WO2010058502A1 - Dispositif d'affichage à cristaux liquides et procédé pour sa fabrication - Google Patents

Dispositif d'affichage à cristaux liquides et procédé pour sa fabrication Download PDF

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Publication number
WO2010058502A1
WO2010058502A1 PCT/JP2009/004290 JP2009004290W WO2010058502A1 WO 2010058502 A1 WO2010058502 A1 WO 2010058502A1 JP 2009004290 W JP2009004290 W JP 2009004290W WO 2010058502 A1 WO2010058502 A1 WO 2010058502A1
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WO
WIPO (PCT)
Prior art keywords
liquid crystal
wall
substrate
sealing material
display device
Prior art date
Application number
PCT/JP2009/004290
Other languages
English (en)
Japanese (ja)
Inventor
川西浩之
永田尚志
近藤直人
Original Assignee
シャープ株式会社
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Application filed by シャープ株式会社 filed Critical シャープ株式会社
Priority to CN2009801449087A priority Critical patent/CN102209927A/zh
Priority to US13/127,509 priority patent/US20110222013A1/en
Publication of WO2010058502A1 publication Critical patent/WO2010058502A1/fr

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    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of 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
    • G02F1/133388—Constructional arrangements; Manufacturing methods with constructional differences between the display region and the peripheral region
    • 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
    • G02F1/1339—Gaskets; Spacers; Sealing of cells
    • G02F1/13396—Spacers having different sizes

Definitions

  • the present invention relates to a liquid crystal display device and a manufacturing method thereof.
  • the liquid crystal display device is bonded through a frame-shaped sealing material so that a pair of substrates face each other.
  • a liquid crystal layer is provided inside the sealing material, and a display area for displaying an image is defined inside the sealing material.
  • a sealing material is formed in a frame shape on one of a pair of substrates, and a predetermined amount of liquid crystal material is dropped onto a region surrounded by the sealing material on the substrate by a dispenser. Thereafter, a so-called dropping injection method is known in which a pair of substrates are bonded to each other in a vacuumed processing chamber.
  • a pair of substrates is bonded to each other in order to harden the sealing material after the pair of substrates are bonded to each other via the liquid crystal material dropped inside the uncured sealing material.
  • the liquid crystal material is spread to the uncured sealing material side.
  • the liquid crystal material has a sufficient viscosity, even if the pair of substrates are pressurized to a predetermined interval, the liquid crystal material does not spread immediately until it reaches the seal material.
  • the vicinity of the sealing material is in a vacuum state on the inside. In this way, if the sealing material is subjected to a curing treatment such as ultraviolet irradiation while the vicinity of the sealing material is in a vacuum state, the sealing material is sufficiently cured until the liquid crystal material finally reaches the sealing material.
  • the liquid crystal material comes into contact with the uncured sealing material during pressurization when the pair of substrates are bonded together or during the curing process of the sealing material.
  • uncured sealing material is mixed into the liquid crystal layer, causing a display defect such as a spot, and the display quality is liable to deteriorate, and the sealing material is changed and the sealing material is between the pair of substrates. Even after being cured, it tends to be crushed or a curing failure tends to occur in the sealing material.
  • a partition that separates the liquid crystal layer and the sealing material along the sealing material with respect to one substrate constituting the liquid crystal display device has a frame shape surrounding the entire periphery of the liquid crystal layer. It is disclosed that the contact between the sealing material and the liquid crystal material is suppressed by forming the liquid crystal material into a thin film.
  • the partition is formed in a frame shape adjacent to the display region and surrounding the entire periphery of the liquid crystal layer as in the liquid crystal display device of Patent Document 1, the amount of liquid crystal material dropped due to variations in the amount of dispenser dispensed. If the amount is less than the appropriate amount in accordance with the inner volume of the partition wall, a fine bubble-like vacuum portion tends to remain in the liquid crystal layer in the display region, and the display quality is liable to deteriorate, so there is room for improvement.
  • the present invention has been made in view of such a point, and an object of the present invention is to prevent the liquid crystal material from coming into contact with the uncured sealing material and to form a bubble in the liquid crystal layer in the display region.
  • the purpose is to prevent the vacuum part from remaining.
  • a non-display area is also provided in the inner peripheral part of the sealing material, and the sealing material is provided in the non-display area provided in the inner peripheral part of the sealing material on one substrate.
  • a plurality of wall-shaped portions are provided so as to extend along the line and to be separated from each other.
  • a liquid crystal display device is provided between a first substrate and a second substrate disposed so as to face each other, and between the first substrate and the second substrate, the first substrate. And a frame-shaped sealing material for bonding the second substrates together, and a liquid crystal layer in which a liquid crystal material is sealed inside the sealing material, and a display area for displaying an image inside the sealing material, and the display
  • a liquid crystal display device in which a non-display area is defined outside each of the areas, wherein the non-display area is provided also on an inner periphery of the seal material, and the first substrate has an inner periphery of the seal material.
  • a plurality of wall-like portions are provided in a non-display area provided in the portion so as to extend along the sealing material and to be separated from each other.
  • the sealing material is formed in a frame shape on the first substrate, and after the liquid crystal material is dropped on the area that becomes the display area inside the sealing material on the first substrate, When the substrate and the second substrate are bonded to each other, the spread of the liquid crystal material to the portion along which each wall-shaped portion of the sealing material extends is blocked by each wall-shaped portion. Contact with the material is suppressed.
  • the liquid crystal material spreads between the wall portions so as to reach the sealing material.
  • the dropping amount of the liquid crystal material is less than the appropriate amount, a bubble-like vacuum portion remains in the non-display area near the sealing material filled with the liquid crystal material after the display area.
  • the thickness of the liquid crystal layer is unlikely to fluctuate due to vibration, impact, or the like, so that the possibility that the bubble-like vacuum portion moves to the display region is relatively low. Therefore, the liquid crystal material is prevented from coming into contact with the uncured sealing material, and the bubble-like vacuum portion is suppressed from remaining in the liquid crystal layer in the display region.
