIG. 2 is a diagram showing the positional relationship between a polarizing plate and a panel in the liquid crystal display device shown in FIG.
  • FIG. 3 is a plan view of the vicinity of a pixel electrode of the liquid crystal display device shown in FIG.
  • FIG. 4 is a schematic configuration diagram of a drive system that drives the liquid crystal display device shown in FIG.
  • FIG. 5 is a diagram showing a connection relationship between a driver of the liquid crystal display device shown in FIG. 1 and a panel drive circuit.
  • FIG. 6 is a schematic configuration diagram of a backlight included in the liquid crystal display device shown in FIG.
  • FIG. 7 is a block diagram of a display controller that is a drive circuit for driving the liquid crystal display device shown in FIG.
  • FIG. 8 is a schematic cross-sectional view of a liquid crystal display device with one liquid crystal panel.
  • FIG. 9 is a diagram showing an arrangement relationship between a polarizing plate and a panel in the liquid crystal legal apparatus shown in FIG.
  • FIG. 10 is a schematic sectional view of a general EL element.
  • FIG. 11 (a) is a diagram for explaining a conventional active matrix EL display element using a typical TFT.
  • FIG. 11 (b) is a diagram illustrating a conventional active matrix EL display element using a typical TFT.
  • FIG. 11 (c) is a diagram illustrating a conventional active matrix EL display element using a typical TFT.
  • FIG. 11 (d) is a diagram illustrating an active matrix EL display element using a typical conventional TFT.
  • FIG. 12 (a) is a plan view of the light scattering lens layer of Example 1 of the present invention.
  • FIG. 12 (b) is a schematic cross-sectional view of the light scattering lens layer of Example 1 of the present invention.
  • FIG. 13 is a diagram for explaining a modification of the lens constituting the light scattering lens layer of Example 1 of the present invention. It is.
  • FIG. 14 is a diagram illustrating a modification of the lens constituting the light scattering lens layer of Example 1 of the present invention.
  • FIG. 15 is a view for explaining a modification of the lens constituting the light scattering lens layer of Example 1 of the present invention.
  • FIG. 16 is a schematic diagram illustrating light scattering when a convex lens is used.
  • ⁇ 17 (a)] is a plan view of the light scattering lens layer of Example 2 of the present invention.
  • ⁇ 17 (b)] is a schematic sectional view of the light scattering lens layer of Example 2 of the present invention.
  • FIG. 18 (a)] is a diagram for explaining the relationship between polarized light and the quadrangular pyramid lenses that constitute the light scattering lens layer of Example 2 of the present invention.
  • FIG. 18 (b)] is a view for explaining the relationship between the polarized light and the quadrangular pyramid lenses constituting the light scattering lens layer of Example 2 of the present invention.
  • [19 (a)] A diagram showing the relationship between the plane of incidence of general light, s-polarized light, and p-polarized light.
  • FIG. 19 (b) This is a graph showing the energy reflectance 'transmittance curve for s-polarized light and p-polarized light shown in FIG. 19 (a).
  • FIG. 20 is a diagram illustrating a quadrangular pyramid-shaped lens according to Example 3 of the present invention.
  • ⁇ 21 A diagram for explaining a modification of the fourth embodiment of the present invention.
  • FIG. 22 is a diagram for explaining a pixel size according to the fourth embodiment of the present invention.
  • FIG. 22C is a diagram illustrating the pixel size according to the fourth embodiment of the present invention.
  • FIG. 23 is a diagram for explaining a pixel size of a modification of the fifth embodiment of the present invention.
  • FIG. 24 is a schematic cross-sectional view of a composite liquid crystal display device according to Embodiment 6 of the present invention.
  • FIG. 25 is a diagram for explaining an application example when the pixel sizes are the same in the composite liquid crystal display device according to Embodiment 6 of the present invention.
  • FIG. 26 is a diagram for explaining a modification of the sixth embodiment of the present invention.
  • FIG. 27 is a schematic block diagram of a television receiver including the liquid crystal display device of the present invention.
  • FIG. 28 is a block diagram showing a relationship between a tuner unit and a liquid crystal display device in the television receiver shown in FIG.
  • FIG. 29 is an exploded perspective view of the television receiver shown in FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • FIG. 1 is a diagram showing a schematic cross section of a liquid crystal display device 100 according to the present embodiment.
  • the liquid crystal display device 100 includes a first panel 101 as a first display element, a second panel 102 as a second display element, and a polarizing plate (polarizing element) A , B and C are alternately laminated.
  • a light scattering lens layer 1 including at least one light scattering lens for scattering light emitted to the first panel 102 is provided on the second panel 102 side of the polarizing plate B. . Details of the light scattering lens layer 1 will be described later.
  • FIG. 2 is a diagram showing a conceptual arrangement of the polarizing plate and the liquid crystal panel in the liquid crystal display device 100 shown in FIG.
  • polarizing plates A and B and polarizing plates B and C are configured with their polarization axes orthogonal to each other. That is, polarizing plates A and B and polarizing plates B and C are arranged in crossed Nicols.
  • Each of the first panel 101 and the second panel 102 has a liquid crystal sealed between a pair of transparent substrates (the color filter substrate 220 and the active matrix substrate 230) to electrically align the liquid crystal.
  • the light source power is also provided with a means for arbitrarily changing the state where the polarized light incident on the polarizing plate A is rotated about 90 degrees, the state where the polarized light is not rotated, and the intermediate state.
  • Each of the first panel 101 and the second panel 102 includes a color filter, and has a function of displaying an image with a plurality of pixels.
  • Display methods with such functions include TN (Twisted Nematic) method, VA (Vertical Alignment) method, IPS (In PI ain Switching) method, FFS method (Fringe Field Switching) method, or a combination of these methods.
