CN107357089B - Liquid crystal display panel and photo-alignment method - Google Patents
Liquid crystal display panel and photo-alignment method Download PDFInfo
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- CN107357089B CN107357089B CN201710802340.XA CN201710802340A CN107357089B CN 107357089 B CN107357089 B CN 107357089B CN 201710802340 A CN201710802340 A CN 201710802340A CN 107357089 B CN107357089 B CN 107357089B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 82
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000000758 substrate Substances 0.000 claims abstract description 69
- 239000003086 colorant Substances 0.000 claims abstract description 11
- 230000001678 irradiating effect Effects 0.000 claims description 13
- 238000002834 transmittance Methods 0.000 abstract description 3
- 230000008569 process Effects 0.000 description 6
- 210000004027 cell Anatomy 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000035515 penetration Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 210000002858 crystal cell Anatomy 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
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- 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
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Abstract
The invention discloses a liquid crystal display panel and a photo-alignment method, wherein the liquid crystal display panel comprises a first substrate, a second substrate, a first alignment layer, a second alignment layer and liquid crystals, the first substrate is divided into a plurality of first areas which are adjacent in pairs, the second substrate is divided into a plurality of second areas which are respectively opposite to the first areas, the alignment directions of liquid crystal molecules of the first areas and the second areas opposite to the first areas are mutually vertical, and the alignment direction of the liquid crystal molecules of each first area and the corresponding second area is respectively the same as the alignment direction of the liquid crystal molecules of the other first area and the corresponding second area; the first substrate is provided with pixel units in an array mode, each pixel unit comprises sub-pixels of multiple colors, and the alignment directions of liquid crystal molecules in corresponding areas of the sub-pixels of the same color are the same. In the liquid crystal display panel, the sub-pixels with the same color can obtain the same transmittance, thereby solving the grid-shaped display difference encountered at present and improving the image quality.
Description
Technical Field
The invention relates to a liquid crystal alignment technology, in particular to a liquid crystal display panel and a photo-alignment method.
Background
Compared with the common rubbing alignment (rubbing) process, the LCD (Liquid Crystal Display) photo-alignment technology has the advantages of non-contact alignment, namely no need of contacting a PI (Polyimide) film layer, and has the characteristics of higher reliability and no pollution. The main stream of photo-Alignment of VA (Vertical Alignment) type LCDs is to tilt the liquid crystal in a desired direction by means of "UV curing + electrification". The new UVVA (UltraViolet Vertical Alignment) photo-Alignment technology adopts polarized UV light irradiation, omits the power-up process, does not need ITO electrode patterning, and can further simplify Alignment steps and design schemes.
In the UVVA alignment mode, the same sub-pixel (sub-pixel) is divided into 4 regions (domains), and the alignment directions of the regions are different, so as to obtain a larger viewing angle, however, a black line perpendicular to each other is formed in each sub-pixel, that is, a liquid crystal dark fringe occurs between the 4 regions, which affects the improvement of the transmittance T%, so that a design mode of 1 region is provided, so that the liquid crystal alignment of one sub-pixel is only performed in one direction, and thus, the adjacent sub-pixels form 4 regions, and the liquid crystal dark fringe between the regions can be hidden in a Black Matrix (BM) shielding region at the boundary position of the sub-pixels, thereby improving the penetration efficiency of the liquid crystal panel.
In the experimental process, it is found that because a 4-region mode formed by adjacent sub-pixels is adopted to solve color cast, and because the liquid crystal inversion of the adjacent sub-pixels presents a 4-region mode, the liquid crystal inversion of the sub-pixels with the same color has certain regularity, and when a monochrome picture is displayed, such as a red picture, the liquid crystal inversion of two adjacent red sub-pixels is different. In the alignment mode of dividing the same sub-pixel into 4 regions, the adjacent regions are very close, so that the human eye is difficult to distinguish the difference of the liquid crystal inversion, and the difference of brightness and darkness of a single sub-pixel is not obvious, but in the design mode of 1 region, the distance of each region is far, so that the human eye can distinguish the difference of brightness and darkness, and the grid-shaped image quality is caused.