  • a polymerizable component (monomer or oligomer) that is polymerized by ultraviolet irradiation is mixed in the liquid crystal material, and a predetermined voltage is applied to the liquid crystal layer to polymerize the polymerizable component in a state where the liquid crystal molecules are inclined.
  • the liquid crystal material is used as an uncured sealing material. If contact is made, there is a possibility that an abnormality may occur in the growth of the polymer or the pretilt angle of the liquid crystal molecules when the sealing material is cured or the polymerizable component is irradiated with ultraviolet rays.
  • the liquid crystal display device since the liquid crystal material is prevented from coming into contact with the uncured sealing material, the growth of the polymer in the liquid crystal material is achieved even when the PSA technique is employed. And anomalies in the pretilt angle of liquid crystal molecules are suppressed. As a result, the display quality can be reliably improved by the PSA technology.
  • the wall portions and the sealing material are provided so as to be separated from each other.
  • the liquid crystal material goes around each wall-like portion and spreads in the gap between each wall-like portion that becomes a non-display area and the sealing material.
  • a bubble-like vacuum portion remains in the gap between each wall-like portion filled with the liquid crystal material and the sealing material after the display area. become.
  • the thickness of the liquid crystal layer is not easily changed by vibration or impact, and the wall-like portion is arranged on the display area side. The possibility of moving to the display area is as low as possible. Therefore, the liquid crystal material is prevented from coming into contact with the uncured sealing material, and the bubble-like vacuum portion is favorably suppressed from remaining in the liquid crystal layer in the display region.
  • the sealing material is formed in a rectangular frame shape, and has a pair of first sides extending in one direction and a pair of second sides extending in a direction orthogonal to the first sides,
  • the wall-shaped portion includes a pair of first wall-shaped portions facing each other along the first sides and a pair of second wall-shaped portions facing each other along the second sides. Preferably it is.
  • the liquid crystal material is formed in the region surrounded by the pair of first wall portions and the pair of second wall portions in the step of dropping the liquid crystal material onto the display region of the first substrate. , The spread of the liquid crystal material to the portion close to the dropping point of the liquid crystal material on each side (first side and second side) of the sealing material is reduced to each wall-like part (first wall-like part and This prevents the liquid crystal material from coming into contact with each side of the uncured sealing material.
  • the sealing material is formed in a rectangular frame shape, and the plurality of wall-shaped portions include a pair of corner wall-shaped portions extending in directions orthogonal to each other along a portion forming at least one corner of the sealing material. It is preferable to have.
  • the liquid crystal material in the sealing material is dropped by dropping the liquid crystal material into the area inside the pair of corner wall portions in the step of dropping the liquid crystal material into the display area of the first substrate.
  • the spread of the liquid crystal material to the portion forming the corner close to the dropping point of the material is hindered by each corner wall-shaped portion, and the liquid crystal material is favorably suppressed from contacting the uncured sealing material.
  • region inside a pair of corner wall-shaped part is an area
  • each wall-shaped portion does not necessarily need to be in contact with the second substrate, but is preferably in contact with the second substrate.
  • the liquid crystal material is suppressed from reaching the sealing material over the wall-like portion. Contact is well suppressed.
  • each said wall-shaped part is a spacer for hold
  • the first substrate is provided with columnar spacers for maintaining the thickness of the liquid crystal layer, and the wall portions are made of the same material as the spacers.
  • each wall-like portion can be formed at the same time as the spacer, so that the manufacturing process does not increase to form each wall-like portion, and the manufacturing cost is reduced.
  • the first substrate is a color filter substrate having a plurality of color filters, and each of the wall portions is preferably configured by stacking the color filters of different colors.
  • each wall-shaped portion can be formed simultaneously with the color filters of a plurality of colors, so that the manufacturing process does not increase to form each wall-shaped portion, and the manufacturing cost is reduced.
  • the method for manufacturing a liquid crystal display device is provided between the first substrate and the second substrate, the first substrate and the second substrate disposed so as to face each other, and the first substrate and the second substrate.
  • a display region for displaying an image inside the sealing material comprising: a frame-shaped sealing material for bonding the substrate and the second substrate to each other; and a liquid crystal layer in which a liquid crystal material is sealed inside the sealing material;
  • the wall-shaped portion forming step with respect to the first substrate in which the frame-shaped seal region for arranging the sealing material is defined, A plurality of wall-like portions are formed in the region so as to extend along the seal region and to be separated from each other.
  • the liquid crystal material spreads between the wall portions so as to reach the sealing material.
  • the dropping amount of the liquid crystal material is smaller than the appropriate amount in the dropping step, a bubble-like vacuum portion remains in the non-display area near the sealing material filled with the liquid crystal material after the display area. become.
  • the thickness of the liquid crystal layer is unlikely to fluctuate due to vibration, impact, or the like, so that the possibility that the bubble-like vacuum portion moves to the display region is relatively low. Therefore, the liquid crystal material is prevented from coming into contact with the uncured sealing material, and the bubble-like vacuum portion is suppressed from remaining in the liquid crystal layer in the display region.
  • the method for manufacturing a liquid crystal display device since the liquid crystal material is prevented from coming into contact with the uncured sealing material, the growth of the polymer in the liquid crystal material is achieved even if so-called PSA technology is employed. And anomalies in the pretilt angle of liquid crystal molecules are suppressed. As a result, the display quality can be reliably improved by the PSA technology.
  • the seal region is defined as a rectangular frame shape, and has a pair of first side regions extending in one direction and a pair of second side regions extending in a direction orthogonal to the first side regions,
  • a pair of first wall-shaped portions facing each other along the first side regions and a pair of second wall-shaped portions facing each other along the second side regions.