  • the VA method with high contrast is suitable even when the force alone is used.
  • the MVA (Multidomain Vertical Alignment) method is used here for explanation, but the IPS method and the FFS method are also normally black methods, so they are sufficiently effective.
  • the drive system uses active matrix drive by TFT (Thin Film Transistor).
  • the first panel 101 and the second panel 102 in the liquid crystal display device 100 have the same structure.
  • the color filter substrate 220 and the active matrix substrate 230 facing each other are provided. It has a structure in which plastic beads or a columnar resin structure provided on the color filter substrate 220 or the like is used as a spacer (not shown) to keep the substrate interval constant.
  • Liquid crystal is sealed between a pair of substrates (color filter substrate 220 and active matrix substrate 230), and a vertical alignment film 225 is formed on the surface of each substrate in contact with the liquid crystal.
  • a nematic liquid crystal having negative dielectric anisotropy is used as the liquid crystal.
  • the color filter substrate 220 is obtained by forming a color filter 221, a black matrix 224, etc. on a transparent substrate 210.
  • An alignment control protrusion 222 that defines the alignment direction of the liquid crystal is formed.
  • the active matrix substrate 230 includes a TFT element 203, a pixel electrode 208, and the like formed on a transparent substrate 210, and an alignment control protrusion 222 that defines the alignment direction of the liquid crystal. And a slit pattern 211.
  • the alignment matrix protrusions 222 shown in FIG. 3 and the black matrix 224 for blocking unnecessary light that deteriorates the display quality are projections of the pattern formed on the color filter substrate 220 onto the active matrix substrate 230.
  • a voltage equal to or higher than the threshold is applied to the pixel electrode 208, the liquid crystal molecules fall in a direction perpendicular to the protrusions 222 and the slit pattern 211.
  • the protrusion 222 and the slit pattern 211 are formed so that the liquid crystal is aligned in the direction of 45 ° azimuth with respect to the polarization axis of the polarizing plate.
  • the positions of the red (R) green (G) blue (B) pixels of the respective color filters 221 in the first panel and the second panel coincide with each other in the vertical direction. It is configured to Specifically, the R pixel on the first panel is the R pixel on the second panel, the G pixel on the first panel is the G pixel on the second panel, and the B pixel on the first panel is The position viewed from the vertical direction coincides with the B pixel of the second panel.
  • FIG. 4 shows an outline of a drive system of the liquid crystal display device 100 having the above configuration.
  • the drive system includes a display controller necessary for displaying an image on the liquid crystal display device 100.
  • the display controller includes first and second panel drive circuits (1) and (2) for driving the first panel and the second panel with predetermined signals, respectively. Furthermore, the first and second panel drive circuits (1) and (2) have a signal distribution circuit section for distributing video source signals.
  • the input signal represents not only a powerful video signal such as a TV receiver, VTR, or DVD, but also a signal obtained by processing these signals.
  • the display controller sends a signal to each panel so that an appropriate image can be displayed on the liquid crystal display device 100.
  • the display controller is a device for sending an appropriate electrical signal from a given video signal to the panel, and includes a driver, a circuit board, a panel drive circuit, and the like.
  • FIG. 5 shows the connection relationship between the first and second panels and the panel drive circuits.
  • the polarizing plate is omitted.
  • the first panel drive circuit (1) is connected to a terminal (1) provided on the circuit board (1) of the first panel via a driver (TCP) (1).
  • a driver (TCP) (1) is connected to the first panel, connected by the circuit board (1), and connected to the panel drive circuit (1).
  • connection of the second panel drive circuit (2) in the second panel is the same as that in the first panel, the description thereof is omitted.
  • the pixels of the first panel are driven based on the display signal, and the pixels of the second panel corresponding to the positions of the first panel pixels and the positions viewed from the vertical direction of the panel are the following: Driven corresponding to the first panel. If the part composed of Polarizer A, the first panel, and Polarizer B (Component 1) is in the transmissive state, the part composed of Polarizer B, the second panel, and Polarizer C (Component) 2) is also in a transmissive state, and when component 1 is in a non-transmissive state, component 2 is also driven to be in a non-transmissive state.
  • the same image signal may be input to the first and second panels, or different signals associated with each other may be input to the first and second panels.
  • a sputtering signal wiring (gate wiring or gate bus line) 201 and auxiliary capacitance wiring 202 are formed by sputtering to form a ⁇ / ⁇ 1 / Ti laminated layer.
  • a metal such as a film is formed, a resist pattern is formed by a photolithography method, dry etching is performed using an etching gas such as a chlorine-based gas, and the resist is peeled off.
  • the scanning signal wiring 201 and the auxiliary capacitance wiring 202 are simultaneously formed on the transparent substrate 210.
  • a gate insulating film such as silicon nitride (SiNx), an active semiconductor layer made of amorphous silicon, or the like, an amorphous silicon doped with phosphorus or the like, and a low resistance semiconductor layer also made of amorphous silicon or the like are formed by CVD, and thereafter
  • a metal such as AlZTi is formed by sputtering, and a resist pattern is formed by photolithography. Form and dry-etch using an etching gas such as a chlorine-based gas to remove the resist.
  • an etching gas such as a chlorine-based gas
  • the auxiliary capacitance is formed by sandwiching a gate insulating film of about 4000 A between the auxiliary capacitance wiring 202 and the auxiliary capacitance forming electrode 206.
  • the TFT element 203 is formed by dry etching the low resistance semiconductor layer using chlorine gas or the like for source / drain separation.
  • an interlayer insulating film 207 having a force such as an acrylic photosensitive resin is applied by spin coating, and a contact hole (not shown) for electrically contacting the drain lead wiring 205 and the pixel electrode 208 is formed. It is formed by photolithography.
  • the film thickness of the interlayer insulating film 207 is about 3 m.
