CN103576389A - Alignment layer set, manufacturing method thereof, substrate and display device - Google Patents

Alignment layer set, manufacturing method thereof, substrate and display device Download PDF

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CN103576389A
CN103576389A CN201310577083.6A CN201310577083A CN103576389A CN 103576389 A CN103576389 A CN 103576389A CN 201310577083 A CN201310577083 A CN 201310577083A CN 103576389 A CN103576389 A CN 103576389A
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alignment layers
matching layer
alignment
friction
friction matching
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CN103576389B (en
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周晓东
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BOE Technology Group Co Ltd
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Abstract

The invention relates to the technical field of liquid crystal display, in particular to an alignment layer set, a manufacturing method thereof, a substrate and a display device. The alignment layer set comprises friction alignment layers and smooth alignment layers, wherein the friction alignment layers and the smooth alignment layers are arranged on the upper surface of the substrate in the direction far away from the upper surface of the substrate, and the orientation of the friction alignment layers is identical with that of the smooth alignment layers. According to the alignment layer set, the manufacturing method thereof, the substrate and the display device, a structure of combining the smooth alignment layers and the friction alignment layers is adopted, and the purposes of improving the contrast ratio of liquid crystal panels and simultaneously restraining the generation of residual images to improve the display quality of the liquid crystal panels are achieved by covering detects generated in the friction alignment layers through the smooth alignment layers and by using the anchoring energy of the friction alignment layers for compensating the defect that the smooth alignment layers are poor in anchoring engine.

