CN114326217B - Coating method of alignment liquid and preparation method of array substrate - Google Patents
Coating method of alignment liquid and preparation method of array substrate Download PDFInfo
- Publication number
- CN114326217B CN114326217B CN202111639936.5A CN202111639936A CN114326217B CN 114326217 B CN114326217 B CN 114326217B CN 202111639936 A CN202111639936 A CN 202111639936A CN 114326217 B CN114326217 B CN 114326217B
- Authority
- CN
- China
- Prior art keywords
- area
- coating
- peripheral
- alignment liquid
- effective display
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000000576 coating method Methods 0.000 title claims abstract description 124
- 239000007788 liquid Substances 0.000 title claims abstract description 81
- 239000000758 substrate Substances 0.000 title claims abstract description 50
- 238000002360 preparation method Methods 0.000 title claims abstract description 15
- 239000011248 coating agent Substances 0.000 claims abstract description 91
- 230000002093 peripheral effect Effects 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims abstract description 28
- 239000010410 layer Substances 0.000 claims description 71
- 229910052751 metal Inorganic materials 0.000 claims description 33
- 239000002184 metal Substances 0.000 claims description 33
- 239000011241 protective layer Substances 0.000 claims description 16
- 239000004642 Polyimide Substances 0.000 claims description 9
- 229920001721 polyimide Polymers 0.000 claims description 9
- 230000008569 process Effects 0.000 abstract description 18
- 238000009792 diffusion process Methods 0.000 abstract description 7
- 239000010408 film Substances 0.000 description 33
- 239000004973 liquid crystal related substance Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 125000006850 spacer group Chemical group 0.000 description 4
- 210000005069 ears Anatomy 0.000 description 3
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 239000011810 insulating material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005411 Van der Waals force Methods 0.000 description 1
- 238000004873 anchoring Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Landscapes
- Liquid Crystal (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The application relates to the technical field of film forming processes of display devices, in particular to a coating method of an alignment liquid and a preparation method of an array substrate. The coating method comprises the following steps: providing a substrate: dividing a precoating area on the surface of the substrate into a first coating area and a second coating area which are adjacent to each other, wherein the first coating area comprises an effective display area and a first peripheral area adjacent to the effective display area, and the second coating area comprises a second peripheral area adjacent to the effective display area; wherein the second peripheral region is adjacent to the binding region, and the first peripheral region is not adjacent to the binding region; the alignment liquid is coated on the first coating area and then coated on the second coating area. The coating process of the coating method can control the diffusion of the alignment liquid to ensure that the alignment liquid is not easy to cover the binding area, and can uniformly cover the effective display area, so that the formed alignment film can reduce the ear light leakage phenomenon of the display panel.
Description
Technical Field
The application belongs to the technical field of film forming processes of display devices, and particularly relates to a coating method of an alignment liquid and a preparation method of an array substrate.
Background
The processes of the liquid crystal display panel are often divided into a color film substrate (CF) process, a thin film transistor array substrate (TFT, thinFilmTransistor) process and a Cell forming process, wherein the CF process flow generally involves a Black Matrix (BM), a color resistor (R/G/B), indium Tin Oxide (ITO) and an alignment film; TFT process flows generally involve a first layer metal (M1), an active layer (GIN), a second layer metal (M2), a protective layer (PV), indium Tin Oxide (ITO), an alignment film; the cell process generally involves a liquid crystal layer and a frame glue. The box forming process is performed after the CF substrate and the TFT substrate are assembled, so that the quality of the box forming process directly influences the quality of the liquid crystal display panel. In the former stage process, the alignment film is a key factor affecting the cell forming process, and the liquid crystal molecules can be orderly oriented due to the physical and chemical interaction forces such as van der Waals force, dipole attraction force, hydrogen bond and the like existing between the alignment film and the liquid crystal molecules. The purpose of alignment is generally four aspects: 1. the liquid crystal molecules are arranged in the same direction, so that a uniform display effect can be obtained; 2. obtaining a pretilt angle and determining a driving direction and a driving speed; 3. the display is stable due to the anchoring energy; 4. good electrical property, and better reaction speed of the liquid crystal.