  • the pixel electrode 208 and a vertical alignment film are formed in this order.
  • this embodiment is an MVA type liquid crystal display device, and a slit pattern 211 is provided in a pixel electrode 208 made of ITO or the like. Specifically, a film is formed by sputtering, a resist pattern is formed by a photolithography method, and ferric chloride is used. Etching is performed with any etching solution to obtain a pixel electrode pattern as shown in FIG.
  • an active matrix substrate 230 is obtained.
  • reference numerals 212a, 212b, 212c, 212d, 212e, and 212f shown in FIG. 3 denote electrical connection portions of slits formed in the pixel electrode 208. At the electrical connection portion in the slit, the orientation is disturbed and an orientation abnormality occurs. However, for the slits 212a to 212d, in addition to the alignment abnormality, the voltage supplied to the gate wiring is normally applied with a positive potential supplied to operate the TFT element 203 in the on state. The time for applying the negative potential supplied to operate the TFT element 203 in the off state is normally on the order of milliseconds, and therefore the time for applying the negative potential is dominant.
  • the slits 212a to 212d are positioned on the gate wiring, impurity ions contained in the liquid crystal gather due to the gate minus DC application component, which may be visually recognized as display unevenness. Therefore, since the slits 212a to 212d need to be provided in a region that does not overlap with the gate wiring in a plan view, it is desirable to hide the slits 212a to 212d with the black matrix 224 as shown in FIG.
  • the color filter substrate 220 is formed on a transparent substrate 210, a color filter layer made of three primary colors (red, green, blue) 221 and a black matrix (BM) 224, a counter electrode 223, and a vertical alignment.
  • a film 225 and an alignment control protrusion 222 are provided.
  • a negative acrylic photosensitive resin solution in which carbon fine particles are dispersed is applied onto the transparent substrate 210 by spin coating, followed by drying to form a black photosensitive resin layer. Subsequently, after the black photosensitive resin layer is exposed through a photomask, development is performed to form a black matrix (BM) 224. At this time, openings for the first colored layer are respectively formed in regions where the first colored layer (for example, red layer), the second colored layer (for example, green layer), and the third colored layer (for example, blue layer) are formed.
  • the BM is formed so that an opening for the second colored layer and an opening for the third colored layer (each opening corresponds to each pixel electrode) are formed. More specifically, as shown in FIG.
  • a BM pattern is formed in an island shape to shield the alignment abnormal region generated in the slits 212a to 212d of the electrical connection portions of the slits 212a to 212f formed in the pixel electrode 208.
  • a leak that is optically excited by external light entering the TFT element 203 In order to prevent an increase in current, a light shielding part (BM) is formed on the TFT element 203.
  • the second color layer for example, the green layer
  • the third color layer for example, the blue layer
  • a counter electrode 223 having a transparent electrode force such as ITO is formed by sputtering, and then a positive type phenol novolac photosensitive resin solution is applied by spin coating, followed by drying and a photomask. Then, exposure and development are performed to form a protrusion 222 for controlling vertical alignment. Further, a columnar spacer (not shown) for defining the cell gap of the liquid crystal panel is formed by applying an acrylic photosensitive resin solution, exposing, developing and curing with a photomask.
  • the color filter substrate 220 is formed.
  • a BM made of a force metal as shown in the case of BM made of a resin may be used.
  • the three primary color layers may include cyan, magenta, yellow, and other white layers as well as red, green, and blue, and may include a white layer.
  • a method for manufacturing a liquid crystal panel (first panel, second panel) using the color filter substrate 220 and the active matrix substrate 230 manufactured as described above will be described below.
  • a vertical alignment film 225 is formed on the surface of the color filter substrate 220 and the active matrix substrate 230 that are in contact with the liquid crystal. Specifically, baking is performed as a degassing treatment before the alignment film is applied, and then substrate cleaning and alignment film application are performed. After the alignment film is applied, the alignment film is baked. After the alignment film is applied and washed, further baking is performed as a degassing process.
  • the vertical alignment film 225 defines the alignment direction of the liquid crystal 226.
  • an injection port is provided for injecting a part of the thermosetting seal resin around the substrate for liquid crystal injection, and the injection port is immersed in liquid crystal in a vacuum and opened to the atmosphere. Inject liquid crystal, and then seal the injection port with UV-curing resin, etc. You may carry out by the method.
  • the vertical alignment liquid crystal panel has a drawback that the injection time is much longer than that of the horizontal alignment panel.
  • explanation is given by the liquid crystal drop bonding method.
  • a UV curable sealant is applied around the active matrix substrate side, and liquid crystal is dropped onto the color filter substrate by a dropping method.
  • the optimal amount of liquid crystal is regularly dropped on the inner part of the seal so that the desired cell gap is achieved by liquid crystal by the liquid crystal dropping method.
  • the atmosphere in the bonding apparatus is reduced to lPa, and under this reduced pressure, the substrate After bonding, the seal portion is crushed by setting the atmosphere to atmospheric pressure, and the desired gap of the seal portion is obtained.
  • the structure having a desired cell gap in the seal portion is subjected to UV irradiation with a UV curing device to temporarily cure the seal resin.
  • beta is performed to final cure the seal resin.
  • the liquid crystal spreads inside the seal resin and the liquid crystal is filled in the cell.
  • the liquid crystal panel is completed by dividing the structure into liquid crystal panel units after the beta is completed.
  • the first panel and the second panel are manufactured by the same process.
  • a polarizing plate is attached to each panel. Specifically, as shown in FIG. 4, polarizing plates A and B are attached to the front and back surfaces of the first panel, respectively. Also, attach polarizing plate C to the back of the second panel. Then, the light scattering lens layer 1 is attached to the surface of the second panel. The arrangement of light scattering lens layer 1 and polarizing plate B can be reversed. Here, if necessary, an optical compensation sheet or the like may be laminated on the polarizing plate.