  • the liquid crystal material is preferably dropped in a region surrounded by the pair of first wall-shaped portions and the pair of second wall-shaped portions.
  • the spread of the liquid crystal material to the portions close to the dropping point of the liquid crystal material on each side of the sealing material is hindered by the respective wall-like portions (the first wall-like portion and the second wall-like portion). It is satisfactorily suppressed that the liquid crystal material comes into contact with each side of the cured sealing material.
  • the sealing region is defined as a rectangular frame shape, and in the wall-shaped portion forming step, a pair of corner wall-shaped portions extending in a direction orthogonal to each other along a portion forming at least one corner of the sealing region.
  • the liquid crystal material is preferably dropped into a region inside the pair of corner wall portions.
  • the spread of the liquid crystal material to the portion of the sealing material that forms the corner close to the dropping point of the liquid crystal material is hindered by each corner wall-shaped portion, and the liquid crystal material contacts the uncured sealing material. Is satisfactorily suppressed.
  • the non-display area is also provided in the inner peripheral portion of the seal material, and the first substrate extends along the seal material to the non-display area provided in the inner peripheral portion of the seal material and is separated from each other. Since the plurality of wall-like portions are provided, the liquid crystal material can be prevented from coming into contact with the uncured sealing material, and the bubble-like vacuum portion can be prevented from remaining in the liquid crystal layer of the display region. . As a result, the display quality in the liquid crystal display device can be improved, and it is possible to suppress the occurrence of defective products due to the sealing material being crushed or causing poor curing.
  • FIG. 1 is a plan view schematically showing the liquid crystal display device according to the first embodiment.
  • FIG. 2 is a cross-sectional view schematically showing a part of the liquid crystal display device along the line II-II in FIG.
  • FIG. 3 is a plan view schematically showing the color filter substrate on which each wall-like portion is formed.
  • FIG. 4 is a cross-sectional view schematically showing a part of the color filter substrate along the line IV-IV in FIG.
  • FIG. 5 is a plan view schematically showing a color filter substrate on which a sealing material is formed.
  • FIG. 6 is a cross-sectional view schematically showing a part of the color filter substrate along the line VI-VI in FIG. FIG.
  • FIG. 7 is a plan view schematically showing a color filter substrate onto which a liquid crystal material has been dropped.
  • FIG. 8 is a plan view schematically showing a state when the color filter substrate and the thin film transistor substrate are bonded together.
  • FIG. 9 is a cross-sectional view schematically showing a state in which the color filter substrate and the thin film transistor substrate are bonded together along the line IX-IX in FIG.
  • FIG. 10 is a cross-sectional view schematically illustrating a part of the liquid crystal display device according to the second embodiment.
  • FIG. 11 is a cross-sectional view schematically showing a part of the liquid crystal display device of the third embodiment.
  • FIG. 12 is a cross-sectional view schematically illustrating a part of the liquid crystal display device according to the fourth embodiment.
  • FIG. 13 is a plan view schematically showing the liquid crystal display device of the fifth embodiment.
  • FIG. 14 is a plan view schematically showing a color filter substrate onto which a liquid crystal material is dropped in the fifth embodiment.
  • FIG. 15 is a plan view schematically showing a liquid crystal display device of another embodiment.
  • Embodiment 1 of the Invention 1 to 9 show Embodiment 1 of a liquid crystal display device according to the present invention.
  • FIG. 1 is a plan view schematically showing the liquid crystal display device S of the present embodiment from the thin film transistor substrate 20 side.
  • FIG. 2 is a sectional view schematically showing a part of the liquid crystal display device S along the line II-II in FIG. 3 to 9 are diagrams for explaining a method of manufacturing the liquid crystal display device S to be described later.
  • the liquid crystal display device S includes a color filter substrate 10 as a first substrate and a thin film transistor substrate 20 as a second substrate, which are disposed so as to face each other, and the color filter substrate 10. And a liquid crystal layer 25 provided between the thin film transistor substrate 20 and a display area D that includes a plurality of pixels to display an image, and a non-display area F is defined outside the display area D. Yes.
  • the color filter substrate 10 and the thin film transistor substrate 20 are formed, for example, in a rectangular shape as shown in FIG. 1, and alignment films 26 and 27 are provided on the surface on the liquid crystal layer 25 side as shown in FIG. Polarizers 28 and 29 are provided on the side opposite to the layer 25, respectively.
  • a sealing material 30 is disposed between the color filter substrate 10 and the thin film transistor substrate 20, and the substrates 10 and 20 are bonded to each other by the sealing material 30.
  • the seal material 30 is formed in, for example, a rectangular frame shape so as to extend along the outer edge of the color filter substrate 10, and extends in the short side direction (left and right direction in the drawing) of the color filter substrate 10.
  • the first side 30a and a pair of second sides 30b extending in the long side direction (vertical direction in the drawing) orthogonal to each of the first sides 30a.
  • a display region D is defined inside the sealing material 30.
  • the non-display area F is provided on the outer side of the sealing material 30 and also on the inner peripheral portion of the sealing material 30.
  • the liquid crystal layer 25 is configured by sealing the liquid crystal material 24 inside the sealing material 30.
  • the liquid crystal layer 25 contains a polymer (polymer), and a stable pretilt angle is given to the liquid crystal molecules by the action of the polymer. That is, the liquid crystal display device S of the present embodiment employs a so-called PSA (Polymer Stabilized Alignment) technique, which makes the response time of the liquid crystal molecules relatively short when performing image display, and the liquid crystal molecules. The alignment disorder is less likely to occur.
  • PSA Polymer Stabilized Alignment
  • the color filter substrate 10 has a glass substrate 11, and a plurality of color filters 12 are provided on the glass substrate 11 in a matrix corresponding to each pixel.
  • These multiple color filters 12 are constituted by, for example, three color filters 12r, 12g, and 12b of red, green, and blue, and these color filters 12r, 12g, and 12b are periodically arranged in the row direction. .
