CN114371577B - Side-entry type liquid crystal display panel, alignment method thereof and liquid crystal display device - Google Patents
Side-entry type liquid crystal display panel, alignment method thereof and liquid crystal display device Download PDFInfo
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- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 186
- 238000000034 method Methods 0.000 title claims abstract description 38
- 239000000758 substrate Substances 0.000 claims abstract description 130
- 230000000875 corresponding effect Effects 0.000 claims abstract description 71
- 230000002596 correlated effect Effects 0.000 claims abstract description 11
- 238000001514 detection method Methods 0.000 claims description 18
- 238000004070 electrodeposition Methods 0.000 claims description 9
- 239000000178 monomer Substances 0.000 claims description 7
- 238000006116 polymerization reaction Methods 0.000 claims description 7
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 239000012528 membrane Substances 0.000 claims 2
- 230000000694 effects Effects 0.000 abstract description 5
- 230000005684 electric field Effects 0.000 description 8
- 239000003292 glue Substances 0.000 description 8
- 229920000642 polymer Polymers 0.000 description 7
- 239000004642 Polyimide Substances 0.000 description 6
- 229920001721 polyimide Polymers 0.000 description 6
- 239000002245 particle Substances 0.000 description 5
- 239000000565 sealant Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 230000000379 polymerizing effect Effects 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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
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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
- G02F1/133753—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle
- G02F1/133761—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers with different alignment orientations or pretilt angles on a same surface, e.g. for grey scale or improved viewing angle with different pretilt angles
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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
- G02F1/1343—Electrodes
- G02F1/134309—Electrodes characterised by their geometrical arrangement
- G02F1/134336—Matrix
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Geometry (AREA)
- Spectroscopy & Molecular Physics (AREA)
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Abstract
The application discloses a side-entry liquid crystal display panel, an alignment method thereof and a liquid crystal display device, wherein the alignment method of the side-entry liquid crystal display panel comprises the following steps: preparing a color film substrate and an array substrate, and injecting liquid crystal to complete a box alignment process; the array substrate is provided with pixel electrodes which are arranged in an array manner, and the pixel electrodes are divided into a plurality of areas along the direction perpendicular to the extending direction of the side-entering type light source; and respectively carrying out pretilt angles with different alignment directions on liquid crystal molecules corresponding to the pixel electrodes of the plurality of areas, wherein the pretilt angles are positively correlated with the distance between the area where the pretilt angles are positioned and the side-entrance light source. By the mode, the response time of different areas of the side-entry liquid crystal display panel can be changed, and the whole response time of the side-entry liquid crystal display panel is ensured to be consistent, so that the display effect is improved.
Description
Technical Field
The application relates to the technical field of display, in particular to a side-in liquid crystal display panel, an alignment method thereof and a liquid crystal display device.
Background
In the case of medium and small size display products, such as displays, because of the limited use environment, portability and thin-profile, side-entry light sources are mostly used, which makes the temperature of the display panel higher near the light bar, the higher the temperature, the lower the viscosity coefficient (viscosity for short) of the liquid crystal, and the on-state response time t of the liquid crystal display on And off-state response time t off The following formula is shown:
wherein, gamma 1 Is the viscosity coefficient of liquid crystal, epsilon 0 The dielectric constant is vacuum, delta epsilon is the dielectric difference of liquid crystal, E is the driving electric field strength, E th Is of threshold electric field strengthDegree. As described in the formulas 1 and 2, when the temperature of the display area far from the side-entrance light source is lower than the temperature of the display area near to the side-entrance light source, the response time of the display area far from the side-entrance light source is longer, and particularly when the moving image is played, the image quality problems such as blurred images will be displayed, and the blur condition is more serious when the side-entrance light source is further.
Disclosure of Invention
The application mainly solves the technical problem of providing a side-entry liquid crystal display panel, an alignment method thereof and a liquid crystal display device, so as to ensure the consistency of the overall response time of the side-entry liquid crystal display panel and improve the display effect.
