CN114624913A - Display panel manufacturing method and device and display panel - Google Patents
Display panel manufacturing method and device and display panel Download PDFInfo
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- CN114624913A CN114624913A CN202210305053.9A CN202210305053A CN114624913A CN 114624913 A CN114624913 A CN 114624913A CN 202210305053 A CN202210305053 A CN 202210305053A CN 114624913 A CN114624913 A CN 114624913A
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- 238000000576 coating method Methods 0.000 claims abstract description 44
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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
-
- 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
- G02F1/1303—Apparatus specially adapted to the manufacture of LCDs
-
- 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
-
- 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
- G02F1/1339—Gaskets; Spacers; Sealing of cells
-
- 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
- G02F1/1341—Filling or closing of cells
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- Physics & Mathematics (AREA)
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- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Mathematical Physics (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
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- Devices For Indicating Variable Information By Combining Individual Elements (AREA)
Abstract
The invention discloses a display panel manufacturing method and device and a display panel. The manufacturing method of the display panel comprises the following steps: firstly, providing two substrates, and coating oily polymer on a connecting area of the substrates to form an oily polymer layer, wherein the connecting area is a part connected with a display area of the substrates in a non-display area of the substrates; then coating the alignment film material on the display area and at least part of the area of the oily polymer layer, so that the alignment film material forms an alignment film on the display area and does not form the alignment film on the oily polymer layer; then removing the oily polymer layer on the substrate and the alignment film material without the alignment film; and finally, coating the frame glue on the connecting area to enable the two substrates to be aligned to form the display panel. The invention can ensure that the frame glue is not connected with the alignment film but directly connected with the two substrates under the condition of keeping the thickness of the alignment film uniform, so that the frame glue can form good supporting and protecting effects on the two substrates, and the display panel is prevented from cracking.
Description
Technical Field
The invention relates to the technical field of display, in particular to a display panel manufacturing method and device and a display panel.
Background
In a liquid crystal display panel, an alignment liquid is generally coated on a TFT (thin film transistor) array substrate and a color film substrate to form an alignment film. The alignment film is used for providing a pretilt bearing angle for liquid crystal molecules.
At present, liquid crystal display panels are developed towards extremely narrow frames, and in the process of manufacturing narrow-frame display panels, the frame glue between the TFT array substrate and the color film substrate and the alignment film have an overlapping portion, that is, a portion of the frame glue is connected with the alignment film. The frame glue and the alignment film are not enough in binding force, so that the two substrates are easy to crack, and water vapor and impurities easily enter the display panel through a gap between the alignment film and the frame glue to influence the display effect of the display panel.
Disclosure of Invention
In view of the above-mentioned deficiencies in the prior art, an object of the present invention is to provide a method and an apparatus for manufacturing a display panel, which can prevent the display panel from cracking.
In order to achieve the above object, the present invention first provides a method for manufacturing a display panel, including:
providing two substrates, and coating oily polymer on a connecting area of the substrates to form an oily polymer layer, wherein the connecting area is a part connected with a display area of the substrates in a non-display area of the substrates;
coating an alignment film material on the display area and at least part of the area of the oily polymer layer, so that the alignment film material forms an alignment film on the display area and does not form the alignment film on the oily polymer layer;
removing the oily polymer layer on the substrate and the alignment film material without the alignment film to expose the surface of the connection region;
and coating the frame glue on the connecting area to enable the two substrates to form the display panel.
Optionally, the step of coating the sealant on the connection region to make the two substrates paired into the box to form the display panel includes:
coating the frame glue on the connecting region to connect the frame glue between the two substrates;
filling liquid crystal between the alignment films of the two substrates to form a liquid crystal layer;
and curing the frame glue to enable the two substrates to form the display panel.
Optionally, after the step of coating the alignment film material on the display region and on at least a partial region of the oily polymer layer, the method comprises:
baking the alignment film material to solidify the alignment film material on the display area to form the alignment film.
Optionally, the step of baking the alignment film material includes:
pre-baking the alignment film material;
and carrying out main baking on the pre-baked alignment film material.