  • the color filter substrate 10 is provided with a black matrix 13 so as to partition each color filter 12, and a common electrode 14 made of ITO (Indium Tin Oxide) or the like is formed so as to cover each color filter 12.
  • a common electrode 14 made of ITO (Indium Tin Oxide) or the like is formed so as to cover each color filter 12.
  • a plurality of columnar spacers 15 made of a resin material or the like are provided on the common electrode 14 at predetermined intervals so as to overlap the black matrix 13, and the upper surface of each spacer 15 is in contact with the thin film transistor substrate 20. As a result, the thickness of the liquid crystal layer 25 is maintained.
  • the color filter substrate 10 includes a plurality of wall-shaped portions extending along the seal material 30 and spaced apart from each other in a non-display area F provided on the inner peripheral portion of the seal material 30. 16 is provided.
  • the plurality of wall-shaped portions 16 include a pair of first wall-shaped portions 16a facing each other along each first side 30a of the sealing material 30, and a pair of first wall-shaped portions 16 facing each other along each second side 30b. It consists of two wall-shaped parts 16b.
  • These wall-like parts 16 are arranged in accordance with a dropping point where the liquid crystal material is dropped in a dropping step described later. Specifically, a pair of first wall-like portions 16a is provided along the central portion of each first side 30a. In addition, two pairs of the second wall-shaped portions 16b are provided so as to be aligned along the respective second sides 30b, and the non-display area F on the inner peripheral portion of the sealing material 30 is defined as each second side 30b. Are arranged in each region divided into two in the center in the extending direction.
  • each wall portion 16 and the sealing material 30 are provided so as to be separated from each other, and gaps are formed between the wall portions 16 and the sealing material 30, respectively.
  • the liquid crystal material 24 is also filled in the gap with the material 30.
  • each wall portion 16 is formed of the same resin material as each spacer 15, and the upper surface is in contact with the thin film transistor substrate 20, and maintains the thickness of the liquid crystal layer 25 together with each spacer 15. is doing.
  • the thin film transistor substrate 20 includes a glass substrate 21 shown in FIG. 2, and although not shown, a plurality of source lines are provided on the glass substrate 21 so as to extend in parallel with each other and are orthogonal to each source line. A plurality of gate lines are provided so as to extend in parallel to each other. Each of these source lines and each gate line is formed so as to partition an area constituting each pixel. In the region constituting each of these pixels, the thin film transistor connected to the source line and the gate line that form each crossing portion in the vicinity of the crossing portion between each source line and each gate line, and the thin film transistor connected to the thin film transistor in FIG. The pixel electrode 22 shown is provided.
  • the thin film transistor substrate 20 is formed in a large area longer in one direction (vertical direction in the drawing) than the color filter substrate 10 and protrudes outward from the color filter substrate 10. 20a.
  • the mounting unit 20a supplies a driving circuit chip for driving a thin film transistor and the like, a power supply to the driving circuit chip and a signal from an external circuit to the color filter substrate 10 and the thin film transistor substrate 20.
  • a flexible printed wiring board or the like is mounted.
  • the liquid crystal display device S sequentially writes a predetermined charge to each pixel electrode 22 via each thin film transistor in accordance with a predetermined signal input from an external circuit, and between each pixel electrode 22 and the common electrode 14.
  • a predetermined voltage to the liquid crystal layer 25
  • the orientation of the liquid crystal molecules is controlled for each pixel, and a desired image display is performed in the display region D.
  • FIG. 3 is a plan view schematically showing the color filter substrate 10 on which the wall portions 16 are formed.
  • FIG. 4 is a cross-sectional view schematically showing the color filter substrate 10 along the line IV-IV in FIG.
  • FIG. 5 is a plan view schematically showing the color filter substrate 10 on which the sealing material 30 is formed.
  • FIG. 6 is a cross-sectional view schematically showing the color filter substrate 10 along the line VI-VI in FIG.
  • FIG. 7 is a plan view schematically showing the color filter substrate 10 onto which the liquid crystal material 24 has been dropped.
  • FIG. 8 is a plan view schematically showing a state in which the color filter substrate 10 and the thin film transistor substrate 20 are bonded together.
  • FIG. 9 is a cross-sectional view schematically showing a state in which the color filter substrate 10 and the thin film transistor substrate 20 are bonded together along the line IX-IX in FIG.
  • the manufacturing method of the liquid crystal display device S of the present embodiment includes a wall-shaped portion forming step, a sealing material forming step, a dropping step, and a bonding step.
  • a rectangular frame-shaped seal region 31 (shown in FIG. 3 to be referred to later) for disposing the sealant 30 is defined so that a region F ′ to be a non-display region F is also provided in the inner periphery.
  • Two glass substrates 11 and 21 are prepared.
  • the seal region 31 includes a pair of first side regions 31a for arranging the first sides 30a of the sealant 30 and a pair of second sides for arranging the second sides 30b. And a region 31b.
  • a black matrix 13, a color filter 12 of each color, a common electrode 14 and the like are formed on one glass substrate 11 in order. Then, a wall-shaped part formation process is performed.
  • the wall-shaped portion forming step first, a resin material having photosensitivity is applied to the surface of the common electrode 14 by spin coating or the like, followed by pre-baking, exposure, development with an alkaline solution, and post-baking.
  • the wall portions 16 are formed in the region F ′ that is a part of the non-display region F on the inner peripheral portion of the seal region 31 so as to extend along the seal region 31 and to be separated from each other.
  • the pair of first wall portions 16a are formed so as to face each other along each first side region 31a, and the pair of second walls so as to face each other along each second side region 31b.
  • a shaped portion 16b is formed.
  • the spacers 15 are formed together with the wall portions 16. In this way, the color filter substrate 10 is manufactured.
  • an alignment film 26 is formed on the surface of the color filter substrate 10 by a printing method or the like.