In order to solve the above technical problems, a first technical solution adopted by the present application is to provide an alignment method of a side-entry liquid crystal display panel, where the alignment method of the side-entry liquid crystal display panel includes: preparing a color film substrate and an array substrate, and injecting liquid crystal to complete a box alignment process; the array substrate is provided with pixel electrodes which are arranged in an array manner, and the pixel electrodes are divided into a plurality of areas along the direction perpendicular to the extending direction of the side-entering type light source; and respectively carrying out pretilt angles with different alignment directions on liquid crystal molecules corresponding to the pixel electrodes of the plurality of areas, wherein the pretilt angles are positively correlated with the distance between the area where the pretilt angles are positioned and the side-entrance light source.
Wherein, a common electrode is arranged on one side of the color film substrate facing the liquid crystal molecules; the step of respectively performing different pretilt angles on the liquid crystal molecules corresponding to the pixel electrodes of the plurality of regions comprises the following steps: and applying different voltage differences to the pixel electrodes of the multiple areas and the corresponding common electrodes, so that the liquid crystal molecules corresponding to the different areas deflect at different angles to generate different pretilt angles.
The array substrate further comprises a plurality of parallel data lines, and each pixel electrode is connected with one data line; the array substrate is also provided with a curing electrode pin and an array substrate detection pin, a rubber frame is arranged between the array substrate and the color film substrate, and the curing electrode pin is connected with the public electrode through the rubber frame; the array substrate detection pin is connected with the data line; the step of applying different voltage differences to the pixel electrodes of the multiple regions and the corresponding common electrode to further deflect the liquid crystal molecules corresponding to the different regions at different angles and generate different pretilt angles comprises the following steps: and applying different voltages to the pixel electrodes of each region through the data lines by using the array substrate detection pins, and applying the same voltage to the common electrode through the rubber frame by using the curing electrode pins, so that different voltage differences are generated between the pixel electrodes of a plurality of different regions and the corresponding common electrodes, and the liquid crystal molecules corresponding to the pixel electrode positions of the plurality of regions are deflected by corresponding angles, thereby realizing different pretilt angles of alignment.
The step of applying the same voltage to the common electrode through the glue frame by using the curing electrode pins to generate different voltage differences between the pixel electrodes of the multiple different areas and the corresponding common electrode so as to deflect the liquid crystal molecules corresponding to the pixel electrode positions of the multiple areas by corresponding angles, thereby realizing different pretilt angles of alignment, further comprises: and removing the solidified electrode pin.
The step of respectively performing different pretilt angles on the liquid crystal molecules corresponding to the pixel electrodes of the plurality of regions further includes: and curing the pretilt angle.
Wherein, the step of solidifying the pretilt angle comprises the following steps: irradiating the deflected liquid crystal molecules by using ultraviolet light, so that polymerization reaction is carried out on polymerization monomers in the liquid crystal molecules to solidify the deflection angle of the liquid crystal molecules, and the pretilt angle is obtained.
Wherein, the voltage difference between the pixel electrode and the corresponding common electrode ranges from 10V to 25V.
Wherein the pretilt angle is 0-90 degrees.
In order to solve the technical problems, a second technical scheme adopted by the application is to provide a side-entry type liquid crystal display panel, which comprises an array substrate and a color film substrate which are oppositely arranged, and further comprises liquid crystal molecules arranged between the array substrate and the color film substrate, wherein the array substrate is provided with pixel electrodes which are arranged in an array manner, the pixel electrodes are divided into a plurality of areas along the vertical direction with the extending direction of a side-entry type light source, the pretilt angles of the liquid crystal molecules corresponding to the pixel electrode positions of each area are different, and the size of the pretilt angles is positively correlated with the distance between the area where the pixel electrodes are positioned and the side-entry type light source.
In order to solve the technical problems, a third technical scheme adopted by the application is to provide a liquid crystal display device, which comprises a side-in liquid crystal display panel, a liquid crystal display device and a liquid crystal display device, wherein the side-in liquid crystal display panel comprises an array substrate and a color film substrate which are oppositely arranged, the liquid crystal display device also comprises liquid crystal molecules arranged between the array substrate and the color film substrate, and pixel electrodes which are arranged in an array are arranged on the array substrate; the array substrate comprises an array substrate, wherein the array substrate comprises a plurality of pixel electrodes, each pixel electrode is divided into a plurality of areas along the vertical direction of the extending direction of the corresponding pixel electrode, the liquid crystal molecules in the areas are different in pretilt angle, and the pretilt angle is positively correlated with the distance between the area where the pixel electrode is positioned and the lateral light source.
