CN107329329B - Liquid crystal display panel and UV thereof2A alignment method - Google Patents
Liquid crystal display panel and UV thereof2A alignment method Download PDFInfo
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- CN107329329B CN107329329B CN201710726150.4A CN201710726150A CN107329329B CN 107329329 B CN107329329 B CN 107329329B CN 201710726150 A CN201710726150 A CN 201710726150A CN 107329329 B CN107329329 B CN 107329329B
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 87
- 238000000034 method Methods 0.000 title claims abstract description 31
- 239000003086 colorant Substances 0.000 claims description 24
- 230000035515 penetration Effects 0.000 description 8
- 239000000758 substrate Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000002834 transmittance Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 239000010408 film Substances 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000059 patterning Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
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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
- G02F1/1337—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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- 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
- G02F1/133742—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers for homeotropic alignment
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- Nonlinear Science (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Liquid Crystal (AREA)
Abstract
The invention provides a liquid crystal display panel and UV thereof2A alignment method. The liquid crystal display panel adopts UV2The alignment process A carries out alignment and comprises the following steps: a plurality of pixel units arranged in an array, each pixel unit comprising: the pixel structure comprises a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are sequentially arranged along the row direction; the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are respectively provided with an alignment region, the alignment directions of the alignment regions corresponding to the two adjacent sub-pixels are vertical to each other, and the alignment directions of the alignment regions corresponding to the sub-pixels which are positioned in the same row and have the same color are the same; by adding a fourth sub-pixel to pass UV2And the alignment directions of the alignment areas corresponding to the sub-pixels in the same row and the same color in the liquid crystal display panel obtained by the alignment A are the same, so that the display picture is prevented from having lattice-shaped uneven brightness, and the display quality is improved.
Description
Technical Field
The invention relates to the technical field of display, in particular to a liquid crystal display panel and UV (ultraviolet) thereof2A alignment method.
Background
Liquid Crystal Displays (LCDs) have many advantages such as thin body, power saving, and low radiation, and are widely used, for example, in Liquid Crystal televisions, mobile phones, personal digital assistants, digital cameras, computer screens, and notebook computer screens.
Most of the existing liquid crystal displays are backlight liquid crystal displays, which include a housing, a liquid crystal display panel disposed in the housing, and a backlight module disposed in the housing. Generally, a Liquid Crystal display panel is composed of a Color Filter (CF) Substrate, a Thin Film Transistor Array (TFT Array) Substrate, and a Liquid Crystal Layer (Liquid Crystal Layer) filled between the two substrates, and the operating principle of the Liquid Crystal display panel is to apply a driving voltage to the CF Substrate and the TFT Substrate to control the rotation of Liquid Crystal molecules in the Liquid Crystal Layer, control the output of light, and refract the light of a backlight module to generate a picture.
As for the TFT-LCD liquid crystal display panel currently on the mainstream market, the following can be classified: a Vertical Alignment (VA) type, a Twisted Nematic (TN) or Super Twisted Nematic (STN) type, an In-Plane Switching (IPS) type, and a Fringe Field Switching (FFS) type. In the manufacturing process of the liquid crystal display panel, alignment of the guide film is an important process, and the alignment process is used for realizing the arrangement of liquid crystal molecules according to a specific direction and an angle. The conventional alignment process adopts a Rubbing (Rubbing) method, can align in only one horizontal direction, and is widely adopted by TN-type and IPS-type liquid crystal display panels. However, in the VA-type liquid crystal display panel, since it is necessary to widen the viewing angle and to divide the sub-pixels into a plurality of regions, the alignment direction is different in each region, and therefore, the rubbing method is not generally used, but the photo-alignment method is used.
Currently, the mainstream of the photoalignment of the VA-type liquid crystal display panel is to apply an electric field on the liquid crystal display panel while employing an ultraviolet curing (UV curing) method to cause the liquid crystal to be inclined in a desired direction. And UV induced multi-domain Vertical Alignment (UV) technology2A) The alignment film is irradiated by the polarized UV light, so that the liquid crystal is inclined in the expected direction, the power-up process is omitted, meanwhile, ITO electrode patterning is not needed, the alignment step and the design scheme can be further simplified, and the alignment precision is higher.
