CN109407411A - Alignment film coating method and liquid crystal display panel - Google Patents
Alignment film coating method and liquid crystal display panel Download PDFInfo
- Publication number
- CN109407411A CN109407411A CN201811386975.7A CN201811386975A CN109407411A CN 109407411 A CN109407411 A CN 109407411A CN 201811386975 A CN201811386975 A CN 201811386975A CN 109407411 A CN109407411 A CN 109407411A
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- Prior art keywords
- alignment film
- frame glue
- liquid crystal
- substrate
- crystal display
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Classifications
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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
-
- 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
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- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Mathematical Physics (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Liquid Crystal (AREA)
Abstract
The present invention provides a kind of alignment film coating method and liquid crystal display panel.The alignment film coating method on underlay substrate by forming alignment film, a part of edge of the alignment film is recessed to the direction far from underlay substrate edge to form multiple white spaces, it is subsequent that frame glue is formed on underlay substrate, a part of frame glue can be made Nian Jie with alignment film, another part is Nian Jie with underlay substrate by multiple white spaces of alignment film, prevent frame glue whole all Nian Jie with alignment film, reducing alignment film influences the adhesion strength of frame glue.
Description
Technical field
The present invention relates to field of display technology more particularly to a kind of alignment film coating methods and liquid crystal display panel.
Background technique
Thin film transistor (TFT) (Thin Film Transistor, TFT) is current liquid crystal display device (Liquid Crystal
Display, LCD) and active matrix drive type organic electroluminescence display device and method of manufacturing same (Active Matrix Organic Light-
Emitting Diode, AMOLED) in main driving element, the display performance of direct relation panel display apparatus.
Liquid crystal display on existing market is largely backlight liquid crystal display comprising liquid crystal display panel and back
Optical mode group (backlight module).The working principle of liquid crystal display panel is in thin-film transistor array base-plate (Thin
Film Transistor Array Substrate, TFT Array Substrate) and colored filter (Color
Filter, CF) liquid crystal molecule is poured between substrate, and apply pixel voltage and common voltage respectively on two plate bases, pass through
The direction of rotation of the electric field controls liquid crystal molecule formed between pixel voltage and common voltage transmits the light of backlight module
Picture is generated out.
For liquid crystal display panel during production, for liquid crystal display panel during production, alignment technique is that a comparison is crucial
Technology, in production at this stage, need to form one layer of alignment film on tft array substrate and CF substrate, then to alignment film
It carries out orientation and makes it have optical anisotropy, which can carry out inclination angle processing to liquid crystal molecule.It is in the prior art
Liquid crystal display panel alignment film coating method is rectangle coating method, as shown in Figures 1 and 2, in the viewing area of underlay substrate 10 '
The alignment film 30 ' that shape is rectangle is coated in (area AA) 20 ', however the liquid at the edge of alignment film 30 ' can be spread automatically, be formed
One piece of membrane thickness unevenness region 31 ', which, which understands some, to fall in viewing area 20 ', because of liquid
Principle is inside contracted, the membrane thickness unevenness region 31 ' in four corners can be more serious, therefore will lead to liquid crystal display panel edge and generate mura
Bad problem.
As shown in figure 3, another kind liquid crystal display panel alignment film coating method in the prior art is in order to avoid membrane thickness unevenness
Region 31 ' is fallen in viewing area 20 ', therefore the edge of alignment film 30 ' is extended out, however the edge of alignment film 30 ' is extended out and can be led
It causes alignment film 30 ' Chong Die with frame glue, to reduce the adhesive force of frame glue, therefore can have liquid crystal display panel and peel off (peeling)
Risk.
Summary of the invention
The purpose of the present invention is to provide a kind of alignment film coating methods, prevent frame glue whole all Nian Jie with alignment film,
Reducing alignment film influences the adhesion strength of frame glue.
The object of the invention is also to provide a kind of liquid crystal display panels, prevent frame glue whole all Nian Jie with alignment film, reduce
Alignment film influences the adhesion strength of frame glue.