  • each wiring source line, gate line, etc.
  • thin film transistor thin film transistor, pixel electrode 22, and the like are formed, and the thin film transistor substrate 20 is manufactured. Thereafter, an alignment film 27 is formed on the surface of the thin film transistor substrate 20 by a printing method or the like.
  • the color filter substrate 10 includes an epoxy resin and an acrylic resin, for example, an uncured sealing material that has ultraviolet curing properties as well as thermosetting properties.
  • 30 is formed in a rectangular frame shape in the seal region 31 by drawing with a dispenser or screen printing.
  • a polymerizable component (monomer or oligomer) that is polymerized by irradiation of ultraviolet rays is mixed into the region D ′ that becomes the display region D of the color filter substrate 10 on which the wall portions 16 and the sealing material 30 are formed.
  • a predetermined amount of the liquid crystal material 24 is dropped by a dispenser. Specifically, in the present embodiment, as shown in FIG. 7, each region surrounded by the pair of first wall-shaped portions 16a and the pair of second wall-shaped portions 16b, that is, the pair of first wall-shaped portions. Liquid crystal at two locations, a region surrounded by the portion 16a and one pair of second wall portions 16b, and a region surrounded by the pair of first wall portions 16a and the other pair of second wall portions 16b. Each material 24 is dropped.
  • the substrates 10 and 20 are aligned so that the region D ′ which becomes the display region D of the color filter substrate 10 and the thin film transistor substrate 20 overlaps each other in the evacuated processing chamber.
  • the two substrates 10 and 20 are bonded to each other via a liquid crystal material 24 dropped inside the uncured sealing material 30.
  • both the substrates 10 and 20 are pressurized so that the spacers 15 and the wall-like portions 16 are brought into contact with the thin film transistor substrate 20 so as to have a predetermined interval.
  • the liquid crystal material 24 is concentrically pushed between the substrates 10 and 20 toward the uncured sealing material 30 around the dropping point.
  • the sealing material 30 is cured by irradiating the sealing material 30 with ultraviolet rays
  • the sealing material 30 is further cured by subjecting the sealing material 30 to heat treatment, and the color filter substrate 10.
  • the thin film transistor substrate 20 are bonded to each other.
  • the liquid crystal layer 25 is formed by sealing the liquid crystal material 24 between the pair of substrates 10 and 20 by the sealing material 30.
  • a predetermined voltage is applied to the liquid crystal layer 25 between each pixel electrode 22 and the common electrode 14 so that the liquid crystal molecules are aligned at a predetermined angle.
  • the liquid crystal layer 25 is irradiated with ultraviolet rays to polymerize the polymerizable component in the liquid crystal material 24. Thereby, a stable pretilt angle is given to the liquid crystal molecules by the action of the produced polymer.
  • polarizing plates 28 and 29 are respectively attached to the outer surfaces of the substrates 10 and 20 bonded together, and a drive circuit chip and a flexible printed wiring board are mounted on the mounting portion 20a of the thin film transistor substrate 20.
  • the liquid crystal display device S is completed.
  • the non-display area F is also provided on the inner peripheral portion of the sealing material 30 and the color filter substrate 10 is not displayed on the inner peripheral portion of the sealing material 30.
  • a plurality of wall-like portions 16 configured of a pair of first wall-like portions 16a and two pairs of second wall-like portions 16b so as to extend in the region F along the sealant 30 and to be separated from each other. Is provided.
  • the non-circumferential portion in the inner peripheral portion of the seal region 31 with respect to the substrate in which the frame-shaped seal region 31 for disposing the sealant 30 is defined in the partition wall forming step.
  • the sealing material 30 is formed on the color filter substrate 10 in the sealing material forming step. Then, in a subsequent dropping step, the liquid crystal material 24 is dropped into each region surrounded by the pair of first wall portions 16a and the pair of second wall portions 16b. Accordingly, when the color filter substrate 10 and the thin film transistor substrate 20 are bonded together in the subsequent bonding step, as shown in FIGS. 8 and 9, the liquid crystal material on each side 30 a and 30 b of the sealing material 30.
  • each wall-shaped part 16 is spaced apart and provided from the sealing material 30, after hardening the sealing material 30 by irradiation of an ultraviolet-ray, the liquid crystal material 24 wraps around each wall-shaped part 16, and is a non-display area
  • the thickness of the liquid crystal layer 25 is unlikely to fluctuate due to vibration or impact, and the wall-like portion 16 is disposed on the display region D side.
  • the possibility that the portion moves to the display area D is as low as possible.
  • the liquid crystal display device employing the so-called PSA technology
  • the polymerization is performed when the sealing material 30 is cured or the polymerizable component is irradiated with ultraviolet rays.
  • the liquid crystal material 24 can be prevented from coming into contact with the uncured sealing material 30, so that the growth of the polymer in the liquid crystal material 24 and the pretilt angle of the liquid crystal molecules can be prevented.
  • the occurrence of an abnormality can be suppressed. As a result, display quality can be reliably improved by the PSA technology.
  • each wall-shaped part 16 is formed of the same resin material as each spacer 15, and each wall-shaped part 16 is formed in order to form each wall-shaped part 16 simultaneously with each spacer 15 in the wall-shaped part forming step. Therefore, the manufacturing cost can be reduced without increasing the manufacturing process.
  • FIG. 10 shows Embodiment 2 of the liquid crystal display device S according to the present invention.
  • the same portions as those in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description thereof is omitted.
  • FIG. 10 is a cross-sectional view schematically showing a part of the liquid crystal display device S of the present embodiment (a portion corresponding to FIG. 2).
  • each wall portion 16 is formed of the same resin material as each spacer 15. However, in this embodiment, each wall portion 16 is configured by stacking color filters 12 of different colors. ing. Specifically, as shown in FIG. 10, each wall-shaped portion 16 of the present embodiment is configured by sequentially stacking red and green color filters 12 r and 12 g, and as in the first embodiment, The sealant 30 is provided so as to be separated from the sealant 30, and the upper surface is in contact with the thin film transistor substrate 20.
