CN107884995A - Display panel - Google Patents
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- Publication number
- CN107884995A CN107884995A CN201711399117.1A CN201711399117A CN107884995A CN 107884995 A CN107884995 A CN 107884995A CN 201711399117 A CN201711399117 A CN 201711399117A CN 107884995 A CN107884995 A CN 107884995A
- Authority
- CN
- China
- Prior art keywords
- alignment layers
- display panel
- chain
- radical
- polyimides
- 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.)
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Links
- 239000003292 glue Substances 0.000 claims abstract description 29
- 239000000758 substrate Substances 0.000 claims abstract description 22
- 239000012528 membrane Substances 0.000 claims abstract description 21
- 239000004642 Polyimide Substances 0.000 claims abstract description 20
- 229920001721 polyimide Polymers 0.000 claims abstract description 20
- 239000004973 liquid crystal related substance Substances 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000004593 Epoxy Substances 0.000 claims abstract description 10
- 238000010276 construction Methods 0.000 claims abstract description 10
- 238000007348 radical reaction Methods 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 8
- 229920005575 poly(amic acid) Polymers 0.000 claims abstract description 4
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 5
- 125000004185 ester group Chemical group 0.000 claims description 3
- 150000003949 imides Chemical class 0.000 claims description 3
- 239000012188 paraffin wax Substances 0.000 claims description 3
- -1 radical Alkane Chemical class 0.000 claims description 3
- 239000004952 Polyamide Substances 0.000 claims description 2
- 125000000325 methylidene group Chemical group [H]C([H])=* 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 claims 1
- 150000003254 radicals Chemical class 0.000 description 20
- 238000010586 diagram Methods 0.000 description 4
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 150000001413 amino acids Chemical class 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005034 decoration Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 125000001570 methylene group Chemical group [H]C([H])([*:1])[*:2] 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 238000012643 polycondensation polymerization Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/13—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour based on liquid crystals, e.g. single liquid crystal display cells
- G02F1/133—Constructional arrangements; Operation of liquid crystal cells; Circuit arrangements
- G02F1/1333—Constructional arrangements; Manufacturing methods
- G02F1/1337—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers
- G02F1/133711—Surface-induced orientation of the liquid crystal molecules, e.g. by alignment layers by organic films, e.g. polymeric films
- G02F1/133723—Polyimide, polyamide-imide
-
- 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
Landscapes
- 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 invention provides a kind of display panel, including array base palte, liquid crystal layer, color membrane substrates, both alignment layers and the frame glue for supporting array base palte and color membrane substrates；The agent structure of the both alignment layers includes the one of which of polyimides and polyamic acid, wherein, side-chain radical is included in the backbone structure of the both alignment layers, the side-chain radical includes that the double bond of radical reaction and the one of which of epoxy construction can be carried out.The invention provides a kind of display panel, by using the alignment layer material with specific side-chain structure as both alignment layers, so as to improve the bonding force between both alignment layers and frame glue, and then enhances the durability of display panel.
Description
Technical field
The present invention relates to display technology field, and in particular to a kind of display panel.
Background technology
Liquid crystal display panel typically by array base palte, color membrane substrates, be clipped in the array base palte and the color membrane substrates it
Between liquid crystal layer, backlight module, polaroid etc. form.Wherein, between array base palte, a circle is also distributed with the surrounding of liquid crystal layer
Frame glue.