Optionally, the temperature range of the main baking is 220 ℃ to 250 ℃.
Optionally, the time for the main baking ranges from 20 minutes to 40 minutes.
The invention also provides a display panel manufacturing device, comprising:
an oily polymer coating unit for providing two substrates and coating oily polymer on a connection region of the substrates to form an oily polymer layer, the connection region being a portion of the non-display region of the substrates connected with the display region of the substrates;
the alignment film material coating unit is used for coating the alignment film material on the display area and at least partial area of the oily polymer layer, so that the alignment film material forms an alignment film on the display area, and the alignment film is not formed on the oily polymer layer;
the cleaning unit is used for cleaning the oily polymer layer on the substrate and the alignment film material without the alignment film so as to expose the surface of the connecting region;
and the box aligning unit is used for coating the frame glue on the connecting area so that the two substrates are aligned to form the display panel.
Optionally, the pair of cartridge units comprises:
the frame glue coating unit is used for coating frame glue on the connecting area so as to connect the frame glue between the two substrates;
the liquid crystal filling unit is used for filling liquid crystal between the alignment films of the two substrates to form a liquid crystal layer;
and the frame glue curing unit is used for curing the frame glue so that the two substrates form the display panel in a box-to-box manner.
Optionally, the display panel manufacturing apparatus further includes an alignment film baking unit, configured to bake the alignment film material, so that the alignment film material is cured on the display area to form an alignment film.
The invention also provides a display panel, which is obtained by the display panel manufacturing method or the display panel manufacturing device.
Compared with the prior art, the invention has the beneficial effects that: firstly, providing two substrates, and coating an oily polymer on a connection area of the substrates to form an oily polymer layer, wherein the connection area is a part connected with a display area of the substrates in a non-display area of the substrates; then coating the alignment film material on the display area and at least part of the area of the oily polymer layer, so that the alignment film material forms an alignment film on the display area and does not form the alignment film on the oily polymer layer; then removing the oily polymer layer on the substrate and the alignment film material without the alignment film to expose the surface of the connection region; finally, the frame glue is coated on the connecting area, so that the two substrates form the display panel in a box-to-box mode. Through the steps of the method, the frame glue is not overlapped with the alignment film but directly connected with the two substrates under the condition of keeping the thickness of the alignment film uniform, so that the frame glue can form good supporting and protecting effects on the two substrates, and the problems that the two substrates are easy to crack due to insufficient bonding force of the frame glue and the alignment film, and water vapor and impurities easily enter the display panel through a gap between the alignment film and the frame glue to influence the display panel are solved.
Drawings
In order to illustrate the embodiments or the technical solutions in the prior art more clearly, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the invention, and it is obvious for a person skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic diagram of a conventional display panel in a frame region;
FIG. 2 is a schematic structural diagram of a conventional display panel in a crack condition;
FIG. 3 is a first flowchart illustrating a method for fabricating a display panel according to an embodiment of the present invention;
FIG. 4 is a first top view of a display panel according to an embodiment of the present invention;
FIG. 5 is a layout diagram of an oily polymer according to an embodiment of the present invention;
fig. 6 is a cross-sectional view of an alignment film material of an embodiment of the present invention;
FIG. 7 is a layout view of an alignment film according to an embodiment of the present invention;
FIG. 8 is a top view of an alignment film material according to an embodiment of the present invention;
FIG. 9 is a top view of the frame sealant according to the embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a frame region of a display panel according to an embodiment of the present invention;
FIG. 11 is a second flowchart illustrating a method for fabricating a display panel according to an embodiment of the present invention;
FIG. 12 is a block diagram of an apparatus for fabricating a display panel according to an embodiment of the present invention;
FIG. 13 is a block diagram of a pair and cell according to an embodiment of the present invention.
Detailed Description
The following description of the various embodiments refers to the accompanying drawings that illustrate specific embodiments in which the invention may be practiced. In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. Meanwhile, the terms "first" and "second" in the present invention are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In a Liquid Crystal Display (LCD), an alignment liquid, such as PI (Polyimide), is usually coated on a thin film transistor substrate and a color filter substrate to form an alignment film, and a pretilt angle is formed on the alignment film by Rubbing (Rubbing) or photo etching, so as to provide a bearing angle for liquid crystal molecules.