The alignment film is generally made of Polyimide (PI), and there are two types of coating methods for the alignment film, one type is to transfer the alignment liquid onto the substrate by using a coater (Roller) through a printing plate, and the other type is to spray the alignment liquid directly onto the substrate by using an entire row of printing heads. The coating methods all require uniform coating of alignment liquid and moderate thickness, otherwise, poor alignment of liquid crystal, incapability of controlling the direction of light and poor image quality are caused. However, due to the characteristics of the current alignment liquid self-material, the diffusivity on the substrate is not easy to control, so that the problems of light leakage of the ears of the display panel are easily caused, and especially for a narrow frame, the light leakage of the ears of the panel is more easy to occur.
Disclosure of Invention
The application aims to provide a coating method of alignment liquid and a preparation method of an array substrate, and aims to solve the technical problems that the diffusivity of the alignment liquid during coating is not easy to control and light leakage of ears of a display panel is easy to cause.
In order to achieve the purposes of the application, the technical scheme adopted by the application is as follows:
in a first aspect, the present application provides a method for coating an alignment liquid, including the steps of:
providing a substrate: dividing the precoating area of the surface of the substrate into a first coating area and a second coating area which are adjacent, wherein the first coating area comprises an effective display area and a first peripheral area adjacent to the effective display area, and the second coating area comprises a second peripheral area adjacent to the effective display area; wherein the second peripheral region is adjacent to the binding region and the first peripheral region is not adjacent to the binding region;
the alignment liquid is coated on the first coating area and then coated on the second coating area.
In one embodiment, the first peripheral region and/or the second peripheral region is provided with a groove, the shape of the groove being square, S-shaped or arcuate.
In one embodiment, the grooves communicate to form a complete circle surrounding the active display area; or,
the grooves are distributed in a disconnected mode and surround the effective display area.
In one embodiment, the substrate is further provided with triangular underlayments located in non-recessed areas within the S-shape or arcuate shape of the grooves.
In one embodiment, the effective display area is quadrilateral, the first peripheral area and the second peripheral area form a periphery of the effective display area, a peripheral area adjacent to one side, two sides or three sides of the effective display area is the first peripheral area, and the rest peripheral areas are the second peripheral area.
In one embodiment, the width of the second coating region is greater than or equal to 1000 μm.
In one embodiment, the film structure of the effective display area includes a first metal layer, an insulating layer, an active layer, a second metal layer, a protective layer, and a pixel electrode layer, which are sequentially prepared; the film layer structure of the first peripheral region and the second peripheral region comprises a first metal layer, an insulating layer, a second metal layer and a protective layer which are sequentially prepared.
In one embodiment, the alignment liquid comprises a polyimide solution.
In one embodiment, the polyimide solution has an adhesion of 3 to 4 kg.f/cm 2 。
According to the coating method of the alignment liquid, the precoating area for coating the alignment liquid on the substrate is divided into two areas in advance: a first coating region and a second coating region adjacent to each other, wherein the first coating region includes an effective display region and a first peripheral region (not adjacent to the bonding region), and the second coating region includes a second peripheral region (adjacent to the bonding region); thus, the alignment liquid is coated on the first coating area and then coated on the second coating area. Through the coating process of the sub-regions and the sub-steps, the diffusion of the alignment liquid can be better controlled, so that the alignment liquid is not easy to cover the binding region, the alignment liquid coated by the first coating region can be naturally diffused and uniformly cover the effective display region, and the formed alignment film can reduce the ear light leakage phenomenon of the display panel and has good application prospect.
In a second aspect, the present application provides a method for preparing an array substrate, including the following steps:
sequentially preparing a first metal layer, an insulating layer, an active layer, a second metal layer, a protective layer and a pixel electrode layer on a substrate;
by adopting the coating method, the alignment liquid is coated on the corresponding precoating area on the substrate to obtain the alignment film.