As depicted in figs. 1 and 2, current display panel 1 is usually use by the (liquid crystal alignment layer 130 of liquid crystal alignment layer 130
Including lower both alignment layers 132 and upper both alignment layers 131) design that inside contracts, the bonding region of the frame glue 140 outside both alignment layers 130,
So that frame glue 140 is directly in contact with array base palte 110 and color membrane substrates 120, the material that now frame glue 140 contacts is mainly electricity
The transparency electrode of pole layer.But as narrow frame is gradually popular, narrow frame needs viewing area expanding to substrate edges, due to
The precision problem of coating, the design that both alignment layers 130 inside contract easily cause the fringe region of display panel 1 show it is bad.Solution
For：By both alignment layers 130, the whole face coating on array base palte 110 and color membrane substrates 120, can so make it that viewing area is as far as possible outer
Expand, but this causes the contact material of frame glue 140 to become liquid crystal alignment layer 130 by electrode layer, causes the bonding force of frame glue 140
Reduce；On the other hand, in flexible display panels, screen can be by repeatedly ten thousand pools, and this just to the bonding force of frame glue 140, has
Higher requirement.Therefore, at present, a kind of scheme that can improve frame glue and both alignment layers bonding force is needed badly.
The content of the invention
The invention provides a kind of panel, to solve in flexible panel, between upper and lower both alignment layers and frame glue bonding force compared with
It is weak, the problem of easily causing frame glue to be peeled off.
To achieve the above object, technical scheme provided by the invention is as follows：
According to an aspect of the present invention, the invention provides a kind of display panel, the display panel to include：Array base
Plate, liquid crystal layer, color membrane substrates, both alignment layers and the frame glue for supporting array base palte and color membrane substrates；
The both alignment layers include upper both alignment layers and lower both alignment layers, and the agent structure of the both alignment layers includes polyimides and gathered
The one of which of amic acid, wherein, side-chain radical is included in the backbone structure of the both alignment layers, the side-chain radical includes entering
The double bond of row radical reaction and the one of which of epoxy construction.
According to one preferred embodiment of the present invention, the whole face of lower both alignment layers is coated on the array base palte close to the liquid
The side of crystal layer, the upper whole face of both alignment layers are coated on the color membrane substrates close to the side of the liquid crystal layer.
According to one preferred embodiment of the present invention, the agent structure of the both alignment layers is polyimides, the polyimides master
The structural formula of chain is：
According to one preferred embodiment of the present invention, R1 and R2 the access side-chain radical of the polyimides main chain, the side chain
The species of group includes：
According to one preferred embodiment of the present invention, the A in the side-chain radical is wherein the one of ether, methylene and ester group
Kind, the n of the side-chain radical is the integer between 5~20, and repeat unit is linear paraffin or side chain in the side-chain radical
Alkane, the X are with can carry out structure, the double bond that can carry out radical reaction and the epoxy construction of reactive double bond wherein
One kind, and X quantity is 1~4 on same side chain.
According to one preferred embodiment of the present invention, the structure of the X is One of which.
According to one preferred embodiment of the present invention, the frequency that the X occurs in repeat unit is 5%~50%.
According to a further aspect of the present invention, the invention provides a kind of display panel, the display panel to include：Array base
Plate, liquid crystal layer, color membrane substrates, both alignment layers and the frame glue for supporting array base palte and color membrane substrates；
The both alignment layers include upper both alignment layers and lower both alignment layers, and the both alignment layers include the first orientation region and the second orientation
Region, the corresponding both alignment layers region is the first orientation region within the frame glue, first described in the both alignment layers
Region beyond orientation region is the second orientation region；
Alignment materials include acid imide and polyamides used by the first orientation region and the second orientation region
The one of which of amino acid, wherein, side-chain radical is included in the second orientation region backbone structure, the side-chain radical includes can
Carry out the double bond of radical reaction and the one of which of epoxy construction.
According to one preferred embodiment of the present invention, material of main part is polyimides used by the second orientation region, institute
The structural formula for stating polyimides main chain is：
According to one preferred embodiment of the present invention, R1 and R2 the access side-chain radical of the polyimides main chain, the side chain
The species of group includes：
It is an advantage of the current invention that a kind of display panel is provided, by using the both alignment layers with specific side-chain structure
Material so as to improve the bonding force between both alignment layers and frame glue, and then enhances the durability of display panel as both alignment layers.
Brief description of the drawings
, below will be to embodiment or prior art in order to illustrate more clearly of embodiment or technical scheme of the prior art
The required accompanying drawing used is briefly described in description, it should be apparent that, drawings in the following description are only some invented
Embodiment, for those of ordinary skill in the art, on the premise of not paying creative work, can also be attached according to these
Figure obtains other accompanying drawings.
Fig. 1 is the structural representation of display panel in the prior art；
Fig. 2 is array base palte and the top view of lower both alignment layers in the prior art；
Fig. 3 is the structural representation of an embodiment display panel in the present invention；
Fig. 4 is the planar structure schematic diagram of both alignment layers under an embodiment in the present invention；
Fig. 5 is the structural representation of another embodiment display panel in the present invention；
Fig. 6 is the planar structure schematic diagram of both alignment layers under another embodiment in the present invention.
Embodiment
The explanation of following embodiment is with reference to additional diagram, to illustrate the particular implementation that the present invention can be used to implementation
Example.The direction term that the present invention is previously mentioned, such as [on], [under], [preceding], [rear], [left side], [right side], [interior], [outer], [side]
Deng being only the direction with reference to annexed drawings.Therefore, the direction term used is to illustrate and understand the present invention, and is not used to
The limitation present invention.In figure, the similar unit of structure is represented to identical label.
The present invention is directed in existing display panel, because cohesive force is weaker between upper and lower both alignment layers and frame glue, causes frame glue to be shelled
The problem of falling, and a kind of display panel is proposed, the present embodiment can improve the defect.
The present invention is described further with specific embodiment below in conjunction with the accompanying drawings：
Fig. 3 is the structural representation of an embodiment display panel in the present invention because in display panel, upper both alignment layers with
Lower orientation Rotating fields are similar, are specifically described here by taking the lower both alignment layers of display panel as an example, and Fig. 4 is implemented in the present invention one
The planar structure schematic diagram of the lower both alignment layers of example；
According to an aspect of the present invention, it is proposed that embodiment 1；
Embodiment 1 provides a kind of display panel 2：
The display panel 2 includes：Array base palte 210, liquid crystal layer 250, color membrane substrates 220, both alignment layers 230 and for propping up
The frame glue 240 of array base palte 210 and color membrane substrates 220 is supportted, the both alignment layers 230 include upper both alignment layers 231 and lower both alignment layers
232；
Wherein, the 232 whole face of lower both alignment layers is coated on the surface of array base palte 210 close to that side of liquid crystal layer 250, described
Upper 231 whole face of both alignment layers is coated on color membrane substrates 220 close to that side of liquid crystal layer 250, can so increase display panel 2
The coating accuracy of both alignment layers 230 (including upper both alignment layers 231 and lower both alignment layers 232), and then realize that the narrow frame of display panel is set
Meter.
The agent structure of the both alignment layers 230 includes the one of which of polyimides and polyamic acid, it is notable that
Side-chain radical is included in the backbone structure of the both alignment layers 230, the side-chain radical includes that the double bond of radical reaction can be carried out
With the one of which of epoxy construction, prove by experiment repeatedly, due to the presence of the side-chain radical of both alignment layers 230, can be lifted
The cohesive force with frame glue 240 of the both alignment layers 230, prevent the peeling of the frame glue in display panel narrow frame structure from sending out
It is raw.
It is specifically described below using the agent structure of both alignment layers 230 as polyimides.
The structural formula of the polyimides main chain is：
The backbone structure of polyimides includes side-chain radical, and side-chain radical R1 and R2 positions in the structural formula are accessed,
The side-chain radical include with acrylate structural, other can carry out the double bond and 3 kinds of epoxy construction knot of radical reaction
Any one structure in structure.
Specifically, the species of the side-chain radical includes：
Wherein, A can be-O- (ether) ,-CH2- (methylene) and-COO- (ester group) one of which；N be 1~30 it
Between integer, it is preferred that n be 5~20 between integer, the alkane that the repeat unit represents is linear paraffin or branched alkane
Hydrocarbon.
Further, the X in the side-chain radical be with can carry out the structure of reactive double bond, can to carry out free radical anti-
The double bond and the one of which of epoxy construction answered, also, X quantity is 1~4 on same side chain.
The density of the X can be adjusted according to the difference of selected liquid crystalline type and both alignment layers agent structure,
Common, the density that the X occurs in repeat unit can change between 0.01~1, it is preferred that the density of this group
Adjusted between 0.05~0.5.
It should be noted that groups density here refer to be not material density；Due to the main chain of polyimides
It is caused by condensation polymerization, and then constitutes the repeat unit of main chain, and the X is after polymerisation on side-chain radical, here
Density refer to the frequency that the X occurs on side chain, this usual frequency range can be by controlling the X in monomer
The ratio of appearance is realized.
As shown in Figure 5 and Figure 6, according to another aspect of the invention, it is proposed that embodiment 2；
Embodiment 2 proposes a kind of display panel 3, and the display panel 3 includes：Array base palte 310, liquid crystal layer 350, coloured silk
Ilm substrate 320, both alignment layers 330 and the frame glue 340 for supporting array base palte 310 and color membrane substrates 320, the both alignment layers 330
Including upper both alignment layers 331 and lower both alignment layers 332；
The both alignment layers include the first orientation region (including the first orientation region 3311 of upper both alignment layers 331 and lower orientation
First orientation region 3321 of layer 332) and the second orientation region (including the first orientation region 3312 of upper both alignment layers 331 is with
First orientation region 3322 of both alignment layers 332), corresponding both alignment layers region is the first orientation area within the frame glue 340
Domain (3311 and 3321), the region beyond the first orientation region (3311 and 3321) described in the both alignment layers are matched somebody with somebody for described second
To region (3312 and 3322)；
The upper both alignment layers 331 and the lower both alignment layers 332 are collectively referred to as both alignment layers 330, the first orientation region (3311 Hes
3321) and used by the second orientation region (3312 and 3322) alignment materials include its of acid imide and polyamic acid
Middle one kind, wherein, include side-chain radical, the side-chain radical bag in the second orientation region (3312 and 3322) backbone structure
The double bond of radical reaction and the one of which of epoxy construction can be carried out by including.
The technical scheme that embodiment 2 provides is most of identical with embodiment 1, and its distinguishing feature is, display panel 3
In the second orientation region (3312 and 3322) both alignment layers using the alignment layer material with side chain in display panel 2, and
The alignment layer material of the first orientation region (3311 and 3321) is traditional alignment layer material without side chain in display panel 3,
And then ensure that frame glue 350 is mutually be bonded with the orientation membrane structure with side chain, strengthen the bonding force between frame glue 350 and both alignment layers 330,
Prevent the peeling of the frame glue 350, the alignment layer material of the second orientation region (3311 and 3321) in embodiment 1 referring to matching somebody with somebody
To illustrating for layer 230, will not be repeated here.
The embodiments of the invention provide a kind of display panel, makees by using the alignment layer material with specific side-chain structure
For both alignment layers, so as to improve the bonding force between both alignment layers and frame glue, and then the durability of display panel is enhanced.
In summary, although the present invention is disclosed above with preferred embodiment, above preferred embodiment simultaneously is not used to limit
The system present invention, one of ordinary skill in the art, without departing from the spirit and scope of the present invention, it can make various changes and profit
Decorations, therefore protection scope of the present invention is defined by the scope that claim defines.
Claims (10)
1. a kind of display panel, it is characterised in that the display panel includes：Array base palte, liquid crystal layer, color membrane substrates, orientation
Layer and the frame glue for supporting array base palte and color membrane substrates；
The both alignment layers include upper both alignment layers and lower both alignment layers, and the agent structure of the both alignment layers includes polyimides and polyamide
The one of which of acid, wherein, side-chain radical is included in the backbone structure of the both alignment layers, the side-chain radical includes to carry out certainly
By the double bond of base reaction and the one of which of epoxy construction.
2. display panel according to claim 1, it is characterised in that the lower whole face of both alignment layers is coated on the array base
Close to the side of the liquid crystal layer on plate, the upper whole face of both alignment layers is coated on the color membrane substrates close to the one of the liquid crystal layer
Side.
3. display panel according to claim 2, it is characterised in that the agent structure of the both alignment layers is polyimides,
The structural formula of the polyimides main chain is：
4. display panel according to claim 3, it is characterised in that R1 and R2 the access side chain of the polyimides main chain
Group, the species of the side-chain radical include：
5. display panel according to claim 4, it is characterised in that A in the side-chain radical is ether, methylene and
The one of which of ester group, the n of the side-chain radical are the integer between 5~20, and repeat unit is straight chain in the side-chain radical
Alkane or branched paraffin, the X are with can carry out the structure of reactive double bond, can carry out the double bond and ring of radical reaction
The one of which of oxide structure, and X quantity is 1~4 on same side chain.
6. display panel according to claim 4, it is characterised in that the structure of the X is One of which.
7. display panel according to claim 4, it is characterised in that the frequency that the X occurs in repeat unit is 5%
~50%.
8. a kind of display panel, it is characterised in that the display panel includes：Array base palte, liquid crystal layer, color membrane substrates, orientation
Layer and the frame glue for supporting array base palte and color membrane substrates；
The both alignment layers include upper both alignment layers and lower both alignment layers, and the both alignment layers include the first orientation region and the second orientation area
Domain, the corresponding both alignment layers region is the first orientation region within the frame glue, and first matches somebody with somebody described in the both alignment layers
It is the second orientation region to the region beyond region；
Alignment materials include acid imide and polyamic acid used by the first orientation region and the second orientation region
One of which, wherein, include side-chain radical in the second orientation region backbone structure, the side-chain radical includes carrying out
The double bond of radical reaction and the one of which of epoxy construction.
9. display panel according to claim 8, it is characterised in that material of main part used by the second orientation region
For polyimides, the structural formula of the polyimides main chain is：
10. display panel according to claim 9, it is characterised in that R1 and R2 the access side of the polyimides main chain
Chain group, the species of the side-chain radical include：
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711399117.1A CN107884995B (en) | 2017-12-22 | 2017-12-22 | Display panel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711399117.1A CN107884995B (en) | 2017-12-22 | 2017-12-22 | Display panel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107884995A true CN107884995A (en) | 2018-04-06 |
| CN107884995B CN107884995B (en) | 2021-06-22 |
Family
ID=61772282
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711399117.1A Active CN107884995B (en) | 2017-12-22 | 2017-12-22 | Display panel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107884995B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110579908A (en) * | 2018-06-08 | 2019-12-17 | 立景光电股份有限公司 | Display panel |
| CN111176022A (en) * | 2020-03-12 | 2020-05-19 | Tcl华星光电技术有限公司 | Display panel, preparation method thereof and display device |
| CN111679472A (en) * | 2020-06-02 | 2020-09-18 | Tcl华星光电技术有限公司 | LCD mother board |
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| CN102608811A (en) * | 2012-03-22 | 2012-07-25 | 深圳市华星光电技术有限公司 | Liquid crystal display device and manufacturing method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110579908A (en) * | 2018-06-08 | 2019-12-17 | 立景光电股份有限公司 | Display panel |
| CN111176022A (en) * | 2020-03-12 | 2020-05-19 | Tcl华星光电技术有限公司 | Display panel, preparation method thereof and display device |
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| CN111679472A (en) * | 2020-06-02 | 2020-09-18 | Tcl华星光电技术有限公司 | LCD mother board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107884995B (en) | 2021-06-22 |
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