To achieve the above object, the present invention provides a kind of alignment film coating method, include the following steps:
Step S1, underlay substrate is provided, forms alignment film on the underlay substrate；A part of edge of the alignment film to
Direction far from underlay substrate edge is recessed to form multiple white spaces；
Step S2, frame glue is formed on the underlay substrate, the marginal adhesion of a part of the frame glue and the alignment film,
Another part is Nian Jie with the underlay substrate.
The underlay substrate includes viewing area and the rim area for surrounding the viewing area；The alignment film be located at viewing area and
In rim area, the frame glue is located in the rim area.
In the step S1, by being coated with one layer of alignment liquid on underlay substrate, which is formed by curing alignment film；
The edge of the alignment film has a membrane thickness unevenness region；The membrane thickness unevenness region is located at viewing area and frame glue
Between.
The alignment film includes shape in the first part of rectangle and the multiple second parts connecting with first part.
The quantity of the second part is that 4 and each second part include a horizontal part and vertical with the horizontal part connect
The vertical portion connect；4 second parts are located at four angles of the first part in rectangle, and the level of each second part
Portion and vertical portion is parallel with two sides at each angle respectively connects；
The quantity of the multiple white space is 4, and each white space is located at the vertical portion of two neighboring second part
Between.
The present invention also provides a kind of liquid crystal display panels, comprising: the upper substrate that is oppositely arranged and lower substrate are set to the upper substrate
And the alignment film on lower substrate, the frame glue between the upper substrate and lower substrate and liquid crystal layer；
A part of edge of the alignment film is recessed to the direction far from frame glue to form multiple white spaces；The frame glue
A part and the alignment film marginal adhesion, another part is Nian Jie with the upper substrate and lower substrate respectively.
The upper substrate and lower substrate include viewing area and the rim area for surrounding the viewing area；The alignment film is located at
In viewing area and rim area, the frame glue is located in the rim area.
The edge of the alignment film has a membrane thickness unevenness region；The membrane thickness unevenness region is located at viewing area and frame glue
Between.
The alignment film includes shape in the first part of rectangle and the multiple second parts connecting with first part.
The quantity of the second part is that 4 and each second part include a horizontal part and vertical with the horizontal part connect
The vertical portion connect；4 second parts are located at four angles of the first part in rectangle, and the level of each second part
Portion and vertical portion is parallel with two sides at each angle respectively connects；
The quantity of the multiple white space is 4, and each white space is located at the vertical portion of two neighboring second part
Between.
Beneficial effects of the present invention: alignment film coating method of the invention, should by forming alignment film on underlay substrate
A part of edge of alignment film is recessed to the direction far from underlay substrate edge to form multiple white spaces, subsequent in substrate base
Frame glue is formed on plate, a part of frame glue can be made Nian Jie with alignment film, and another part passes through multiple white spaces of alignment film
It is Nian Jie with underlay substrate, prevent frame glue whole all Nian Jie with alignment film, reducing alignment film influences the adhesion strength of frame glue.This hair
Bright liquid crystal display panel can make a part of frame glue Nian Jie with alignment film, another part by multiple white spaces of alignment film with
Upper substrate and lower substrate bonding prevent frame glue whole all Nian Jie with alignment film, and reducing alignment film influences the adhesion strength of frame glue.
Detailed description of the invention
For further understanding of the features and technical contents of the present invention, it please refers to below in connection with of the invention detailed
Illustrate and attached drawing, however, the drawings only provide reference and explanation, is not intended to limit the present invention.
In attached drawing,
Fig. 1 and Fig. 2 is the schematic diagram of existing alignment film coating method；
Fig. 3 is the schematic diagram of existing another alignment film coating method；
Fig. 4 is the flow chart of alignment film coating method of the invention；
Fig. 5 is the schematic diagram of alignment film coating method step S1 of the invention；
Fig. 6 is the schematic diagram of alignment film coating method step S2 of the invention；
Fig. 7 is the sectional view at the A-A of Fig. 6；
Fig. 8 is the structural schematic diagram of liquid crystal display panel of the invention；
Fig. 9 is the top view of the lower substrate of liquid crystal display panel of the invention.
Specific embodiment
Further to illustrate technological means and its effect adopted by the present invention, below in conjunction with preferred implementation of the invention
Example and its attached drawing are described in detail.