The preparation method of the array substrate adopts a special coating method to coat the alignment liquid on the substrate to obtain an alignment film; the coating method not only can effectively control the diffusion of the alignment liquid, but also can enable the alignment liquid to better cover the effective display area, so that the array substrate obtained by the preparation method can reduce the ear light leakage phenomenon of the display panel when used for the display panel, and has good application prospect.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that 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 a method for coating an alignment liquid according to an embodiment of the present disclosure;
FIG. 2 is a schematic top view of a substrate coated with an alignment liquid according to one embodiment of the present disclosure;
FIG. 3 is a schematic top view of an S-shaped groove on a substrate during alignment liquid coating according to another embodiment of the present application;
FIG. 4 is a schematic top view of a square trench over a substrate during alignment liquid coating according to another embodiment of the present disclosure;
FIG. 5 is a schematic top view of a groove and triangular spacer on a substrate during alignment liquid coating according to yet another embodiment of the present application;
wherein, each reference sign in the figure:
10-a substrate; 11-a first coating zone; 111-an effective display area; 112-a first peripheral region; 12-a second coating zone; 13-binding area; 14-grooves; 15-triangular shaped underlayment.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects to be solved by the present application more clear, the present application is further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the present application.
In this application, the term "and/or" describes an association relationship of an association object, which means that there may be three relationships, for example, a and/or B may mean: a alone, a and B together, and B alone. Wherein A, B may be singular or plural. The character "/" generally indicates that the context-dependent object is an "or" relationship.
It should be understood that, in various embodiments of the present application, the sequence number of each process does not mean that the sequence of execution is sequential, and some or all of the steps may be executed in parallel or sequentially, where the execution sequence of each process should be determined by its functions and internal logic, and should not constitute any limitation on the implementation process of the embodiments 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 terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated for distinguishing between objects such as substances from each other. For example, a first XX may also be referred to as a second XX, and similarly, a second XX may also be referred to as a first XX, without departing from the scope of embodiments of the present application. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.
In a first aspect of the present application, a process of the application of an alignment solution is shown in fig. 1, and a schematic top view of a substrate when the alignment solution is applied is shown in fig. 2, where the application method includes the following steps:
s01: providing a substrate 10: dividing the precoated area on the surface of the substrate 10 into a first coating area 11 and a second coating area 12 which are adjacent, wherein the first coating area 11 comprises an effective display area 111 and a first peripheral area 112 adjacent to the effective display area 111, and the second coating area 12 comprises a second peripheral area (not labeled in the figure) adjacent to the effective display area 111; wherein the second peripheral region is adjacent to the binding region 13, and the first peripheral region 112 is not adjacent to the binding region 13;
s02: the alignment liquid is coated on the first coating region 11 and then on the second coating region 12.
In the method for coating the alignment liquid provided in the embodiment of the present application, the precoating area on the substrate 10 for coating the alignment liquid is divided into two areas in advance: namely, a first coating region 11 and a second coating region 12 adjacent to each other, wherein the first coating region 11 includes an effective display region (AA region) 111 and a first peripheral region 112 adjacent to the effective display region 111 but not adjacent to the bonding region 13, and the second coating region 12 includes a second peripheral region adjacent to the effective display region 111 of the first coating region 11 and simultaneously adjacent to the bonding region 13; thus, the alignment liquid is applied to the first application region 11 and then to the second application region 12. Through the coating process of the sub-regions and the sub-steps, the diffusion of the alignment liquid can be controlled, so that the alignment liquid is not easy to cover the binding region 13, the alignment liquid coated by the first coating region 11 can be naturally diffused, and the effective display region 111 can be uniformly covered, and the formed alignment film can reduce the ear light leakage phenomenon of the display panel, so that the alignment film has good application prospect.
