CN1945396B - Liquid crystal display panel - Google Patents
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- CN1945396B CN1945396B CN200510108029A CN200510108029A CN1945396B CN 1945396 B CN1945396 B CN 1945396B CN 200510108029 A CN200510108029 A CN 200510108029A CN 200510108029 A CN200510108029 A CN 200510108029A CN 1945396 B CN1945396 B CN 1945396B
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Abstract
This invention relates to a liquid crystal display panel, including the color filter substrate, array substrate and optical compensation film. The optical compensation film forms at least on one side of the color filter substrate or array substrate, which includes a polyimide compound that has the following chemical formula. The n value is an integer that is greater than 1. When A is ring aliphatic, B is aromatic or ring aliphatic, and when A is aromatic, B is ring aliphatic.
Description
Technical field
The present invention relates to a kind of display panels, particularly a kind of display panels with optical compensation films of effect of wide angle.
Background technology
Problem on there is the visual angle in conventional liquid crystal and contrasts.When the appreciator views and admires display picture; Can see the display frame of different brightness along with the difference of viewing and admiring angle; For example view and admire picture and can see image limpid in sight by the dead ahead of display; See dark not clear picture but view and admire same picture, cause appreciator's discomfort by the both sides of display; Along with the increase of LCD size, this situation is serious especially.Therefore, the requirement that reaches wide viewing angle is one of necessary problem of maximizing of LCD.And reach at present in the technology of effect of wide angle; Paste optical compensation films and improve the visual angle problem and be easy method to increase again; Because of its need increase the subsides optical compensation films outside the non-wide-angle liquid crystal display of tradition, can reach the requirement of wide viewing angle, and need not to change the operation of traditional monitor; For other wide viewing angle technology; It is comparatively cheap to utilize optical compensation films to improve the manufacturing cost of visual angle problem; But must effectively control the thickness and the birefringence rate variance of optical compensation films, and must make it have splendid transmittance, to produce the good optical compensation effect.
Selecting for use of compensate film must cooperate different LCDs to use different types of optical compensation films.Distinguish the kind of optical compensation films with optical property, can be divided into uniaxial (uniaxial) compensate film and two optical axis (biaxial) compensate films.Wherein, the uniaxial compensate film can be divided into A-plate type and C-plate type.The refractive index of A-plate type compensate film is n
y=n
z≠ n
x(n wherein
xRepresent the refractive index of x axle, all the other by that analogy), the x axle is that its optical axis is parallel with this compensate film; The refractive index of C-plate type compensate film is n
y=n
x≠ n
z, the z axle is that its optical axis is vertical with this compensate film.Another kind of compensate film is a double-optical axis compensation film, and this compensate film is all inequality in the refractive index of x, y and z direction.Increase angle of visibility and can add negative (negative) C-plate type molecule (n by A-plate type molecule
y=n
x＞n
z) or double-optical axis compensation film reach.A-plate type compensate film macromolecule capable of using gets through unidirectional mechanical stretching; Negative C-plate type compensate film and double-optical axis compensation film can be through uniaxial extensions, and the extension through other direction prepares again, but Working Procedure Controlling is difficult for.
Negative C-plate type compensate film polyimide capable of using or disc-like liquid crystal molecule prepare; This is delivered by Stephen Z.D.Cheng of Akron university and Frank W.Harris; Mainly be to utilize the firm molecular structure of polyimide can obtain the characteristic of negative birefringence rate after via coating film forming; In the present paper of delivering, mainly the polyimide with full benzene ring structure is a composition material, and most of this class formation has the problem that absorbs visible light.And the disc-like liquid crystal compensation model is developed by Fuji Photo Film; Dish shape molecule is originally as minus C-plate molecule; Can compensate each other with the eurymeric C-plate liquid crystal molecule that is used for LCD and reach effect of wide angle, but its shortcoming is for the preparation difficulty and cost an arm and a leg.
The invention of comparing the similar structures material with the present invention is a U.S. Pat 5,344,916 and US 5; 480; 964, the material of the polyimide that foregoing invention is mainly synthesized with the diamine and the bisgallic acid acid anhydride of tool benzene ring structure is main, makes it have negative birefringence rate characteristic and can be used as compensate film and use.