Referring to Fig. 4, the present invention provides a kind of alignment film coating method, include the following steps:
Step S1, referring to Fig. 5, providing underlay substrate 10, alignment film 20 is formed on the underlay substrate 10；The orientation
A part of edge of film 20 is recessed to the direction far from 10 edge of underlay substrate to form multiple white spaces 21；
Step S2, referring to Fig. 6, on the underlay substrate 10 formed frame glue 30, a part of the frame glue 30 with it is described
The marginal adhesion of alignment film 20, another part are Nian Jie with the underlay substrate 10.
It should be noted that the present invention on underlay substrate 10 by forming alignment film 20, a part of the alignment film 20
Edge is recessed to the direction far from 10 edge of underlay substrate to form multiple white spaces 21, subsequent to be formed on underlay substrate 10
Frame glue 30 can make a part of frame glue 30 Nian Jie with alignment film 20, and another part passes through multiple white spaces of alignment film 20
21 is Nian Jie with underlay substrate 10, prevents frame glue 30 whole all Nian Jie with alignment film 20, reduces alignment film 20 to the viscous of frame glue 30
Put forth effort to influence.
Specifically, the underlay substrate 10 includes viewing area 11 and the rim area 12 for surrounding the viewing area 11；It is described to match
It is located in viewing area 11 and rim area 12 to film 20, the frame glue 30 is located in the rim area 12.
Specifically, referring to Fig. 7, by being coated with one layer of alignment liquid on underlay substrate 10, this is matched in the step S1
Alignment film 20 is formed by curing to liquid.Since alignment liquid can spread the edge so as to cause alignment liquid around under the influence of gravity
Film thickness homogeneity it is poor, and then cause alignment film 20 edge have a membrane thickness unevenness region 22.Further, due to matching
It is located in viewing area 11 and rim area 12 to film 20, and the marginal adhesion of a part of frame glue 30 and the alignment film 20, then
The area of alignment film 20 is much larger than the area of viewing area 11, and the membrane thickness unevenness region 22 can be made to be located at viewing area 11 and frame glue
Between 30, so that the membrane thickness unevenness region 22 of alignment film 20 be avoided to be located in viewing area 11, membrane thickness unevenness region 22 is prevented
The orientation of subsequent liquid crystal is caused bad, and then the edge of liquid crystal display panel leads to the problem of the bad of Mura, improves liquid crystal display panel
Quality.
Specifically, the alignment film 20 includes shape in the first part 201 of rectangle and connect with first part 201
Multiple second parts 202.
Further, the quantity of the second part 202 is 4 and each second part 202 includes a horizontal part 2021
And with the horizontal part 20121 vertical portion 2022 connected vertically；The shape of the i.e. described second part 202 is L shape.This 4
Second part 202 is located at four angles of the first part 201 in rectangle, and the horizontal part 2021 of each second part 202
With vertical portion 2022 is parallel with two sides at each angle respectively connects.So, the quantity of the multiple white space 21 is also 4
A, each white space 21 is located between the vertical portion 2022 of two neighboring second part 202.
Specifically, the shape of the frame glue 30 is rectangle.
Specifically, the material of the alignment film 20 is polyimides (Polyimide).
Specifically, being equipped with TFT, insulating layer and pixel electrode (not shown) etc. between the underlay substrate 10 and alignment film 20
Structure, alternatively, being equipped with the structures such as color blocking layer and black matrix (not shown) between the underlay substrate 10 and alignment film 20.
Fig. 8 and Fig. 9 is please referred to, is based on above-mentioned alignment film coating method, the present invention also provides a kind of liquid crystal display panels, comprising:
The upper substrate 100 being oppositely arranged and lower substrate 200, are set to the alignment film 20 on the upper substrate 100 and lower substrate 200
Frame glue 30 and liquid crystal layer 40 between the upper substrate 100 and lower substrate 200；
A part of edge of the alignment film 20 is recessed to the direction far from frame glue 30 to form multiple white spaces 21；Institute
State a part of frame glue 30 and the marginal adhesion of the alignment film 20, another part respectively with the upper substrate 100 and lower substrate
200 bondings.
It should be noted that a part of edge of alignment film 20 of the invention is recessed to the direction far from frame glue 30 to be formed
Multiple white spaces 21 can make a part of frame glue 30 Nian Jie with alignment film 20, and another part is multiple by alignment film 20
White space 21 is Nian Jie with upper substrate 100 and lower substrate 200, prevents frame glue 30 whole all Nian Jie with alignment film 20, reduction is matched
The adhesion strength of frame glue 30 is influenced to film 20.
Specifically, the upper substrate 100 and lower substrate 200 include viewing area 11 and the frame for surrounding the viewing area 11
Area 12；The alignment film 20 is located in viewing area 11 and rim area 12, and the frame glue 30 is located in the rim area 12.
Specifically, the production method of the alignment film 20 are as follows: by being coated with one layer on upper substrate 100 and lower substrate 200
The alignment liquid is formed by curing alignment film 20 by alignment liquid.Since alignment liquid can spread to lead around under the influence of gravity
It causes the film thickness homogeneity at the edge of alignment liquid poor, and then causes the edge of alignment film 20 that there is a membrane thickness unevenness region 22.
Further, since alignment film 20 is located in viewing area 11 and rim area 12, and a part of frame glue 30 and the alignment film 20
Marginal adhesion, then the area of alignment film 20 be much larger than viewing area 11 area, 22, the membrane thickness unevenness region can be made
Between viewing area 11 and frame glue 30, so that the membrane thickness unevenness region 22 of alignment film 20 be avoided to be located in viewing area 11, prevent
Membrane thickness unevenness region 22 orientation of subsequent liquid crystal is caused it is bad, and then liquid crystal display panel edge generate the bad of Mura ask
Topic, improves the quality of liquid crystal display panel.
Further, the liquid crystal layer 40 is located in viewing area 11, i.e., liquid crystal layer 40 is not located at the film thickness of alignment film 20 not
22 top of homogeneous area.
Specifically, the alignment film 20 includes shape in the first part 201 of rectangle and connect with first part 201
Multiple second parts 202.
Further, the quantity of the second part 202 is 4 and each second part 202 includes a horizontal part 2021
And with the horizontal part 20121 vertical portion 2022 connected vertically；The shape of the i.e. described second part 202 is L shape.This 4
Second part 202 is located at four angles of the first part 201 in rectangle, and the horizontal part 2021 of each second part 202
With vertical portion 2022 is parallel with two sides at each angle respectively connects.So, the quantity of the multiple white space 21 is also 4
A, each white space 21 is located between the vertical portion 2022 of two neighboring second part 202.
Specifically, the shape of the frame glue 30 is rectangle.
Specifically, the material of the alignment film 20 is polyimides (Polyimide).
Specifically, the upper substrate 100 is TFT substrate, the lower substrate 200 is CF substrate, alternatively, the upper substrate
100 be CF substrate, and the lower substrate 200 is TFT substrate.
In conclusion alignment film coating method of the invention is on underlay substrate by forming alignment film, the alignment film
A part of edge is recessed to the direction far from underlay substrate edge to form multiple white spaces, subsequent to be formed on underlay substrate
Frame glue can make a part of frame glue Nian Jie with alignment film, the multiple white spaces and substrate base that another part passes through alignment film
Plate bonding prevents frame glue whole all Nian Jie with alignment film, and reducing alignment film influences the adhesion strength of frame glue.Liquid crystal of the invention
Panel can make a part of frame glue Nian Jie with alignment film, another part by multiple white spaces of alignment film and upper substrate and
Lower substrate bonding prevents frame glue whole all Nian Jie with alignment film, and reducing alignment film influences the adhesion strength of frame glue.
The above for those of ordinary skill in the art can according to the technique and scheme of the present invention and technology
Other various corresponding changes and modifications are made in design, and all these change and modification all should belong to the claims in the present invention
Protection scope.
Claims (10)
1. a kind of alignment film coating method, which comprises the steps of:
Step S1, underlay substrate (10) are provided, forms alignment film (20) on the underlay substrate (10)；The alignment film (20)
A part of edge is recessed to the direction far from underlay substrate (10) edge to form multiple white spaces (21)；
Step S2, it is formed on the underlay substrate (10) frame glue (30), a part of the frame glue (30) and the alignment film
(20) marginal adhesion, another part are Nian Jie with the underlay substrate (10).
2. alignment film coating method as described in claim 1, which is characterized in that the underlay substrate (10) includes viewing area
(11) and the rim area (12) of the viewing area (11) is surrounded；The alignment film (20) is located at viewing area (11) and rim area (12)
In, the frame glue (30) is located in the rim area (12).
3. alignment film coating method as claimed in claim 2, which is characterized in that in the step S1, by underlay substrate
(10) it is coated with one layer of alignment liquid on, which is formed by curing alignment film (20)；
The edge of the alignment film (20) has a membrane thickness unevenness region (22)；The membrane thickness unevenness region (22) is located at display
Between area (11) and frame glue (30).
4. alignment film coating method as described in claim 1, which is characterized in that the alignment film (20) includes shape in rectangle
First part (201) and multiple second parts (202) for being connect with first part (201).
5. alignment film coating method as claimed in claim 4, which is characterized in that the quantity of the second part (202) is 4
And each second part (202) include a horizontal part (2021) and with the horizontal part (201) (21) vertical portion connected vertically
(2022)；4 second parts (202) are located at four angles of the first part (201) in rectangle, and each second part
(202) horizontal part (2021) and vertical portion (2022) is parallel with two sides at each angle respectively to be connected；
The quantity of the multiple white space (21) is 4, and each white space (21) is located at two neighboring second part (202)
Vertical portion (2022) between.
6. a kind of liquid crystal display panel characterized by comprising the upper substrate (100) that is oppositely arranged and lower substrate (200) are set to institute
It states the alignment film (20) on upper substrate (100) and lower substrate (200), be set between the upper substrate (100) and lower substrate (200)
Frame glue (30) and liquid crystal layer (40)；
A part of edge of the alignment film (20) is recessed to the direction far from frame glue (30) to form multiple white spaces (21)；
The marginal adhesion of a part of the frame glue (30) and the alignment film (20), another part respectively with the upper substrate (100)
And lower substrate (200) bonding.
7. liquid crystal display panel as claimed in claim 6, which is characterized in that the upper substrate (100) and lower substrate (200) include
Viewing area (11) and the rim area (12) for surrounding the viewing area (11)；The alignment film (20) is located at viewing area (11) and frame
In area (12), the frame glue (30) is located in the rim area (12).
8. liquid crystal display panel as claimed in claim 7, which is characterized in that the edge of the alignment film (20) has a film thickness uneven
Even region (22)；The membrane thickness unevenness region (22) is located between viewing area (11) and frame glue (30).
9. liquid crystal display panel as claimed in claim 6, which is characterized in that the alignment film (20) includes that shape is in the first of rectangle
Partially (201) and the multiple second parts (202) being connect with first part (201).
10. liquid crystal display panel as claimed in claim 9, which is characterized in that the quantity of the second part (202) is for 4 and every
A second part (202) include a horizontal part (2021) and with the horizontal part (201) (21) vertical portion connected vertically
(2022)；4 second parts (202) are located at four angles of the first part (201) in rectangle, and each second part
(202) horizontal part (2021) and vertical portion (2022) is parallel with two sides at each angle respectively to be connected；
The quantity of the multiple white space (21) is 4, and each white space (21) is located at two neighboring second part (202)
Vertical portion (2022) between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201811386975.7A CN109407411A (en) | 2018-11-20 | 2018-11-20 | Alignment film coating method and liquid crystal display panel |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811386975.7A CN109407411A (en) | 2018-11-20 | 2018-11-20 | Alignment film coating method and liquid crystal display panel |
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Cited By (1)
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| CN114563889A (en) * | 2022-03-11 | 2022-05-31 | 业成科技（成都）有限公司 | Display module, preparation method thereof and electronic equipment |
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| CN114563889A (en) * | 2022-03-11 | 2022-05-31 | 业成科技（成都）有限公司 | Display module, preparation method thereof and electronic equipment |
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