The beneficial effects of the application are as follows: compared with the prior art, the application provides a side-entry liquid crystal display panel, an alignment method thereof and a liquid crystal display device, wherein a color film substrate and an array substrate are prepared, liquid crystal is injected, and a box alignment process is completed, wherein pixel electrodes which are arranged in an array are arranged on the array substrate, the pixel electrodes are divided into a plurality of areas along the vertical direction with the extending direction of a side-entry light source, and then different pretilt angles are respectively aligned by liquid crystal molecules corresponding to the pixel electrodes of the areas, wherein the pretilt angles are positively correlated with the distance between the area where the pretilt angles are located and the side-entry light source. Therefore, by optimizing the liquid crystal alignment process, different pretilt angles are correspondingly formed for the liquid crystal alignment of different temperature areas on the display panel, and particularly according to the position of the side-entrance light source, as the temperature of the area close to the side-entrance light source is higher and the temperature of the area far away from the side-entrance light source is lower, a smaller pretilt angle is formed in the area with higher temperature, and a larger pretilt angle is formed in the area with lower temperature, so that the stroke of liquid crystal required to rotate under the same driving electric field is reduced due to the increase of the pretilt angle, namely, the time required for the liquid crystal in the area with larger pretilt angle to rotate to the corresponding position under the action of the same driving electric field is shorter than that of the liquid crystal in the area with smaller pretilt angle, thereby solving the problem that the response time is longer due to the higher temperature in the area with larger pretilt angle, ensuring the consistency of the whole response time of the side-entrance liquid crystal display panel, and improving the display effect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for the description of the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments of the present application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic flow chart of an alignment method of a side-entry liquid crystal display panel according to an embodiment of the application;
FIG. 2 is a flow chart of an embodiment of step S12 in FIG. 1;
FIG. 3 is a schematic cross-sectional view of an embodiment of a side-entry liquid crystal display panel according to the present application;
fig. 4 is a schematic structural diagram of an embodiment of the liquid crystal display device of the present application.
30 parts of a side-entry type liquid crystal display panel; 301. an array substrate; 3010. a pixel electrode; 3011. solidifying the electrode pins; 3012. an array substrate detection pin; 302. a color film substrate; 3020. a common electrode; 303. liquid crystal molecules; 304. a rubber frame; 305. polymerizing the monomers; 31. a side entry light source; 40. a liquid crystal display device; 400. a backlight device.
Detailed Description
The following description of the embodiments of the present application will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present application, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the present application without making any inventive effort, are intended to fall within the scope of the present application.
The terminology used in the embodiments of the application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used in this application and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise, the "plurality" generally includes at least two, but does not exclude the case of at least one.
It should be understood that the term "and/or" as used herein is merely one relationship describing the association of the associated objects, meaning that there may be three relationships, e.g., a and/or B, may represent: a exists alone, A and B exist together, and B exists alone. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.
It should be understood that the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising … …" does not exclude the presence of other like elements in a process, method, article or apparatus that comprises the element.
Referring to fig. 1, fig. 1 is a flow chart illustrating an alignment method of a side-entry liquid crystal display panel according to an embodiment of the application. The alignment method of the side-in type liquid crystal display panel of the embodiment comprises the following steps:
step S11: preparing a color film substrate and an array substrate, and injecting liquid crystal to complete a box alignment process; the array substrate is provided with pixel electrodes which are arranged in an array mode, and the pixel electrodes are divided into a plurality of areas along the direction perpendicular to the extending direction of the side-entering type light source.
Specifically, an array substrate and a color film substrate are prepared in advance, the array substrate is provided with a containing part, liquid crystal is injected into the containing part, then the color film substrate and the array substrate are subjected to pairing lamination, a display panel is obtained, and a box pairing process is completed. The display panel comprises a color film substrate, an array substrate and a liquid crystal layer, wherein the color film substrate and the array substrate are oppositely arranged, and the liquid crystal layer is arranged between the color film substrate and the array substrate. The display panel obtained by the embodiment of the application is a side-in type liquid crystal display panel, namely the prepared display device adopts a side-in type light source, the array substrate is provided with pixel electrodes which are arranged in an array manner, the pixel electrodes are divided into a plurality of areas along the vertical direction with the extending direction of the side-in type light source, namely the display area of the side-in type liquid crystal display panel is divided into a plurality of areas along the vertical direction with the extending direction of the side-in type light source.