But the existing UV2In the a-alignment lcd panel, in order to improve color shift, most of them still adopt 4-domain structures (4 domains), i.e. each sub-pixel is divided into four alignment sub-regions with the same size, and the alignment directions between two adjacent alignment sub-regions in the same sub-pixel are perpendicular to each other, and such 4-domain structures form cross dark stripes at the junctions between the four alignment sub-regions of each sub-pixel, which affects the light transmittance. In order to improve the problem of the cross dark stripes, the prior art further provides a single domain structure (1 domain), that is, only one alignment region is formed in one sub-pixel, the alignment directions of the alignment regions corresponding to two adjacent sub-pixels are perpendicular to each other, and four sub-pixels adjacent to each other up, down, left and right are matched to achieve the same effect of improving color shift as the 4domain structure, but the single domain structure can reduce the cross dark stripes and improve the light transmittance, but still has the following disadvantages: as shown in fig. 1, in the conventional liquid crystal display panel with single domain structure, each row of sub-pixels includes red sub-pixels 101, green sub-pixels 102, and blue sub-pixels 103 that are alternately and repeatedly arranged in sequence, and the alignment directions of the adjacent sub-pixels with the same color in the same row are different, for example, the alignment directions of the first red sub-pixel 101 in the first row and the second red sub-pixel 101 in the first row in fig. 1 are different (perpendicular to each other), which may cause the same color in the same row to be differentThe sub-pixels of (2) have large brightness difference, and when a detail picture is displayed, the picture quality is distributed in a grid shape, so that the picture quality is influenced.
Disclosure of Invention
The invention aims to provide a liquid crystal display panel which can improve UV2The penetration rate of the A-direction liquid crystal display panel avoids the occurrence of lattice-shaped uneven brightness of a display picture and improves the display quality.
The invention also aims to provide UV of the liquid crystal display panel2A alignment method capable of improving UV2The penetration rate of the A-direction liquid crystal display panel avoids the occurrence of lattice-shaped uneven brightness of a display picture and improves the display quality.
In order to achieve the above object, the present invention provides a liquid crystal display panel using UV2The alignment process A carries out alignment and comprises the following steps: the pixel units are arranged in an array mode, each pixel unit comprises four sub-pixels, namely a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are sequentially arranged along the row direction, and the colors of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are different;
the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are respectively provided with an alignment region, the alignment directions of the alignment regions corresponding to the two adjacent sub-pixels are vertical to each other, and the alignment directions of the alignment regions corresponding to the sub-pixels which are positioned in the same row and have the same color are the same.
The colors of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are red, green, blue and white respectively.
The included angles between the alignment direction and the horizontal direction of the alignment regions corresponding to two adjacent sub-pixels in the same row are 45 degrees and 135 degrees respectively.
The included angles between the alignment direction and the vertical direction of the alignment regions corresponding to two adjacent sub-pixels in the same column are 45 degrees and 135 degrees respectively.
The pixel areas of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are equal.
The invention also provides UV of the liquid crystal display panel2A alignment method comprises the following steps:
step 1, providing a liquid crystal display panel, comprising: the pixel units are arranged in an array mode, each pixel unit comprises four sub-pixels, namely a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are sequentially arranged along the row direction, and the colors of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are different;
step 2, carrying out UV along the column direction on each sub-pixel from one side surface of the liquid crystal display panel2A is aligned and the alignment directions of two adjacent columns of sub-pixels are opposite;
step 3, performing UV along the row direction on each sub-pixel from the other side surface of the liquid crystal display panel2A alignment direction is opposite to that of two adjacent rows of sub-pixels, and UV is obtained2A, aligning a rear liquid crystal display panel;
in the UV2In the liquid crystal display panel after the alignment, an alignment region is formed in each of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel, the alignment directions of the alignment regions corresponding to two adjacent sub-pixels are perpendicular to each other, and the alignment directions of the alignment regions corresponding to the sub-pixels which are located in the same row and have the same color are the same.
The colors of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are red, green, blue and white respectively.
The included angles between the alignment direction and the horizontal direction of the alignment regions corresponding to two adjacent sub-pixels in the same row are 45 degrees and 135 degrees respectively.
The included angles between the alignment direction and the vertical direction of the alignment regions corresponding to two adjacent sub-pixels in the same column are 45 degrees and 135 degrees respectively.
The pixel areas of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are equal.
The invention has the beneficial effects that: the invention providesA liquid crystal display panel is provided. The liquid crystal display panel adopts UV2The alignment process A carries out alignment and comprises the following steps: the pixel units are arranged in an array mode, each pixel unit comprises four sub-pixels, namely a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are sequentially arranged along the row direction, and the colors of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are different; the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are respectively provided with an alignment region, the alignment directions of the alignment regions corresponding to the two adjacent sub-pixels are vertical to each other, and the alignment directions of the alignment regions corresponding to the sub-pixels which are positioned in the same row and have the same color are the same; by adding a fourth sub-pixel to pass UV2The alignment directions of the alignment regions corresponding to the sub-pixels in the same row and the same color in the liquid crystal display panel obtained by alignment A are the same, so that UV can be improved2The penetration rate of the A-direction liquid crystal display panel avoids the occurrence of lattice-shaped uneven brightness of a display picture and improves the display quality. The invention also provides UV of the liquid crystal display panel2A alignment method capable of improving UV2The penetration rate of the A-direction liquid crystal display panel avoids the occurrence of lattice-shaped uneven brightness of a display picture and improves the display quality.
Drawings
For a better understanding of the nature and technical aspects of the present invention, reference should be made to the following detailed description of the invention, taken in conjunction with the accompanying drawings, which are provided for purposes of illustration and description and are not intended to limit the invention.
In the drawings, there is shown in the drawings,
FIG. 1 shows a conventional UV2A is the pixel structure chart of the liquid crystal display panel of the direction;
FIG. 2 is a schematic diagram of a pixel structure of an LCD panel according to the present invention;
FIG. 3 shows UV of the liquid crystal display panel of the present invention2A, a flow chart of an alignment method;
FIG. 4 shows UV of the liquid crystal display panel of the present invention2A schematic diagram of step 2 of the alignment method;
FIG. 5 shows the present inventionUV of the liquid crystal display panel2Step 3 of the alignment method.
Detailed Description
To further illustrate the technical means and effects of the present invention, the following detailed description is given with reference to the preferred embodiments of the present invention and the accompanying drawings.
Referring to fig. 2, the present invention provides a liquid crystal display panel using UV2The alignment process A carries out alignment and comprises the following steps: the pixel units 1 are arranged in an array, each pixel unit 1 comprises four sub-pixels, namely a first sub-pixel 11, a second sub-pixel 12, a third sub-pixel 13 and a fourth sub-pixel 14 which are sequentially arranged along a row direction, and the colors of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13 and the fourth sub-pixel 14 are different;
an alignment region is formed in each of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13, and the fourth sub-pixel 14, alignment directions of the alignment regions corresponding to two adjacent sub-pixels are perpendicular to each other, and alignment directions of the alignment regions corresponding to the sub-pixels located in the same row and having the same color are the same.
It should be noted that, compared with the prior art, the fourth sub-pixel is added in the invention, so that UV is passed through2The alignment directions of the alignment regions corresponding to the sub-pixels in the same row and the same color in the liquid crystal display panel obtained by alignment A are the same, so that UV can be improved2The penetration rate of the A-direction liquid crystal display panel avoids the occurrence of lattice-shaped uneven brightness of a display picture and improves the display quality.
Preferably, the colors of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13 and the fourth sub-pixel 14 are red, green, blue and white, respectively, and by adding a white sub-pixel to the existing three primary colors of red, green and blue, the transmittance of the whole liquid crystal display panel can be further improved by using the high transmittance of the white sub-pixel, and the display effect of the liquid crystal display panel can be improved.
It should be understood that the colors of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13, and the fourth sub-pixel 14 are not limited to four colors, i.e., red, green, blue, and white, and may include other colors, i.e., yellow, cyan, and the like, and the sub-pixels of different colors may be arranged in other orders, i.e., in the order of red, blue, green, and white, or in the order of blue, red, green, and white, and the like.
Specifically, as shown in fig. 2, the angles between the alignment direction and the horizontal direction of the alignment regions corresponding to two adjacent sub-pixels in the same row are 45 ° and 135 °, respectively. The included angles between the alignment direction and the vertical direction of the alignment regions corresponding to two adjacent sub-pixels in the same row are 45 degrees and 135 degrees respectively, that is, for the 4 sub-pixels adjacent to each other up, down, left and right, the included angles between the alignment direction and the horizontal direction are 45 degrees, 135 degrees, -135 degrees and-45 degrees respectively, so that the technical effect same as that of the existing 4-domain structure can be achieved through the 4 sub-pixels adjacent to each other up, down, left and right, and the purpose of improving color cast can be achieved.
Preferably, the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13, and the fourth sub-pixel 14 have equal pixel areas. Meanwhile, it should be understood that, if necessary, the pixel areas of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13, and the fourth sub-pixel 14 may also be different, for example, the area of the third sub-pixel 13 or the fourth sub-pixel 14 is larger than the area of the first sub-pixel 11 and the second sub-pixel 12, and these modifications do not affect the implementation of the present invention.