Specifically, the second peripheral region of the second coating region 12 and the first peripheral region 112 of the first coating region 11 described above constitute the periphery of the effective display region 111. The alignment film layer is required on the periphery of the effective display area 111, i.e. the AA area, because the alignment film needs to completely cover the AA area when being coated, so that the alignment film needs to be coated a distance beyond the AA area to allow the alignment film to spread out, but cannot spread to the cover binding area 13; however, if the first coating region 11 and the second coating region 12 are coated once, the application amount and the application speed of the alignment liquid are generally not easy to be precisely controlled due to the larger area of the pre-coating region, so that the diffusivity thereof is easy to be controlled, and the embodiments of the present application creatively find that: by the split-area and step-coating, specifically, the alignment liquid is coated on the first coating area 11 first, even when the alignment liquid has covered the effective display area 111 and the first peripheral area 112 exceeding the effective display area 111 (the first peripheral area 112 is not adjacent to the binding area 13, so that the alignment liquid does not spread to the binding area 13), and then the alignment liquid is coated on the second coating area 12, and the small-area second coating area 12 easily controls the amount and coating speed of the alignment liquid, so that the diffusivity of the alignment liquid on the second coating area 12 can be controlled, so that the alignment liquid is not easily spread to the binding area 13, and at the same time, the alignment liquid coated on the first coating area 11 is further naturally spread, so that the effective display area 111 is uniformly covered.
Specifically, when the alignment liquid is applied to the second application region 12, the alignment liquid may entirely cover the second application region 12, and of course, a distance may be extended from a boundary adjacent to the first application region 11, so that the alignment liquid is uniform in adjacent portions of the first application region and the second application region.
The precoating area is an area prepared for applying the alignment liquid, and does not include the binding area 13. The Bonding pad (Bonding pad) 13 is a Bonding contact pattern area of the display panel for the flip chip Bonding process, and the alignment liquid is coated beyond the effective display area 111 by a distance to allow the Bonding contact pattern area to be spread out, but does not cover the Bonding contact pattern area. In one embodiment, the width of the alignment liquid applied to the second coating region 12 is greater than or equal to 1000 μm, for example, the width of the alignment liquid applied to the second coating region 12 over the AA region is 1000 to 2000 μm.
In one embodiment, the application method of the alignment liquid is used for forming an alignment film, wherein the alignment liquid is a material solution for forming the alignment film, and the alignment liquid is selected from polyimide solutions in the application embodiment. Through the coating method, polyimide solution with better adhesive force can be better diffused, and an alignment film with an AA area uniformly covered is formed. Specifically, the adhesion of conventional polyimide solutions is generally 1 to 2 kg.f/cm 2 The adhesive force of the coating can be 3-4 kg.f/cm 2 Thereby forming a more stable alignment film.
In one embodiment, the effective display area 111 is a quadrangle, such as a square or rectangle, the first peripheral area 112 and the second peripheral area form a periphery of the effective display area 111, a peripheral area adjacent to one side, two sides, or three sides of the effective display area 111 is the first peripheral area, and the remaining peripheral area is the second peripheral area. That is, one side, two sides, or three sides of the effective display area 111 are adjacent to the binding area 13, specifically depending on the actual design of the binding area 13, the side of the effective display area 111 adjacent is the second peripheral area, and the remaining three sides of the effective display area 111 are the first peripheral area 112; two adjacent sides of the effective display area 111 are second peripheral areas, and the remaining two sides of the effective display area 111 are first peripheral areas 112; three adjacent sides of the effective display area 111 are second peripheral areas, and the remaining side of the effective display area 111 is a first peripheral area 112; thus, the second peripheral region of the second coating region 12 and the first peripheral region 112 of the first coating region 11 constitute the periphery of the effective display region 111. Specifically, the second coating region 12 is a second peripheral region.
In one embodiment, the film structure of the effective display area 111 includes: the pixel electrode comprises a first metal layer, an insulating layer, an active layer, a second metal layer, a protective layer and a pixel electrode layer which are sequentially prepared; the first peripheral region 112 and the second peripheral region film layer structure include: the first metal layer, the insulating layer, the second metal layer and the protective layer are sequentially prepared. The material of the first metal layer may be a metal such as Al or Cu, the material of the active layer may be GIN, the material of the second metal layer may be a metal such as Al or Cu, the insulating layer may be an organic insulating material or an inorganic insulating material, the material of the pixel electrode layer is Indium Tin Oxide (ITO), and the insulating layer is a GI insulating layer. The alignment liquid is coated on the first coating region 11 and the second coating region 12 to form an alignment film, so that the effective display region 111 can be effectively covered.