The normal liquid crystal display panel design adopts a PI coating area slightly smaller than the coating area of the frame glue, and the frame glue is positioned outside the PI area.
However, the liquid crystal display panel is developed toward a very narrow frame, and in the process of manufacturing the narrow frame display panel, the distance between the sealant a and the display area needs to be reduced as much as possible. However, the polyimide coating edge area is usually poor in precision and has a large uneven area, so as to avoid the poor alignment of the liquid crystal due to the polyimide coating problem, as shown in fig. 1, the substrate is usually required to be coated with polyimide, and the sealant a is directly coated on the polyimide layer B, resulting in the overlapping of the sealant a and the polyimide layer B. As shown in fig. 2, the frame adhesive a and the polyimide layer B (alignment film) have insufficient adhesion, so that the two substrates are easily cracked, and water vapor and impurities easily enter the display panel through the gap between the alignment film and the frame adhesive, thereby affecting the display effect of the display panel.
An embodiment of the present invention provides a method for manufacturing a display panel to solve the above problem, and as shown in fig. 3, the method of the present embodiment includes steps 100, 200, 300, and 400. The method comprises the following specific steps:
In the above step, the two substrates 1 may be both glass substrates 1, and the two substrates 1 include a thin film transistor array substrate 1 and a color film substrate 1. The two substrates 1 each include a display region 11 and a non-display region 12. The non-display area 12 is in a frame area of the substrate 1, and the non-display area 12 is in a periphery of the display area 11.
In step 200, as shown in fig. 6 and 7, the alignment film material 30 is coated on the display region 11 and at least a partial region of the oily polymer layer 2, such that the alignment film material 30 forms the alignment film 3 on the display region 11 and does not form the alignment film 3 on the oily polymer layer 2.
In the above step, the alignment film material 30 may be polyimide. In this embodiment, since polyimide cannot be formed on the surface of the oily polymer, polyimide can be formed only on the display region 11 without the oily polymer in the process of forming the alignment film 3 on the substrate 1. And the thickness of the alignment film 3 formed in this way is uniform, especially the thickness of the edge area of the alignment film 3 is uniform, so that the normal display effect of the liquid crystal display panel can be ensured.
In one embodiment, the oily polymer layer 2 may be coated over the entire non-display region 12, or may be coated only on the connection region 121. On the other hand, as shown in fig. 8, polyimide may be coated over the entire substrate 1, or covered with the oily polymer layer 2, which may ensure uniform thickness of the alignment film 3 on the display region 11.
In the above step, the polyimide and the oily polymer on the non-display region 12 may be completely removed by an ODF (One Drop Filling) pre-cleaning process.
In step 400, as shown in fig. 9 and 10, the sealant 4 is coated on the connection region 121, so that the two substrates 1 form a display panel by a pair of boxes. The sealant 4 and the alignment film 3 are not overlapped.
In the above steps, the material of the frame glue 4 contains thermosetting resin components, and through ultraviolet light curing or thermal baking curing, the material has higher curing density compared with PI, can have very good adhesion with the glass substrate 1(ITO, silicon nitride and other inorganic layers), and has very good blocking effect on water and oxygen, so that the circuit of the array substrate 1 inside the LCD can be well protected from being corroded by water and oxygen, and enough bonding force of the two substrates 1 can be provided, and the two substrates cannot crack easily, and the like.
In one embodiment, as shown in fig. 11, step 400 further includes step 401, step 402 and step 403, which are as follows:
In step 402, liquid crystal is injected between the alignment films 3 of the two substrates 1 to form a liquid crystal layer.
Through the steps, the frame glue 4 is not connected with the alignment film 3, but is directly connected with the two substrates 1, so that the frame glue 4 can have good supporting and protecting effects on the two substrates 1.
In one embodiment, after step 200, the method further comprises:
the alignment film material 30 is baked to solidify the alignment film material 30 on the display region 11 to form the alignment film 3.