US 5,344, and 916 technological emphasis does, utilize the diamine and the bisgallic acid anhydride monomer synthesis of polyimides of tool benzene ring structure, make it have negative birefringence rate characteristic.But this technological shortcoming does, presents yellow or orange usually by the diamine and the synthetic polyimide of bisgallic acid anhydride monomer of tool benzene ring structure, and therefore not being suitable for the clear, colorless is main view film; In addition, the part material structure is special, be difficult for obtaining, and the monomer cost price is expensive, is not suitable for a large amount of productions.
US 5,480, and 964 technological emphasis does, utilize the diamine and the bisgallic acid anhydride monomer synthesis of polyimides of tool biphenyl structural, make it have negative birefringence rate characteristic.But this technological shortcoming does, the synthetic polyimide of the diamine of biphenyl structural and bisgallic acid anhydride monomer is more obvious on color, and therefore not being suitable for the clear, colorless is main view film.In addition, the polyimide solubleness of biphenyl structural is relatively poor; And monomer structure is difficult for synthetic, causes cost higher, is not suitable for a large amount of productions.
Summary of the invention
In view of this; The present invention provides a kind of display panels; Comprise colored filter substrate, array base palte and optical compensation films; This optical compensation films is formed at colored filter substrate or one of them side of array base palte at least, and optical compensation films comprises a polyimide compound, and wherein this polyimide has chemical formula:
Wherein the n value is the integer greater than 1, and when A was annular aliphatic, B was aromatic series or annular aliphatic; When A was aromatic series, B was an annular aliphatic.
The present invention also provides a kind of display panels; Comprise colored filter substrate, array base palte and optical compensation films; This optical compensation films is formed at colored filter substrate or one of them side of array base palte at least; And optical compensation films comprises a polyimide compound, and wherein this polyimide has chemical formula:
Wherein x and y value are the integers greater than 1, and when A was annular aliphatic, B was aromatic series or annular aliphatic, and when A was aromatic series, B was an annular aliphatic; When D was annular aliphatic, E was aromatic series or annular aliphatic, and when D was aromatic series, E was an annular aliphatic.
Material used in the present invention has the compensate film characteristic, and good processability and light transmission, and dissolves in the multiple organic solvent, is easy to process film forming; Material of the present invention has than weak color, so be suitable for the purposes of view film because its annular aliphatic composition does not absorb visible light (400nm-700nm); In addition, material used in the present invention is industrialization product mostly, and the source is obtained easily, and therefore, the material cost price is lower, is suitable for a large amount of productions.
Compositing formula of the present invention can form by following several:
1. annular aliphatic diamine and aromatic series bisgallic acid acid anhydride;
2. the annular aliphatic diamine is according to different proportion and annular aliphatic bisgallic acid acid anhydride and aromatic series bisgallic acid acid anhydride formation multipolymer;
3. aromatic series diamine and annular aliphatic bisgallic acid acid anhydride;
4. annular aliphatic diamine and aromatic series diamine form multipolymer according to different proportion and annular aliphatic bisgallic acid acid anhydride.
Description of drawings
Fig. 1 a-1c is several embodiment that show the relative position of optical compensation films of the present invention in display panels.
Fig. 2 a-2b is other several embodiment that show the relative position of optical compensation films of the present invention in display panels.
Fig. 3 shows the embodiment of this case and the ultraviolet light visible light figure result of comparative example.
Embodiment
For let above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, hereinafter is special lifts preferred embodiment, and conjunction with figs., elaborates as follows.
Please with reference to Fig. 1 a, what Fig. 1 a showed is display panels 10, comprises array base palte 11, colored filter substrate 12, spacer (Spacer) 13, liquid crystal material 14 and optical compensation films 15a.Colored filter substrate 12 is formed at the opposite of array base palte 11, and spacer 13 and liquid crystal material 14 are formed between aforementioned two substrates 11 and 12, and optical compensation films 15a then is formed at the outside of array base palte 11.In the diagram of the embodiment of the invention, the optical compensation films that is formed at array base palte 11 1 sides is with the 15a mark; The optical compensation films that is formed at colored filter substrate 12 1 sides is then with the 15b mark.