Description

Both alignment layers group and manufacture method thereof, substrate and display device
Technical field
The present invention relates to display technique field, particularly a kind of both alignment layers group and manufacture method, substrate and display device.
Background technology
Liquid crystal display has been widely used in various electronic products, and liquid crystal panel main composition element comprises two substrates that are oppositely arranged, and one is clipped in the liquid crystal layer between these two substrates; Both sides at liquid crystal layer are provided with both alignment layers, and both alignment layers is separately positioned on the inside surface that described two substrates are relative.The effect of alignment film is to make liquid crystal molecule produce orientation, realizes Presentation Function.
In existing orientation technology, most widely used is friction orientation technology.Friction orientation technology can produce good orientation effect, but has too unavoidable defect.With ADS pattern (ADvanced Super Dimension Switch, a senior super dimension switch technology) liquid crystal panel is example, substrate surface has a lot of microstructures, the edge of these structures can not be rubbed and arrive by the fine hair on friction cloth in friction orientation technique, there is friction shadow region, cause the orientation in these regions bad; Friction orientation technique can have excessive friction in the subregion of alignment layer surface, causes Rubbing mura(abrasion mark) defect.The technological deficiency of Rubbing mura forms in friction process, in ADS mode liquid crystal panel, can cause along the wire vision of frictional direction badly, can cause the liquid crystal aligning in liquid crystal panel bad, causes light leak.In addition, these microstructures are also furnished with certain damage to friction, and its chip drops at substrate surface, becomes foreign matter, has a strong impact on display quality.
In new orientation technology, light alignment technique is the most remarkable, and it can make layer of liquid crystal molecule produce orientation uniformly.In technological process, light source not with display device substrate contacts, can be good at avoiding the undesirable elements such as scuffing, foreign matter, orientation shadow region, significantly improve display quality.But light alignment technique also has shortcoming, a little less than its anchoring energy, easily produce image retention.Image retention refers to that liquid crystal display is long-time and shows after a width picture, then while showing other pictures, the upper display frame profile left behind.Image retention is also a key factor that determines display device quality.
In order to overcome the above problems, the present invention has done useful improvement.
Summary of the invention
(1) technical matters that will solve
The object of this invention is to provide a kind of elimination because of the low image retention causing of anchoring energy in light alignment technique, and can improve both alignment layers group and manufacture method, substrate and the display device of display performance.
(2) technical scheme
The present invention is achieved by the following technical solutions: a kind of both alignment layers group, and described both alignment layers group comprises friction matching layer and light both alignment layers, described friction matching layer and light both alignment layers are along be successively set on the upper surface of this substrate away from the direction of upper surface of base plate; The orientation angles of described friction matching layer and described smooth both alignment layers is consistent.
Wherein, the material of described friction matching layer and described smooth both alignment layers has identical polarity.
Further, the material of described friction matching layer is a kind of in polyimide, polystyrene and three kinds of materials of polyacrylate.
Further again, the material of described smooth both alignment layers is light orientated polymer.
Wherein, described smooth orientated polymer is cinnamoyl material, chalcone sill, cumarin sill or azo group material.
Further, the thickness of described smooth both alignment layers is less than the thickness of described friction matching layer.
Preferably, described smooth both alignment layers thickness range is
Figure BDA0000416434320000021
.
Preferably, the thickness range of described friction matching layer is
Figure BDA0000416434320000022
.
The present invention also provides a kind of substrate, and the upper surface of described substrate is provided with the both alignment layers group described in above-mentioned any one.
The present invention also provides a kind of display device, comprises the both alignment layers group described in as above any one.
The present invention also provides a kind of manufacture method of both alignment layers group, comprises the following steps:
At upper surface of base plate, form friction matching layer, then on described friction matching layer, form the light both alignment layers consistent with this friction matching layer orientation angles.
Wherein, the formation method of described friction matching layer specifically comprises the following steps:
Upper surface at substrate forms the first alignment film
Adopt friction orientation technique to make described the first alignment film form orientation angles;
Clean described the first both alignment layers, and be dried, obtain friction matching layer.
Further, described friction orientation technique specifically comprises the following steps:
Described substrate is contacted with friction roller;
Described friction roller rotation, and advance at described substrate surface along set angle, on described the first alignment film surface, form orientation angles.
Wherein, the formation method of described smooth both alignment layers specifically comprises the following steps:
On described friction matching layer surface, form the second alignment film;