Referring to fig. 3, the present invention also provides a UV of the liquid crystal display panel2A alignment method comprises the following steps:
step 1, as shown in fig. 4, provides a liquid crystal display panel, including: the pixel units 1 are arranged in an array, each pixel unit 1 comprises four sub-pixels, namely a first sub-pixel 11, a second sub-pixel 12, a third sub-pixel 13 and a fourth sub-pixel 14 which are sequentially arranged along a row direction, and the colors of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13 and the fourth sub-pixel 14 are different;
step 2, as shown in fig. 4, performing column-wise process on each sub-pixel from one side surface of the liquid crystal display panelDirectional UV2A is aligned and the alignment directions of two adjacent columns of sub-pixels are opposite.
Preferably, one side surface of the liquid crystal display panel subjected to the alignment in the step 2 is a side surface on which a TFT substrate of the liquid crystal display panel is located.
Step 3, as shown in FIG. 5, performing UV along the row direction on each sub-pixel from the other side surface of the liquid crystal display panel2A alignment direction is opposite to that of two adjacent rows of sub-pixels, and UV is obtained2And A, aligning the liquid crystal display panel.
Preferably, one side surface of the liquid crystal display panel subjected to the alignment in the step 3 is a side surface of the liquid crystal display panel on which the CF substrate is located.
In the UV region2In the liquid crystal display panel after the alignment a, an alignment region is formed in each of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13, and the fourth sub-pixel 14, the alignment directions of the alignment regions corresponding to two adjacent sub-pixels are perpendicular to each other, and the alignment directions of the alignment regions corresponding to the sub-pixels located in the same row and having the same color are the same.
Compared with the prior art, the invention is additionally provided with the fourth sub-pixel, so that UV is passed2The alignment directions of the alignment regions corresponding to the sub-pixels in the same row and the same color in the liquid crystal display panel obtained by alignment A are the same, so that UV can be improved2The penetration rate of the A-direction liquid crystal display panel avoids the occurrence of lattice-shaped uneven brightness of a display picture and improves the display quality.
Preferably, the colors of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13 and the fourth sub-pixel 14 are red, green, blue and white, respectively, and by adding a white sub-pixel to the existing three primary colors of red, green and blue, the transmittance of the whole liquid crystal display panel can be further improved by using the high transmittance of the white sub-pixel, and the display effect of the liquid crystal display panel can be improved.
It should be understood that the colors of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13, and the fourth sub-pixel 14 are not limited to four colors, i.e., red, green, blue, and white, and may include other colors, i.e., yellow, cyan, and the like, and the sub-pixels of different colors may be arranged in other orders, i.e., in the order of red, blue, green, and white, or in the order of blue, red, green, and white, and the like.
Specifically, as shown in fig. 2, the angles between the alignment direction and the horizontal direction of the alignment regions corresponding to two adjacent sub-pixels in the same row are 45 ° and 135 °, respectively. The included angles between the alignment direction and the vertical direction of the alignment regions corresponding to two adjacent sub-pixels in the same row are 45 degrees and 135 degrees respectively, that is, for the 4 sub-pixels adjacent to each other up, down, left and right, the included angles between the alignment direction and the horizontal direction are 45 degrees, 135 degrees, -135 degrees and-45 degrees respectively, so that the technical effect same as that of the existing 4-domain structure can be achieved through the 4 sub-pixels adjacent to each other up, down, left and right, and the purpose of improving color cast can be achieved.
Preferably, the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13, and the fourth sub-pixel 14 have equal pixel areas. Meanwhile, it should be understood that, if necessary, the pixel areas of the first sub-pixel 11, the second sub-pixel 12, the third sub-pixel 13, and the fourth sub-pixel 14 may also be different, for example, the area of the third sub-pixel 13 or the fourth sub-pixel 14 is larger than the area of the first sub-pixel 11 and the second sub-pixel 12, and these modifications do not affect the implementation of the present invention.
In summary, the present invention provides a liquid crystal display panel. The liquid crystal display panel adopts UV2The alignment process A carries out alignment and comprises the following steps: the pixel units are arranged in an array mode, each pixel unit comprises four sub-pixels, namely a first sub-pixel, a second sub-pixel, a third sub-pixel and a fourth sub-pixel which are sequentially arranged along the row direction, and the colors of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel are different; an alignment region is formed in each of the first sub-pixel, the second sub-pixel, the third sub-pixel and the fourth sub-pixel, the alignment directions of the alignment regions corresponding to two adjacent sub-pixels are perpendicular to each other, and the alignment regions corresponding to the sub-pixels which are located in the same row and have the same color are located in the same rowThe alignment directions are the same; by adding a fourth sub-pixel to pass UV2The alignment directions of the alignment regions corresponding to the sub-pixels in the same row and the same color in the liquid crystal display panel obtained by alignment A are the same, so that UV can be improved2The penetration rate of the A-direction liquid crystal display panel avoids the occurrence of lattice-shaped uneven brightness of a display picture and improves the display quality. The invention also provides UV of the liquid crystal display panel2A alignment method capable of improving UV2The penetration rate of the A-direction liquid crystal display panel avoids the occurrence of lattice-shaped uneven brightness of a display picture and improves the display quality.