In one embodiment of this invention, optical compensation films 15a is formed at the outside of array base palte 11 shown in Fig. 1 a; The outside that also can be shown in Fig. 1 b optical compensation films 15b be formed at colored filter substrate 12; Perhaps, shown in Fig. 1 c, optical compensation films 15a and 15b are formed at the outside of above-mentioned two substrates 11 and 12 respectively.
In another embodiment of the present invention, can shown in Fig. 2 a, optical compensation films 15a be formed in the array base palte 11; The inboard that also can be shown in Fig. 2 b optical compensation films 15a be formed at array base palte 11; Perhaps, optical compensation films 15a or 15b are formed at separately or respectively in the outside, inboard or the substrate of above-mentioned two substrates 11 and 12 (not illustrating among the figure), but to provide audience's wide viewing angle to watch the effect of display picture.
The composition of optical compensation films 15a of the present invention or 15b comprises polyimide.And have a chemical formula:
Wherein the n value is the integer greater than 1, is preferably haply the integer between 10 to 10000, and A and B then represent the compound of particular types respectively.For example, when A was annular aliphatic, B was aromatic series or annular aliphatic; When A was aromatic series, B was an annular aliphatic.Below will discuss respectively to above-mentioned two kinds of situations.
1. when A was annular aliphatic, B was aromatic series or annular aliphatic:
Under this situation, the annular aliphatic of A can be
The aromatic series of B can be
Wherein X and Y can be-H ,-CH
3,-CF
3,-OH ,-OR ,-Br ,-Cl or-I, wherein R representes C
1-C
18Alkyl,
Z can be-O--CH
2-,-C (CH
3)
2-,-Ar-O-Ar-,-Ar-CH
2-Ar-,-O-Ar-C (CH
3)
2-Ar-O-,-O-Ar-Ar-O-,-O-Ar-C (CF
3)
2-Ar-O-or-Ar-C (CH
3)
2-Ar-, wherein Ar representes phenyl ring,
Perhaps, when B was annular aliphatic, the annular aliphatic of B can be
2. when A was aromatic series, B was an annular aliphatic:
Under this situation, the aromatic series of A can be
Wherein X and Y can be-H ,-CH
3,-CF
3,-OH ,-OR ,-Br ,-Cl or-I, wherein R representes C
1-C
18Alkyl,
Z can be-O--CH
2-,-C (CH
3)
2-,-Ar-O-Ar-,-Ar-CH
2-Ar-,-O-Ar-C (CH
3)
2-Ar-O-,-O-Ar-Ar-O-,-O-Ar-C (CF
3)
2-Ar-O-or-Ar-C (CH
3)
2-Ar-, wherein Ar representes phenyl ring,
And the annular aliphatic of B can be
In addition, the polyimide of optical compensation films 15a of the present invention or 15b also can be the multipolymer (copolymer) with general formula (I):
... ... ... general formula (II)
In general formula (I), x and y are the integer greater than 1, are preferably the integer between 10 to 10000; It is noted that at this general formula (I) can be the random copolymers (random copolymer) that is made up of general formula (II) and general formula (III), also can be the segmented copolymer (block copolymer) that is made up of general formula (II) and general formula (III).
Wherein, for the regulation (should be annular aliphatic or aromatic regulation) of D and E,, no longer repeat in the general formula (III) in this with identical in the general formula (II) in previous said regulation for A and B.
Table 1 is to enumerate out some to meet the embodiment with polyimide of general formula (I), general formula (II) or general formula (III) according to the invention; 12 kinds of polyimide have been comprised altogether with different structure; Its chemical constitution separately is all detailed lists in the table, therefore can know the structure of its distinct symbols of identification A, B, C or D representative.
Table 1
Table 1 is according to the prepared polyimide of several embodiment of the present invention; The common trait of above-mentioned polymkeric substance; Be all to comprise in the structure annular aliphatic composition; Therefore annular aliphatic composition capable of using does not absorb the characteristic of visible light, and Kapton of the present invention is had than weak color, therefore is more suitable for the purposes in view film.It is noted that at this; The present invention is not limited to above-mentioned 12 embodiment, just lists in the table 1 and enumerates some embodiment as representative, because its preparation method similar (preparation method will detail as the back); And being substituted by general chemical method and can reaching of different substituents repeated no more in this.