Disclosure of Invention
In view of the shortcomings of the prior art, the present invention provides a liquid crystal display panel and a photo-alignment method that can achieve both transmission efficiency and avoid the appearance of grid-like image quality.
In order to achieve the purpose, the invention adopts the following technical scheme:
a liquid crystal display panel comprises a first substrate, a second substrate, a first alignment layer, a second alignment layer and liquid crystal arranged between the first substrate and the second substrate, wherein the first alignment layer and the second alignment layer are respectively arranged on the inner surfaces of the first substrate and the second substrate; the first alignment layer and the second alignment layer define the alignment direction of liquid crystal molecules after being respectively illuminated; the first substrate is divided into a plurality of first areas which are adjacent in pairs, the second substrate is divided into a plurality of second areas which are opposite to the first areas respectively, the alignment directions of liquid crystal molecules of the first areas and the second areas opposite to the first areas are vertical to each other, and the alignment direction of the liquid crystal molecules of any one first area and the second area opposite to the first area is the same as the alignment direction of the liquid crystal molecules of the other first area and the second area opposite to the first area; the first substrate is provided with a plurality of pixel units in an array mode, each pixel unit comprises sub-pixels of multiple colors, and the liquid crystal molecules in the corresponding areas of the sub-pixels of the same color in the first area are identical in alignment direction.
In one embodiment, the second substrate has opposite alignment directions of liquid crystal molecules in corresponding regions of two adjacent rows of the pixel units.
As an implementation manner, two pixel units are arranged in each first area, each pixel unit in the first area is composed of a plurality of sub-pixels with different colors, and each sub-pixel of one pixel unit is directly opposite to each sub-pixel of the other pixel unit.
In one embodiment, the color arrangement order of the sub-pixels of the two pixel units in the first region is the same, and the sub-pixels of one pixel unit are respectively directly opposite to the sub-pixels of the corresponding color of the other pixel unit.
In one embodiment, in the pixel unit of each first region, the alignment directions of the liquid crystal molecules of two adjacent sub-pixel corresponding regions are the same, and the alignment direction of the liquid crystal molecules of one sub-pixel corresponding region is opposite to the alignment direction of the liquid crystal molecules of the two adjacent sub-pixel corresponding regions.
Another object of the present invention is to provide a photo-alignment method, comprising:
providing a first substrate with a pixel unit array, and forming a first alignment layer thereon;
irradiating ultraviolet light to the first alignment layer for alignment, wherein the first substrate is divided into a plurality of first areas which are adjacent in pairs, each pixel unit comprises sub-pixels with multiple colors, and the alignment directions of the corresponding areas of the sub-pixels with the same color in all the first areas are the same;
providing a second substrate, and forming a second alignment layer thereon, wherein the second substrate is divided into a plurality of second regions corresponding to one of the first regions, respectively;
irradiating ultraviolet light to the second alignment layer for alignment, so that the alignment directions of the liquid crystal molecules of the first region and the second region opposite to the first region are vertical to each other, and the alignment direction of any one first region and the alignment direction of the second region corresponding to the first region are respectively the same as the alignment direction of the other first region and the alignment direction of the second region corresponding to the first region;
and dripping liquid crystal on the second substrate, and assembling the second substrate and the first substrate.
As an implementation manner, two pixel units are arranged in each first area, each pixel unit in the first area is composed of a plurality of sub-pixels with different colors, and each sub-pixel of one pixel unit is directly opposite to each sub-pixel of the other pixel unit.
As one embodiment, when the first alignment layer is irradiated with ultraviolet light for alignment, first blocking a region corresponding to a first part of sub-pixels in each first region, and irradiating regions corresponding to the remaining second part of sub-pixels for primary alignment; and then shielding the region corresponding to the second part of sub-pixels, and irradiating the region corresponding to the first part of sub-pixels for alignment again, wherein the alignment direction is opposite to the primary alignment direction.
As one embodiment, when the second alignment layer is irradiated with ultraviolet light for alignment, first blocking a region corresponding to a first row of pixel units in each second region, and irradiating a region corresponding to a second row of pixel units in the second region for primary alignment; and then shielding the region corresponding to the second row of pixel units, and irradiating the region corresponding to the first row of pixel units for alignment again, wherein the alignment direction is opposite to the primary alignment direction.
In one embodiment, the color arrangement order of the sub-pixels of the two pixel units in the first region is the same, and the sub-pixels of one pixel unit are respectively directly opposite to the sub-pixels of the corresponding color of the other pixel unit.
The alignment directions of the liquid crystal molecules in the corresponding areas of the sub-pixels with the same color on the first substrate of the pixel unit with the array are the same, so that the sub-pixels with the same color can obtain the same penetration rate, the grid-shaped display difference encountered at present is solved, and the image quality is improved.
Drawings
FIG. 1 is a schematic structural diagram of an LCD panel according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a photo-alignment process of an LCD panel according to an embodiment of the present invention;
FIG. 3 is a schematic view illustrating another photo-alignment process of the LCD panel according to the embodiment of the invention;
FIG. 4 is a schematic diagram of a photo-alignment method according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, the liquid crystal display panel of the embodiment of the invention includes a first substrate 1, a second substrate 2, a first alignment layer 3, a second alignment layer 4 and a liquid crystal 5, wherein the liquid crystal 5 is located between the first substrate 1 and the second substrate 2, and the first alignment layer 3 and the second alignment layer 4 are respectively disposed on the inner surfaces of the first substrate 1 and the second substrate 2, and are used for respectively defining alignment directions of two opposite sides of a liquid crystal molecule after being illuminated. As shown in fig. 2, here, the alignment direction of the first alignment layer 3 to the liquid crystal molecules and the alignment direction of the second alignment layer 4 to the liquid crystal molecules are perpendicular to each other, the alignment direction of the first alignment layer 3 to the liquid crystal molecules is along the width direction of the display panel (i.e., the short side direction, the longitudinal direction shown in fig. 2), and the alignment direction of the second alignment layer 4 to the liquid crystal molecules is along the length direction of the display panel (i.e., the long side direction, the transverse direction shown in fig. 2).
The first substrate 1 is an array substrate, the second substrate 2 is a color film substrate, a plurality of pixel units are arranged on the first substrate 1 in an array manner, each pixel unit includes sub-pixels with a plurality of different colors, and this embodiment is described by taking an example that each pixel unit is composed of R, G, B sub-pixels. The arrangement mode of the sub-pixels in each pixel unit is the same, and the arrangement direction of the R, G, B sub-pixels in each pixel unit is consistent with the length direction of the display panelThe plurality of pixel units are arranged in a row in the longitudinal direction, e.g., the upper first pixel (R1)a、G1a、B1a) And an upper row second pixel (R2)a、G2a、B2a) And an upper row third pixel (R3)a、G3a、B3a) And an upper row fourth pixel (R4)a、G4a、B4a) Arranged in sequence laterally, the first pixel (R1) of the lower rowb、G1b、B1b) And a lower row of second pixels (R2)b、G2b、B2b) A lower row of third pixels (R3)b、G3b、B3b) And a lower row of fourth pixels (R4)b、G4b、B4b) Are sequentially and transversely arranged; in the width direction of the display panel, a plurality of pixel units are arranged in a line, e.g., an upper-row first pixel (R1)a、G1a、B1a) And a lower row of first pixels (R1)b、G1b、B1b) Sequentially arranged longitudinally and upper row of second pixels (R2)a、G2a、B2a) And a lower row of second pixels (R2)b、G2b、B2b) Sequentially arranged longitudinally and upper row of third pixels (R3)a、G3a、B3a) A lower row of third pixels (R3)b、G3b、B3b) Sequentially arranged longitudinally and upper row of fourth pixels (R2)a、G2a、B2a) And a lower row of fourth pixels (R4)b、G4b、B4b) Are sequentially and longitudinally arranged.
In the alignment process, the first substrate 1 is divided into a plurality of first areas a adjacent to each other in pairs, the second substrate 2 is divided into a plurality of second areas B opposite to the first areas a respectively, namely, each first area a is opposite to one second area B respectively, the alignment directions of liquid crystal molecules of the first areas a and the second areas B opposite to the first areas a are perpendicular to each other, finally, each display area C on the display panel is opposite to one first area a and one second area B respectively, and the inclination angle of the liquid crystal molecules corresponding to the display area C is formed by the alignment action of the liquid crystal molecules of the first areas a and the second areas B opposite to the first areas a.
Here, two pixel units are disposed in each first area a, each pixel unit in the first area a is composed of a plurality of sub-pixels with different colors, and each sub-pixel of one pixel unit is directly opposite to each sub-pixel of another pixel unit, that is, the two pixel units in the first area a are located in the same column. The arrangement mode of the sub-pixels in each pixel unit is the same, so that the color arrangement sequence of the sub-pixels of the two pixel units in the first area A is the same, and the sub-pixel of one pixel unit is respectively opposite to the sub-pixel of the corresponding color of the other pixel unit.
The alignment directions of the liquid crystal molecules in any one of the first regions a and the second region B opposite thereto are the same as the alignment directions of the liquid crystal molecules in another one of the first regions a and the second region B opposite thereto, so that the tilt conditions of the liquid crystal molecules in any two of the display regions C are the same, and the arrangement modes of the sub-pixels in each of the first regions a are completely the same, so that the alignment directions of the liquid crystal molecules in the sub-pixel corresponding regions of the same color in all the first regions a of the first substrate 1 are the same.
Correspondingly, on the second substrate 2 side of the present embodiment, the alignment directions of the liquid crystal molecules in the corresponding regions of two adjacent rows of pixel units are opposite, and finally, in every two display regions C, the sub-pixels of the same color have the same alignment, as shown in fig. 2, the red sub-pixel R1 of the first pixel on the upper row has the same alignmentaAnd the red sub-pixel R2 of the upper second pixelaRed sub-pixel R3 of upper row third pixelaAnd a red sub-pixel R4 of the upper row fourth pixelaAre the same, the red sub-pixel R1 of the first pixel in the lower rowbRed sub-pixel R2 of the lower row of second pixelsbRed sub-pixel R3 of the third pixel in the lower rowbRed sub-pixel R4 of the fourth pixel in the lower rowbThe alignment is the same; green sub-pixel G1 of upper row first pixelaAnd green sub-pixel G2 of upper second pixelaGreen sub-pixel G3 of upper row third pixelaGreen sub-pixel G4 of upper row fourth pixelaAre the same, the green sub-pixel G1 of the first pixel in the lower rowbGreen sub-pixel G2 of the lower row of second pixelsbGreen sub-pixel G3 of the third pixel in the lower rowbGreen sub-pixel G4 of the fourth pixel in the lower rowbThe alignment is the same; blue sub-pixel B1 of upper row first pixelaAnd blue sub-pixel B2 of upper-row second pixelaBlue sub-pixel B3 of upper row third pixelaBlue sub-pixel B4 of upper row fourth pixelaAre the same, the blue sub-pixel B1 of the lower row first pixelbBlue sub-pixel B2 of the lower row of second pixelsbBlue sub-pixel B3 of the third pixel in the lower rowbBlue sub-pixel B4 of the fourth pixel in the lower rowbThe alignment is the same. The sub-pixels in the same row and the same color have the same alignment and thus have the same transmittance, so that when the display panel displays a pure color picture, the adjacent display areas do not have a lattice-shaped display effect, and the display image quality is improved.
As shown in fig. 2 and 3, in each pixel unit of the first region a of the present embodiment, the alignment directions of the liquid crystal molecules in the corresponding regions of two adjacent sub-pixels G, B are the same, and the alignment direction of the liquid crystal molecules in the corresponding region of the other sub-pixel R is opposite to the alignment direction of the liquid crystal molecules in the corresponding region of the sub-pixel G, B. In fig. 2 and 3, the inner surfaces of the first substrate 1 and the second substrate 2 are respectively disposed upward, and after the first substrate 1 side and the second substrate 2 side are respectively aligned, the first substrate 1 is turned over so that the inner surface faces the second substrate 2, and the two substrates are assembled to form a liquid crystal cell. Fig. 2 shows that the alignment direction of the liquid crystal of the region corresponding to the sub-pixel R in the first region a is the alignment direction from the lower row of the sub-pixels R toward the upper row of the sub-pixels R (i.e., the bottom-up direction in fig. 2), and the alignment direction of the liquid crystal of the region corresponding to the sub-pixel G, B in the first region a is opposite thereto (i.e., the top-down direction in fig. 2); in fig. 3, the alignment direction of the liquid crystal in the region corresponding to the sub-pixel R in the first region a is from top to bottom, and the alignment direction of the liquid crystal in the region corresponding to the sub-pixel G, B is from bottom to top.
As shown in fig. 4, the present invention further provides a photo-alignment method, which mainly includes:
s01, providing the first substrate 1 having the pixel cell array, and forming the first alignment layer 3 thereon. The first substrate 1 is divided into a plurality of first regions a adjacent to each other, and each pixel unit includes sub-pixels of a plurality of colors, such as R, G, B.
S02, the first alignment layer 3 is irradiated with ultraviolet light to align the sub-pixels, and the alignment directions of the sub-pixels corresponding to the same color in all the first regions a are the same. As shown in fig. 2 and 3, the red sub-pixel R1 in the first region aa、R1b、R2a、R2b、R3a、R3b、R4b、R4bThe alignment directions of the corresponding regions are the same, and the green sub-pixel G1 in the first region Aa、G1b、G2a、G2b、G3a、G3b、G4b、G4bThe alignment directions of the corresponding regions are the same, and the blue sub-pixel B1a、B1b、B2a、B2b、B3a、B3b、B4b、B4bThe alignment directions of the corresponding regions are the same, and the alignment directions of the red sub-pixel, the green sub-pixel and the blue sub-pixel are opposite.
When the first alignment layer 3 is irradiated with ultraviolet light for alignment, firstly, a mask is used for shielding the area corresponding to the first part of sub-pixels in each first area A, and the areas corresponding to the rest second part of sub-pixels are irradiated for primary alignment; and then, shielding the area corresponding to the second part of sub-pixels of each first area A by using a mask, and irradiating the area corresponding to the first part of sub-pixels for alignment again, wherein the alignment direction is opposite to the primary alignment direction. For example, the region of the sub-pixel R in the first region a is first shielded, the region of the sub-pixel G, B in the first region a is irradiated with the ultraviolet light for alignment, and then the region of the sub-pixel G, B in the first region a is shielded, and the region of the sub-pixel R in the first region a is irradiated with the ultraviolet light for alignment in the opposite direction.
S03, providing a second substrate 2, and forming a second alignment layer 4 thereon, wherein the second substrate 2 is divided into a plurality of second regions B corresponding to one of the first regions a, respectively.
S04, irradiating the second alignment layer 4 with ultraviolet light to align the first regions a and the second regions B opposite to the first regions a, such that the alignment directions of the liquid crystal molecules in the first regions a and the second regions B are perpendicular to each other, and the alignment directions of any one of the first regions a and the second region B corresponding to the first region a are the same as the alignment directions of the other one of the first regions a and the second region B corresponding to the first region a.
When the second alignment layer 4 is irradiated with ultraviolet light for alignment, firstly, the area corresponding to the first row of pixel units in each second area B is shielded, and the area corresponding to the second row of pixel units in the second area B is irradiated for primary alignment; and then shielding the area corresponding to the second row of pixel units, irradiating the area corresponding to the first row of pixel units for alignment again, wherein the alignment direction of the second row of pixel units is opposite to the primary alignment direction. For example, the upper row of pixel cells in the second region B is first shielded (R1)b、G1b、B1b)、(R2b、G2b、B2b)、(R3b、G3b、B3b)、(R4b、G4b、B4b) Corresponding region, for the pixel unit (R1) at lower rowa、G1a、B1a)、(R2a、G2a、B2a)、(R3a、G3a、B3a)、(R4a、G4a、B4a) The corresponding region is irradiated with ultraviolet light to align (the alignment direction is towards the right direction as shown in fig. 2 and 3), and then the lower row of pixel cells in the second region B is shielded (R1)a、G1a、B1a)、(R2a、G2a、B2a)、(R3a、G3a、B3a)、(R4a、G4a、B4a) Corresponding region, for the upper row of pixel units (R1)b、G1b、B1b)、(R2b、G2b、B2b)、(R3b、G3b、B3b)、(R4b、G4b、B4b) The corresponding region is irradiated with ultraviolet light to perform alignment in the opposite direction (the alignment direction is in the left direction as shown in fig. 2 and 3).
S05, the liquid crystal 5 is dropped on the second substrate 2 and assembled with the first substrate 1 to produce a liquid crystal cell.
It should be noted that two pixel units are disposed in each first area a of the present embodiment, each pixel unit in the first area a is composed of a plurality of sub-pixels with different colors, and each sub-pixel of one pixel unit is directly opposite to each sub-pixel of another pixel unit. Specifically, the color arrangement sequence of the sub-pixels of the two pixel units in the first area a is the same, and the sub-pixel of one pixel unit is directly opposite to the sub-pixel of the corresponding color of the other pixel unit. Two sub-pixels are arranged between every two rows of sub-pixels with the same color along the length direction of the display panel at intervals, and the sub-pixels with the same color have the same alignment in the two adjacent display areas C.
The alignment directions of the liquid crystal molecules in the corresponding areas of the sub-pixels with the same color on the first substrate of the pixel unit with the array are the same, so that the sub-pixels with the same color can obtain the same penetration rate, the display difference of lattice-shaped uneven brightness at present is solved, and the display image quality is improved.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (5)
1. The liquid crystal display panel is characterized by comprising a first substrate (1), a second substrate (2), a first alignment layer (3), a second alignment layer (4) and liquid crystal (5) arranged between the first substrate (1) and the second substrate (2), wherein the first alignment layer (3) and the second alignment layer (4) are respectively arranged on the inner surfaces of the first substrate (1) and the second substrate (2); the first alignment layer (3) and the second alignment layer (4) define the alignment direction of liquid crystal molecules after being illuminated respectively; the first substrate (1) is divided into a plurality of first areas (A) adjacent to each other in pairs, the second substrate (2) is divided into a plurality of second areas (B) opposite to the first areas (A) respectively, the alignment directions of liquid crystal molecules of the first areas (A) and the second areas (B) opposite to the first areas (A) are perpendicular to each other, and the alignment directions of liquid crystal molecules of any one of the first areas (A) and the second areas (B) opposite to the first areas (A) are the same as the alignment directions of liquid crystal molecules of the other first areas (A) and the second areas (B) opposite to the first areas (A) respectively; a plurality of pixel units are arranged on the first substrate (1) in an array mode, each pixel unit is composed of a plurality of sub-pixels with different colors, and the liquid crystal molecules in the regions corresponding to the sub-pixels with the same color in all the first regions (A) are identical in alignment direction; the color arrangement sequence of the sub-pixels in each pixel unit is the same, the arrangement direction of the sub-pixels is consistent with the length direction of the display panel, the pixel units are arranged in a row in the width direction of the display panel, two pixel units in the same row are arranged in each first area (A), and the sub-pixels of one pixel unit are respectively opposite to the sub-pixels of the corresponding color of the other pixel unit; in the pixel unit of each first region (a), the alignment directions of the liquid crystal molecules of two adjacent sub-pixel corresponding regions are the same, and the alignment direction of the liquid crystal molecules of one sub-pixel corresponding region is opposite to the alignment directions of the liquid crystal molecules of the two adjacent sub-pixel corresponding regions.
2. The liquid crystal display panel according to claim 1, wherein the alignment directions of the liquid crystal molecules in the corresponding regions of two adjacent rows of the pixel units on the second substrate (2) side are opposite.
3. A method of photoalignment, comprising:
providing a first substrate (1) having an array of pixel cells and forming a first alignment layer (3) thereon;
irradiating ultraviolet light to the first alignment layer (3) for alignment, wherein the first substrate (1) is divided into a plurality of first areas (A) which are adjacent to each other in pairs, each pixel unit consists of a plurality of sub-pixels with different colors, two pixel units are arranged in each first area (A), the color arrangement sequence of the sub-pixels of the two pixel units in the first area (A) is the same, the arrangement direction of the sub-pixels is consistent with the length direction of the display panel, the pixel units are arranged in a row in the width direction of the display panel, the two pixel units in each first area (A) are positioned in the same row, the sub-pixel of one pixel unit in the first area (A) is respectively opposite to the sub-pixel with the corresponding color of the other pixel unit, and the alignment directions of the sub-pixel corresponding regions of the same color in all the first regions (A) are the same; in the pixel unit of each first region (a), the alignment directions of the liquid crystal molecules of two adjacent sub-pixel corresponding regions are the same, and the alignment direction of the liquid crystal molecules of one sub-pixel corresponding region is opposite to the alignment directions of the liquid crystal molecules of the two adjacent sub-pixel corresponding regions;
providing a second substrate (2) and forming a second alignment layer (4) thereon, wherein the second substrate (2) is divided into a plurality of second regions (B) corresponding to one of the first regions (A), respectively;
irradiating ultraviolet light to the second alignment layer (4) for alignment, so that the alignment directions of the liquid crystal molecules of the first region (A) and the second region (B) opposite to the first region (A) are vertical to each other, and the alignment directions of any one first region (A) and the second region (B) corresponding to the first region (A) are respectively the same as the alignment directions of the other first region (A) and the second region (B) corresponding to the first region (A);
and dripping liquid crystal (5) on the second substrate (2) and assembling the second substrate and the first substrate (1).
4. A photoalignment method according to claim 3, wherein when the first alignment layer (3) is irradiated with ultraviolet light for alignment, the region corresponding to the first portion of sub-pixels in each first region (a) is first shielded, and the regions corresponding to the remaining second portion of sub-pixels are irradiated for primary alignment; and then shielding the region corresponding to the second part of sub-pixels, and irradiating the region corresponding to the first part of sub-pixels for alignment again, wherein the alignment direction is opposite to the primary alignment direction.
5. A photoalignment method according to claim 3, wherein, when the second alignment layer (4) is irradiated with ultraviolet light for alignment, the region corresponding to the first row of pixel units in each second region (B) is first shielded, and the region corresponding to the second row of pixel units in the second region (B) is irradiated for primary alignment; and then shielding the region corresponding to the second row of pixel units, and irradiating the region corresponding to the first row of pixel units for alignment again, wherein the alignment direction is opposite to the primary alignment direction.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101322067A (en) * | 2005-12-02 | 2008-12-10 | 夏普株式会社 | Production method of liquid crystal display and exposure device for alignment treatment |
| CN102077134A (en) * | 2008-06-27 | 2011-05-25 | 夏普株式会社 | Liquid crystal display device and manufacturing method therefor |
| CN104238195A (en) * | 2014-09-29 | 2014-12-24 | 南京中电熊猫液晶显示科技有限公司 | Orientation method of liquid crystal VA (Vertical Alignment) mode |
| US9007552B2 (en) * | 2010-06-23 | 2015-04-14 | Sharp Kabushiki Kaisha | Liquid crystal display device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100601454B1 (en) * | 2000-10-04 | 2006-07-14 | 엘지.필립스 엘시디 주식회사 | Multi-domain liquid crystal display and method for manufacturing thereof |
| JP5203601B2 (en) * | 2006-12-08 | 2013-06-05 | シャープ株式会社 | Liquid crystal display device and manufacturing method thereof |
| KR101612480B1 (en) * | 2008-12-22 | 2016-04-27 | 삼성디스플레이 주식회사 | Alignment substrate for aligning liquid crystal molecules, liquid crystal display panel having the same and method of manufacturing the alignment substrate |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101322067A (en) * | 2005-12-02 | 2008-12-10 | 夏普株式会社 | Production method of liquid crystal display and exposure device for alignment treatment |
| CN102077134A (en) * | 2008-06-27 | 2011-05-25 | 夏普株式会社 | Liquid crystal display device and manufacturing method therefor |
| US9007552B2 (en) * | 2010-06-23 | 2015-04-14 | Sharp Kabushiki Kaisha | Liquid crystal display device |
| CN104238195A (en) * | 2014-09-29 | 2014-12-24 | 南京中电熊猫液晶显示科技有限公司 | Orientation method of liquid crystal VA (Vertical Alignment) mode |
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