  • a driver (LCD driving LSI) is connected.
  • the driver will be described using a TCP (Tape Carrier Package) connection.
  • the ACF (Anisotropic) is connected to the terminal portion (1) of the first panel.
  • TCP (1) After pre-crimping (Conductive Film), install TCP (1) with a driver on the carrier tape. Punch out, align with the panel terminal electrode, heat, and press-fit. After that, the circuit board (1) for connecting the drivers TCP (l) to each other and the input terminal (1) of TCP (l) are connected by ACF.
  • the two panels are bonded together. Clean the surface of the 2nd panel, peel off the adhesive layer of the polarizing plate B attached to the 1st panel, align it precisely, and paste the 1st panel and the 2nd panel together . At this time, since bubbles may remain between the panel and the adhesive layer, it is desirable to bond them under vacuum.
  • an adhesive that cures at room temperature or below the heat resistance temperature of the panel such as an epoxy adhesive
  • a plastic spacer is sprayed, for example, fluorine. Oil or the like may be enclosed.
  • a liquid that is optically isotropic and has a refractive index comparable to that of a glass substrate to prevent reflection and is as stable as liquid crystal is desirable.
  • this embodiment can also be applied to the case where the terminal surface of the first panel and the terminal surface of the second panel are at the same position as described in FIGS. 4 and 5. . Also, there are no particular restrictions on the direction of terminals and the method of bonding to the panel. For example, a mechanical fixing method may be used regardless of adhesion.
  • the liquid crystal display device 100 is obtained by integrating with a lighting device called a backlight.
  • the liquid crystal display device 100 of the present invention is required to have the ability to provide a larger amount of light than the conventional panel, based on the display principle. However, since the short wavelength absorption becomes more noticeable even in the wavelength region, it is necessary to use a blue light source with a shorter wavelength on the lighting device side. An example of a lighting device that satisfies these conditions is shown in FIG.
  • Hot cathode lamps are cold cathode lamps used in general specifications. It is characterized by being able to output about 6 times the amount of light from the amplifier.
  • a 37-inch diagonal WXGA as an example of a standard liquid crystal display device, 18 lamps with an outer diameter of 15 mm are placed on a housing made of aluminum.
  • this housing is provided with a white reflective sheet using foamed resin.
  • a driving power source for the lamp is disposed on the rear surface of the housing, and the lamp is driven by electric power supplied from a household power source.
  • a milky white resin board is required to extinguish the lamp image in the direct type backlight in which a plurality of lamps are arranged in this nodding.
  • a plate member based on polycarbonate which is 2 mm thick and absorbs warp and heat deformation, is placed in the housing on the lamp, and the optical sheet to obtain the predetermined optical effect on its upper surface, specifically this time
  • a diffusion sheet, a lens sheet, a lens sheet, and a polarized light reflection sheet are arranged.
  • This specification makes it possible to obtain a backlight brightness that is about 10 times that of the general specifications of 18 cold-cathode lamps with a diameter of 4 mm, two diffuser sheets, and a polarizing reflection sheet.
  • a 37-inch liquid crystal display device can obtain a luminance of about 400 cdZm 2 .
  • the mechanism member of the present lighting device serves as the main mechanism member of the entire module, and the liquid crystal display controller including the panel mounted circuit and the signal distributor, wherein the mounted panel is disposed on the backlight.
  • a liquid crystal module is completed by installing a power source for the light source and, in some cases, a general household power source.
  • the mounted panel is disposed in the backlight, and a frame body that holds the panel is installed to provide the liquid crystal display device of the present invention.
  • a direct illumination device using a hot cathode tube is shown.
  • a light source that may be a projection method or an edge light method is a cold cathode tube, an LED, an OEL, An electron fluorescent tube or the like may be used, and it is possible to appropriately select a combination of optical sheets and the like.
  • a method for controlling the alignment direction of vertically aligned liquid crystal molecules of liquid crystal As a method, in the embodiment described above, a slit is provided on the pixel electrode of the active matrix substrate and a protrusion for alignment control is provided on the color filter substrate side. However, these may be reversed. It may be a structure with slits, or an MVA liquid crystal panel in which projections for orientation control are provided on the electrode surfaces of both substrates.
  • a method using vertical alignment films in which pretilt directions (alignment treatment directions) defined by a pair of alignment films other than the MVA type are orthogonal to each other may be used.
  • pretilt directions alignment treatment directions
  • VA mode alignment of the liquid crystal molecules
  • the VATN method is more preferable for the present invention because there is no decrease in contrast due to light leakage at the alignment control protrusion.
  • the pretilt is formed by optical alignment or the like.
  • the input signal (video source) is subjected to drive signal processing such as y conversion and overshoot, and the source driver of the first panel (source drive means) Output 8-bit gradation data.
  • the panel drive circuit (2) performs signal processing such as ⁇ conversion and overshoot, and outputs 8-bit gradation data to the source driver (source drive means) of the second panel.
  • the first panel, the second panel, and the output image output as a result are 8 bits, one-to-one correspondence with the input signal, and an image faithful to the input image.
  • the second panel shown in FIG. 1 is not limited to this.
  • an EL display panel using an EL (electroluminescence) element may be used as the same hold type display panel. Oh ,.
  • FIG. 10 shows a schematic cross-sectional view of the EL element.
  • Transparent electrode such as ITO (positive electrode) formed on a transparent substrate 250 such as glass Pole
  • ITO positive electrode
  • FIG. 10 shows a schematic cross-sectional view of the EL element.
