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WO2018151513A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2018151513A1
WO2018151513A1 PCT/KR2018/001909 KR2018001909W WO2018151513A1 WO 2018151513 A1 WO2018151513 A1 WO 2018151513A1 KR 2018001909 W KR2018001909 W KR 2018001909W WO 2018151513 A1 WO2018151513 A1 WO 2018151513A1
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WO
WIPO (PCT)
Prior art keywords
light
electrode
substrate
contact
control
Prior art date
Application number
PCT/KR2018/001909
Other languages
English (en)
Korean (ko)
Inventor
홍문표
김상일
윤호원
장윤성
Original Assignee
고려대학교 세종산학협력단
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
Priority claimed from KR1020180016059A external-priority patent/KR101981001B1/ko
Application filed by 고려대학교 세종산학협력단 filed Critical 고려대학교 세종산학협력단
Publication of WO2018151513A1 publication Critical patent/WO2018151513A1/fr
Priority to US16/535,812 priority Critical patent/US11073721B2/en

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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B26/00—Optical devices or arrangements for the control of light using movable or deformable optical elements
    • G02B26/02—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light
    • G02B26/023—Optical devices or arrangements for the control of light using movable or deformable optical elements for controlling the intensity of light comprising movable attenuating elements, e.g. neutral density filters
    • 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 
    • G02F1/165—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 translational movement of particles in a fluid under the influence of an applied field
    • G02F1/166—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect
    • G02F1/167—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 translational movement of particles in a fluid under the influence of an applied field characterised by the electro-optical or magneto-optical effect by electrophoresis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B82—NANOTECHNOLOGY
    • B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
    • B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals

Definitions

  • the present invention relates to a display device, and more particularly, to a display device including a quantum dot film.
  • an electric field driving display device In order to implement an electronic paper display, an electric field driving display device has been studied.
  • the position of the conductive microparticles is controlled by using the electric field generated by the potential difference between the opposite electrodes in the plane, and the image is displayed by transmitting or blocking the light of the external or light unit according to the position of the particles. That's the way it is.
  • One technical problem to be solved by the present invention is to provide a display device with improved light efficiency.
  • Another technical problem to be solved by the present invention is to provide a display device with improved color reproducibility.
  • Another technical problem to be solved by the present invention is to provide a display device in which a separate polarizer is not required.
  • Another technical problem to be solved by the present invention is to provide a display device having a simple structure of an element.
  • a display device may include a first substrate provided with external light, a second control electrode provided on the first substrate, and spaced apart from the first control electrode and the first control electrode, wherein the first control electrode is provided.
  • An insulating film provided on the first and second control electrodes, the first contact electrode overlapping the first control electrode and at least partially overlapping the first control electrode, and spaced apart from the first contact electrode and at least the second control electrode.
  • a second overlapping contact electrode partially overlapping, a shuttering driving body which moves between the first contact electrode and the second contact electrode, and transmits or blocks light, a second substrate facing the first substrate, and the first substrate Or a quantum dot film provided on the second substrate to adjust the wavelength of light transmitted through the shuttering driver.
  • a display device includes a first substrate provided with external light, a second substrate facing the first substrate, and a second substrate opposite to the first substrate, the wavelength of the light transmitted through the shuttering driver.
  • a quantum dot film to be adjusted a second control electrode provided on the second substrate and spaced apart from the first control electrode and the first control electrode, an insulating film covering the first and second control electrodes, and formed on the insulating film,
  • a first contact electrode at least partially overlapping a first control electrode and a second contact electrode spaced apart from the first contact electrode and at least partially overlapping the second control electrode and the first contact electrode and the second contact electrode It may include a shuttering drive to move between the separation and to transmit or block light.
  • a display device in another embodiment, includes a first substrate provided with external light, a second control electrode provided on the first substrate, and spaced apart from the first control electrode and the first control electrode.
  • An insulating film provided on the first and second control electrodes, the first contact electrode overlapping the first control electrode and at least partially overlapping the first control electrode, and spaced apart from the first contact electrode and at least the second control electrode.
  • the display device may include a quantum dot film provided on a second substrate and adjusting a wavelength of light passing through the shuttering driver, and a light reflecting layer reflecting light transmitted through the quantum dot film toward the first substrate.
  • the first control electrode and the second control electrode are provided for each pixel, a first control line for electrically connecting the first control electrodes provided for each pixel, and a first provided for each pixel.
  • a second control line electrically connected to the second control electrodes and formed in a direction parallel to the first control line, wherein the first contact electrode and the second contact electrode are also provided for each pixel, and a first for each pixel.
  • a first contact line electrically connecting the contact electrodes, and a second contact line electrically connecting the second contact electrodes provided for each pixel and formed in a direction parallel to the first contact line.
  • the second control line may be formed in a direction different from the first contact line and the second contact line.
  • the first control electrode and the first contact electrode overlap each other, and the second control electrode and the second contact electrode overlap each other, but the first control electrode and the second
  • the control electrode may have a polygonal shape in which vertices face each other, and the first contact electrode and the second contact electrode may also have a polygonal shape in which vertices face each other.