  • the red, green, and blue color filters 12r, 12g, and 12b are first formed in order when the color filter substrate 10 is manufactured. At this time, each red color filter 12r is formed, a red color filter 12r is also formed in a region where each wall-shaped portion 16 is arranged, each green color filter 12g is further formed, and each wall-shaped portion 16 is formed.
  • Each wall-shaped part 16 is formed by laminating
  • each wall 16 is formed by laminating red and green color filters 12r and 12g.
  • each wall 16 is formed of green and blue color filters 12g. , 12b may be laminated, or each color filter 12 may be laminated by appropriately combining other different colors according to the formation order of the color filters 12r, 12g, 12b of each color.
  • the color filters 12 constituting each wall-shaped portion 16 are not limited to two colors, and each wall-shaped portion 16 is formed by sequentially stacking all three color filters 12r, 12g, and 12b so as to have a desired height. It may be configured.
  • each wall-shaped part 16 is larger in volume than the spacers 15, and therefore are less likely to be crushed between the substrates 10 and 20 than the spacers 15. Since each spacer 15 is squeezed between the color filter substrate 10 and the thin film transistor substrate 20, both the substrates 10 and 20 have a predetermined interval, so that each wall portion 16 is formed at the same height as each spacer 15. In this case, there is a possibility that the thickness of the liquid crystal layer 25 varies between the outer peripheral portion of the display region D and the central portion thereof. Therefore, it is preferable that each wall-shaped portion 16 is formed to be slightly lower than each spacer 15.
  • the common electrode 14 is formed so as to cover each color filter 12 to produce the color filter substrate 10, and the thin film transistor substrate 20 is produced in the same manner as in the first embodiment. A matching process is performed.
  • Embodiment 2- Therefore, according to the second embodiment as well, when the color filter substrate 10 and the thin film transistor substrate 20 are bonded together in the bonding step, it is possible to suppress the liquid crystal material 24 from coming into contact with the uncured sealing material 30 and display. It can suppress that a bubble-like vacuum part remains in the liquid crystal layer 25 of the area
  • FIG. 11 shows Embodiment 3 of the liquid crystal display device S according to the present invention.
  • FIG. 11 is a cross-sectional view schematically showing a part of the liquid crystal display device S of the present embodiment (a portion corresponding to FIG. 2).
  • the color filter substrate 10 is the first substrate
  • the thin film transistor substrate 20 is the second substrate
  • the wall portions 16 are provided on the color filter substrate 10.
  • the thin film transistor substrate 20 is the first substrate
  • the color filter substrate 10 is the second substrate
  • the thin film transistor substrate 20 is provided with the respective wall-like portions 16 as shown in FIG.
  • Each wall portion 16 is formed so as to be disposed between the color filter substrate 10 and the thin film transistor substrate 20 at the same position as in the first embodiment, and the upper surface is in contact with the color filter substrate 10.
  • the spacers 15 formed on the color filter substrate 10 in the first embodiment are formed so as to overlap the black matrix 13.
  • each wall-shaped portion 16 and each spacer 15 are formed by performing pre-baking, exposure, development with an alkaline solution, and post-baking. In this way, the thin film transistor substrate 20 having each wall portion 16 is manufactured.
  • the color filter substrate 10 having the same configuration as that of the first embodiment is manufactured except that the spacers 15 and the wall portions 16 are not formed. Then, an uncured sealing material 30 is formed in a rectangular frame shape on the thin film transistor substrate 20 in the sealing material forming step, and then a predetermined amount of liquid crystal material 24 is applied to the display region D of the thin film transistor substrate 20 on which the sealing material 30 is formed in the dropping step. After the dropping, the color filter substrate 10 and the thin film transistor substrate 20 are bonded together in the bonding step, and the sealing material 30 is cured.
  • each wall-like portion 16 is formed on the thin film transistor substrate 20 so as to be disposed between the color filter substrate 10 and the thin film transistor substrate 20 in the same position as in the first embodiment.
  • the color filter substrate 10 and the thin film transistor substrate 20 are bonded together in the alignment step, it is possible to suppress the liquid crystal material 24 from coming into contact with the uncured sealing material 30 and to form bubbles in the liquid crystal layer 25 in the display region D.
  • the wall portions 16 are formed at the same time as the spacers 15 in the wall portion forming step, the number of manufacturing steps increases to form the wall portions 16. Manufacturing costs can be reduced.
  • FIG. 12 shows Embodiment 4 of the liquid crystal display device S according to the present invention.
  • FIG. 12 is a cross-sectional view schematically showing a part of the liquid crystal display device S of the present embodiment (a portion corresponding to FIG. 2).
  • the thickness of the liquid crystal layer 25 is maintained by the spacers 15 and the wall-shaped portions 16.
  • the wall-shaped portions 16 are provided as shown in FIG. It is a spacer that maintains the thickness of the liquid crystal layer 25.
  • the method for manufacturing the liquid crystal display device S includes a wall-shaped portion forming step, a sealing material forming step, a dropping step, and a bonding step.
  • the wall-shaped portion forming step the columnar spacers 15 are formed simultaneously with the wall-shaped portions 16. Since it is the same as that of the said Embodiment 1 except the point which does not carry out, the description is abbreviate
  • Embodiment 4- when the color filter substrate 10 and the thin film transistor substrate 20 are bonded together in the bonding step, it is possible to suppress the liquid crystal material 24 from coming into contact with the uncured sealing material 30 and display. Since the bubble-like vacuum portion can be prevented from remaining in the liquid crystal layer 25 in the region D, and the step of forming the spacer is not required separately from the step of forming the wall portions 16, the wall portions 16 The manufacturing cost can be reduced without increasing the number of manufacturing steps.
  • the height of each of the wall-like portions 16 and the spacers causes a difference in the display area D. While there is a possibility that the thickness of the liquid crystal layer 25 varies between the outer peripheral portion and the central portion, according to the liquid crystal display device S of the present embodiment, it is necessary to form a spacer separately from each wall portion 16. Therefore, variation in the thickness of the liquid crystal layer 25 can be suppressed.
  • Embodiment 5 of the Invention >> 13 and 14 show Embodiment 5 of the liquid crystal display device S according to the present invention.
  • FIG. 13 is a plan view schematically showing the liquid crystal display device S of the present embodiment.
  • FIG. 14 is a plan view schematically showing the color filter substrate 10 onto which the liquid crystal material 24 has been dropped in the present embodiment.
  • the plurality of wall-shaped portions 16 are opposed to each other along the pair of first wall-shaped portions 16 a and the second sides 30 b that are opposed to each other along the first sides 30 a of the sealing material 30.
  • the plurality of wall-shaped portions 16 are arranged along the corners of the sealing material 30 as shown in FIG. 13.
  • a pair of corner wall portions 16c extending in directions orthogonal to each other are provided.
  • the pair of corner wall portions 16c are provided, for example, along portions that form one opposite corner portions (upper left corner portion and lower right corner portion in FIG. 13) of the sealing material 30, and are described in the first embodiment.
  • the sealant 30 is formed so as to be separated from the sealant 30 and the upper surface is in contact with the thin film transistor substrate 20.
  • the pair of corner wall portions 16c are provided along the portions of the seal member 30 that form one opposite corner portion.
  • the pair of corner wall portions 16c is a sealant. It may be provided at all four corners of the material 30 or may be provided only at one corner.
  • each wall-like portion 16 is formed in the same manner as in the first embodiment except that the formation position of each wall-like portion 16 is different in the wall-like portion forming step. That is, in this wall-shaped portion forming step, a pair of corner wall-shaped portions 16c extending in directions orthogonal to each other are formed along one portion of the seal region 31 that forms the opposite corner portions. At this time, the spacers 15 are also formed together with the wall portions 16. After producing the color filter substrate 10 in this way, an alignment film 26 is formed on the surface of the color filter substrate 10.
  • the thin film transistor substrate 20 is manufactured, the alignment film 27 is formed on the surface of the thin film transistor substrate 20, the sealing material forming step is performed, and then the dropping step is performed.
  • the dropping step of the present embodiment as shown in FIG. 14, a predetermined amount of liquid crystal material 24 is dropped by a dispenser onto the inner region of each pair of corner wall portions 16c and the central portion of the region D ′ that becomes the display region D.
  • region inside a pair of corner wall-shaped part 16c is an area
  • each wall-shaped portion 16 and the sealing material 30 are provided so as to be separated from each other.
  • the present invention is not limited to this, and each wall-shaped portion 16 and the sealing material 30 are mutually connected. You may be provided so that it may contact. Even in such a configuration, when the color filter substrate 10 and the thin film transistor substrate 20 are bonded together, the liquid crystal material spreads to the portions along the wall portions 16 of the sealing material 30 by the wall portions 16. Therefore, it is possible to suppress contact between the sealing material 30 and the liquid crystal material 24 before the sealing material 30 is cured by irradiation with ultraviolet rays.
  • the liquid crystal material 24 spreads so as to reach the sealing material 30 from between the wall portions 16.
  • the dropping amount of the liquid crystal material 24 is less than the appropriate amount, a bubble-like vacuum portion is formed in the non-display area F in the vicinity of the sealing material 30 filled with the liquid crystal material 24 after the display area D. Will remain.
  • the thickness of the liquid crystal layer 25 is unlikely to fluctuate due to vibration, impact, or the like, so that the possibility that the bubble-like vacuum portion moves to the display region D is relatively low. Therefore, it is possible to suppress the liquid crystal material 24 from coming into contact with the uncured sealing material 30, and it is possible to suppress the bubble-like vacuum portion from remaining in the liquid crystal layer 25 in the display region D.
  • each wall-shaped part 16 and the sealing material 30 are provided so as to contact each other as described above, the color filter substrate 10 and the thin film transistor substrate 20 are connected to each other in the manufacturing of the liquid crystal display device S. 30 and the liquid crystal material 24 are pasted together, the portion along which each wall-like portion 16 of the sealing material 30 extends is spread almost only to the outside, with the sealing material 30 hardly spreading inward by each wall-like portion 16. Therefore, each wall-like part 16 of the sealing material 30 is less likely to be crushed than other parts that are not along. As a result, there is a possibility that the thickness of the liquid crystal layer 25 in the display area D in the vicinity of each wall portion 16 and other areas may vary.
  • each wall-shaped part 16 and the sealing material 30 when providing each wall-shaped part 16 and the sealing material 30 so as to contact each other, the wavelength of light when the resin material for forming each wall-shaped part 16 is exposed, the resin material
  • the side surface of each wall-shaped portion 16 on the sealing material 30 side is inclined relatively large so as to approach the display region D side toward the top. .
  • the portion along which each wall-like portion 16 of the sealing material 30 extends also has an inclined side surface on the sealing material 30 side of each wall-like portion 16. Since the sealing material 30 spreads well inside and spreads both inside and outside, the thickness of the liquid crystal layer 25 in the display area D in the vicinity of each wall 16 and other areas. It is possible to suppress the occurrence of variations.
  • the plurality of wall-like portions 16 are mutually connected along the pair of first wall-like portions 16 a and the second sides 30 b facing each other along the first sides 30 a of the sealing material 30. It has a pair of opposing second wall-shaped portions 16b.
  • the plurality of wall-shaped portions 16 have a pair of corner wall-shaped portions 16c extending in a direction orthogonal to each other along a portion forming the corner of the sealing material 30.
  • the invention is not limited to this, and the plurality of wall-shaped portions 16 may not be provided as a pair as shown in FIG. 15.
  • metal wirings are densely arranged on a part of the thin film transistor substrate 20.
  • the liquid crystal material 24 is provided at a position to suppress the spread of the liquid crystal material 24 to the portion where the curing of the sealing material 30 is difficult to proceed because the ultraviolet rays for curing the sealing material 30 are blocked by the metal wiring. Good. Even with this configuration, the liquid crystal material 24 is slow to reach a portion of the seal material 30 that is hard to be cured. Therefore, the seal material 30 and the liquid crystal material 24 are bonded before the seal material 30 is cured by irradiation with ultraviolet rays. It is possible to suppress contact and to prevent a bubble-like vacuum portion from remaining in the liquid crystal layer 25 in the display region D.
  • each wall-shaped portion 16 is in contact with the opposing substrate.
  • the present invention is not limited to this, and each wall-shaped portion 16 is not in contact with the opposing substrate. May be.
  • each wall-shaped portion 16 suppresses the spread of the liquid crystal material 24 to the portion along each wall-shaped portion 16 of the sealing material 30. It is possible to suppress the liquid crystal material 24 from coming into contact with the uncured sealing material 30 and to prevent a bubble-like vacuum portion from remaining in the liquid crystal layer 25 in the display region D.
  • each wall portion 16 is formed simultaneously with the spacers 15.
  • each wall portion 16 is formed simultaneously with the color filters 12r and 12g of a plurality of colors.
  • the present invention is not limited to this, and each wall portion 16 includes each spacer 15 and each color. You may form in the process independent of the process of forming the filter 12.
  • the color filter substrate 10 or the thin film transistor substrate 20 is provided with a rivet for controlling the alignment of liquid crystal molecules, or a so-called transflective type having a reflective region that reflects light and a transmissive region that transmits light.
  • the wall portions 16 are formed simultaneously with the rivets and the adjustment layer. It is preferable to form.
  • the liquid crystal display device S is manufactured by performing the sealing material forming process after performing the wall-shaped portion forming process.
  • the present invention is not limited to this, and after performing the sealing material forming process.
  • the device S may be manufactured.
  • the liquid crystal display device S is manufactured by performing the wall-shaped portion forming step after the sealing material forming step, the liquid crystal material 24 is prevented from coming into contact with the uncured sealing material 30 and the display region D is formed. It is possible to suppress a bubble-like vacuum portion from remaining in the liquid crystal layer 25.
  • the color filter substrate 10 and the thin film transistor substrate 20 are bonded to each other with the sealing material 30 having both thermosetting properties and ultraviolet curable properties, and the liquid crystal display device S is manufactured.
  • the liquid crystal display device S may be manufactured by bonding the color filter substrate 10 and the thin film transistor substrate 20 with a sealing material having only ultraviolet curing properties.
  • the present invention is useful for a liquid crystal display device and a method for manufacturing the same.
  • the liquid crystal material is prevented from coming into contact with an uncured sealing material, and the liquid crystal layer in the display region has a bubble shape. It is suitable for a liquid crystal display device manufactured by a dropping injection method that is desired to suppress the remaining vacuum part and a manufacturing method thereof.

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  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Liquid Crystal (AREA)

Abstract

L'invention porte sur un dispositif d'affichage à cristaux liquides qui comporte : un premier substrat et un second substrat qui sont disposés de manière à être opposé l'un à l'autre ; un matériau d'étanchéité en forme de cadre qui est disposé entre le premier substrat et le second substrat et qui lie le premier substrat et le second substrat l'un à l'autre ; et une couche de cristaux liquides formée par scellement étanche d'un matériau à cristaux liquides à l'intérieur du matériau d'étanchéité. Le dispositif d'affichage à cristaux liquides possède une région d'affichage qui est définie à l'intérieur du matériau d'étanchéité et qui affiche une image, et la région de non-affichage définie à l'extérieur de la région d'affichage. La région de non-affichage est également disposée sur la section périphérique interne du matériau d'étanchéité. Le premier substrat comporte une pluralité de sections de type paroi qui sont espacées les unes des autres et qui s'étendent le long du matériau d'étanchéité, dans la région de non-affichage disposée sur la section périphérique interne du matériau d'étanchéité.
PCT/JP2009/004290 2008-11-20 2009-09-01 Dispositif d'affichage à cristaux liquides et procédé pour sa fabrication WO2010058502A1 (fr)

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CN2009801449087A CN102209927A (zh) 2008-11-20 2009-09-01 液晶显示装置及其制造方法
US13/127,509 US20110222013A1 (en) 2008-11-20 2009-09-01 Liquid crystal display device and manufacturing method thereof

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CN102314026A (zh) * 2011-07-27 2012-01-11 友达光电股份有限公司 显示面板
WO2019021896A1 (fr) * 2017-07-25 2019-01-31 シャープ株式会社 Dispositif d'affichage à cristaux liquides

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CN102707502B (zh) * 2011-05-12 2016-03-30 京东方科技集团股份有限公司 电子设备、液晶显示器及其制造方法
CN102609139B (zh) * 2012-02-08 2015-03-11 友达光电（苏州）有限公司 框胶结构
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US10018877B2 (en) * 2014-03-06 2018-07-10 Lg Display Co., Ltd. Liquid crystal display device
US10180599B2 (en) * 2014-11-20 2019-01-15 Shenzhen China Star Optoelectronics Technology Co., Ltd. Display panel and display device
JP2017116656A (ja) * 2015-12-22 2017-06-29 株式会社ジャパンディスプレイ 液晶表示装置
CN107024803A (zh) * 2017-04-11 2017-08-08 惠科股份有限公司 一种显示面板和显示装置
KR102376292B1 (ko) * 2017-07-26 2022-03-18 삼성디스플레이 주식회사 표시 장치
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