  • Transparent electrode such as ITO (positive electrode) formed on a transparent substrate 250 such as glass Pole
  • sealing layer 257 that protects the device
  • positive and negative carriers are injected from hole injection layer 252 hole transfer layer 253 and electron transfer layer 255 into EL layer 254, and the carrier Emits light when they recombine, and light is emitted from the transparent substrate.
  • the light emission direction and the electrode configuration are reversed from those in FIG.
  • the organic EL display element generally uses a TFT as an active matrix driving element, but it is better to perform current control unlike liquid crystal based on voltage control.
  • the organic EL element using TFT in this case is disclosed in the above-mentioned known document 1 and the like.
  • Fig. 11 shows a schematic diagram of the active matrix 4-terminal TFT-EL device described in Known Document 1. An enlarged view of the dotted line in Fig. 11 (a) is shown in Fig. 11 (b).
  • Figures 11 (c) and 11 (d) are cross-sectional views taken along line A-A B- in Figure 11 (b).
  • Each pixel element includes two TFTs, a storage capacitor CS, and an EL element.
  • the main feature of the 4-terminal system is that the addressing signal is separated from the EL excitation signal.
  • the EL element is selected by applying a voltage to turn on the address TFT1 (T1) from the gate bus line, and the charge supplied to the source bus line is held in the storage capacitor Cs and the TFT2 (T2) is turned on. Even after TFT1 (T1) is turned off, the electric charge held in the storage capacitor Cs controls the current flowing through the power TFT (T2). This circuit enables hold-type display with EL elements.
  • the liquid crystal and the EL are different in the optical medium material and pixel configuration, and the signal input and addressing methods are the active matrix method, just like a general TFT liquid crystal display device. Can think. Further, in the configuration as a composite display device, when an EL display element is used as the second panel as shown in FIG. 2, the light source and the polarizing plate C are not necessary. In the following description, the EL element and the liquid crystal element will be described with no particular distinction between the display elements arranged on the rearmost surface as viewed mainly from the observer side.
  • FIG. 12 (a) is a plan view of the light scattering lens layer 1 according to the present embodiment
  • FIG. 12 (b) is a cross-sectional view of the light scattering lens layer 1 shown in FIG. 12 (a).
  • the light scattering lens layer 1 includes a plurality of light scattering lenses 2 arranged in a plurality of lines on a straight line in the x-axis direction, and on a straight line in the y-axis direction.
  • This is a flat lens array arranged in a plurality of rows.
  • the lens 2 is a concave lens that diffuses light from a light source as shown in FIG. 12 (b).
  • the lens 2 is arranged so that the light incident surface of the lens 2 is on the second panel 102 side, and the light emitting surface of the lens faces the first panel 101 side.
  • the light transmitted through the lens 2 is emitted from the first panel 101 in a scattered state.
  • Fig. 12 (a) shows an example in which the individual lenses 2 are arranged in a plane.
  • the force is not limited to this arrangement, and the individual lenses 2 are arranged in a plane. 2 may not be arranged on a straight line in the X-axis direction and the y-axis direction, but may be arranged randomly in each axis direction.
  • the diameter and average pitch of each lens is preferably larger than the wavelength of light and less than half the pixel pitch.
  • each lens 2 of the light scattering lens layer 1 is scattered so that light from the light source is incident from the lower surface side and emitted to the upper surface side to scatter the emitted light.
  • the arrow in the figure represents the traveling direction of light.
  • a plurality of hemispherical concave portions 10a are formed on a transparent transparent plate 10 serving as a base, and the concave portions 10a serve as the lens 2 described above.
  • the transparent plate 10 can be made of transparent resin.
  • the portion other than the lens 2 is occupied by a gas such as air or a liquid having a refractive index smaller than that of the lens resin.
  • This liquid can also be used as the liquid used when bonding the two panels described above.
  • a resin material having a large refractive index is selected so as to exhibit the effect as a lens.
  • the distance between the lenses is preferably smaller than half the pixel pitch of the display element.
  • a micro lens is generally called a micro lens, but in this case it is simply called a lens.
  • the lens can be formed by an ion exchange method, a heat sink method, or a machining method.
  • a substrate containing ions such as alkali glass is brought into contact with another ion source and another ion source is applied with a voltage, and a lens effect is obtained by utilizing the refractive index distribution generated by the ion exchange.
  • a flat lens is used.
  • a pattern of a desired shape such as a circle is formed on the photosensitive resin by mask exposure, and then heated and melted at a temperature above the melting point of the resin to form a lens-like shape by surface tension.
  • the machining method is formed by scraping the lens substrate. Further, it can be formed by transferring a mold having a lens pattern onto a thermosetting resin and curing.
  • the light scattering lens layer 1 having a function of scattering light from the light source has a configuration as shown in FIG. 13, a configuration as shown in FIG. A configuration as shown in FIG. 15 may be used.
  • FIG. 13 shows a light scattering lens layer 1 in which a plurality of spherical beads 3 are embedded in a resin 4 on the light source side so that a part of the spherical beads 3 is exposed.
  • An example is shown in which it is covered with a greaves layer 6 of fat.
  • resin 4 and spherical beads 3 use materials with a refractive index close to V, and resin 6 has a higher refractive index than resin 4 and beads 3, and uses a high refractive index resin V.
  • the lens function similar to that shown in FIG.
  • Fig. 14 shows a lens array having the same configuration as the lens array shown in Figs. 12 (a) and 12 (b), and shows an example in which the orientation with respect to the light source is opposite to that in Fig. 12 (b). Yes. In this case, the same light scattering function as that shown in FIG.
  • FIG. 15 shows an example of a two-layered resin structure having different resin material forces as the light scattering lens layer 1.
  • the light scattering lens layer 1 shown in FIG. 15 has, from the light source side, a resin layer 5 made of a low refractive index resin having a smaller refractive index than one of the resin layers, and a refractive index higher than that of the resin layer 5.