  • the semiconductor device may further include: a partition wall partitioning individual pixels, and the partition wall may cover at least a portion of the first contact electrode included in one pixel and the second contact electrode neighboring the one pixel. have.
  • the quantum dot film is provided with a light absorbing layer having a light output opening to emit light corresponding to the individual pixels
  • the size of the shuttering drive body is larger than the size of the light output opening, It may be smaller than the separation distance between the first contact electrode and the second contact.
  • the first and second control electrodes may be formed of a layer separate from the layer, and may further include a light recycling electrode for reflecting light provided from the outside.
  • the light recycling electrode may further include a reflective sheet for re-reflecting the light reflected by the.
  • the light source may further include a light recycling sheet for reflecting light emitted from the light source toward the light source.
  • it may further include a reflection sheet for re-reflecting the light reflected in the direction of the light source.
  • a light absorbing layer having a light exit opening is formed on the quantum dot film to emit light corresponding to an individual pixel, and the light recycling sheet has a light transmitting opening corresponding to the light exit opening.
  • the light recycling sheet has a light transmitting opening corresponding to the light exit opening.
  • the light absorbing layer may further include a light absorbing layer having a light emission opening formed on one side of the quantum dot film to emit light corresponding to individual pixels, and the first control electrode and the first contact electrode may emit the light.
  • the first control electrode Non-overlapping with the opening, the second control electrode and the second contact electrode overlap with the light output opening, the first control electrode has a property of reflecting light and the second control electrode can transmit light have.
  • it may further include a reflective sheet for re-reflecting the light reflected by the first control electrode.
  • the light selective transmission layer to block the light It may further include.
  • a light recycling layer or a light recycling electrode for reflecting light source provided on one side of the first substrate and light emitted from the light source provided on the second substrate in the direction of the light source may further include.
  • the light absorbing layer may further include a light absorbing layer for controlling the emission opening between the first and second control electrodes and the first substrate.
  • a display device including a first substrate provided with external light, a shuttering drive that transmits or blocks light through a predetermined interval, and provides driving force to the shuttering drive.
  • the display device may include a quantum dot film provided on an electrode, a second substrate facing the first substrate, and the first or second substrate and adjusting a wavelength of light transmitted through the shuttering driver.
  • a display device may include a first substrate provided with external light, a second control electrode provided on the first substrate, and spaced apart from the first control electrode and the first control electrode, wherein the first control electrode is provided.
  • An insulating film provided on the first and second control electrodes, the first contact electrode overlapping the first control electrode and at least partially overlapping the first control electrode, and spaced apart from the first contact electrode and at least the second control electrode.
  • a second overlapping contact electrode partially overlapping, a shuttering driving body which moves between the first contact electrode and the second contact electrode, and transmits or blocks light, a second substrate facing the first substrate, and the first substrate Or a quantum dot film provided on the second substrate and adjusting the wavelength of light transmitted through the shuttering driver.
  • the light transmittance in each pixel is controlled through the crossing polarizing plates and the liquid crystal material, and thus there is a problem of low efficiency due to light absorption of the polarizing plates.
  • the amount of light transmission in each pixel is controlled by the movement of the shuttering driving body, the light absorption problem in the polarizing plate can be solved, thereby improving the light efficiency.
  • there was a difficulty in the process to match the polarization axis of the polarizing plate since the polarizing plate is not required, convenience in the process can be achieved.
  • the quantum dot film since the quantum dot film is provided, the quantum dot film widens the emission surface of the light, thereby providing an image closer to the natural color to the viewer.
  • 1 to 4 are diagrams for describing the structure of a display device according to a first embodiment of the present invention.
  • 5 to 11 are views for explaining a method of manufacturing a display device according to a first embodiment of the present invention.
  • FIG. 12 is a view for explaining a first modified example of the first embodiment of the present invention.
  • FIG. 13 is a view for explaining a second modified example of the first embodiment of the present invention.
  • FIG. 14 is a view for explaining a third modified example of the first embodiment of the present invention.
  • 15 is a view for explaining a fourth modified example of the first embodiment of the present invention.
  • 16 is a view for explaining a fifth modified example of the first embodiment of the present invention.
  • 17 is a diagram for describing a structure of a display device according to a second embodiment of the present invention.
  • 18 to 25 illustrate a method of manufacturing a display device according to a second exemplary embodiment of the present invention.
  • FIG. 26 is a view for explaining a first modified example of the second embodiment of the present invention.
  • 27 is a view for explaining a second modification to the second embodiment of the present invention.
  • 29 is a view for explaining a fourth modified example of the second embodiment of the present invention.
  • FIG. 30 is a view for explaining the structure of a display device according to a third embodiment of the present invention.
  • first, second, and third are used to describe various components, but these components should not be limited by these terms. These terms are only used to distinguish one component from another.
  • the term 'and / or' is used herein to include at least one of the components listed before and after.
  • connection is used herein to mean both indirectly connecting a plurality of components, and directly connecting.
  • 1 to 4 are diagrams for describing the structure of the display device 100 according to the first embodiment of the present invention.
  • the display device includes a second control electrode spaced apart from the first substrate, the first control electrode 120a and the first control electrode 120a. 120b), an insulating film 115, at least one of the first contact electrode 130a and the second contact electrode 130b, the shuttering driver 160, the second substrate 170 and the quantum dot film 175 Can be done.
  • the light recycling sheet 192 may further include.
  • the first substrate may provide a support surface of the display device 100 according to the first embodiment of the present invention.
  • the first substrate may be made of at least one of glass and a polymer film.
  • External light may be provided at a lower end of the first substrate.
  • the external light may be, for example, natural light of the surroundings without a separate light source or light provided by a separate light source.
  • a separate light source 190 for providing the external light.
  • the first substrate may be provided between the light source 190 and a layer formed by the first and control electrodes 120 (120a and 120b).
  • the first substrate may be provided between a layer formed by the first and control electrodes 120 (120a and 120b) and a light recycling sheet 192 to be described later.
  • the first substrate may be provided between the light recycling sheet 192 and the light source 190 to be described later.
  • the first substrate may be provided integrally with the light source 190 on an upper surface of the light source 190.
  • the first substrate is not illustrated in FIG. 1, it will be assumed below that the first substrate is provided between the light recycling sheet 192 and the light source 190 for convenience of description.
  • An optical recycling sheet 192 may be provided on the first substrate.
  • the light recycling sheet 192 may perform a function of reflecting light provided from the light source 190 toward the light source 190.
  • the light recycling sheet 192 may be made of a metal having a reflectivity. Since the light recycling sheet 192 reflects the light emitted from the light source 190, the degree of integration of the light provided to the second substrate 170 to be described later may be improved. In another aspect, since the light emitted from the light source 190 is provided to the second substrate 170 may be minimized, the light efficiency may be improved.
  • Control electrodes 120 including the first control electrode 120a and the second control electrode 120b may be formed on the optical recycling sheet 192.
  • the first control electrode 120a and the second control electrode 120b may perform a function of controlling the position of the shuttering driver 160 to be described later.
  • the first control electrode 120a and the second control electrode 120b may be made of a conductive material.
  • the first control electrode 120a and the second control electrode 120b may be transparent electrodes, for example, indium tin oxide (ITO) or indium (IZO) so that light passing through the light recycling sheet 192 may be transmitted.
  • Zinc oxide (AZO), aluminum zinc oxide (AZO), indium zinc tin oxide (IZTO) may be made of at least one material.
  • the first control electrode 120a and the second control electrode 120b may be provided for each pixel, and may be provided at predetermined intervals.
  • the separation distance between the first control electrode 120a and the second control electrode 120b may provide a movement path to the shuttering driver 160 to be described later.
  • the first control electrode 120a and the second control electrode 120b may have vertices facing each other to effectively provide a driving force, that is, an electric field, to the shuttering driving body 160. It may have a polygonal shape. For example, the first control electrode 120a and the second control electrode 120b may have a triangular shape.
  • the first control line 125a for electrically connecting the first control electrodes provided for each pixel and the second control line 125b for electrically connecting the second control electrodes provided for each pixel are further included. It may include. In this case, the first control line 125a and the second control line 125b may be spaced apart from each other to extend in a parallel manner.
  • first and second control electrodes 120a and 120b, the first control line and the second control lines 125a and 125b may be formed at the same plane level. In another aspect, the first and second control electrodes 120a and 120b, the first control line and the second control lines 125a and 125b may be formed together.
  • the insulating film 115 may be formed on the first and second control electrodes 120.
  • the insulating layer 130 includes silicon oxide (SixOy), aluminum oxide (AlxOy), hafnium oxide (HfxOy), zirconium oxide (ZrxOy), yttrium oxide (YxOy), lanthanum oxide (LaxOy), tantalum oxide (TaxOy), and praseodymium It is made of at least one of oxide (PrxOy), titanium oxide (TixOy), aluminum silicon oxide (AlxSiyOz), zirconium silicon oxide (ZrSixOy) and hafnium silicon oxide (HfSixOy), and may have a single layer or a multilayer structure.
  • Contact electrodes 130 including a first contact electrode 130a and a second contact electrode 130b may be formed on the insulating layer 115.
  • the first contact electrode 130a and the second contact electrode 130b may perform a function of controlling the position of the shuttering driver 160 in cooperation with the control electrodes 120 described above.
  • the first contact electrode 130a and the second contact electrode 130b may be made of a conductive material.
  • the first control electrode 120a and the second control electrode 120b may be transparent electrodes, for example, indium tin oxide (ITO) or indium (IZO) so that light transmitted through the light recycling sheet 192 may pass therethrough.
  • Zinc oxide), AZO (aluminum zinc oxide), IZTO (indium zinc tin oxide) may be made of at least one material.
  • the first contact electrode 130a and the second contact electrode 130b may also be provided for each pixel, and may be provided at predetermined intervals.
  • the separation distance between the first contact electrode 130a and the second contact electrode 130b may provide a movement path to the shuttering driver 160 to be described later.
  • the first contact electrode 130a and the second contact electrode 130b may have vertices facing each other in order to effectively provide a driving force, that is, an electric field, to the shuttering driver 160. It may have a polygonal shape. For example, the first contact electrode 130a and the second contact electrode 130b may have a triangular shape.
  • the first contact electrode 130a may overlap with the first control electrode 120a.
  • the first contact electrode 130a may have the same shape as the first control electrode 120a and may overlap the whole.
  • at least a portion of the second contact electrode 130b may overlap with the second control electrode 120b.
  • the second contact electrode 130b may have the same shape as that of the second control electrode 120b and may overlap the whole. Since the contact electrodes 130 and the control electrodes 120 overlap with each other in the same shape, the electric field applied to the shuttering driver 160 may be maximized.
  • the first contact line 135a electrically connecting the first contact electrodes 130a provided for each pixel and the second contact electrically connecting the second control electrodes 130b provided for each pixel. It may further comprise a line 135b. In this case, the first contact line 135a and the second contact line 135b may be spaced apart from each other to extend in a parallel manner.
  • first and second contact electrodes 130a and 130b, the first contact line and the second contact line 135a and 135b may be formed at the same plane level. In another aspect, the first and second contact electrodes 130a and 130b, the first contact line and the second contact line 135a and 135b may be formed together.
  • first and second control lines 125a and 125b may be provided in different directions, for example, 90 degrees from the first and second contact lines 135a and 135b.
  • the partition wall 150 may be provided to be in direct contact with the first and second contact electrodes 130a and 130b to partition individual pixels. More specifically, the barrier wall 150 may cover at least a portion of the first contact electrode included in one pixel and at least a portion of the second contact electrode adjacent to the one pixel. That is, the partition wall 150 may include at least a portion of the second contact electrode of the first pixel PXL1, at least a portion of the first contact electrode of the second pixel PXL2, and at least a portion of the second contact electrode of the second pixel PXL2. A portion and at least a portion of the one contact electrode of the third pixel PXL3 may be covered.
  • the partition wall 150 may provide a short wall such that the partition wall 150 does not move out of the movement path of the shuttle driving body 160.
  • the shuttering driver 160 is provided to be in direct contact with the contact electrodes 130, and moves between the first contact electrode 130a and the second contact electrode 130b and transmits or transmits light. Can block the function. That is, the shuttering driver 160 may perform a function of adjusting the amount of transmission for each pixel in providing the light emitted from the light source 190 to the viewing surface. To this end, the shuttering driver 160 may be made of a black non-transparent material.
  • the shuttering driver 160 may have a structure in which a conductive film is coated on a polymer that is an insulator base. As a result, since the shuttering driver 160 exhibits no permanent charge, the shuttering driver 160 may move by the control electrodes 120 and the contact electrodes 130. That is, the shuttering driver 160 does not have a permanent charge, and may be positively or negatively charged according to the applied voltage, and may have a spherical diameter of several micrometers to several hundred micrometers to facilitate movement.
  • the conductive film of the shuttering driver 160 may be formed of a material having excellent electrical properties, for example, a metal such as gold or aluminum, or a conductive material such as a transparent conductive oxide (TCO) or a conductive polymer.
  • the driving mechanism of the shuttering driver 160 will be described later.
  • the second substrate 170 may also provide a support surface of the display device 100 according to the first embodiment of the present invention.
  • the second substrate 170 may also be made of at least one of glass and a polymer film.
  • the quantum dot film 175 may be provided on one surface of the second substrate 170, for example, on a bottom surface thereof.
  • the quantum dot film 175 may convert the light provided to the quantum dot film 175 into a color corresponding to each pixel.
  • the quantum dot film 175 may adjust the wavelength of light.
  • the quantum dot film 175 provided in the first pixel PXL1 of FIG. 1 is made of quantum dots adjusting the wavelength of light in red color
  • the quantum dot film 175 provided in the second pixel PXL2 is green.
  • a quantum dot for adjusting the light wavelength may be formed, and the quantum dot film 175 provided in the third pixel PXL3 may be made of a quantum dot for adjusting the light wavelength in blue. If the light source 190 emits blue, the quantum dots for adjusting the light wavelength to blue may be omitted. In addition, when the light source 190 emits white, a color filter that emits white may be provided.
  • the light absorbing layer 180 may be further provided on the bottom surface of the quantum dot film 175.
  • the light emission opening 182 may be formed in the light absorbing layer 180 to emit light corresponding to the individual pixels.
  • the size of the shuttering driving body 160 may be larger than the size of the light output opening 182, and smaller than the separation distance between the first contact electrode and the second contact.
  • the structure of the display device 100 according to the first exemplary embodiment of the present invention has been described above with reference to FIGS. 1 to 4.
  • a method of operating the display device 100 according to the first exemplary embodiment of the present invention will be described with reference to FIG. 1.
  • the shuttering driver 160 may move according to the voltage polarity of the control electrodes 120 and the contact electrodes 130. For example, when the shuttering driver 160 is in contact with the first contact electrode 120a, the shuttering driver 160 is in accordance with the polarity of the voltage applied to the control electrodes 120 and 130. It may be continuously in contact with the first contact electrode 130a or alternatively may move to the second contact electrode 130b.
  • a positive voltage is applied to the first contact electrode 130a and the first control electrode 120a
  • a negative voltage is applied to the second contact electrode 130b and the second control electrode 120b.
  • the shuttering driver 160 moves to the second contact electrode 130b having the opposite polarity as it is charged with the positive polarity by the first contact electrode 130a being in contact.
  • the shuttering driving member 160 moves to the second contact electrode 130b and contacts the second contact electrode 130b
  • the shuttering driving member 160 is charged with a negative polarity to move to the first contact electrode 130a again. do.
  • the shuttering driving member 160 is repeatedly moved at high speed between the first contact electrode 130a and the second contact electrode 130b. According to the speed of the shuttering driving unit 160, the light transmittance during the average time is changed to enable gray scale expression.
  • the shuttering driver 160 moves to the first contact electrode 130a.
  • the position is fixed by the first control electrode 120a charged with +) and close in distance.
  • the light emitted from the light source 190 passes through the shuttering driver 160 to be incident on the quantum dot film 175. Accordingly, light of the color required by the quantum dot film 175 may be provided to the viewing surface (see PXL1 and PXL2 of FIG. 1).
  • the shuttering is performed.
  • the driving body 160 moves to the second contact electrode 130b, it is charged with a negative polarity and is fixed to the position by the second control electrode 120b close to the distance to the quantum dot film 175. Light may be blocked.
  • the pixel is shown in black (see PXL3 in FIG. 1).
  • the light recycling sheet 192 reflects light so that the light emitted from the light source 190 may be provided to the light emission opening 182 without loss. Accordingly, since the amount of light passing through the shuttering driver 160 is maximized, the light efficiency may be improved.
  • the quantum dot film 175 performs a function of adjusting the color, thereby widening the emission angle of the strong straight light emitted from the light source 190, thereby providing natural color.
  • the driving mechanism of the display device 100 according to the first embodiment of the present invention has been described above.
  • a method of manufacturing a display device according to a first exemplary embodiment of the present invention will be described with reference to FIGS. 5 through 11.
  • 5 to 11 are views for explaining a method of manufacturing a display device according to a first embodiment of the present invention.
  • the method of manufacturing the display device according to the first exemplary embodiment of the present invention is the same as that of the display device according to the first exemplary embodiment described above with reference to FIGS. 1 to 4. The description will be omitted.
  • 5 to 11 the diagram (a) shown at the top of each figure shows a cross section, and the diagram (b) shown at the bottom of each figure shows a plane.
  • a light source 190 may be provided.
  • a first substrate may be provided on the light source 190.
  • the first substrate may be provided on the light recycling sheet.
  • an optical recycling sheet 192 may be provided. As illustrated in FIG. 6B, the light recycling sheet 192 may be provided with a light transmitting opening 194 through which light emitted from the light source 190 transmits. The light reflected by the light recycling sheet 192 may be provided to the shuttering driver 160 with a high light condensation through the light transmitting opening 194. The light transmission opening 194 may at least partially overlap the light emission opening 182 and at least partially overlap the second control electrode 120b and the second contact electrode 130b.
  • a control electrode layer may be provided on the optical recycling sheet 192.
  • the control electrode layer may include first and second control electrodes 120a and 120b and first and second control lines 125a and 125b.
  • the control electrode layer may be deposited by, for example, sputtering. Of course, the control electrode layer may be formed by a solution process.
  • first and second control electrodes 120a and 120b may be spaced apart from each other, and have vertices having vertices facing each other.
  • first control line 125a may electrically connect neighboring first control electrodes
  • second control line 125b may electrically connect neighboring second control electrodes.
  • the second control electrode 120b may at least partially overlap the light transmitting opening 194.
  • the collected light may be provided to the second control electrode 120b.
  • the collected light may pass through the second control electrode 120b formed of the transparent electrode.
  • an insulating film 115 may be formed on the control electrode layer.
  • a contact electrode layer may be formed on the insulating layer 115.
  • the contact electrode layer may include first and second contact electrodes 130a and 130b and first and second contact lines 135a and 135b.
  • the contact electrode layer may be deposited by, for example, sputtering. Of course, the contact electrode layer may be formed by a solution process.
  • first and second contact electrodes 130a and 130b may be spaced apart from each other, and the vertices may have a triangular shape facing each other.
  • first contact line 135a may electrically connect neighboring first contact electrodes
  • second contact line 135b may electrically connect neighboring second contact electrodes.
  • first contact electrode 130a may overlap the first control electrode 120a
  • second contact electrode 130b may overlap the second control electrode 130b
  • first contact line and the second contact line 135a and 135b may extend in different directions from the first control line and the second control line 125a and 125b.
  • the second contact electrode 130b may at least partially overlap the light transmitting opening 194.
  • the collected light may be provided to the second contact electrode 130b.
  • the collected light may pass through the second contact electrode 130b formed of a transparent electrode.
  • the partition wall 150 and the shuttering driver 160 may be formed.
  • the partition wall 150 may be formed of an organic layer and may perform a function of limiting a movement path of the shuttering driver 160.