In one embodiment, as shown in fig. 3 and 4, the first peripheral region 111 and/or the second peripheral region of the second coating region 12 is provided with a groove 13, and the groove 13 has a shape of S (see fig. 3), square (see fig. 4), or arcuate. The grooves 13 are designed into square, S-shaped or bow-shaped structures, so that the areas of the grooves can be enlarged, and metal wires can be effectively avoided. The square, S-shaped or arcuate grooves 13 on the periphery of the effective display area 111 are matched on the basis of the coating process of coating the first coating area 11 and then coating the second coating area 12, so that the alignment liquid can flow out better and spread better.
Specifically, the groove 13 may surround the effective display area 111. Specifically, the grooves 13 may be communicated to form a complete circle, surrounding the effective display area 111; alternatively, the grooves 13 may be a broken distribution surrounding the effective display area 111. The grooves 13 of different shapes and layouts can be matched according to actual specific designs, and the grooves 13 can be obtained by exposing, developing and removing the protective layer, or can be obtained by exposing, developing and removing the second metal layer and the protective layer.
In one embodiment, as shown in fig. 5, triangular spacer (Au pad) 14 is further provided on the substrate 10, and the triangular spacer 14 is located in a non-groove region within a square, S-shape or arch of the trench 13. The Au Pad is designed into a triangle shape, and is arranged in a non-groove area, namely a blank area, in a square, S-shaped or arc shape of the groove 13, so that space is saved, and meanwhile, the back flow of the alignment liquid can be effectively prevented. The Au pad may be formed of a second metal layer material; specifically, the resist is formed by exposure, development and etching.
For the display panel with a narrow frame, the difficulty is increased for coating the alignment liquid by the narrower frame, and the application, based on the coating process of coating the first coating region 11 and then coating the second coating region 12, is matched with the square, S-shaped or arch-shaped groove 13 of the peripheral region of the effective display region 111 and the triangular lining 14, so that the diffusion of the alignment liquid can be better controlled, the coverage of the binding region can be prevented, and the backflow into the AA region can be prevented, thereby enabling the AA region to be more uniformly and comprehensively covered, and therefore, the application can be better practical in the display panel with a narrow frame.
Therefore, the coating method provided in the embodiment of the present application can effectively improve the diffusivity of the alignment liquid by coating the alignment liquid in the divided areas, i.e. coating the first coating area 11 and then coating the second coating area 12, and simultaneously matching with the square, S-shaped or arcuate grooves 13 and the triangular spacers 14, so that the alignment liquid uniformly covers the effective display area 111, thereby significantly improving the ear light leakage of the display panel.
The second aspect of the embodiment of the application also provides a preparation method of the array substrate, which comprises the following steps:
t01: sequentially preparing a first metal layer, an insulating layer, an active layer, a second metal layer, a protective layer and a pixel electrode layer on a substrate;
t02: by adopting the coating method of the alignment liquid, the alignment liquid is coated on the corresponding precoating area on the substrate to obtain the alignment film.
The preparation method of the array substrate provided by the embodiment of the application adopts the coating method of the embodiment of the application to coat the alignment liquid on the substrate to obtain the alignment film; the coating method not only can effectively control the diffusion of the alignment liquid, but also can enable the alignment liquid to better cover the effective display area, so that the array substrate obtained by the preparation method can reduce the ear light leakage phenomenon of the display panel when used for the display panel, and has good application prospect.