  • a resin layer 6 made of a high refractive index resin is laminated.
  • the resin layer 6 scatters incident light in the same manner as the light scattering lens layer 1 shown in FIG. 14 by forming a plurality of recesses 6a on the contact surface side with the resin layer 5. It becomes possible to make it.
  • the resin may also serve as an adhesive or pressure-sensitive adhesive for bonding with other optical members.
  • FIG. 16 shows the light diffused by the convex lens 9 between the first panel 101 and the second panel 102.
  • 3 is a schematic cross-sectional view illustrating an optical path when a random lens layer 1 is arranged.
  • Each panel is simply held between a pair of transparent substrates 210, and only pixels separated by a light shielding film 224 are shown, and a polarizing plate is also omitted.
  • the arrow indicates that the light incident on the convex lens 9 from the first panel side is emitted to the second panel side. In the case of a convex lens, there is a focal point where the emitted light is collected.
  • a force-convex lens mainly described with a concave lens can also be used as a light scattering lens.
  • a convex lens can be used for the same reason.
  • the light scattering lens layer 1 of the above example acts as a spatial low-pass filter, so that it is possible to suppress moiré that occurs when two panels are configured. .
  • Example 1 When the light-scattering lens layer 1 as shown in Example 1 is used in the composite display element having the configuration described in FIGS. 1 and 2, moire light that can reduce moire is light. When the light passes through the scattering lens layer 1, the polarized light is partially eliminated, so that the contrast may be lowered. Therefore, in Example 2 below, a light scattering lens layer that can prevent a decrease in contrast by suppressing the depolarization will be described.
  • FIG. 17 (a) is a plan view of the light scattering lens layer 21 according to the present embodiment
  • FIG. 17 (b) is a cross-sectional view of the light scattering lens layer 21 shown in FIG. 17 (a).
  • the light scattering lens layer 21 includes a plurality of light scattering lenses 7 arranged in a plurality of lines on the straight line in the x-axis direction, and on the straight line in the y-axis direction. Is a planar lens array arranged in a plurality of rows.
  • the lens 7 is a quadrangular pyramid-shaped concave lens that diffuses light from a light source.
  • the light scattering lens layer 21 can also be formed in the same manner as various modified examples (for example, modified examples as shown in FIGS. 13, 14, 15, and 16) as in the first embodiment.
  • the bottom of the quadrangular pyramid is preferably square or rectangular. That is, at least one side of the bottom surface of the lens and the polarization direction of the light emitted from the second panel 102 need to be substantially parallel.
  • FIG. 17 (a) shows an example in which the bases of the quadrangular pyramids of the lens 7 are in the x-axis direction and the y-axis direction, respectively.
  • the two polarization directions are also substantially parallel to the X-axis direction and the y-axis direction.
  • the polarization direction is the X-axis direction or a direction perpendicular to the paper surface ( ⁇ with a black dot).
  • FIGS. 18 (a) and 18 (b) are schematic diagrams for explaining the quadrangular pyramid-shaped lens 7, the incident polarized light, and the outgoing polarized light.
  • the drawings are slightly inaccurate due to the perspective views, but the ridge parallel to the bottom of the quadrangular pyramid shows the case where vertical light is incident.
  • FIG. 18 (a) shows that when the light perpendicularly incident on the bottom of the quadrangular pyramid-shaped lens 7 (light parallel to the paper surface) is incident, the polarization direction is not changed.
  • FIG. 18 (b) shows that when the light incident in parallel to the base of the quadrangular pyramid-shaped lens 7 (light perpendicular to the paper surface) is incident, the polarization direction is unchanged.
  • FIG. 19 (a) shows the relationship between the reflected light and the emitted light when the light is incident on the interface between the isotropic medium 1 and the isotropic medium 2.
  • FIG. In the figure, the plane perpendicular to the interface and including the optical path of light is generally called the incident plane. Light parallel to the incident surface is called p-polarized light, and light perpendicular to it is called s-polarized light. Note that the polarized light described in FIGS. 17 and 18 corresponds to p-polarized light or s-polarized light with respect to the side surface of the quadrangular pyramid.
  • Polarized light other than those shown in Figs. 17 and 18 is expressed as a combination of p-polarized light and s-polarized light.
  • FIG. 19 (b) shows an energy reflectivity 'transmittance curve when light is incident on a medium having a refractive index of 1.5 to a medium having a refractive index of 1.5.
  • the transmittance may be read with the vertical axis reversed.
  • the transmitted and reflected light which is a combination of p-polarized light and s-polarized light
  • the plane of polarization is somewhat rotated.
  • the lens as in Example 1 the plane of polarization of the outgoing light changes with respect to the outgoing polarized light, and the amount of light transmitted through the polarizing layer changes compared to the case without the lens.
  • the polarization is eliminated.
  • the second panel is a liquid crystal element
  • the polarization plane is incident parallel or perpendicular to the bottom of the square pyramid lens. Compared with this, the contrast is lowered.
  • the light scattering lens layer 21 of the present embodiment it is possible to provide a composite display device capable of displaying with good display quality and high contrast.
  • the lens is in the form of Example 2 described with reference to FIG. 18, the light that passes through the front is reduced due to the top of the quadrangular pyramid (the part on the light incident surface side), and the front brightness decreases. There is a risk of incurring. Therefore, in this example, as shown in FIG. 20, by using a trapezoidal lens 8 with a quadrangular pyramid apex, the light transmitted in the front direction can be increased compared to Example 2. it can. Since the polarization incident relationship is the same as that of the second embodiment, the description thereof is omitted. Manufacturing methods and modifications can be formed in the same manner as in the second embodiment. Thus, since the light is scattered by leaving the slope, the function as a spatial low-pass filter remains and moire is suppressed.