  • the partition wall 150 may include the shuttering driver between the first control electrode 120a and the first contact electrode 130a and the second control electrode 120b and the second contact electrode 130b. 160 may provide a movement path.
  • the shuttering driver 160 may be provided on a movement path provided by the partition wall 150.
  • a second substrate 170 provided with a light absorbing layer 180 and a quantum dot film 175 may be provided.
  • the quantum dot film 175 may have an RGBW pixel structure.
  • the display device 100 according to the first embodiment of the present invention can be provided.
  • the light collected by the light recycling sheet 192 may be provided, and the amount of light transmitted for each pixel may be controlled according to the average moving speed and the position of the shuttering driver 160. have.
  • the light transmitted through the shuttering driver 160 may be adjusted to a color wavelength required by the quantum dot film 175 and provided to the viewing surface.
  • the shuttering driver 160 performs a function of an optical shutter, thereby providing a desired image without a separate polarization layer. can do. Accordingly, in the display device 100 according to the first exemplary embodiment, a precise process for forming a polarizing layer may be omitted, and light loss due to the polarizing layer may be reduced.
  • the light recycling sheet 192 may increase the amount of light passing through the second control electrode 120b, the light efficiency may be improved.
  • the light passing through the quantum dot film 175 is of course the color wavelength is controlled, it has a wide light exit angle, it can provide an excellent color.
  • the quantum dot film 175 is formed on the second substrate 170.
  • the display device 100 may be formed on the first substrate. have.
  • the quantum dot film 175 may be located under the control electrode layer.
  • the display apparatus 100 according to the first exemplary embodiment of the present invention has been described above with reference to FIGS. 1 through 11.
  • modified examples of the first exemplary embodiment of the present invention will be described with reference to FIGS. 12 to 16.
  • descriptions of overlapping components will be omitted and detailed configurations will be described in detail.
  • FIG. 12 is a view for explaining a first modified example of the first embodiment of the present invention.
  • the display device 100a according to the first modified example may not include the light source 190 and the light recycling sheet 192, unlike the display device 100 according to the first embodiment. That is, in the display device 100a according to the first modified example, the control electrode layer, the insulating film, the contact electrode layer, and the shuttering driver may be formed on the first substrate 110.
  • the first substrate 110 may be made of a light transmissive material.
  • the display device 100a according to the first modified example may display an image on the side of the second substrate 170 by utilizing ambient light passing through the first substrate 110.
  • FIG. 13 is a view for explaining a second modified example of the first embodiment of the present invention.
  • the display device 100b according to the second modified example performs the same function as the optical recycling sheet 192 of the display device 100 according to the first embodiment, but may include another configuration. Can be.
  • the display device 100b according to the second modified example may include an optical recycling electrode 195 and a planarization layer 196 on the optical recycling electrode 195.
  • the optical recycling electrode 195 may be formed on the first substrate 110.
  • the light recycling electrode 195 may be made of a metal material that reflects light.
  • the light recycling electrode 195 may be spaced apart from each other in the width direction to allow light to pass through the second control electrode 120b.
  • the planarization layer 196 may cover the optical recycling electrode 195 and may be planarized.
  • a control electrode layer, an insulating film, a contact electrode layer, and a shuttering structure may be provided on the planarization film 196.
  • FIG. 14 is a view for explaining a third modified example of the first embodiment of the present invention.
  • the display device 100c according to the third modified example functions as the first control electrode 120a and the first contact electrode to function as an optical recycling sheet 192 of the display device 100 according to the first embodiment. 130a may perform.
  • the first control electrode 120a of the display device 100 according to the first embodiment is a transparent electrode
  • the first control electrode of the display device 100c according to the third modified example ( 120a) may be made of a reflective electrode.
  • the first control electrode 120a may include at least one material of Cu, Au, Ni, Ti, and Cr.
  • the first contact electrode 130a in the display device 100c according to the third modified example may also be formed as a reflective electrode.
  • the second control electrode 120b and the second contact electrode 130b overlapping at least a portion of the light exit opening 182 and the light transmitting opening 194 may be formed of a transparent electrode.
  • the display device 100c according to the third modified example can provide an optical recycling effect even without the optical recycling sheet 192, thereby providing a simpler structure.
  • 15 is a view for explaining a fourth modified example of the first embodiment of the present invention.
  • the display device 100d according to the fourth modified example may further include a reflective sheet 198 in the display device 100b according to the second modified example.
  • the reflective sheet 198 may be provided between the first substrate 110 and the light source 190.
  • the reflective sheet 198 may reflect light reflected by the light recycling electrode 195 from the upper surface of the reflective sheet 198 and provide the light toward the second control electrode 120b. That is, the reflective sheet 198 may improve light efficiency by reducing the light reflection path.
  • 16 is a view for explaining a fifth modified example of the first embodiment of the present invention.
  • the display device 100e according to the fifth modified example may further include a light selective transmission layer 199 in the display device 100a according to the first modified example.
  • the light selective transmissive layer 199 may transmit a light greater than or equal to a critical amount of light and block light less than or equal to a critical amount of light.
  • the shuttering driver 160 is positioned at the position where light is blocked, when there is light LL incident to the quantum dot film 175 by bypassing the shuttering driver 160 by repetitive reflection, light leakage It may cause the phenomenon, to block it. That is, the light selective transmission layer 199 prevents the light leakage phenomenon because the light LL unintentionally leaks is generally weak.
  • the reflective sheet of the fourth modified example can be applied not only to the second modified example but also to the first embodiment, the first modified example, the third modified example, and the fifth modified example.
  • FIGS. 17 to 29. 1 to 16 the same components as the components described in the description of the same reference numerals are denoted by the same reference numerals. Therefore, descriptions of overlapping components will be omitted and detailed configurations will be described in detail.
  • 17 is a view for explaining the structure of the display device 200 according to the second embodiment of the present invention.
  • control electrode layer, the insulating film, the contact electrode layer, the quantum dot film, and the light absorbing layer are formed on separate substrates, but in the case of the display device 200 according to the second embodiment, The control electrode layer, the insulating film, the contact electrode layer, the quantum dot film, the light absorbing layer is different in that the same substrate, for example, the second substrate 170 can be formed. That is, the display device 200 according to the second embodiment may provide a color filter on array (COA) structure.
  • COA color filter on array
  • 18 to 25 illustrate a method of manufacturing a display device according to a second exemplary embodiment of the present invention.
  • a second substrate 170 may be provided.
  • a quantum dot film 175 may be provided on the second substrate 170. As illustrated in FIG. 19, the quantum dot film 175 may have an RGBW pixel structure.
  • a light absorbing layer 180 having a light emission opening 182 formed on the quantum dot film 175 may be provided.
  • a control electrode layer including a control electrode 120, first and second control lines 125a and 125b may be formed on the light absorbing layer 180. As described above, the first and second control electrodes 120a and 120b may be spaced apart from each other, and have vertices having vertices facing each other.
  • An insulating film 115 may be formed on the control electrode layer.
  • a contact electrode layer including a contact electrode 130 and first and second contact lines 135a and 135b may be formed on the insulating layer 115.
  • the first and second contact electrodes 130a and 130b may be spaced apart from each other, and the vertices may have a triangular shape facing each other.
  • a partition wall 150 defining a movement path of the shuttering driver 160 may be formed on the contact electrode layer.
  • the shuttering driver 160 may be provided in the movement path provided by the barrier wall 150, and the light source 190 and the light recycling sheet 192 may be provided.
  • the display device 200 according to the second embodiment of the present invention may be provided.
  • the light collected by the light recycling sheet 192 may be provided, and the amount of light transmitted for each pixel may be controlled according to the average moving speed and the position of the shuttering driver 160. have.
  • the light transmitted through the shuttering driver 160 may be adjusted to a color wavelength required by the quantum dot film 175 and provided to the viewing surface.
  • the light recycling sheet 192 is provided on the first substrate.
  • the light recycling sheet 192 may be provided between the second substrate, for example, the light absorbing layer 180 and the control electrode layer.
  • FIG. 26 is a view for explaining a first modified example of the second embodiment of the present invention.
  • the display device 200a according to the first modification of the second embodiment of the present invention corresponds to the display device 100a according to the first modification of the first embodiment of the present invention.
  • the display device 200a according to the first modified example of the second exemplary embodiment may not include the light source 190 and the light recycling sheet 192. Therefore, the control electrode layer, the insulating film, the contact electrode layer, and the shuttering driver may be formed on the first substrate 110. Accordingly, the display device 200a according to the first modified example of the second exemplary embodiment may display an image on the second substrate 170 by utilizing ambient light passing through the first substrate 110.
  • 27 is a view for explaining a second modification to the second embodiment of the present invention.
  • the display device 200b according to the second modification of the second embodiment of the present invention corresponds to the display device 100b according to the second modification of the first embodiment of the present invention.
  • the display device 200b according to the second modified example of the second embodiment may perform the same function as the optical recycling sheet 192 but may include another configuration.
  • the display device 200b according to the second modified example of the second embodiment may include an optical recycling electrode 195 and a planarization layer 196 on the optical recycling electrode 195.
  • the optical recycling electrode 195 may be formed on the second substrate 170.
  • the light recycling electrode 195 may be made of a metal material that reflects light.
  • the light recycling electrode 195 may be spaced apart from each other to allow light to pass through the second control electrode 120b.
  • the planarization layer 196 may cover the optical recycling electrode 195 and may be planarized.
  • a control electrode layer, an insulating film, a contact electrode layer, and a shuttering structure may be provided on the planarization film 196.
  • the display device 200c according to the third modification of the second embodiment of the present invention corresponds to the display device 100d according to the fourth modification of the first embodiment of the present invention.
  • the display device 100c according to the third modified example of the second exemplary embodiment may further include a reflective sheet 198 in the second modified example of the second exemplary embodiment.
  • the reflective sheet 198 may be provided between the first substrate 110 and the light source 190.
  • the reflective sheet 198 may reflect light reflected by the light recycling electrode 195 from the upper surface of the reflective sheet 198 and provide the light toward the second control electrode 120b. That is, the reflective sheet 198 may improve light efficiency by reducing the light reflection path.
  • 29 is a view for explaining a fourth modified example of the second embodiment of the present invention.
  • the display device 200d according to the fourth modification of the second embodiment of the present invention corresponds to the display device 100e according to the fifth modification of the first embodiment of the present invention.
  • the fourth modified example of the second exemplary embodiment may further include a light selective transmission layer 199 in the display device 200a according to the first modified example of the second exemplary embodiment. Accordingly, the display device 200d according to the fourth modified example of the second exemplary embodiment may minimize light leakage.
  • the second exemplary embodiment of the present invention has been described above with reference to FIGS. 26 to 29. In the description of the modifications, it was separately described for convenience of description, but the second embodiment and the modifications thereof may be implemented in combination with each other.
  • the reflective sheet of the third modified example can be applied not only to the second modified example, but also to the second modified example, the first modified example and the fourth modified example.
  • the function of the optical recycling sheet 192 is controlled by the first control electrode 120a and the first contact electrode 130a.
  • the first contact electrode 130a may be a reflective electrode.
  • the first control electrode 120a may also be a reflective electrode. Accordingly, since the light recycling effect can be provided without the light recycling sheet 192, a simpler structure can be provided.
  • FIGS. 1 to 29 have described a transmissive type in which an image is provided through a second substrate, the technical idea of the present invention may be applied to a reflective type.
  • a display device according to a third exemplary embodiment of the present invention will be described with reference to FIG. 30.
  • FIG. 30 is a view for explaining the structure of a display device according to a third embodiment of the present invention.
  • the display device 300 includes a light reflection layer 172 in the structure of the display device 100a according to the first modified example of the first embodiment of the present invention. Furthermore, the light absorbing layer 184 may be further included.
  • the light reflection layer 172 may reflect the light transmitted through the quantum dot film 175 toward the first substrate 110.
  • the light reflection layer 172 may be made of a material having a high reflectivity.
  • the light reflection layer 172 may be provided between the second substrate 170 and the quantum dot film 175.
  • the light absorbing layer 184 may be provided between the control electrode layer and the first substrate 110 to block the light so that the reflected light is emitted in the individual pixel region.
  • the external light may reach the control electrode layer, the insulating film, the contact electrode layer, and the shuttering driver through the first substrate 110.
  • the ambient light of L1 may not block any more.
  • the ambient light L2 and L3 sequentially pass through the control electrode layer, the insulating film, the contact electrode layer, and the shuttering driver through the first substrate 110, and then pass through the opening 182 of the light absorbing layer 180. It may have a desired color wavelength while passing through the film 175. Thereafter, the light may be reflected by the light reflection layer 172 and finally emitted through the first substrate 110.
  • the light can be blocked and the amount of transmitted light can be controlled according to the moving speed and the position of the shuttering driving body, a desired image can be provided without a separate polarizing layer. Accordingly, the optical absorption loss of the polarizing layer can be eliminated from an optical point of view, and the optical axis alignment process of the polarizing layer can be omitted from a fair point of view, so that the yield can be improved.
  • the light recycling sheet can maximize the amount of light provided to the shuttering driver, the brightness can be improved.
  • the light passing through the quantum dot film is of course the color wavelength is controlled, and has a wide light exit angle, it can provide an excellent color.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Nonlinear Science (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Molecular Biology (AREA)
  • Mechanical Light Control Or Optical Switches (AREA)
  • Devices For Indicating Variable Information By Combining Individual Elements (AREA)

Abstract

Un dispositif d'affichage selon un mode de réalisation de la présente invention comprend : un premier subfstrat auquel une lumière externe est appliquée; une première et une deuxième électrode de commande disposées sur le premier substrat, la deuxième électrode de commande étant espacée de la première électrode de commande; un film isolant disposé sur la première et la deuxième électrode de commande; une première et une deuxième électrode de contact formées sur le film isolant, la première électrode de contact chevauchant au moins partiellement la première électrode de commande, et la deuxième électrode de contact est espacée de la première électrode de contact et chevauche au moins partiellement la deuxième électrode de commande; un corps d'opération de coffrage se déplaçant entre la première et la deuxième électrode de contact de façon à transmettre ou à bloquer la lumière; un deuxième substrat opposé au premier substrat; et un film de points quantiques disposé sur le premier ou le second substrat et réglant la longueur d'onde de la lumière traversant le corps d'opération de coffrage.
PCT/KR2018/001909 2017-02-16 2018-02-14 Dispositif d'affichage WO2018151513A1 (fr)

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KR20170021267 2017-02-16
KR10-2017-0021267 2017-02-16
KR1020180016059A KR101981001B1 (ko) 2017-02-16 2018-02-09 표시장치
KR10-2018-0016059 2018-02-09

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Cited By (1)

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WO2020143530A1 (fr) * 2019-01-11 2020-07-16 京东方科技集团股份有限公司 Structure de sous-pixel, écran d'affichage, son procédé de fabrication, son procédé de commande et dispositif d'affichage
US11699708B2 (en) 2019-01-11 2023-07-11 Chengdu Boe Optoelectronics Technology Co., Ltd. Sub-pixel structure, display panel and control method therefor, and display device

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