Specifically, a first metal layer, an insulating layer, an active layer, a second metal layer, a protective layer and a pixel electrode layer are sequentially prepared on a substrate; dividing the array of pre-coat areas for substantially applying alignment liquid into adjacent first and second coated areas 11, 12, the first coated area 11 comprising an effective display area 111 and a first peripheral area 12 (not adjacent to the binding area 13), the second coated area 12 comprising a second peripheral area (adjacent to the binding area 13); the film structure of the effective display area 111 includes the first metal layer, the insulating layer, the active layer, the second metal layer, the protective layer, and the pixel electrode layer, which are sequentially prepared as described above; and the peripheral film layer structure formed by the first peripheral region 112 and the second peripheral region includes the first metal layer, the insulating layer, the second metal layer and the protective layer sequentially prepared as described above. Then, the alignment liquid is coated on the corresponding pre-coating area through the coating process of the sub-area and the sub-step, and the alignment film is obtained. The preparation method forms the alignment film uniformly covering the effective display area by controlling the diffusion of the alignment liquid, thereby reducing the ear light leakage phenomenon of the display panel and having good application prospect.
It should be noted that, the preparation method of the array substrate provided in the embodiment of the present application uses the application method of the alignment liquid to prepare the alignment film, so that the alternative schemes of the application method of the alignment liquid can be used in the preparation method of the array substrate, and the preparation method of the array substrate has all the advantages of the application method of the alignment liquid provided in the embodiment and is not described herein again.
The foregoing description of the preferred embodiments of the present application is not intended to be limiting, but is intended to cover any and all modifications, equivalents, and alternatives falling within the spirit and principles of the present application.
Claims (10)
1. A method for coating an alignment liquid, comprising the steps of:
providing a substrate: dividing the precoating area of the surface of the substrate into a first coating area and a second coating area which are adjacent, wherein the first coating area comprises an effective display area and a first peripheral area adjacent to the effective display area, and the second coating area comprises a second peripheral area adjacent to the effective display area; the precoating area does not comprise a binding area and is used for coating alignment liquid, the second peripheral area is adjacent to the binding area, and the first peripheral area is not adjacent to the binding area;
the alignment liquid is coated on the first coating area and then coated on the second coating area.
2. The coating method according to claim 1, wherein the first peripheral region and/or the second peripheral region is provided with a groove, and the groove has a square, S-shaped or arcuate shape.
3. The coating method of claim 2, wherein the grooves communicate to form a complete circle surrounding the active display area; or,
the grooves are distributed in a disconnected mode and surround the effective display area.
4. The coating method of claim 2, wherein the substrate is further provided with triangular underlayments positioned in non-recessed areas within the square, S-shape or arcuate shape of the grooves.
5. The coating method of any one of claims 1 to 4, wherein the effective display area is quadrangular, the first peripheral area and the second peripheral area constitute a periphery of the effective display area, a peripheral area adjacent to one side, both sides, or three sides of the effective display area is the first peripheral area, and the remaining peripheral area is the second peripheral area.
6. The coating process according to any one of claims 1 to 4, wherein the width of the second coating zone is greater than or equal to 1000 μm.
7. The coating method according to any one of claims 1 to 4, wherein the film layer structure of the effective display region includes a first metal layer, an insulating layer, an active layer, a second metal layer, a protective layer, and a pixel electrode layer, which are sequentially prepared; the film layer structure of the first peripheral region and the second peripheral region comprises a first metal layer, an insulating layer, a second metal layer and a protective layer which are sequentially prepared.
8. The coating method according to any one of claims 1 to 4, wherein the alignment liquid comprises a polyimide solution.