By light orientation process, make described the second alignment film form orientation angles, obtain light both alignment layers.
Further, described smooth orientation process concrete grammar is: adopt polarized ultraviolet source to irradiate described the second alignment film, make this second alignment film form orientation angles.
Wherein, the wavelength in described polarized ultraviolet source is 200-400nm, and energy is 0.7-2J/cm2.
(3) beneficial effect
Compare with product with prior art, the present invention has the following advantages:
1. the present invention by conjunction with friction matching technology and light alignment technique, is orientated consistent setting by friction matching layer with described smooth both alignment layers, makes the use that can combine of friction matching layer and light both alignment layers; Light both alignment layers is covered on friction matching layer, by light both alignment layers, cover the scuffing that produces on friction matching film, foreign matter, orientation shadow region etc. in friction orientation technique bad, utilize the weak deficiency of strong anchoring energy compensating light both alignment layers anchoring energy of friction matching layer, realize the generation that improves contrast simultaneously and suppress image retention, reach the object that improves liquid crystal panel display quality;
2. in the manufacture method of both alignment layers group provided by the invention, adopt and irradiate the technique that polarized ultraviolet is processed light alignment film, gained light both alignment layers can reduce the impact on LCD panel display effect of liquid crystal light leak that friction matching layer causes, improves display panels contrast and display quality.
Accompanying drawing explanation
Fig. 1 is liquid crystal panel structure schematic diagram provided by the invention;
Fig. 2 is the manufacture method schematic block diagram of both alignment layers group provided by the invention;
Fig. 3 is in friction matching layer processing procedure of the present invention, the location diagram of the orientation angles of strip electrode and the first alignment film.
In accompanying drawing, the component list of each label representative is as follows:
10, array base palte; 20, color membrane substrates; 301, lower friction matching layer; 302, lower smooth both alignment layers; 311, upper friction matching layer; 312, glazing both alignment layers; 40, liquid crystal layer; 50, the first alignment film; 60, the projection of strip electrode.
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is made a detailed explanation.
The present embodiment provides a kind of both alignment layers group, and described both alignment layers group comprises friction matching layer and light both alignment layers, and described friction matching layer and light both alignment layers are along be successively set on the upper surface of this substrate away from the direction of upper surface of base plate; The orientation of described friction matching layer and described smooth both alignment layers is consistent.
As shown in Figure 1, a kind of display panels has been applied above-mentioned both alignment layers group, is respectively arranged with above-mentioned both alignment layers group on its color membrane substrates and array base palte.Particularly, described display panel comprise the array base palte 10 of color membrane substrates 20, configuration relative to color membrane substrates 20 and be arranged on color membrane substrates 20 and array base palte 10 between liquid crystal layer 40, color membrane substrates 20 inside surfaces are provided with both alignment layers group, and this both alignment layers group comprises friction matching layer 311 and glazing both alignment layers 312; Particularly, color membrane substrates 20 inside surfaces are disposed with upper friction matching layer 311 and glazing both alignment layers 312 along the direction away from color membrane substrates 20; Similarly, array base palte inside surface is provided with both alignment layers group, and this both alignment layers group comprises lower smooth both alignment layers 302 and lower friction matching layer 301; Particularly, array base palte 10 inside surfaces are disposed with lower smooth both alignment layers 302 and lower friction matching layer 301 along the direction away from this array base palte 10; Wherein, upper friction matching layer 311 is consistent with the orientation of glazing both alignment layers 312, and lower smooth both alignment layers 302 is consistent with lower friction matching layer 301 orientation.
In the present embodiment, array base palte or color membrane substrates surface all comprise above-mentioned both alignment layers group.Both alignment layers group combines the technical characterstic of friction orientation technique and light orientation process, the bad impacts on LCD panel display effect such as scuffing that both alignment layers produces because of friction orientation technology, foreign matter, shadow region, Rubbing mura can be eliminated, the problem that causes liquid crystal panel to produce image retention because anchoring energy in light alignment technique is low can also be eliminated.
Preferably, two kinds of selected oriented materials of friction matching layer and light both alignment layers have identical polarity, make to reduce and repel between friction matching layer and light both alignment layers, thereby make the two more firmly bonding.
Preferably, the material of described friction matching layer adopts a kind of in polyimide, polystyrene and three kinds of materials of polyacrylate;
Preferably, the material of light both alignment layers is light orientated polymer; Further, the light orientated polymer material of employing is a kind of in cinnamoyl material, chalcone sill, cumarin sill or azo group material.
Preferably, the thickness of light both alignment layers is less than the thickness of friction matching layer, and more preferably, the thickness range of friction matching layer is