As described above, it will be apparent to those skilled in the art that other various changes and modifications may be made based on the technical solution and concept of the present invention, and all such changes and modifications are intended to fall within the scope of the appended claims.
Claims (8)
1. The liquid crystal display panel is characterized in that the liquid crystal display panel adopts UV2The alignment process A carries out alignment and comprises the following steps: the pixel units (1) are arranged in an array, each pixel unit (1) comprises four sub-pixels, namely a first sub-pixel (11), a second sub-pixel (12), a third sub-pixel (13) and a fourth sub-pixel (14), which are sequentially arranged along a row direction, and the colors of the first sub-pixel (11), the second sub-pixel (12), the third sub-pixel (13) and the fourth sub-pixel (14) are different;
an alignment region is formed in each of the first sub-pixel (11), the second sub-pixel (12), the third sub-pixel (13) and the fourth sub-pixel (14), the alignment directions of the alignment regions corresponding to two adjacent sub-pixels are vertical to each other, and the alignment directions of the alignment regions corresponding to the sub-pixels which are positioned in the same row and have the same color are the same;
the colors of the first sub-pixel (11), the second sub-pixel (12), the third sub-pixel (13) and the fourth sub-pixel (14) are red, green, blue and white respectively.
2. The liquid crystal display panel of claim 1, wherein the alignment directions of the alignment regions corresponding to two adjacent sub-pixels in the same row respectively form angles of 45 ° and 135 ° with the horizontal direction.
3. The liquid crystal display panel of claim 1, wherein the alignment directions of the alignment regions corresponding to two adjacent sub-pixels in the same column respectively form angles of 45 ° and 135 ° with the vertical direction.
4. The liquid crystal display panel according to claim 1, wherein the first sub-pixel (11), the second sub-pixel (12), the third sub-pixel (13), and the fourth sub-pixel (14) have equal pixel areas.
5. UV of liquid crystal display panel2A alignment method is characterized by comprising the following steps:
step 1, providing a liquid crystal display panel, comprising: the pixel units (1) are arranged in an array, each pixel unit (1) comprises four sub-pixels, namely a first sub-pixel (11), a second sub-pixel (12), a third sub-pixel (13) and a fourth sub-pixel (14), which are sequentially arranged along a row direction, and the colors of the first sub-pixel (11), the second sub-pixel (12), the third sub-pixel (13) and the fourth sub-pixel (14) are different;
step 2, carrying out UV along the column direction on each sub-pixel from one side surface of the liquid crystal display panel2A is aligned and the alignment directions of two adjacent columns of sub-pixels are opposite;
step 3, performing UV along the row direction on each sub-pixel from the other side surface of the liquid crystal display panel2A alignment direction is opposite to that of two adjacent rows of sub-pixels, and UV is obtained2A, aligning a rear liquid crystal display panel;
in the UV2In the liquid crystal display panel after A alignment, an alignment area is respectively formed in the first sub-pixel (11), the second sub-pixel (12), the third sub-pixel (13) and the fourth sub-pixel (14), the alignment directions of the alignment areas corresponding to the two adjacent sub-pixels are mutually vertical, and the alignment areas corresponding to the sub-pixels which are positioned in the same row and have the same color are positioned in the same rowThe alignment directions to the regions are the same;
the colors of the first sub-pixel (11), the second sub-pixel (12), the third sub-pixel (13) and the fourth sub-pixel (14) are red, green, blue and white respectively.
6. UV of the liquid crystal display panel of claim 52The alignment method is characterized in that included angles between the alignment direction and the horizontal direction of alignment areas corresponding to two adjacent sub-pixels in the same row are 45 degrees and 135 degrees respectively.
7. UV of the liquid crystal display panel of claim 52The alignment method is characterized in that included angles between the alignment direction and the vertical direction of alignment areas corresponding to two adjacent sub-pixels in the same column are 45 degrees and 135 degrees respectively.
8. UV of the liquid crystal display panel of claim 52The A alignment method is characterized in that the pixel areas of the first sub-pixel (11), the second sub-pixel (12), the third sub-pixel (13) and the fourth sub-pixel (14) are equal.
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|---|---|---|---|---|
| US11211430B2 (en) * | 2019-01-28 | 2021-12-28 | Chengdu Boe Optoelectronics Technology Co., Ltd. | Display panel for improving display effect in low-resolution area, manufacturing method thereof, and display device |
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