9. The coating method according to claim 8, wherein the polyimide solution has an adhesion of 3 to 4 kg. F/cm 2 。
10. The preparation method of the array substrate is characterized by comprising the following steps of:
sequentially preparing a first metal layer, an insulating layer, an active layer, a second metal layer, a protective layer and a pixel electrode layer on a substrate;
coating an alignment liquid on the substrate corresponding to the pre-coating area by the coating method according to any one of claims 1 to 9 to obtain an alignment film.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111639936.5A CN114326217B (en) | 2021-12-29 | 2021-12-29 | Coating method of alignment liquid and preparation method of array substrate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111639936.5A CN114326217B (en) | 2021-12-29 | 2021-12-29 | Coating method of alignment liquid and preparation method of array substrate |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114326217A CN114326217A (en) | 2022-04-12 |
| CN114326217B true CN114326217B (en) | 2023-04-25 |
Family
ID=81016000
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111639936.5A Active CN114326217B (en) | 2021-12-29 | 2021-12-29 | Coating method of alignment liquid and preparation method of array substrate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114326217B (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085324A (en) * | 2017-06-09 | 2017-08-22 | 厦门天马微电子有限公司 | Substrate and the liquid crystal display panel comprising it |
| CN110308593A (en) * | 2019-06-12 | 2019-10-08 | 惠科股份有限公司 | Method for manufacturing alignment film |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5520614B2 (en) * | 2010-01-15 | 2014-06-11 | 株式会社ジャパンディスプレイ | Liquid crystal display device and manufacturing method thereof |
| CN104155805A (en) * | 2014-07-25 | 2014-11-19 | 京东方科技集团股份有限公司 | Preparation method of aligned film |
| CN104898326B (en) * | 2015-06-05 | 2018-08-07 | 深圳市华星光电技术有限公司 | A kind of forming method of alignment film |
| CN106383421A (en) * | 2016-11-07 | 2017-02-08 | 深圳市华星光电技术有限公司 | Manufacturing method of alignment film, display panel and display device |
| CN106773339A (en) * | 2017-01-22 | 2017-05-31 | 京东方科技集团股份有限公司 | The printing transferring method and display panel of a kind of transfer plate, transfer plate |
| CN209343099U (en) * | 2018-12-05 | 2019-09-03 | 惠科股份有限公司 | Display panel and display device |
-
2021
- 2021-12-29 CN CN202111639936.5A patent/CN114326217B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107085324A (en) * | 2017-06-09 | 2017-08-22 | 厦门天马微电子有限公司 | Substrate and the liquid crystal display panel comprising it |
| CN110308593A (en) * | 2019-06-12 | 2019-10-08 | 惠科股份有限公司 | Method for manufacturing alignment film |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114326217A (en) | 2022-04-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6888608B2 (en) | Liquid crystal display device | |
| WO2013078726A1 (en) | Substrate of liquid crystal display device, liquid crystal display device, and manufacturing method thereof | |
| TWI454807B (en) | Display panel and method for manufacturing the same | |
| KR101386574B1 (en) | Liquid crystal display device | |
| TWM245450U (en) | Liquid crystal device and electronic machine | |
| TW200535505A (en) | Liquid crystal display | |
| US10274788B2 (en) | Display substrate, method for manufacturing the same and liquid crystal display device | |
| WO2015158052A1 (en) | Large board electrified circuit and manufacturing method therefor | |
| CN114326217B (en) | Coating method of alignment liquid and preparation method of array substrate | |
| CN103235444A (en) | Display device, color film substrate and manufacturing method of color film substrate | |
| WO2018119821A1 (en) | Built-in touch panel and display device | |
| US7579043B2 (en) | Method of manufacturing substrate for liquid crystal display device | |
| WO2020042869A1 (en) | Polyimide coating method for liquid crystal display panel | |
| KR100515810B1 (en) | Method of forming a seal pattern for liquid crystal display device | |
| KR20130024201A (en) | Liquid crystal display device of mother substate and manufactucring metod of the same | |
| CN112764273A (en) | Array substrate and display panel | |
| US8277593B2 (en) | Printing plate and method of fabricating liquid crystal display device using the same | |
| CN207337023U (en) | Display panel and display device | |
| KR101147123B1 (en) | Liquid Crystal Display Device | |
| US7446846B2 (en) | Liquid crystal display device and fabrication method thereof | |
| TWI548919B (en) | Display panels | |
| CN212276188U (en) | Array substrate, display panel and display device | |
| CN112198693B (en) | Display panel and mother board | |
| JP4045950B2 (en) | Liquid crystal element | |
| KR20050114141A (en) | Liquid crystal display device and method of fabricating the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |