WO2016101360A1 - 掩模板、光配向方法及液晶显示装置 - Google Patents

掩模板、光配向方法及液晶显示装置 Download PDF

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Publication number
WO2016101360A1
WO2016101360A1 PCT/CN2015/070607 CN2015070607W WO2016101360A1 WO 2016101360 A1 WO2016101360 A1 WO 2016101360A1 CN 2015070607 W CN2015070607 W CN 2015070607W WO 2016101360 A1 WO2016101360 A1 WO 2016101360A1
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Prior art keywords
region
pixel
mask
panel
light
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PCT/CN2015/070607
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English (en)
French (fr)
Inventor
孙杰
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深圳市华星光电技术有限公司
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Application filed by 深圳市华星光电技术有限公司 filed Critical 深圳市华星光电技术有限公司
Priority to US14/436,450 priority Critical patent/US9678390B2/en
Publication of WO2016101360A1 publication Critical patent/WO2016101360A1/zh
Priority to US15/588,979 priority patent/US10048579B2/en

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G03F1/38—Masks having auxiliary features, e.g. special coatings or marks for alignment or testing; Preparation thereof
    • 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
    • G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
    • G02F1/13378—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation
    • G02F1/133788—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by treatment of the surface, e.g. embossing, rubbing or light irradiation by light irradiation, e.g. linearly polarised light photo-polymerisation
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F1/00—Originals for photomechanical production of textured or patterned surfaces, e.g., masks, photo-masks, reticles; Mask blanks or pellicles therefor; Containers specially adapted therefor; Preparation thereof
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/20—Exposure; Apparatus therefor
    • G03F7/2022—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure
    • G03F7/203—Multi-step exposure, e.g. hybrid; backside exposure; blanket exposure, e.g. for image reversal; edge exposure, e.g. for edge bead removal; corrective exposure comprising an imagewise exposure to electromagnetic radiation or corpuscular radiation
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/70—Microphotolithographic exposure; Apparatus therefor
    • G03F7/70058—Mask illumination systems
    • 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
    • G02F1/1343—Electrodes
    • G02F1/134309—Electrodes characterised by their geometrical arrangement
    • G02F1/134345—Subdivided pixels, e.g. for grey scale or redundancy

Definitions

  • the present invention relates to the field of liquid crystal technology, and in particular, to a mask, a light alignment method for aligning a liquid crystal display device using the mask, and a liquid crystal display device.
  • the most widely used alignment technique in the manufacture of liquid crystal displays is the rubbing alignment method.
  • the brush alignment method can provide strong alignment ability of liquid crystal molecules, but in the process of brushing, due to the contact friction of the flannel, static electricity and particle pollution are generated, and these pollutions often directly cause liquid crystal components. Damage.
  • the utility model has the advantages that the surface of the glass substrate can be prevented from being contaminated, the alignment of the small area can be performed, and the illuminating through the reticle can be used for pattern alignment, and the parameters of the liquid crystal unit, such as the pretilt angle, can be controlled by using the angle of the incident light and the length of the irradiation time. Surface orientation strength, etc.
  • a plurality of regions of the same alignment direction are formed in a plurality of regions in one pixel by the photo-alignment method, thereby improving the side visibility of the liquid crystal display.
  • a plurality of photomasks are required, and the incident light in different directions is used for multiple irradiation alignment, the manufacturing process is cumbersome, and the manufacturing cost is high.
  • Embodiments of the present invention provide a mask and a photoalignment method for aligning a liquid crystal display device using the mask.
  • a method of optical alignment comprising the following steps,
  • the upper alignment film of the upper panel and the lower alignment film of the lower panel are exposed by ultraviolet rays emitted from the mask in a second incident direction.
  • a high gray scale sub-pixel of the lower panel into a first high gray scale sub-pixel region and a second high gray scale sub-pixel region adjacent to each other along a long side of the pixel; and lower gray scale of the lower panel
  • the sub-pixel is divided into a first low gray-scale sub-pixel region and a second low gray-scale sub-pixel region that are adjacent and arranged along a long side of the pixel;
  • a high gray scale sub-pixel of the upper panel into a first high gray scale sub-pixel region and a second high gray scale sub-pixel region adjacent to each other along a short side of the pixel; and lower gray scale of the upper panel
  • the sub-pixel is divided into a first low gray-scale sub-pixel region and a second low gray-scale sub-pixel region that are adjacent and arranged along a short side of the pixel;
  • the upper panel and the lower panel are disposed perpendicular to each other.
  • the method further includes the following steps:
  • the first light-transmissive region of the mask is opened and corresponding to the first high-gray sub-pixel region of the lower panel; the first baffle of the mask blocks the second transparent region of the first opening;
  • the third transparent region of the mask is opened and corresponding to the first low gray sub-pixel region of the lower panel; the second baffle of the mask blocks the fourth transparent region of the second opening;
  • the fifth light-transmissive region of the reticle is opened and corresponding to the first high-gray sub-pixel region of the upper panel; the third baffle of the reticle blocks the sixth transparent region of the third opening;
  • the seventh light-transmitting region of the mask is opened and corresponding to the first low-gray sub-pixel region of the upper panel; and the fourth baffle of the mask blocks the eighth light-transmitting region of the fourth opening.
  • the ultraviolet rays pass through the first light transmission region of the mask plate in the first incident direction, and the third The light transmitting region is incident on the lower panel; the ultraviolet light is incident on the upper panel through the fifth light transmitting region and the seventh light transmitting region of the mask in the first incident direction.
  • the second transparent region of the mask is opened and corresponding to the second high gray sub-pixel region of the lower panel; the first baffle of the mask blocks the first transparent region of the first opening;
  • the fourth transparent region of the mask is opened and corresponding to the second low gray sub-pixel region of the lower panel; the second barrier of the mask blocks the third transparent region of the second opening;
  • the sixth light-transmitting region of the mask is opened and corresponding to the second high-gray sub-pixel region of the upper panel; the third baffle of the mask blocks the fifth light-transmitting region of the third opening;
  • An eighth light-transmissive region of the mask is opened and corresponding to a second low-gray sub-pixel region of the upper panel; and a fourth barrier of the mask blocks a seventh transparent region of the fourth opening.