Step S12: respectively carrying out different pretilt angles on liquid crystal molecules corresponding to the pixel electrodes of the multiple areas; wherein the magnitude of the pretilt angle is positively correlated with the distance between the area where the pretilt angle is located and the side-entrance light source.
In the embodiment of the application, the pretilt angle is an included angle between a long axis of the liquid crystal molecules and an extending direction of the side-entrance light source. It will be appreciated that in the plurality of regions of the pixel electrode divided in a direction perpendicular to the extending direction of the side-entrance light source, the different regions are different in distance from the side-entrance light source, and the regions near the side-entrance light source are different in viscosity coefficient due to the fact that the regions far from the side-entrance light source are higher in temperature and the regions far from the side-entrance light source are lower in temperature, that is, the regions near the side-entrance light source are low in viscosity coefficient, the regions far from the side-entrance light source are high in viscosity coefficient, the response time of the different regions of the display panel is different, the response time of the regions near the side-entrance light source is short, and the response time far from the side-entrance light source is long. In the embodiment of the application, the liquid crystal molecules corresponding to the pixel electrodes of the plurality of areas are respectively subjected to pretilt angles with different alignment directions, and the pretilt angles are positively correlated with the distance between the area where the liquid crystal molecules are positioned and the side-entrance light source, namely, the pretilt angles of the liquid crystal molecules in the area close to the side-entrance light source are small, and the pretilt angles of the liquid crystal molecules in the area far from the side-entrance light source are large.
According to the scheme, different pretilt angles are correspondingly formed for the liquid crystal alignment of different temperature areas on the display panel by optimizing the liquid crystal alignment process, smaller pretilt angles are formed in areas with higher temperature, larger pretilt angles are formed in areas with lower temperature, so that the stroke of liquid crystal required to rotate under the same driving electric field is reduced due to the increase of the pretilt angles, namely, the time required for the liquid crystal in the area with larger pretilt angles to rotate to the corresponding position is shorter than that required for the liquid crystal in the area with smaller pretilt angles under the action of the same driving electric field, the problem that the response time is longer due to the fact that the temperature is higher in the area with larger pretilt angles is solved, the integral response time consistency of the side-entering type liquid crystal display panel is ensured, and the display effect is improved.
Referring to fig. 2, fig. 2 is a flow chart illustrating an embodiment of step S12 in fig. 1. In a specific embodiment, a common electrode is disposed on a side of the color film substrate facing the liquid crystal molecules, and the step S12 may specifically include:
step S121: and applying different voltage differences to the pixel electrodes of the multiple areas and the corresponding common electrodes, so that the liquid crystal molecules corresponding to the different areas deflect at different angles to generate different pretilt angles.
Specifically, the side-in type liquid crystal display panel comprises a color film substrate and an array substrate which are oppositely arranged, a liquid crystal layer is arranged between the color film substrate and the array substrate, one side of the array substrate facing liquid crystal molecules is provided with pixel electrodes which are arranged in an array mode, the pixel electrodes are divided into a plurality of areas along the vertical direction with the extending direction of the side-in type light source, and one side of the color film substrate facing the liquid crystal molecules is provided with a public electrode. In the alignment stage, for each region, the voltage difference between the pixel electrode and the common electrode of the region is controlled, so that the voltage difference corresponding to each region is different, and then, the different voltage differences enable the liquid crystal molecules corresponding to different regions to deflect at different angles, so as to generate different pretilt angles.
Further, in a specific embodiment, the array substrate further includes a plurality of parallel data lines, and each pixel electrode is connected to one of the data lines; the array substrate is also provided with a curing electrode pin and an array substrate detection pin, a rubber frame is arranged between the array substrate and the color film substrate, and the curing electrode pin is connected with the common electrode through the rubber frame; the array substrate detection pins are connected with the data lines. The step S121 may specifically include: and applying different voltages to the pixel electrodes of each region through the data lines by using the array substrate detection pins, and applying the same voltage to the common electrode through the rubber frame by using the curing electrode pins, so that different voltage differences are generated between the pixel electrodes of a plurality of different regions and the corresponding common electrodes, and the liquid crystal molecules corresponding to the pixel electrode positions of the plurality of regions are deflected by corresponding angles, thereby realizing different pretilt angles of alignment.
Specifically, the frame glue contains conductive particles, and the solidified electrode pins on the array substrate are connected with the common electrode on the color film substrate through the conductive particles in the frame glue, so that the solidified electrode pins can be used for applying the same voltage to the common electrode through the glue frame; the array substrate detection pins on the array substrate are connected with the data lines, and the array substrate comprises a plurality of parallel data lines, and each pixel electrode is connected with one of the data lines, so that different voltages can be applied to the pixel electrodes in different areas through different data lines by using the array substrate detection pins. Thus, the voltage difference between the pixel electrode and the common electrode in different areas is different, and the different voltage difference makes the liquid crystal molecules corresponding to each area deflect at corresponding angles, so as to realize different pretilt angles of alignment.
Further, after the liquid crystal molecules corresponding to the pixel electrode positions of each region deflect by corresponding angles to realize different pretilt angles, the alignment method of the side-entry liquid crystal display panel of the application further comprises the following steps: and removing the solidified electrode pin. The solidified electrode pins on the array substrate are used for applying the same voltage to the common electrode on the color film substrate in the alignment stage, and the solidified electrode pins can be removed after the liquid crystal molecules in each region are aligned to different pretilt angles.
In an embodiment, after the step S121, the step S12 may further include:
step S122: and curing the pretilt angle. It can be understood that after the alignment of the liquid crystal molecules in each region is completed, the deflection angle of the liquid crystal molecules can be cured to form the liquid crystal pretilt angle.
Further, the step S122 may specifically include: irradiating the deflected liquid crystal molecules by using ultraviolet light, so that polymerization reaction is carried out on polymerization monomers in the liquid crystal molecules to solidify the deflection angle of the liquid crystal molecules, and the pretilt angle is obtained.
Specifically, a liquid crystal layer filled between the color film substrate and the array substrate comprises liquid crystal molecules, a polymer and Polyimide (PI), when a corresponding voltage difference is applied between pixel electrodes and a common electrode in different areas, the liquid crystal molecules in each area reach a preset deflection angle, and then the deflected liquid crystal molecules are irradiated by ultraviolet light to carry out illumination alignment, so that the polymer is formed by the reaction of the polymer and the PI in the liquid crystal molecules, the deflection angle of the liquid crystal molecules is solidified by fixing the deflection angle of the liquid crystal molecules, and the liquid crystal molecules in each area obtain respective corresponding pretilt angles.
In one embodiment, the voltage difference between the pixel electrode and the corresponding common electrode ranges from 10V to 25V. It is understood that since the pretilt angle of the liquid crystal molecules is small in the region near the side-entrance light source and the pretilt angle of the liquid crystal molecules is large in the region far from the side-entrance light source, the voltage difference between the pixel electrode and the corresponding common electrode in the region near the side-entrance light source should be set small, and the voltage difference between the pixel electrode and the corresponding common electrode in the region far from the side-entrance light source should be set large. For example, a plurality of regions are divided, and the voltage difference between the pixel electrode and the corresponding common electrode in each region increases from 10V to 25V in the order from the side-entry light source to the side-entry light source.
In one embodiment, the pretilt angle is 0 to 90 degrees. It is understood that the pretilt angle of the liquid crystal molecules in the region near the side-entrance light source may be small, for example, 10 degrees or 15 degrees, and the pretilt angle of the liquid crystal molecules in the region far from the side-entrance light source may be large, for example, 75 degrees or 80 degrees.
In an application scene, the side-entry liquid crystal display panel comprises a color film substrate and an array substrate which are oppositely arranged, a liquid crystal layer is arranged between the color film substrate and the array substrate, one side of the array substrate facing liquid crystal molecules is provided with pixel electrodes which are arranged in an array mode, the pixel electrodes are divided into three areas along the vertical direction with the extending direction of the side-entry light source, a high temperature area, a middle temperature area and a low temperature area are sequentially arranged in the sequence from near to far from the side-entry light source, and one side of the color film substrate facing the liquid crystal molecules is provided with a public electrode. The curing electrode pins on the array substrate are connected with the common electrode on the color film substrate through conductive particles in the frame glue, the array substrate detection pins on the array substrate are connected with the data lines, and the array substrate comprises a plurality of parallel data lines, and each pixel electrode is connected with one of the data lines, so that the same voltage can be applied to the common electrode through the glue frame by utilizing the curing electrode pins, and different voltages can be applied to the pixel electrodes in different areas through different data lines by utilizing the array substrate detection pins. Thus, the voltage difference between the pixel electrode and the common electrode in different regions is different, the voltage difference corresponding to the high temperature region is 10V, the voltage difference corresponding to the middle temperature region is 15V, the voltage difference corresponding to the low temperature region is 20V, the liquid crystal molecules corresponding to the high temperature region, the middle temperature region and the low temperature region are deflected by corresponding angles, different pretilt angles of alignment are realized, and the pretilt angle of the liquid crystal molecules corresponding to the high temperature region is theta 1 Pretilt angle of liquid crystal molecules corresponding to the middle temperature region is theta 2 Pretilt angle of liquid crystal molecules corresponding to low temperature region is theta 3 Wherein 0 DEG < theta 1 ＜θ 2 ＜θ 3 Less than 90 deg.. Then irradiating the deflected liquid crystal molecules by ultraviolet light to enable the polymerization monomer in the liquid crystal molecules to react with PI to form a polymer so as to fixThe deflection angle of the liquid crystal molecules is solidified, so that a smaller pretilt angle is formed in a display area with higher temperature, and a larger pretilt angle is formed in a display area with lower temperature.
The application also provides a side-entry liquid crystal display panel, which is prepared by the alignment method of the side-entry liquid crystal display panel. Referring to fig. 3, fig. 3 is a schematic cross-sectional structure of an embodiment of a side-entry lcd panel according to the present application. In this embodiment, the side-entry liquid crystal display panel 30 includes an array substrate 301 and a color film substrate 302 that are disposed opposite to each other, and further includes liquid crystal molecules 303 disposed between the array substrate 301 and the color film substrate 302, pixel electrodes 3010 that are arranged in an array are disposed on the array substrate 301, the pixel electrodes 3010 are divided into a plurality of regions along a direction perpendicular to an extending direction of the side-entry light source 31, pretilt angles θ of the liquid crystal molecules 303 corresponding to positions of the pixel electrodes 3010 in the respective regions are different, and the magnitude of the pretilt angle θ is positively correlated with a distance between the region where the pretilt angle θ is located and the side-entry light source 31.
Further, a common electrode 3020 is provided on a side of the color film substrate 302 facing the liquid crystal molecules 303. By controlling the voltage difference between the pixel electrode 3010 and the common electrode 3020 of each region for each region in the alignment stage, the voltage difference corresponding to each region is made different, and thus, the different voltage differences cause the liquid crystal molecules 303 corresponding to different regions to deflect at different angles, resulting in different pretilt angles θ.
Further, the array substrate 301 further includes a plurality of parallel data lines (not shown), and each pixel electrode 3010 is connected to one of the data lines; the array substrate 301 is also provided with a curing electrode pin 3011 and an array substrate detection pin 3012, a glue frame 304 is arranged between the array substrate 301 and the color film substrate 302, and the curing electrode pin 3011 is connected with a common electrode 3020 through the glue frame 304; the array substrate detection pin 3012 is connected to a data line. Specifically, the sealant contains conductive particles, and the cured electrode pins 3011 on the array substrate 301 are connected to the common electrode 3020 on the color film substrate 302 through the conductive particles in the sealant, so that the same voltage can be applied to the common electrode 3020 through the sealant 304 by using the cured electrode pins 3011; the array substrate detection pins 3012 on the array substrate 301 are connected to the data lines, and the array substrate 301 includes a plurality of parallel data lines, and each pixel electrode 3010 is connected to one of the data lines, so that different voltages can be applied to the pixel electrodes 3010 in different areas through different data lines by using the array substrate detection pins 3012. Then, the voltage differences between the pixel electrode 3010 and the common electrode 3020 in different regions are different, and the different voltage differences deflect the liquid crystal molecules 303 corresponding to the respective regions by corresponding angles, thereby realizing different pretilt angles θ for alignment.
In an embodiment, the liquid crystal layer filled between the color film substrate 302 and the array substrate 301 includes liquid crystal molecules 303, a polymer monomer 305 and polyimide (not shown), when a corresponding voltage difference is applied between the pixel electrode 3010 and the common electrode 3020 in different regions, the liquid crystal molecules 303 in each region reach a predetermined deflection angle, and then the deflected liquid crystal molecules 303 are irradiated with ultraviolet light to perform illumination alignment, so that the polymer monomer 305 and the PI in the liquid crystal molecules 303 react to form a polymer, and the deflection angle of the liquid crystal molecules 303 is fixed, so that the deflection angle of the liquid crystal molecules 303 is cured, and the liquid crystal molecules 303 in each region obtain a corresponding pretilt angle θ.
In this way, by optimizing the liquid crystal alignment process, different pretilt angles are correspondingly formed for the liquid crystal alignment of different temperature areas on the side-entrance type liquid crystal display panel 30, specifically according to the position of the side-entrance type light source 31, because the temperature of the area close to the side-entrance type light source 31 is higher and the temperature of the area far from the side-entrance type light source 31 is lower, a smaller pretilt angle is formed in the area with higher temperature and a larger pretilt angle is formed in the area with lower temperature, so that the stroke of the liquid crystal molecules 303 needing to rotate under the same driving electric field is reduced due to the increase of the pretilt angle, that is, the time required for the liquid crystal molecules 303 in the area with larger pretilt angle to rotate to the corresponding position under the action of the same driving electric field is shorter than that of the liquid crystal molecules 303 in the area with smaller pretilt angle, so that the problem that the response time is longer due to the fact that the temperature is higher in the area with larger pretilt angle is solved, the whole response time of the side-entrance type liquid crystal display panel 30 is ensured to be consistent, and the display effect is improved.
The application also provides a liquid crystal display device. Fig. 3 and fig. 4 are combined, wherein fig. 4 is a schematic structural diagram of an embodiment of the liquid crystal display device of the present application. In this embodiment, the liquid crystal display device 40 includes a side-in liquid crystal display panel 30, where the side-in liquid crystal display panel 30 includes an array substrate 301 and a color film substrate 302 that are disposed opposite to each other, and further includes liquid crystal molecules 303 disposed between the array substrate 301 and the color film substrate 302, and pixel electrodes 3010 arranged in an array are disposed on the array substrate 301; the array substrate 301 further includes a backlight 400 on one side, the backlight 400 includes a side-entrance light source 31 and a light guide plate (not shown), the pixel electrode 3010 is divided into a plurality of regions along a direction perpendicular to the extending direction of the side-entrance light source 31, the pretilt angles of the liquid crystal molecules 303 corresponding to the positions of the pixel electrode 3010 in each region are different, and the magnitude of the pretilt angles is positively correlated with the distance between the region where the pretilt angle is located and the side-entrance light source 31.
The side-entry liquid crystal display panel 30 is the side-entry liquid crystal display panel 30 according to any of the above embodiments. For a specific structure of the side-entry liquid crystal display panel 30, refer to fig. 1-3 and the description related to the above embodiments.
The foregoing description is only of embodiments of the present application, and is not intended to limit the scope of the application, and all equivalent structures or equivalent processes using the descriptions and the drawings of the present application or directly or indirectly applied to other related technical fields are included in the scope of the present application.
Claims (10)
1. The alignment method of the side-entry liquid crystal display panel is characterized by comprising the following steps of:
preparing a color film substrate and an array substrate, and injecting liquid crystal to complete a box alignment process; the array substrate is provided with pixel electrodes which are arranged in an array manner, and a display area of the side-entering type liquid crystal display panel is divided into a plurality of areas along the vertical direction with the extending direction of the side-entering type light source;
respectively carrying out different pretilt angles on liquid crystal molecules corresponding to the pixel electrodes of the multiple areas; wherein the magnitude of the pretilt angle is positively correlated with the distance between the area where the pretilt angle is located and the side-entrance light source.
2. The alignment method of a side-in liquid crystal display panel according to claim 1, wherein a common electrode is disposed on a side of the color film substrate facing the liquid crystal molecules; the step of respectively performing different pretilt angles on the liquid crystal molecules corresponding to the pixel electrodes of the plurality of regions comprises the following steps:
and applying different voltage differences to the pixel electrodes of the multiple areas and the corresponding common electrodes, so that the liquid crystal molecules corresponding to the different areas deflect at different angles to generate different pretilt angles.