In one embodiment, the step of baking the alignment film material 30 includes:
the alignment film material 30 is first pre-baked.
And then, performing main baking on the pre-baked alignment film material 30. Wherein the temperature range of the main baking is 220 ℃ to 250 ℃. The main baking time ranges from 20 minutes to 40 minutes. This makes it possible to form the alignment film 3 sufficiently by the alignment film material 30.
In one embodiment, a method for manufacturing a display panel according to an embodiment of the present invention includes:
first, two substrates 1 are provided, and an oily polymer is coated on a connection region 121 of the substrate 1 to form an oily polymer layer 2, the connection region 121 being a portion of the non-display region 12 of the substrate 1 connected to the display region 11 of the substrate 1.
Then, polyimide is coated on the display region 11 and a partial region of the oily polymer layer 2, and the polyimide is subjected to a main baking and baking to form the alignment film 3 only on the display region 11, and not to form the alignment film 3 on the oily polymer layer 2.
Then, the polyimide and the oily polymer on the non-display region 12 were all removed by the pre-ODF cleaning process, so that the surface of the connection region 121 was exposed.
Finally, the sealant 4 is coated on the connection region 121, so that the sealant 4 is connected between the two substrates 1. Liquid crystal is injected between the alignment films 3 of the two substrates 1 to form a liquid crystal layer. And curing the frame glue 4 to enable the two substrates 1 to form the display panel by the box.
Through the steps of the method, the frame glue 4 is not overlapped with the alignment film 3 but directly connected with the two substrates 1 under the condition that the thickness of the alignment film 3 is kept uniform, so that the frame glue 4 has good supporting and protecting effects on the two substrates 1, and the problems that the frame glue 4 is not enough in bonding force with the alignment film 3, the two substrates 1 are easy to crack, and water vapor and impurities are easy to enter the display panel through the gap between the alignment film 3 and the frame glue 4 to influence the display panel are solved.
The embodiment of the invention also provides a manufacturing method of the alignment film, which comprises the following steps:
first, a polyimide layer is formed by applying a polyimide solution to a substrate.
Then, the polyimide layer is subjected to exposure treatment.
Finally, the exposed polyimide layer is subjected to development treatment to obtain the alignment film 3.
In the process of manufacturing the alignment film, firstly, photosensitive polyimide liquid is coated on a substrate and is solidified to form a polyimide layer, then, a mask plate is utilized to carry out exposure treatment on the polyimide layer, and finally, the exposed polyimide layer is developed to dissolve and remove soluble parts, so that a plurality of polyimide patterns which are spaced from each other and are arranged along the same direction are obtained.
The photosensitive polyimide solution is applied to the substrate in a bulk manner, so that the polyimide layer obtained has a better film thickness uniformity, and can be applied by various means such as spraying, spin coating, printing, etc., and then cured by heating to form the polyimide layer as a whole.
The photosensitive polyimide solution used in the embodiment of the present invention may be liquid positive photosensitive polyimide or negative photosensitive polyimide.
The negative photosensitive polyimide is soluble in developing solution in normal conditions, after exposure of an exposure area on a mask plate, the exposed area undergoes a cross-linking reaction, so that the solubility performance is reduced or the negative photosensitive polyimide is insoluble, at the moment, a proper developing solution is selected to dissolve and remove a non-exposure area, and the exposure area is reserved to be a required photoetching pattern. The negative photosensitive polyimide generally used is one or more of ester type polyimide, ionic type polyimide and self-sensitizing polyimide.
On the contrary, the positive photosensitive polyimide is insoluble in a developing solution under the conventional condition, after the exposure of the mask plate, the exposed area of the positive photosensitive polyimide is subjected to a crosslinking reaction to be soluble in the developing solution, at the moment, the exposed area can be dissolved and removed by selecting a proper developing solution, and the non-exposed area is reserved to be a required photoetching pattern. The positive photosensitive polyimide generally used is one or more of nitrobenzyl esters, polyisoimides, and cyclobutylimide resins.