  • the ultraviolet rays pass through the second light transmission region of the mask plate in the first incident direction, and the fourth The light transmitting region is incident on the lower panel; the ultraviolet light is incident on the upper panel through the sixth light transmitting region and the eighth light transmitting region of the mask in the first incident direction.
  • a mask board includes a light shielding plate body, a first opening, a second opening, a third opening and a fourth opening formed in the light shielding plate body, wherein the first opening of the mask plate includes an adjacent first light transmitting region And the second transparent region, the second opening of the mask includes an adjacent third transparent region and a fourth transparent region, and the third opening of the mask includes an adjacent fifth transparent region and the a sixth transparent region, the fourth opening of the mask includes an adjacent seventh transparent region and an eighth transparent region, and the mask is further provided with a first baffle, a second baffle, and a third block a first baffle for shielding the first light transmissive area or the second light transmissive area, wherein the second baffle is for shielding the third light transmissive area or the fourth translucent area In the light region, the third baffle is used to block the fifth light-transmitting region or the sixth light-transmitting region, and the fourth baffle is used to block the seventh light-transmitting region or the eighth light-transmitting region.
  • a liquid crystal display device includes a lower layer panel, an upper layer panel, and a liquid crystal layer disposed between the upper layer panel and the lower layer panel;
  • the upper layer panel includes an upper layer substrate and an upper alignment film disposed on the upper layer substrate;
  • the panel includes a lower substrate and a lower alignment film disposed on the lower substrate, the liquid crystal layer includes a plurality of liquid crystal molecules, and any pixel of the liquid crystal display device includes a high gray scale sub-pixel located at an upper end and a lower portion at a lower end a gray-scale sub-pixel, the high gray-scale sub-pixel and the low gray-scale sub-pixel are each divided into four domains, in which liquid crystal molecules of the liquid crystal layer Being oriented in different directions.
  • the angle between the liquid crystal molecules and the long side or the short side of the panel is less than 45 degrees.
  • the high gray scale sub-pixel of the lower panel is divided into a first high gray scale sub-pixel region and a second high gray scale sub-pixel region which are adjacent and arranged along a long side of the pixel.
  • the low grayscale sub-pixels of the lower panel are divided into first low grayscale sub-pixel regions and second low grayscale sub-pixel regions adjacent to each other along the long side of the pixel.
  • the high grayscale sub-pixels of the upper panel are divided into first high grayscale sub-pixel regions and second high grayscale sub-pixel regions adjacent to each other along the short side of the pixel.
  • the low grayscale sub-pixels of the upper panel are divided into first low grayscale sub-pixel regions and second low grayscale sub-pixel regions adjacent to each other along the short side of the pixel.
  • the mask plate of the present invention and the photo-alignment method using the same enable the mask to be reusable by providing the movable first baffle, the second baffle, the third baffle and the fourth baffle, thereby reducing
  • the number of mask plates in the process of optical alignment of the alignment film reduces the cost.
  • the lower layer panel and the upper panel are disposed, and the alignment film of the lower panel and the upper panel is simultaneously exposed by using the mask, and only one mask is used for the exposure to complete the alignment film process in the entire liquid crystal display device, thereby effectively reducing the exposure.
  • FIG. 1 is a schematic structural view of a liquid crystal display device according to the present invention.
  • FIG. 2 is a schematic structural view of a lower panel of the liquid crystal display device of FIG. 1;
  • FIG. 3 is a schematic structural view of an upper panel of the liquid crystal display device of FIG. 1;
  • FIG. 4 is a schematic structural view of a visor body of a reticle provided by a preferred embodiment of the present invention.
  • FIG. 5 and FIG. 6 are schematic diagrams showing the arrangement of an upper panel, a lower panel, and a mask provided by a preferred embodiment of the present invention
  • FIG. 7 is a flow chart of a method for optical alignment provided by a preferred embodiment of the present invention.
  • FIG. 8 to FIG. 13 are schematic cross-sectional views of respective bayonet of the mask when aligned by a mask according to a preferred embodiment of the present invention.
  • a preferred embodiment of the present invention provides a mask and a photoalignment method for aligning a liquid crystal display device using the mask.
  • the liquid crystal display device includes a lower layer panel 100, an upper layer panel 200, and a liquid crystal layer (not shown) disposed between the upper layer panel 200 and the lower layer panel 100.
  • the upper layer panel 200 includes an upper layer substrate and a setting.
  • the lower panel 100 includes a lower substrate and a lower alignment film (not shown) disposed on the lower substrate.
  • the liquid crystal layer includes a plurality of liquid crystal molecules 310. The mask can be used to expose the alignment film of the upper panel and the lower panel.
  • a pixel 10 of the liquid crystal display device includes a high gray scale sub-pixel H at an upper end and a low gray scale sub-pixel L at a lower end, the high gray The order sub-pixel H and the low gray scale sub-pixel L are disposed along the long side of the pixel.
  • the high gray scale sub-pixel H and the low gray scale sub-pixel L are each divided into four domains, having a structure of 2x2. In four adjacent domains, the liquid crystal molecules of the liquid crystal layer are aligned in different directions; in each domain, the angle between the liquid crystal molecules 310 and one side (long side or short side) of the panel is less than 45°.
  • the high gray scale sub-pixel H and the low gray scale sub-pixel L of the lower panel 100 are divided into left and right portions.
  • the high gray scale sub-pixel H of the lower panel 100 is divided into a first high gray scale sub-pixel region h 1 and a second high gray matrix sub-pixel region h 2 adjacent to each other along the long side of the pixel 10
  • the low gray scale sub-pixel L of the lower panel 100 is divided into a first low gray scale sub-pixel region 11 and a second low gray scale sub-pixel region l 2 which are adjacent and arranged along the long side of the pixel 10.