Figure BDA0000416434320000051
the thickness range of light both alignment layers is 200-500 it should be noted that, the thickness of light both alignment layers is less than the thickness of friction matching layer, is because light both alignment layers covers on friction matching layer, if the thickness of light both alignment layers too conference hinder friction matching layer and play a role, when the thickness of light both alignment layers is for being less than
Figure BDA0000416434320000053
time, light both alignment layers can not effectively be covered the bad of friction matching layer, when the thickness of light both alignment layers is for being greater than
Figure BDA0000416434320000054
time, can greatly weaken the grappling effect of friction matching layer, therefore, preferably, light both alignment layers thickness range is
The present embodiment also provides a kind of manufacture method of both alignment layers group, comprises the following steps:
At upper surface of base plate, form friction matching layer, then on described friction matching layer surface, form the light both alignment layers consistent with described friction matching layer orientation angles.
Particularly, as shown in Figure 2, the manufacture method of both alignment layers group specifically comprises the following steps:
S1 forms the first alignment film at substrate surface.
Particularly, by spin coating or transfer printing process, at color membrane substrates or array base palte surface, apply the first alignment film, the first alignment film thickness of formation is
Figure BDA0000416434320000061
S2 makes described the first alignment film produce orientation angles by friction orientation technique.
Concrete grammar is: color membrane substrates or array base palte are contacted with friction roller, and friction roller High Rotation Speed, and advance at color membrane substrates or array base palte surface along a certain set angle, on the first alignment film surface, produce fixing orientation angles.The ADS product of single domain of take is example, and preferably, its orientation angles is 7 ° (as shown in Figure 3, the orientation angles of this first alignment film 50 becomes 7 °~11 ° angles with the length direction that strip electrode projects to the projection 60 of the strip electrode on this first alignment film).In friction process, unavoidably can produce scuffing, foreign matter, the region that exists friction orientation not arrive, and it is inhomogeneous to rub.
S3 cleans the first alignment film.
By methods such as washing, Ultrasonic Cleanings, clean color membrane substrates or array base palte, remove the foreign matter producing in friction process, and be dried, obtain friction matching layer.
S4 forms the second alignment film on described friction matching layer surface.
Concrete grammar is: by spin coating or transfer printing process, on the surface of friction matching layer, apply the second alignment film, the second alignment film thickness of formation is again
Figure BDA0000416434320000062
S5 irradiates the second alignment film by polarized ultraviolet source, makes this second alignment film form orientation angles.
Preferably, the wavelength of light source is 200-400nm, and energy is 0.7-2J/cm2, makes the second alignment film produce orientation, obtains light both alignment layers.Wherein, the orientation angles of described smooth both alignment layers and the fricative orientation angles of friction matching layer are consistent.Light both alignment layers can make up the bad impact on LCD panel display effect because of the friction matching layer described in step S2, improves liquid crystal panel contrast and display quality.
The substrate that the present embodiment provides can be color membrane substrates or array base palte, and this substrate is provided with both alignment layers group.
It should be noted that, the angular relationship between the direction of orientation of the both alignment layers group on color membrane substrates and array base palte need to be formulated according to actual needs, and for example, the liquid crystal panel for IPS and FFS pattern, is designed to parallel by the direction of orientation of the two conventionally; And for the liquid crystal panel of TN pattern, conventionally the orientation of the two is designed to orthogonal.
The present embodiment also provides a kind of display device, comprises above-mentioned any one both alignment layers group, and described display device comprises that liquid crystal panel, mobile phone, liquid crystal display, panel computer etc. have product or the parts of any Presentation Function.
The present invention is by manufacture the both alignment layers part of liquid crystal panel in conjunction with friction orientation technique and light allocating process, and light both alignment layers is covered and on friction matching layer, forms both alignment layers group liquid crystal is orientated.It is bad that the present invention covers the scuffing that produces in friction orientation technique on friction matching film, foreign matter, orientation shadow region etc. by light both alignment layers, utilize the weak deficiency of strong anchoring energy compensating light both alignment layers anchoring energy of friction matching layer, realize the contrast that simultaneously improves liquid crystal panel and the generation that suppresses image retention, reach the object that improves display device display quality.
Above embodiment is only for illustrating the present invention; and be not limitation of the present invention; the those of ordinary skill in relevant technologies field; without departing from the spirit and scope of the present invention; can also make a variety of changes and modification; therefore all technical schemes that are equal to also belong to category of the present invention, and scope of patent protection of the present invention should be defined by the claims.