The developing solution used in the invention is an aprotic strong polar solution, and can be selected from one or more of Tetrahydrofuran (THF), N-Dimethylformamide (DMF), N-methyl-2-pyrrolidone (NMP) and dimethyl sulfoxide.
After development treatment, the substrate and a plurality of polyimide patterns which are arranged on the substrate at intervals and along the same direction are obtained, thereby forming the alignment film 3 with a preset pattern, the dimension precision, namely the patterning precision of the polyimide can reach 4-10 μm, and the interval between two adjacent polyimide patterns is twice of the dimension precision and is far smaller than the patterning precision of the polyimide patterns formed by spraying or heating and curing after printing in the prior art (500-.
Through the steps of the method, the alignment film is subjected to patterning treatment through exposure to obtain the required alignment film pattern, compared with the existing process conditions, the patterning precision of the obtained alignment film can reach the micron level, the requirement of the existing narrow frame of the TFT-LCD panel can be met, meanwhile, due to the fact that the polyimide is subjected to patterning treatment after being coated integrally, the film thickness uniformity is better, and the influence on the edge display picture quality is avoided.
An embodiment of the invention provides a display panel manufacturing apparatus, as shown in fig. 12, including an oily polymer coating unit 500, an alignment film material coating unit 600, a cleaning unit 700, and a box aligning unit 800. Wherein:
the oily polymer coating unit 500 is used to provide two substrates 1 and coat oily polymer on a connection region 121 of the substrate 1 to form an oily polymer layer 2, the connection region 121 being a portion of the non-display region 12 of the substrate 1 connected to the display region 11 of the substrate 1.
The alignment film material coating unit 600 is configured to coat the alignment film material 30 on the display area 11 and at least a partial region of the oily polymer layer 2, so that the alignment film material 30 forms the alignment film 3 on the display area 11 and does not form the alignment film 3 on the oily polymer layer 2.
The cleaning unit 700 is used to clean the oily polymer layer 2 on the substrate 1 and the alignment film material 30 without the alignment film 3 formed thereon, so as to expose the surface of the connection region 121.
The box aligning unit 800 is used for coating the sealant 4 on the connection region 121, so that the two substrates 1 are aligned to form a display panel.
In one embodiment, as shown in fig. 13, the box aligning unit 800 specifically includes a sealant coating unit 801, a liquid crystal filling unit 802, and a sealant curing unit 803, wherein:
the sealant coating unit 801 is configured to coat the sealant 4 on the connection region 121, so that the sealant 4 is connected between the two substrates 1.
The liquid crystal filling unit 802 is used to fill liquid crystal between the alignment films 3 of the two substrates 1 to form a liquid crystal layer.
The sealant curing unit 803 is configured to cure the sealant 4, so that the two substrates 1 form a display panel.
In an embodiment, the apparatus for manufacturing a display panel further includes a baking unit for baking the alignment film material 30, so that the alignment film material 30 is cured on the display region 11 to form the alignment film 3.
The display panel manufacturing apparatus according to the embodiment of the present invention adopts the display panel manufacturing method provided in the above embodiment, first providing two substrates 1, and applying an oily polymer on a connection region 121 of the substrate 1 to form an oily polymer layer 2, where the connection region 121 is a portion of the non-display region 12 of the substrate 1 connected to the display region 11 of the substrate 1; then coating the alignment film material 30 on the display area 11 and at least a partial area of the oily polymer layer 2, so that the alignment film material 30 forms the alignment film 3 on the display area 11 and does not form the alignment film 3 on the oily polymer layer 2; then removing the oily polymer layer 2 on the substrate 1 and the alignment film material 30 without the alignment film 3 formed thereon, so as to expose the surface of the connection region 121; finally, the sealant 4 is coated on the connection region 121, so that the two substrates 1 form a display panel by a pair of boxes.