  • the liquid crystal display device optically aligns the high-gray sub-pixel H and the low-gray sub-pixel L of the lower panel 100 through the lower alignment film of the lower panel 100.
  • the high gray scale sub-pixel H and the low gray scale sub-pixel L of the upper panel 200 are formed into left and right portions.
  • the high gray scale sub-pixel H of the upper panel 200 is divided into a first high gray scale sub-pixel region h 3 and a second high gray matrix sub-pixel region h 4 adjacent to each other along the short side of the pixel 10
  • the low gray scale sub-pixel L of the upper panel 200 is divided into a first low gray scale sub-pixel region 13 and a second low gray scale sub-pixel region 14 which are adjacent and arranged along the short side of the pixel 10.
  • the liquid crystal display device optically aligns the high-gray sub-pixel H and the low-gray sub-pixel L of the upper panel 200 through the upper alignment film of the upper panel 200.
  • the lower layer panel 100 or the upper layer panel 200 is blocked by the mask 40, and the lower layer alignment film of the lower layer panel 100 or the upper layer alignment film of the upper layer panel 200 is exposed, such that the lower layer alignment film of the lower layer panel 100 and the upper layer panel 200
  • the upper alignment film has an alignment force as shown in FIG.
  • the lower panel 100 or the upper panel 200 is shielded by the mask 40, and optical alignment is performed.
  • the present invention provides a mask 40 required for a photo-alignment method, including a visor body 400, a first opening 401, a second opening 402, and a third opening 403 formed in the visor body 400.
  • the first opening 401 of the mask 40 includes an adjacent first light transmissive region 4011 and a second light transmissive region 4012.
  • the second opening 402 of the mask 40 includes adjacent third light transmissive regions 4021 and fourth light transmissive regions 4022.
  • the third opening 403 of the mask 40 includes adjacent fifth light transmissive regions 4031 and sixth light transmissive regions 4032.
  • the fourth opening 404 of the mask 40 includes adjacent seventh light transmissive regions 4041 and eighth light transmissive regions 4042.
  • the mask 40 is further provided with a first baffle 41 , and the first baffle 41 is movable in the first opening 401 to block the first light transmission. Region 4011 or second light transmissive region 4012.
  • the reticle 40 is further provided with a second baffle 42 movable in the second opening 402 to block the third transparent region 4021 or the fourth transparent region 4022.
  • the reticle 40 is further provided with a third baffle 43 , and the third baffle 43 is movable in the third opening 403 to block the fifth transparent region 4031 or the sixth transparent region 4032.
  • the reticle 40 is further provided with a fourth baffle 44, and the fourth baffle 44 is movable in the fourth opening 404 to block the seventh transparent region 4041 or the eighth transparent region 4042.
  • the first baffle 41, the second baffle 42, and the third baffle 43 are movable in the first opening 401, the second opening 402, the third opening 403, and the fourth opening 404, thereby blocking or opening the first transparent area 4011 and the second transparent area 4012 as needed.
  • the third light transmissive region 4021, the fourth light transmissive region 4022, the fifth light transmissive region 4031, the sixth light transmissive region 4032, the seventh light transmissive region 4041, and the eighth light transmissive region 4042 Therefore, when the lower alignment film or the upper alignment film is subjected to exposure alignment, the ultraviolet light emitted from the exposure lamp 60 is transmitted through the corresponding light transmission region to perform a desired exposure alignment operation.
  • the present invention also provides a photo-alignment method, comprising the following steps:
  • step S101 the upper panel 200 and the lower panel 100 are provided.
  • Step S1011 dividing the high gray scale sub-pixel H of the lower layer panel 100 into the first high gray scale sub-pixel region h 1 and the second high gray scale sub-pixel region h 2 adjacent to each other along the long side of the pixel 10
  • the low gray scale sub-pixel L of the lower panel 100 is divided into first low gray sub-pixel regions l 1 and second low gray sub-pixel regions l 2 adjacent to each other along the long side of the pixel 10;
  • Step S1012 the upper panel the high gray sub-pixel is divided into H 200 pixels 10 adjacent to and along the short side arranged sub-pixel region of the first high gradation h 3 and the second high-gray subpixel region h 4
  • the low gray sub-pixel L of the upper panel 200 is divided into a first low gray sub-pixel region l 3 and a second low gray sub-pixel region l 4 adjacent to each other along the short side of the pixel 10;
  • step S1013 the upper panel 200 and the lower panel 100 are vertically disposed to each other.
  • Step S102 providing a mask 40 to block the upper panel 200 and the lower panel 100, and to provide a light transmissive area of the mask 40.
  • This step further includes the following steps:
  • Step S1021 as shown in FIG. 8, the first mask 40 is light-transmissive region template 4011 and the corresponding opening of the lower panel first high gray sub-pixel region 100 is disposed h 1; 40 of the first template mask The baffle 41 blocks the second transparent region 4012 of the first opening 401;
  • Step S1022 as shown in FIG. 9, the third mask 40 and light-transmissive region corresponding to the lower opening 4021 of the first panel region of low gray level sub-pixel set 100 l 1; and the second template mask 40
  • the baffle 42 blocks the fourth transparent region 4022 of the second opening 401;
  • Step S1023, shown in Figure 10 the mask 40 is turned on and the fifth light transmitting region 4031 corresponding to the first sub-pixel high gradation region of the upper panel 200 disposed h 3; the third mask of the template 40 The baffle 43 blocks the sixth transparent region 4032 of the third opening 401;
  • Step S1024 shown in Figure 10, the mask 40 is opened and the seventh light-transmissive region 4041 corresponding to the top panel of the first low gray level sub-pixel region 200 disposed l 3; said fourth mask template 40
  • the baffle 44 blocks the eighth light transmissive area 4042 of the fourth opening 401.
  • step S102 when the mask 40 is provided to perform the mask, the upper panel 200 and the lower panel 100 are moved relative to the mask 40. Thereby, the mask 40 is disposed at an appropriate position between the upper panel 200, the lower panel 100, and the exposure lamp 60. It can be understood that the upper panel 200 and the lower panel 100 can be moved toward the mask 40 when the mask is performed.
  • the upper panel 200 and the lower panel 100 may also be fixed, and the mask 40 may be moved toward the upper panel 200 and the lower panel 100.
  • step S103 the upper alignment film of the upper panel 200 and the lower alignment film of the lower panel 100 are exposed by ultraviolet rays in the first incident direction by the mask 40.
  • the exposure lamp 60 emits ultraviolet rays in a first incident direction, and is incident on the lower layer panel 100 through the first light transmitting region 4011 and the third light transmitting region 4021 of the mask 40; and the exposure lamp 60 is first.
  • the incident direction emits ultraviolet rays, and is incident on the upper panel 200 through the fifth light-transmitting region 4031 and the seventh light-transmitting region 4041 of the mask 40, thereby causing the first high-gray sub-pixel region h 1 of the upper panel 200 a low gray level sub-pixel region. 1 l and the lower region of the first panel of high gray scale subpixel 100 h 3, a first low gray level sub-pixel region having a first l 3 with the ultraviolet ray incidence direction of the film uniform Orientation.
  • step S104 the light transmissive area of the mask 40 is adjusted.
  • This step further includes the following steps:
  • Step S1041 as shown in FIG. 11, the second light-transmitting region 4012 of the mask 40 is opened and corresponding to the second high-gray sub-pixel region h 2 of the lower panel 100; the first of the mask 40 The baffle 41 blocks the first transparent region 4011 of the first opening 401;
  • Step S1042 shown in Figure 12, the mask 40 is turned on and a fourth transmissive region 4022 corresponding to the lower panel of the second low gray level sub-pixel region 100 is disposed l 2; the second template mask 40 The baffle 42 blocks the third transparent region 4021 of the second opening 401;
  • the baffle 43 blocks the fifth transparent region 4031 of the third opening 401;
  • Step S1044 the eighth transparent region 4042 of the mask 40 is opened and corresponding to the second low gray sub-pixel region 14 of the upper panel 200; the fourth shutter 44 of the mask 40 blocks the The seventh light transmitting region 4041 of the fourth opening 401.
  • step S105 the upper alignment film of the upper layer panel 200 and the lower alignment film of the lower layer panel 100 are exposed by ultraviolet rays in the second incident direction by the mask 40.
  • the exposure lamp 60 emits ultraviolet rays in the second incident direction, and is incident on the lower layer panel 100 through the second light transmitting region 4012 and the fourth light transmitting region 4022 of the mask 40, and the exposure lamp 60 is second.
  • the incident direction emits ultraviolet rays through the sixth light-transmitting region 4032 of the mask 40, and the eighth light-transmitting region 4042 is incident on the upper panel 200, so that the second high-gray sub-pixel region h 2 and the second low of the upper panel 200
  • the alignment film of the gray-scale sub-pixel region 12 and the second high-gray sub-pixel region h 4 and the second low-gray sub-pixel region 14 of the lower panel 100 has an alignment force consistent with the second incident direction of the ultraviolet light. .
  • step S105 the alignment is the same as the photo-alignment method in step S103, except for the position where the baffle is disposed and the incident direction of the ultraviolet ray.
  • the upper alignment film of the double-layered upper layer panel 200 and the respective regions of the lower alignment film of the lower layer panel 100 have different alignment forces, that is, a plurality of domains having different alignment directions are formed on one pixel 10.
  • the mask 40 of the present invention and the photo-alignment method using the mask 40 are provided with the movable first shutter 41, the second shutter 42, the third shutter 43, and the fourth shutter 44, so that the mask 40 is provided. It can be reused, thereby reducing the number of lands of the reticle 40 in the process of optical alignment of the alignment film, and reducing the cost.
  • the lower panel 100 and the upper panel 200 are disposed, and the alignment film of the lower panel 100 and the upper panel 200 is simultaneously exposed by the mask 40, and only one exposure of the mask 40 is performed to complete the alignment in the entire liquid crystal display device.
  • the film process effectively reduces the number of exposures and simplifies the manufacturing process.

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

一种光配向方法，包括以下步骤，提供上层面板与下层面板；提供掩模板以遮挡所述上层面板与所述下层面板，并设置所述掩模板的透光区域；利用掩模板以第一入射方向发出紫外线曝光所述上层面板的上层配向膜与所述下层面板的下层配向膜；调整所述掩模板的透光区域；利用掩模板以第二入射方向发出紫外线曝光所述上层面板的上层配向膜与所述下层面板的下层配向膜。其中只需一块掩模板进行两次曝光就可以完成整个液晶显示装置中配向膜的制程，可有效减少曝光次数，简化制造过程。

Description

掩模板、光配向方法及液晶显示装置
本发明要求2014年12月26日递交的发明名称为“掩模板及光配向方法”，申请号201410829680.8的在先申请优先权，上述在先申请的内容以引入的方式并入本文本中。
技术领域
本发明涉及液晶技术领域，尤其涉及一种掩模板、采用该掩膜板对液晶显示装置进行配向的光配向方法及一种液晶显示装置。
背景技术
液晶显示器制造过程中最为广泛运用的配向技术是磨刷配向(Rubbing alignment)法。磨刷配向法可以提供液晶分子较强的配向能力，但是在磨刷的过程中，由于利用绒布接触式的摩擦，因此会产生静电和颗粒(particle)的污染，而这些污染往往直接造成液晶元件的损坏。
现有一种光配向法，利用线性偏极的紫外光照射在具有感光剂的高分子聚合物配向膜上，使得高分子聚合物具有配向能力。其优点为可避免玻璃基板表面的污染、可以进行小面积的配向、透过光罩可作图形的配向，利用入射光的角度与照射时间的长短，可以控制液晶单元的参数，如预倾角、表面定向强度等。
但是通过光配向法在一个像素内的多个区域形成多个同配向方向域，从而提高液晶显示的侧可视度时。在制造过程中，需要设置多个光罩，并相应采用不同方向的入射光进行多次照射配向，制造过程繁琐，制造成本较高。
发明内容
本发明实施例提供一种掩模板及采用该掩膜板对液晶显示装置进行配向的光配向方法。
一种光配向方法，包括以下步骤，
提供上层面板与下层面板；
提供掩模板以遮挡所述上层面板与所述下层面板，并设置所述掩膜板的透光区域；
利用掩模板以第一入射方向发出紫外线曝光所述上层面板的上层配向膜与下层面板的下层配向膜；
调整所述掩膜板的透光区域；
利用掩模板以第二入射方向发出紫外线曝光所述上层面板的上层配向膜与下层面板的下层配向膜。
进一步的，当提供上层面板与下层面板时，进一步包括以下步骤，
将所述下层面板的高灰阶子像素分为相邻且沿像素长边排布的第一高灰阶子像素区域与第二高灰阶子像素区域；将所述下层面板的低灰阶子像素分为相邻且沿像素长边排布的第一低灰阶子像素区域与第二低灰阶子像素区域；
将所述上层面板的高灰阶子像素分为相邻且沿像素短边排布的第一高灰阶子像素区域与第二高灰阶子像素区域；将所述上层面板的低灰阶子像素分为相邻且沿像素短边排布的第一低灰阶子像素区域与第二低灰阶子像素区域；
将所述上层面板与下层面板相互垂直设置。
进一步的，当提供掩模板以遮挡所述上层面板与所述下层面板，并设置所述掩膜板的透光区域时，进一步包括以下步骤，
所述掩模板的第一透光区域开启并对应所述下层面板的第一高灰阶子像素区域设置；所述掩模板的第一挡板遮挡所述第一开口的第二透光区域；
所述掩模板的第三透光区域开启并对应所述下层面板的第一低灰阶子像素区域设置；所述掩模板的第二挡板遮挡所述第二开口的第四透光区域；
所述掩模板的第五透光区域开启并对应所述上层面板的第一高灰阶子像素区域设置；所述掩模板的第三挡板遮挡所述第三开口的第六透光区域；
所述掩模板的第七透光区域开启并对应所述上层面板的第一低灰阶子像素区域设置；所述掩模板的第四挡板遮挡所述第四开口的第八透光区域。
进一步的，当利用掩模板以第一入射方向发出紫外线曝光所述上层面板的上层配向膜与下层面板的下层配向膜时，紫外线以第一入射方向通过掩模板的第一透光区域、第三透光区域入射至所述下层面板；紫外线以第一入射方向通过掩模板的第五透光区域、第七透光区域入射至所述上层面板。
进一步的，当调整所述掩膜板的透光区域时，
进一步包括以下步骤：
所述掩模板的第二透光区域开启并对应所述下层面板的第二高灰阶子像素区域设置；所述掩模板的第一挡板遮挡所述第一开口的第一透光区域；
所述掩模板的第四透光区域开启并对应所述下层面板的第二低灰阶子像素区域设置；所述掩模板的第二挡板遮挡所述第二开口的第三透光区域；
所述掩模板的第六透光区域开启并对应所述上层面板的第二高灰阶子像素区域设置；所述掩模板的第三挡板遮挡所述第三开口的第五透光区域；
所述掩模板的第八透光区域开启并对应所述上层面板的第二低灰阶子像素区域设置；所述掩模板的第四挡板遮挡所述第四开口的第七透光区域。
进一步的，当利用掩模板以第二入射方向发出紫外线曝光所述上层面板的上层配向膜与下层面板的下层配向膜时，紫外线以第一入射方向通过掩模板的第二透光区域、第四透光区域入射至所述下层面板；紫外线以第一入射方向通过掩模板的第六透光区域、第八透光区域入射至所述上层面板。
一种掩膜板，包括遮光板体、形成于遮光板体的第一开口、第二开口、第三开口与第四开口，所述掩模板的第一开口包括相邻的第一透光区域与第二透光区域，所述掩模板的第二开口包括相邻的第三透光区域与第四透光区域，所述掩模板的第三开口包括相邻的第五透光区域与第六透光区域，所述掩模板的第四开口包括相邻的第七透光区域与第八透光区域，所述掩膜板还设有第一挡板、第二挡板、第三挡板、第四挡板，所述第一挡板用于遮挡所述第一透光区域或第二透光区域，所述第二挡板用于遮挡所述第三透光区域或第四透光区域，所述第三挡板用于遮挡所述第五透光区域或第六透光区域，所述第四挡板用于遮挡所述第七透光区域或第八透光区域。
一种液晶显示装置，所述液晶显示装置包括下层面板、上层面板、设置于所述上层面板和下层面板之间液晶层；上层面板包括上层基板及设置于所述上层基板的上层配向膜；下层面板包括下层基板及设置于所述下层基板上的下层配向膜，所述液晶层包括多个液晶分子，所述液晶显示装置的任一像素包括位于上端的高灰阶子像素和位于下端的低灰阶子像素，所述高灰阶子像素和所述低灰阶子像素均被分成4个域，在所述4个相邻域内，所述液晶层的液晶分子 被配向为不同的方向。
进一步的，所述液晶分子与面板的长边或短边的夹角小于45度。
进一步的，所述下层面板的高灰阶子像素分为相邻且沿像素长边排布的第一高灰阶子像素区域与第二高灰阶子像素区域。
进一步的，所述下层面板的低灰阶子像素分为相邻且沿像素长边排布的第一低灰阶子像素区域与第二低灰阶子像素区域。
进一步的，所述上层面板的高灰阶子像素分为相邻且沿像素短边排布的第一高灰阶子像素区域与第二高灰阶子像素区域。
进一步的，所述上层面板的低灰阶子像素分为相邻且沿像素短边排布的第一低灰阶子像素区域与第二低灰阶子像素区域。
本发明的掩模板及采用该掩膜板的光配向方法通过设置可移动的第一挡板、第二挡板、第三挡板、第四挡板，使掩模板可重复使用，从而减少在对配向膜进行光配向的过程中的掩模板的设置数量，降低成本。设置下层面板、上层面板，并利用所述掩模板同时对下层面板、上层面板的配向膜进行曝光，只需一块掩模板进行次曝光就可以完成整个液晶显示装置中配向膜的制程，有效减少曝光次数，简化制造过程。
附图说明
为了更清楚地说明本发明实施例或现有技术中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本发明的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1是本发明所述的液晶显示装置的结构示意图；
图2是图1的液晶显示装置的下层面板的结构示意图；
图3是图1的液晶显示装置的上层面板的结构示意图；
图4是本发明较佳实施方式提供的掩膜板的遮光板体的结构示意图；
图5与图6是本发明较佳实施方式提供的上层面板、下层面板与掩膜板的设置示意图；
图7是本发明较佳实施方式提供的光配向方法的流程图；
图8至图13是本发明较佳实施方式通过掩膜板进行配向时所述掩膜板的各个卡口的剖面示意图。
具体实施方式
下面将结合本发明实施例中的附图，对本发明实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本发明保护的范围。
本发明较佳实施方式提供一种掩模板及采用该掩膜板对液晶显示装置进行配向的光配向方法。
如图1至图3，所述液晶显示装置包括下层面板100、上层面板200、设置于所述上层面板200和下层面板100之间液晶层(图未示)；上层面板200包括上层基板及设置于所述上层基板的上层配向膜(图未示)；下层面板100包括下层基板及设置于所述下层基板上的下层配向膜(图未示)。所述液晶层包括多个液晶分子310。所述掩模板可用于对上层面板及下层面板的配向膜进行曝光。
图1所示为液晶显示装置中一个像素10的布局图，所述液晶显示装置的一个像素10包括位于上端的高灰阶子像素H和位于下端的低灰阶子像素L，所述高灰阶子像素H与低灰阶子像素L沿所述像素长边设置。高灰阶子像素H和低灰阶子像素L均被分成4个域，具有2x2的结构。在4个相邻域内，液晶层的液晶分子被配向为不同的方向；在每个域内，液晶分子310与面板的其中一边(长边或短边)的夹角小于45°。
如图2所示，将下层面板100的高灰阶子像素H和低灰阶子像素L分成左右两部分。其中，将所述下层面板100的高灰阶子像素H分为相邻且沿像素10长边排布的第一高灰阶子像素区域h1与第二高灰阶子像素区域h2，将所述下层面板100的低灰阶子像素L分为相邻且沿像素10长边排布的第一低灰阶子像素区域l1与第二低灰阶子像素区域l2。
液晶显示装置通过下层面板100的下层配向膜对下层面板100的高灰阶子像素H和低灰阶子像素L进行光配向。