Claims (16)

1. a both alignment layers group, is characterized in that, described both alignment layers group comprises friction matching layer and light both alignment layers, and described friction matching layer and light both alignment layers are along be successively set on the upper surface of described substrate away from the direction of upper surface of base plate; The orientation angles of described friction matching layer and described smooth both alignment layers is consistent.
2. both alignment layers group according to claim 1, is characterized in that, the material of described friction matching layer and described smooth both alignment layers has identical polarity.
3. both alignment layers group according to claim 1 and 2, is characterized in that, the material of described friction matching layer is a kind of in polyimide, polystyrene and three kinds of materials of polyacrylate.
4. both alignment layers group according to claim 1 and 2, is characterized in that, the material of described smooth both alignment layers is light orientated polymer.
5. both alignment layers group according to claim 4, is characterized in that, described smooth orientated polymer is cinnamoyl material, chalcone sill, cumarin sill or azo group material.
6. both alignment layers group according to claim 1 and 2, is characterized in that, the thickness of described smooth both alignment layers is less than the thickness of described friction matching layer.
7. both alignment layers group according to claim 6, is characterized in that, the thickness range of described smooth both alignment layers is
8. both alignment layers group according to claim 6, is characterized in that, the thickness range of described friction matching layer is
Figure FDA0000416434310000012
9. a substrate, is characterized in that, the upper surface of described substrate is provided with the both alignment layers group as described in claim 1-8 any one.
10. a display device, is characterized in that, comprises the both alignment layers group as described in claim 1-8 any one.
The manufacture method of 11. 1 kinds of both alignment layers groups, is characterized in that, comprises the following steps:
At upper surface of base plate, form friction matching layer, then on described friction matching layer, form the light both alignment layers consistent with described friction matching layer orientation angles.
The manufacture method of 12. both alignment layers groups according to claim 11, is characterized in that,
The formation method of described friction matching layer specifically comprises the following steps:
Upper surface at substrate forms the first alignment film
Adopt friction orientation technique to make described the first alignment film form orientation angles;
Clean described the first both alignment layers, and be dried, obtain friction matching layer.
The manufacture method of 13. both alignment layers groups according to claim 12, is characterized in that, described friction orientation technique specifically comprises the following steps:
Described substrate is contacted with friction roller;
Described friction roller rotation, and advance at described substrate surface along set angle, on described the first alignment film surface, form orientation angles.
The manufacture method of 14. both alignment layers groups according to claim 11, is characterized in that, the formation method of described smooth both alignment layers specifically comprises the following steps:
On described friction matching layer surface, form the second alignment film;
By light orientation process, make described the second alignment film form orientation angles, obtain light both alignment layers.
The manufacture method of 15. both alignment layers groups according to claim 14, is characterized in that, described smooth orientation process concrete grammar is: adopt polarized ultraviolet source to irradiate described the second alignment film, make this second alignment film form orientation angles.
The manufacture method of 16. both alignment layers groups according to claim 15, is characterized in that, the wavelength in described polarized ultraviolet source is 200-400nm, and energy is 0.7-2J/cm2.
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CN107577089A (en) * 2017-09-18 2018-01-12 惠科股份有限公司 Manufacturing process and manufacturing process device of display panel
CN108027538A (en) * 2015-09-29 2018-05-11 夏普株式会社 Liquid crystal disply device and its preparation method
CN111427197A (en) * 2020-04-30 2020-07-17 成都中电熊猫显示科技有限公司 Display panel, alignment method thereof and display device
CN115857206A (en) * 2023-03-02 2023-03-28 东莞市众搏辉显示技术有限公司 Yield control method and system for liquid crystal panel processing based on big data

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CN103513468A (en) * 2012-06-14 2014-01-15 群康科技(深圳)有限公司 Display panel and forming method thereof and display system
CN103676324A (en) * 2012-09-03 2014-03-26 群康科技(深圳)有限公司 Liquid crystal display panel and liquid crystal display device

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CN102667593A (en) * 2009-10-19 2012-09-12 株式会社Lg化学 Patterned retardation film and method for manufacturing the same
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108027538A (en) * 2015-09-29 2018-05-11 夏普株式会社 Liquid crystal disply device and its preparation method
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CN111427197A (en) * 2020-04-30 2020-07-17 成都中电熊猫显示科技有限公司 Display panel, alignment method thereof and display device
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CN115857206B (en) * 2023-03-02 2023-04-25 东莞市众搏辉显示技术有限公司 Yield control method and system for liquid crystal panel processing based on big data

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