Polyimide synthesize a typical polycondensation reaction (polycondensation), its synthetic method has two kinds of one-step synthesis and two-step synthesis.One-step synthesis is in the environment that is full of like nitrogen or other inert gases; Diamines (diamine) and dicarboxylic anhydride (dianhydride) monomer are reacted in phenol solvent (toluene (m-cresol), chlorophenol (Cl-phenol)), be warming up to the reflux temperature reaction and form polyimide.Two-step synthesis is divided into two stages to carry out; At first in the environment that is full of like nitrogen or other inert gases; Diamines (diamine) and dicarboxylic anhydride (dianhydride) monomer are reacted in polar solvent, and precursor (precursor) polyamic acid of formation polyimide (polyamic acid, PAA); And then carry out imidization (imidization) with high temperature method (300-400 ℃) or chemical method and react, make its dehydration closed-loop transform into polyimide.One for example shown in figure below of one-step synthesis and two-step synthesis.
One-step synthesis:
Two-step synthesis:
In above two-step synthesis, B1317 is meant: two ring [2.2.2] suffering-7-alkene-2,3,5,6-tetracarboxylic dianhydride (Bicyclo [2.2.2] oct-7-ene-2,3,5,6-tetracarboxylic Dianhydride); ODA is meant: oxydianiline (oxydianiline); And NMP is meant: N-N-methyl-2-2-pyrrolidone N-(N-methyl-2-pyrrolidone).
Below, be example with polymkeric substance 4, polymkeric substance 5, polymkeric substance 8 and polymkeric substance 11 in the above-mentioned table 1, its preparation method is detailed respectively in embodiment 1, embodiment 3, embodiment 2 and embodiment 4, and with experimentize result's contrast of comparative example.
The preparation steps of comparative example: 6FDA-PFMB:
At room temperature, the metacresol (m-cresol) of 3 2.94 grams is added in the there-necked flask and passes to nitrogen, with 0.0147 mole 2; Two (trifluoromethyl)-4 of 29-, and the 49-benzidine (2,29-bis (trifluoromethyl)-4; 49-diaminobiphenyl below uses PFMB to represent) dissolve in the metacresol (m-cresol) of 32.94 grams, treat diphenylamine dissolve fully after again with 0.015 mole 2; 2 '-two-(3,4-dicarboxyl phenyl) (2,2 '-bis-(3 for hexafluoropropane dianhydride; 4-dicarboxyphenyl) hexafluoropropane dianhydride below uses 6FDA to represent) add, after 6FDA dissolves fully; Continue to stir 1 hour, and form thick polyamic acid solution.Be heated to 220 ℃ then and kept 3 hours, in course of reaction, with de-watering apparatus the water eliminating is generated the reactant liquor that contains polyimide simultaneously.Reactant liquor splashed into make polyimide deposition in the methyl alcohol, oven dry is 12 hours in vacuum drying oven.
The preparation steps of embodiment 1:B1317-BAPPm:
At room temperature, the metacresol (m-cresol) of 32.94 grams is added in the there-necked flask and passes to nitrogen, with 0.0147 mole 4,4 '-two (amino-benzene oxygen) propane (4; 4 '-bis (aminophenoxy) propane, below use BAPPm to represent) dissolve in the metacresol (m-cresol) of 32.94 grams, treat BAPPm dissolve fully after again with two ring [2.2.2] suffering-7-alkene-2,3 of 0.015 mole; 5,6-tetracarboxylic dianhydride (Bicyclo [2.2.2] oct-7-ene-2,3; 5,6-tetracarboxylic Dianhydride below uses B1317 to represent) add; After B1317 dissolves fully, continue to stir 1 hour, and form thick polyamic acid solution.Be heated to 220 ℃ then and kept 3 hours, in course of reaction, with de-watering apparatus the water eliminating is generated the reactant liquor that contains polyimide simultaneously.Reactant liquor splashed into make polyimide deposition in the methyl alcohol, oven dry is 12 hours in vacuum drying oven.