如图3所示，将上层面板200的高灰阶子像素H和低灰阶子像素L成左右两部分。其中，将所述上层面板200的高灰阶子像素H分为相邻且沿像素10短边排布的第一高灰阶子像素区域h3与第二高灰阶子像素区域h4，将所述上层面板200的低灰阶子像素L分为相邻且沿像素10短边排布的第一低灰阶子像素区域l3与第二低灰阶子像素区域l4。
液晶显示装置通过上层面板200的上层配向膜对上层面板200的高灰阶子像素H和低灰阶子像素L进行光配向。
通过掩模板40遮挡所述下层面板100或上层面板200，并对所述下层面板100的下层配向膜或上层面板200的上层配向膜进行曝光，使得下层面板100的下层配向膜与上层面板200的上层配向膜具有如图1所示的配向力。
在使用光配向(photo-alignment)法对所述上层配向膜或下层配向膜进行配向时，需通过掩模板40遮挡所述下层面板100或上层面板200，并进行光配向。
如图4所示，本发明提供一种光配向法所需的掩模板40，包括遮光板体400、形成于遮光板体400的第一开口401、第二开口402、第三开口403与第四开口404。所述掩模板40的第一开口401包括相邻的第一透光区域4011与第二透光区域4012。所述掩模板40的第二开口402包括相邻的第三透光区域4021与第四透光区域4022。所述掩模板40的第三开口403包括相邻的第五透光区域4031与第六透光区域4032。所述掩模板40的第四开口404包括相邻的第七透光区域4041与第八透光区域4042。
请一并参见图5及图6，所述掩模板40还设有第一挡板41，所述第一挡板41可于所述第一开口401内移动，从而遮挡所述第一透光区域4011或第二透光区域4012。所述掩模板40还设有第二挡板42，所述第二挡板42可于所述第二开口402内移动，从而遮挡所述第三透光区域4021或第四透光区域4022。所述掩模板40还设有第三挡板43，所述第三挡板43可于所述第三开口403内移动，从而遮挡所述第五透光区域4031或第六透光区域4032。所述掩模板40还设有第四挡板44，所述第四挡板44可于所述第四开口404内移动，从而遮挡所述第七透光区域4041或第八透光区域4042。
使用本发明的掩膜板300时，所述第一挡板41、第二挡板42、第三挡板 43、第四挡板44可分别于第一开口401、第二开口402、第三开口403、第四开口404中移动，从而按需遮挡或开启第一透光区域4011、第二透光区域4012、第三透光区域4021、第四透光区域4022、第五透光区域4031、第六透光区域4032、第七透光区域4041、第八透光区域4042。从而在对下层配向膜或上层配向膜进行曝光配向时，使曝光灯60发出的紫外线透光相应的透光区域以进行所需的曝光配向操作。
如图7所示，本发明还提供一种光配向方法，包括以下步骤：
步骤S101，提供上层面板200与下层面板100。
在本步骤中，进一步包括以下步骤：
步骤S1011，将所述下层面板100的高灰阶子像素H分为相邻且沿像素10长边排布的第一高灰阶子像素区域h1与第二高灰阶子像素区域h2；将所述下层面板100的低灰阶子像素L分为相邻且沿像素10长边排布的第一低灰阶子像素区域l1与第二低灰阶子像素区域l2；
步骤S1012，将所述上层面板200的高灰阶子像素H分为相邻且沿像素10短边排布的第一高灰阶子像素区域h3与第二高灰阶子像素区域h4；将所述上层面板200的低灰阶子像素L分为相邻且沿像素10短边排布的第一低灰阶子像素区域l3与第二低灰阶子像素区域l4；
步骤S1013，将所述上层面板200与下层面板100相互垂直设置。
步骤S102，提供掩模板40以遮挡所述上层面板200与所述下层面板100，并设置所述掩膜板40的透光区域。
本步骤进一步包括以下步骤：
步骤S1021，如图8所示，所述掩模板40的第一透光区域4011开启并对应所述下层面板100的第一高灰阶子像素区域h1设置；所述掩模板40的第一挡板41遮挡所述第一开口401的第二透光区域4012；
步骤S1022，如图9所示，所述掩模板40的第三透光区域4021开启并对应所述下层面板100的第一低灰阶子像素区域l1设置；所述掩模板40的第二挡板42遮挡所述第二开口401的第四透光区域4022；
步骤S1023，如图10所示，所述掩模板40的第五透光区域4031开启并对应所述上层面板200的第一高灰阶子像素区域h3设置；所述掩模板40的第 三挡板43遮挡所述第三开口401的第六透光区域4032；
步骤S1024，如图10所示，所述掩模板40的第七透光区域4041开启并对应所述上层面板200的第一低灰阶子像素区域l3设置；所述掩模板40的第四挡板44遮挡所述第四开口401的第八透光区域4042。
步骤S102中，当提供掩模板40以进行掩模时，所述上层面板200与下层面板100相对于所述掩模板40移动。从而使所述掩模板40设置于所述上层面板200、下层面板100与曝光灯60之间的适当位置。可以理解的是，在进行掩模时，可将所述上层面板200与下层面板100朝向所述掩模板40移动。也可固定所述上层面板200与下层面板100，将所述掩模板40朝向所述上层面板200与下层面板100移动。
步骤S103，利用掩模板40以第一入射方向发出紫外线曝光所述上层面板200的上层配向膜与下层面板100的下层配向膜。
在本步骤中，曝光灯60以第一入射方向发出紫外线，并通过掩模板40的第一透光区域4011、第三透光区域4021入射至所述下层面板100；且曝光灯60以第一入射方向发出紫外线，并通过掩模板40的第五透光区域4031、第七透光区域4041入射至所述上层面板200，从而使上层面板200的第一高灰阶子像素区域h1、第一低灰阶子像素区域l1与下层面板100的第一高灰阶子像素区域h3、第一低灰阶子像素区域l3的配向膜具有与所述紫外线的第一入射方向一致的配向力。可理解的是，所述曝光灯60对所述上层配向膜与下层配向膜的曝光配向原理与现有技术一致，在此不再赘述。
步骤S104，调整所述掩膜板40的透光区域。
本步骤进一步包括以下步骤：
步骤S1041，如图11所示，所述掩模板40的第二透光区域4012开启并对应所述下层面板100的第二高灰阶子像素区域h2设置；所述掩模板40的第一挡板41遮挡所述第一开口401的第一透光区域4011；
步骤S1042，如图12所示，所述掩模板40的第四透光区域4022开启并对应所述下层面板100的第二低灰阶子像素区域l2设置；所述掩模板40的第二挡板42遮挡所述第二开口401的第三透光区域4021；
步骤S1043，如图13所示，所述掩模板40的第六透光区域4032开启并 对应所述上层面板200的第二高灰阶子像素区域h4设置；所述掩模板40的第三挡板43遮挡所述第三开口401的第五透光区域4031；
步骤S1044，所述掩模板40的第八透光区域4042开启并对应所述上层面板200的第二低灰阶子像素区域l4设置；所述掩模板40的第四挡板44遮挡所述第四开口401的第七透光区域4041。
步骤S105，利用掩模板40以第二入射方向发出紫外线曝光所述上层面板200的上层配向膜与下层面板100的下层配向膜。在本步骤中，曝光灯60以第二入射方向发出紫外线，并通过掩模板40的第二透光区域4012、第四透光区域4022入射至所述下层面板100，且曝光灯60以第二入射方向发出紫外线通过掩模板40的第六透光区域4032、第八透光区域4042入射至所述上层面板200，从而使上层面板200的第二高灰阶子像素区域h2、第二低灰阶子像素区域l2与下层面板100的第二高灰阶子像素区域h4、第二低灰阶子像素区域l4的配向膜具有与所述紫外线的第二入射方向一致的配向力。
在步骤S105中，其配向远离与步骤S103中的光配向方法相同，不同之处仅仅在所述挡板的设置位置及紫外线的入射方向。从而使经过两次曝光的上层面板200的上层配向膜和下层面板100的下层配向膜的各个区域具有不同的配向力，即在一个像素10上形成了多个具有不同配向方向的域。
本发明的掩模板40及采用该掩膜板40的光配向方法通过设置可移动的第一挡板41、第二挡板42、第三挡板43、第四挡板44，使掩模板40可重复使用，从而减少在对配向膜进行光配向的过程中的掩模板40的设置数量，降低成本。设置下层面板100、上层面板200，并利用所述掩模板40同时对下层面板100、上层面板200的配向膜进行曝光，只需一块掩模板40进行2次曝光就可以完成整个液晶显示装置中配向膜的制程，有效减少曝光次数，简化制造过程。
以上所揭露的仅为本发明一种较佳实施例而已，当然不能以此来限定本发明之权利范围，本领域普通技术人员可以理解实现上述实施例的全部或部分流程，并依本发明权利要求所作的等同变化，仍属于发明所涵盖的范围。

Claims (13)

  1. 一种光配向方法，其中，包括以下步骤，
    提供上层面板与下层面板；
    提供掩模板以遮挡所述上层面板与所述下层面板，并设置所述掩膜板的透光区域；
    利用掩模板以第一入射方向发出紫外线曝光所述上层面板的上层配向膜与下层面板的下层配向膜；
    调整所述掩膜板的透光区域；
    利用掩模板以第二入射方向发出紫外线曝光所述上层面板的上层配向膜与下层面板的下层配向膜。
  2. 如权利要求1所述的光配向方法，其中，当提供上层面板与下层面板时，进一步包括以下步骤，
    将所述下层面板的高灰阶子像素分为相邻且沿像素长边排布的第一高灰阶子像素区域与第二高灰阶子像素区域；将所述下层面板的低灰阶子像素分为相邻且沿像素长边排布的第一低灰阶子像素区域与第二低灰阶子像素区域；
    将所述上层面板的高灰阶子像素分为相邻且沿像素短边排布的第一高灰阶子像素区域与第二高灰阶子像素区域；将所述上层面板的低灰阶子像素分为相邻且沿像素短边排布的第一低灰阶子像素区域与第二低灰阶子像素区域；
    将所述上层面板与下层面板相互垂直设置。
  3. 如权利要求2所述的光配向方法，其中，当提供掩模板以遮挡所述上层面板与所述下层面板，并设置所述掩膜板的透光区域时，进一步包括以下步骤，
    所述掩模板的第一透光区域开启并对应所述下层面板的第一高灰阶子像素区域设置；所述掩模板的第一挡板遮挡所述第一开口的第二透光区域；
    所述掩模板的第三透光区域开启并对应所述下层面板的第一低灰阶子像素区域设置；所述掩模板的第二挡板遮挡所述第二开口的第四透光区域；
    所述掩模板的第五透光区域开启并对应所述上层面板的第一高灰阶子像素区域设置；所述掩模板的第三挡板遮挡所述第三开口的第六透光区域；
    所述掩模板的第七透光区域开启并对应所述上层面板的第一低灰阶子像素区域设置；所述掩模板的第四挡板遮挡所述第四开口的第八透光区域。
  4. 如权利要求3所述的光配向方法，其中，当利用掩模板以第一入射方向发出紫外线曝光所述上层面板的上层配向膜与下层面板的下层配向膜时，紫外线以第一入射方向通过掩模板的第一透光区域、第三透光区域入射至所述下层面板；紫外线以第一入射方向通过掩模板的第五透光区域、第七透光区域入射至所述上层面板。
  5. 如权利要求4所述的光配向方法，其中，当调整所述掩膜板的透光区域时，
    进一步包括以下步骤：
    所述掩模板的第二透光区域开启并对应所述下层面板的第二高灰阶子像素区域设置；所述掩模板的第一挡板遮挡所述第一开口的第一透光区域；
    所述掩模板的第四透光区域开启并对应所述下层面板的第二低灰阶子像素区域设置；所述掩模板的第二挡板遮挡所述第二开口的第三透光区域；
    所述掩模板的第六透光区域开启并对应所述上层面板的第二高灰阶子像素区域设置；所述掩模板的第三挡板遮挡所述第三开口的第五透光区域；
    所述掩模板的第八透光区域开启并对应所述上层面板的第二低灰阶子像素区域设置；所述掩模板的第四挡板遮挡所述第四开口的第七透光区域。
  6. 如权利要求5所述的光配向方法，其中，当利用掩模板以第二入射方向发出紫外线曝光所述上层面板的上层配向膜与下层面板的下层配向膜时，紫外线以第一入射方向通过掩模板的第二透光区域、第四透光区域入射至所述下层面板；紫外线以第一入射方向通过掩模板的第六透光区域、第八透光区域入射至所述上层面板。
  7. 一种掩膜板，其中，包括遮光板体、形成于遮光板体的第一开口、第二开口、第三开口与第四开口，所述掩模板的第一开口包括相邻的第一透光区域与第二透光区域，所述掩模板的第二开口包括相邻的第三透光区域与第四透光区域，所述掩模板的第三开口包括相邻的第五透光区域与第六透光区域，所述掩模板的第四开口包括相邻的第七透光区域与第八透光区域，所述掩膜板还设有第一挡板、第二挡板、第三挡板、第四挡板，所述第一挡板用于遮挡所述 第一透光区域或第二透光区域，所述第二挡板用于遮挡所述第三透光区域或第四透光区域，所述第三挡板用于遮挡所述第五透光区域或第六透光区域，所述第四挡板用于遮挡所述第七透光区域或第八透光区域。
  8. 一种液晶显示装置，其中，所述液晶显示装置包括下层面板、上层面板、设置于所述上层面板和下层面板之间液晶层；上层面板包括上层基板及设置于所述上层基板的上层配向膜；下层面板包括下层基板及设置于所述下层基板上的下层配向膜，所述液晶层包括多个液晶分子，所述液晶显示装置的任一像素包括位于上端的高灰阶子像素和位于下端的低灰阶子像素，所述高灰阶子像素和所述低灰阶子像素均被分成4个域，在所述4个相邻域内，所述液晶层的液晶分子被配向为不同的方向。
  9. 如权利要求8所述的液晶显示装置，其中，所述液晶分子与面板的长边或短边的夹角小于45度。
  10. 如权利要求8所述的液晶显示装置，其中，所述下层面板的高灰阶子像素分为相邻且沿像素长边排布的第一高灰阶子像素区域与第二高灰阶子像素区域。
  11. 如权利要求8所述的液晶显示装置，其中，所述下层面板的低灰阶子像素分为相邻且沿像素长边排布的第一低灰阶子像素区域与第二低灰阶子像素区域。
  12. 如权利要求8所述的液晶显示装置，其中，所述上层面板的高灰阶子像素分为相邻且沿像素短边排布的第一高灰阶子像素区域与第二高灰阶子像素区域。
  13. 如权利要求8所述的液晶显示装置，其中，所述上层面板的低灰阶子像素分为相邻且沿像素短边排布的第一低灰阶子像素区域与第二低灰阶子像素区域。
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