3. The alignment method of a side-in type liquid crystal display panel according to claim 2, wherein the array substrate further comprises a plurality of parallel data lines, each pixel electrode being connected to one of the data lines; the array substrate is also provided with a curing electrode pin and an array substrate detection pin, a rubber frame is arranged between the array substrate and the color film substrate, and the curing electrode pin is connected with the public electrode through the rubber frame; the array substrate detection pin is connected with the data line;
the step of applying different voltage differences to the pixel electrodes of the multiple regions and the corresponding common electrode to further deflect the liquid crystal molecules corresponding to the different regions at different angles and generate different pretilt angles comprises the following steps:
applying different voltages to the pixel electrodes of each of the regions through the data lines using the array substrate detection pins, and
and applying the same voltage to the common electrode through the rubber frame by utilizing the solidified electrode pins, so that different voltage differences are generated between the pixel electrodes of a plurality of different areas and the corresponding common electrode, and the liquid crystal molecules corresponding to the pixel electrode positions of the areas are deflected by corresponding angles, so that different pretilt angles of alignment are realized.
4. The alignment method of a side-entry liquid crystal display panel according to claim 3, wherein the step of applying the same voltage to the common electrode through the frame by using the solidified electrode pins to generate different voltage differences between the pixel electrodes of the plurality of different regions and the corresponding common electrode so as to deflect the liquid crystal molecules corresponding to the pixel electrode positions of the plurality of regions by corresponding angles, thereby realizing different pretilt angles of alignment, further comprises:
and removing the solidified electrode pin.
5. The alignment method of a side-entry liquid crystal display panel according to any one of claims 1 to 3, wherein the step of aligning the liquid crystal molecules corresponding to the pixel electrodes of the plurality of regions respectively with different pretilt angles further comprises:
and curing the pretilt angle.
6. The alignment method of a side-entry liquid crystal display panel according to claim 5, wherein the curing the pretilt angle comprises:
irradiating the deflected liquid crystal molecules by using ultraviolet light, so that polymerization reaction is carried out on polymerization monomers in the liquid crystal molecules to solidify the deflection angle of the liquid crystal molecules, and the pretilt angle is obtained.
7. The alignment method of a side-entry liquid crystal display panel according to any one of claims 2 to 4, wherein a voltage difference between the pixel electrode and the corresponding common electrode ranges from 10v to 25v.
8. The alignment method of a side-entry liquid crystal display panel according to claim 1, wherein the pretilt angle is 0-90 degrees.
9. The utility model provides a side income formula liquid crystal display panel, includes array substrate and the various membrane base plate of relative setting, still including setting up array substrate with the liquid crystal molecule between the various membrane base plate, be provided with the pixel electrode that is the array and arrange on the array substrate, its characterized in that, side income formula liquid crystal display panel's display region divide into a plurality of regions along the vertical direction with side income formula light source extending direction, the pretilt angle of the liquid crystal molecule that the pixel electrode position in each region corresponds is different, just the size of pretilt angle and its place the region and the distance of side income formula light source become the positive correlation.
10. The liquid crystal display device comprises a side-in type liquid crystal display panel, wherein the side-in type liquid crystal display panel comprises an array substrate and a color film substrate which are oppositely arranged, and further comprises liquid crystal molecules arranged between the array substrate and the color film substrate, and pixel electrodes which are arranged in an array are arranged on the array substrate; the array substrate is characterized in that a display area of the side-entry liquid crystal display panel is divided into a plurality of areas along the vertical direction of the extending direction of the side-entry light source, pretilt angles of liquid crystal molecules corresponding to pixel electrode positions of all the areas are different, and the pretilt angles are positively correlated with the distance between the area where the pretilt angles are located and the side-entry light source.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1303022A (en) * | 1999-12-27 | 2001-07-11 | 松下电器产业株式会社 | Liquid crystal display device and its driving method |
| CN1825413A (en) * | 2004-12-15 | 2006-08-30 | 日本电气株式会社 | Liquid crystal display device, and method and circuit for driving the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN1303022A (en) * | 1999-12-27 | 2001-07-11 | 松下电器产业株式会社 | Liquid crystal display device and its driving method |
| CN1825413A (en) * | 2004-12-15 | 2006-08-30 | 日本电气株式会社 | Liquid crystal display device, and method and circuit for driving the same |
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