  • the polarizing plate C and the light source in FIG. 1 are unnecessary, but since the emitted light is usually non-polarized light, the first embodiment described above is used. It is more preferable to arrange the lenses 3 to 3 between the polarizing plate B and the EL element as the second panel because there is no influence of depolarization. However, in this case, 50% of the light is theoretically lost when entering the polarizing plate B. However, the light use efficiency is improved by using a reflective polarizing layer such as a brightness enhancement film DBEF manufactured by 3M. Can be increased.
  • a reflective polarizing layer such as a brightness enhancement film DBEF manufactured by 3M.
  • a reflective polarizing layer If a reflective polarizing layer is used, light perpendicular to the transmission axis of the reflective polarizing layer is reflected and returned to the light source side (in the case of the present invention, the second panel 102 side), and polarized by the influence of scattered reflection on the light source side.
  • the light utilization efficiency can be increased by re-entering the light whose direction has changed into the reflective polarizing layer and reusing it.
  • FIG. 21 shows a configuration in which a liquid crystal element is used for the first panel 101 and an EL element is used for the second panel 102.
  • the transmission axis of the reflective polarizing layer 50 is arranged in parallel with the transmission axis of the polarizing plate B on the emission surface side of the EL element, and the light scattering lens layer 1 is arranged between the polarizing plate B and the reflective polarizing layer 50.
  • the trapezoidal lens 8 of Example 3 (FIG. 20) is used for the light scattering lens layer 1, light can be used efficiently.
  • the quadrangular pyramid-shaped lens 7 of Example 2 (FIG. 18) may be used.
  • the light scattering lens layer 1 By using the light scattering lens layer 1 as in the above configuration, a composite display device capable of displaying with high display quality and high contrast can be provided. Furthermore, by arranging the reflective polarizing layer 50, it is possible to increase the luminance without increasing the power consumption and power consumption.
  • a first display element having pixels corresponding to R (red), G (green), and B (blue) as shown in Fig. 22 (a), 3 as shown in Fig. 22 (b).
  • the second panel performs monochrome display of the RGB maximum gradation or the maximum gradation calculation result of the corresponding video signal. In this case, it can be improved by mainly performing the 1S gradation expression on the first panel, which may reduce the saturation.
  • the gradation luminance characteristic of the first panel is ⁇ 1
  • the gradation luminance characteristic of the second panel is ⁇ 2
  • the gradation luminance characteristic of the composite display element that is the composite image is ⁇ out
  • ⁇ out ⁇ 1 + ⁇ 2.
  • Normally ⁇ out is adjusted to be 1.8 to 2.6.
  • saturation reduction can be suppressed.
  • the first panel and the second panel display black, and the black luminance is very low, so the contrast can be increased.
  • the pixel size of the second panel can be further increased.
  • FIG. 24 is a schematic cross-sectional view showing the relationship between the pixel 109 of the first panel 101, the pixel 110 of the second panel 102, and the lens 111.
  • polarizing plates and other components are not shown.
  • Moire due to pixel interference is largely due to the presence of the black matrix 224 of the light shielding film that separates the pixels.
  • signal wiring and scanning wiring also serve as a light shielding film, it can be replaced with a black matrix.
  • FIG. 24 shows an example in which the black matrix 224 is described in the sense of separating pixels.
  • the lens 111 is formed on the pixel 110 of the second panel to the same size as the pixel size. Unlike the first to third and fifth embodiments, the lens 111 must be aligned with the position of the pixel 110. Therefore, a method of forming a precise pattern by exposure such as a thermal sag method is desirable for forming the lens 111.
  • the part other than the lens functions as a concave lens by filling it with a resin 106 having a higher refractive index than the lens.
  • the high refractive index resin 106 may also serve as an adhesive.
  • the lens 111 can be formed by applying a method described in Japanese Patent Laid-Open No. 3-248125, which may be formed between substrates, that is, in a panel.
  • a lens 111 aligned at the position of the black matrix 224 may be used.
  • the portion other than the lens 111 needs to be filled with a material having a lower refractive index than the material of the air layer or the lens 111.
  • the lens 111 itself is a condensing lens, but if the light power passing through the pixel 109 is also seen, the light diffuses and the black matrix 224 is inconspicuous. Note that the pixel size of each panel may be different.
  • a television receiver to which the liquid crystal display device of the present invention is applied will be described below with reference to FIGS.
  • FIG. 27 shows a circuit block of a liquid crystal display device 601 for a television receiver.
  • the liquid crystal display device 601 includes a Y / C separation circuit 500, a video chroma circuit 501, an A / D converter 502, a liquid crystal controller 503, a liquid crystal node 504, a backlight drive circuit 505, The backlight 506, the microcomputer 507, and the gradation circuit 508 are provided.
  • the liquid crystal panel 504 has a two-panel configuration including a first liquid crystal panel and a second liquid crystal panel, and may have any of the configurations described in the above-described embodiments.
  • an input video signal of a television signal is input to the ⁇ / C separation circuit 500 and separated into a luminance signal and a color signal.
  • the luminance and color signals are converted into R, G, and B, which are the three primary colors of light, by the video chroma circuit 501, and this analog RGB signal is converted into a digital RGB signal by the AZD converter 502, and the liquid crystal Input to the controller 503.
  • the RGB signal from the liquid crystal controller 503 is input at a predetermined timing, and the RGB gradation voltages from the gradation circuit 508 are supplied to display an image.
  • the microcomputer 507 controls the entire system including these processes.
  • video signals various video signals such as video signals based on television broadcasting, video signals captured by a camera, video signals supplied via an Internet line, video signals recorded on a DVD, etc. Can be displayed on the basis of
  • tuner unit 600 shown in FIG. 28 receives a television broadcast and outputs a video signal, and liquid crystal display device 601 displays an image (video) based on the video signal output from tuner unit 600. Do.
  • the liquid crystal display device having the above configuration is a television receiver, for example, as shown in FIG. 29, the liquid crystal display device 601 is wrapped in a first housing 301 and a second housing 306. It is a structure that is held between.
  • the first casing 301 is formed with an opening 301a through which an image displayed on the liquid crystal display device 601 is transmitted.
  • the second casing 306 covers the back side of the liquid crystal display device 601.
  • An operation circuit 305 for operating the liquid crystal display device 601 is provided, and a support member is provided below. 308 is attached!
  • the composite display device of the present invention can be used for home TVs suitable for fields requiring high-quality display with little moire, and for broadcasting stations with little moire and high contrast. It can be applied to display devices for a very wide range of applications.

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Abstract

L'invention concerne un dispositif d'affichage de type composite comportant un premier panneau (101) composé d'un élément d'affichage à cristaux liquides de type transparent sur lequel une pluralité de pixels (208) est disposée, un deuxième panneau (102) sur lequel une pluralité de pixels (208) est disposée, le premier et le deuxième panneau (101, 102) étant optiquement empilés, et une couche de lentille de diffusion optique (1) disposée entre le premier et le deuxième panneau (101, 102) afin de diffuser la lumière émise du deuxième panneau (102) vers le premier (101). Ainsi, le moirage produit par au moins deux éléments d'affichage optiquement superposés est supprimé de telle manière que la détérioration de l'affichage peut être évitée.
PCT/JP2006/322456 2006-03-22 2006-11-10 Dispositif d'affichage de type composite et récepteur de télévision WO2007108162A1 (fr)

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JP2018063403A (ja) * 2016-10-14 2018-04-19 株式会社半導体エネルギー研究所 表示パネル、表示装置、入出力装置、情報処理装置
JP2018533080A (ja) * 2015-10-02 2018-11-08 ピュア・デプス・リミテッド 複数のディスプレイを備える表示システムにおいてモアレ干渉を低減するためにサブピクセル圧縮を実施するための方法およびシステム
JP2018537728A (ja) * 2015-10-02 2018-12-20 ピュア・デプス・リミテッド 複数のディスプレイを備える表示システムにおいてモアレ干渉を低減するための屈折ビームマッパを使用した方法およびシステム
JP2019510996A (ja) * 2016-01-20 2019-04-18 アプティブ・テクノロジーズ・リミテッド 複数のディスプレイを含むディスプレイシステムにおいてモアレ干渉を低減するために矩形要素プロファイルを有する屈折ビームマッパーを用いる方法及びシステム
JP2019095775A (ja) * 2017-11-21 2019-06-20 パナソニック液晶ディスプレイ株式会社 液晶表示装置
CN111183391A (zh) * 2017-05-17 2020-05-19 纯深度股份有限公司 用于在包括多个显示器的显示系统中减少菲涅耳去偏振以改善图像对比度的方法和系统
WO2020116050A1 (fr) * 2018-12-05 2020-06-11 株式会社ジャパンディスプレイ Dispositif optique
US10684491B2 (en) 2015-10-02 2020-06-16 Pure Depth Limited Method and system using refractive beam mapper having square element profiles to reduce moire interference in a display system including multiple displays
CN111766737A (zh) * 2020-07-30 2020-10-13 京东方科技集团股份有限公司 一种显示模组及显示装置
WO2021006008A1 (fr) * 2019-07-11 2021-01-14 株式会社ジャパンディスプレイ Dispositif d'affichage à cristaux liquides
CN113109962A (zh) * 2021-04-19 2021-07-13 业成科技（成都）有限公司 一种显示模组及其制备方法、电子设备

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JP2018533080A (ja) * 2015-10-02 2018-11-08 ピュア・デプス・リミテッド 複数のディスプレイを備える表示システムにおいてモアレ干渉を低減するためにサブピクセル圧縮を実施するための方法およびシステム
JP2018537728A (ja) * 2015-10-02 2018-12-20 ピュア・デプス・リミテッド 複数のディスプレイを備える表示システムにおいてモアレ干渉を低減するための屈折ビームマッパを使用した方法およびシステム
US10684491B2 (en) 2015-10-02 2020-06-16 Pure Depth Limited Method and system using refractive beam mapper having square element profiles to reduce moire interference in a display system including multiple displays
JP2019510996A (ja) * 2016-01-20 2019-04-18 アプティブ・テクノロジーズ・リミテッド 複数のディスプレイを含むディスプレイシステムにおいてモアレ干渉を低減するために矩形要素プロファイルを有する屈折ビームマッパーを用いる方法及びシステム
JP2018063403A (ja) * 2016-10-14 2018-04-19 株式会社半導体エネルギー研究所 表示パネル、表示装置、入出力装置、情報処理装置
CN111183391A (zh) * 2017-05-17 2020-05-19 纯深度股份有限公司 用于在包括多个显示器的显示系统中减少菲涅耳去偏振以改善图像对比度的方法和系统
JP2019095775A (ja) * 2017-11-21 2019-06-20 パナソニック液晶ディスプレイ株式会社 液晶表示装置
WO2020116050A1 (fr) * 2018-12-05 2020-06-11 株式会社ジャパンディスプレイ Dispositif optique
WO2021006008A1 (fr) * 2019-07-11 2021-01-14 株式会社ジャパンディスプレイ Dispositif d'affichage à cristaux liquides
CN111766737A (zh) * 2020-07-30 2020-10-13 京东方科技集团股份有限公司 一种显示模组及显示装置
CN111766737B (zh) * 2020-07-30 2023-11-03 京东方科技集团股份有限公司 一种显示模组及显示装置
CN113109962A (zh) * 2021-04-19 2021-07-13 业成科技（成都）有限公司 一种显示模组及其制备方法、电子设备

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