The display panel manufacturing device of the embodiment can ensure that the frame glue 4 is not overlapped with the alignment film 3 but directly connected with the two substrates 1 under the condition of keeping the uniform thickness of the alignment film 3, so that the frame glue 4 can well support and protect the two substrates 1, the problem that the bonding force between the frame glue 4 and the alignment film 3 is insufficient, the two substrates 1 are easy to crack, and water vapor and impurities easily enter the display panel through the gap between the alignment film 3 and the frame glue 4 to influence the display panel is solved.
The invention also provides a display panel, which is obtained by the display panel manufacturing method or the display panel manufacturing device.
The display panel of the embodiment is specifically a liquid crystal display panel. The thickness of the alignment film 3 is kept uniform, meanwhile, the frame glue 4 is not overlapped with the alignment film 3 and is directly connected with the two substrates 1, the frame glue 4 has good supporting and protecting effects on the two substrates 1, the problem that the frame glue 4 and the alignment film 3 are not enough in binding force, so that the two substrates 1 are easy to crack, and water vapor and impurities easily enter the display panel through a gap between the alignment film 3 and the frame glue 4 to influence the display panel is solved.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. A method for manufacturing a display panel is characterized by comprising the following steps:
providing two substrates, and coating oily polymer on a connection area of the substrates to form an oily polymer layer, wherein the connection area is a part connected with a display area of the substrates in a non-display area of the substrates;
coating an alignment film material on the display area and at least part of the area of the oily polymer layer, so that the alignment film material forms an alignment film on the display area and does not form an alignment film on the oily polymer layer;
removing the oily polymer layer on the substrate and the alignment film material without the alignment film, so as to expose the surface of the connection region;
and coating frame glue on the connecting area to enable the two substrates to form a display panel in a box-to-box mode.
2. The method for manufacturing a display panel according to claim 1, wherein the step of coating the sealant on the connection region to make the two substrate pair boxes constitute the display panel comprises:
coating frame glue on the connecting area so as to connect the frame glue between the two substrates;
filling liquid crystal between the alignment films of the two substrates to form a liquid crystal layer;
and curing the frame glue to enable the two substrates to form the display panel.
3. The method for manufacturing a display panel according to claim 1, wherein after the step of coating an alignment film material on the display region and at least a partial region of the oily polymer layer, the method comprises:
and baking the alignment film material to solidify the alignment film material on the display area to form an alignment film.
4. The method for manufacturing a display panel according to claim 3, wherein the step of baking the alignment film material includes:
pre-baking the alignment film material;
and carrying out main baking on the pre-baked alignment film material.
5. The method for manufacturing a display panel according to claim 4, wherein the temperature range of the main baking is 220 ℃ to 250 ℃.
6. The method for manufacturing a display panel according to claim 4, wherein the main baking time is in a range of 20 minutes to 40 minutes.
7. A display panel manufacturing apparatus, comprising:
an oily polymer coating unit, which is used for providing two substrates and coating oily polymer on a connection area of the substrates to form an oily polymer layer, wherein the connection area is a part connected with a display area of the substrates in a non-display area of the substrates;
the alignment film material coating unit is used for coating an alignment film material on the display area and at least partial area of the oily polymer layer, so that the alignment film material forms an alignment film on the display area, and no alignment film is formed on the oily polymer layer;
a cleaning unit for cleaning the oily polymer layer on the substrate and an alignment film material without an alignment film formed thereon to expose the surface of the connection region;
and the box aligning unit is used for coating the frame glue on the connecting area so that the two substrates are aligned to form the display panel.
8. The display panel production apparatus according to claim 7, wherein the pair of cassette units includes:
the frame glue coating unit is used for coating frame glue on the connecting area so as to connect the frame glue between the two substrates;
the liquid crystal filling unit is used for filling liquid crystal between the alignment films of the two substrates to form a liquid crystal layer;
and the frame glue curing unit is used for curing the frame glue so that the two substrates form a display panel in a box-to-box mode.
9. The device for manufacturing a display panel according to claim 7, further comprising an alignment film baking unit configured to bake the alignment film material so that the alignment film material is cured on the display area to form an alignment film.
10. A display panel obtained by the display panel manufacturing method according to any one of claims 1 to 6, or obtained by the display panel manufacturing apparatus according to any one of claims 7 to 9.
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