The preparation steps of embodiment 2:B1317-BAPPm-co-B1317-IPDA:
At room temperature; The metacresol (m-cresol) of 32.94 grams is added in the there-necked flask and passes to nitrogen, the IPD (Isophorone diamine below uses IPDA to represent) of 0.0118 mole BAPPm and 0.0030 mole is dissolved in the metacresol (m-cresol) of 32.94 grams; Treat again 0.015 mole B1317 dicarboxylic anhydride to be added after diphenylamine dissolves fully; After B1317 dissolves fully, continue to stir 1 hour, and form thick polyamic acid solution.Be heated to 220 ℃ then and kept 3 hours, in course of reaction, with de-watering apparatus the water eliminating is generated the reactant liquor that contains polyimide simultaneously.Reactant liquor splashed into make polyimide deposition in the methyl alcohol, oven dry is 12 hours in vacuum drying oven.
The preparation steps of embodiment 3:B1317-m-TB-HG:
At room temperature, the metacresol (m-cresol) of 32.94 grams is added in the there-necked flask and passes to nitrogen, with 0.0147 mole 2; 2 '-dimethyl-4,4 '-benzidine (2,2 '-Dimethyl-4; 4 '-diamino biphenyl; Below use m-TB-HG to represent) dissolve in the metacresol (m-cresol) of 32.94 grams, treat again 0.015 mole B1317 dicarboxylic anhydride to be added after diphenylamine dissolves fully, after B1317 dissolves fully; Continue to stir 1 hour, and form thick polyamic acid solution.Be heated to 220 ℃ then and kept 3 hours, in course of reaction, with de-watering apparatus the water eliminating is generated the reactant liquor that contains polyimide simultaneously.Reactant liquor splashed into make polyimide deposition in the methyl alcohol, oven dry is 12 hours in vacuum drying oven.
The preparation steps of embodiment 4:B1317-BAPPm-co-B1317-m-TB-HG:
At room temperature; The metacresol (m-cresol) of 32.94 grams is added in the there-necked flask and passes to nitrogen; The m-TB-HG diphenylamine of 0.0074 mole BAPPm and 0.0074 mole is dissolved in the metacresol (m-cresol) of 32.94 grams, treat again 0.015 mole B1317 dicarboxylic anhydride to be added after diphenylamine dissolves fully, after B1317 dissolves fully; Continue to stir 1 hour, and form thick polyamic acid solution.Be heated to 220 ℃ then and kept 3 hours, in course of reaction, with de-watering apparatus the water eliminating is generated the reactant liquor that contains polyimide simultaneously.Reactant liquor splashed into make polyimide deposition in the methyl alcohol, oven dry is 12 hours in vacuum drying oven.
It more than is the preparation steps explanation of various embodiments of the present invention and comparative example.Next will carry out the comparison of the experimental result of embodiment and comparative example.
Please with reference to Fig. 3, that Fig. 3 shows is each embodiment of this case and the ultraviolet-visible light (ultraviolet-visible of comparative example; UV-VIS) spectrogram.The x axle is the wavelength of the light source of each sample of test, and the y axle is the transmittance (transmittance) that light source sees through specimen.A, B, C and D curve are represented the test result according to the polyimide of embodiments of the invention 1,2,3 and 4 manufacturings respectively; The E curve representation be test result according to the polyimide of comparative example manufacturing.And the preparation method of specimen is following: polyimide is mixed with the solution of 20 concentration expressed in percentage by weights (wt%), with the scraper mode with this solution coat in polyethylene terephthalate (polyethyleneterephthalate; PET) on the film, after the drying polyimide film is taken off (the average build of polyimide film is about 10um), afterwards this dried polyimide film is carried out UV spectrum (instrument type: measurement Perkin Elemer Lambda 900).
By finding among the figure,, be weak color so have than comparative example because have the cause of the annular aliphatic that can not absorb visible light (wavelength is between between the 400nm to 700nm) in the material of various embodiments of the present invention.Visible light with the 400nm wavelength is an example; The polyimide film of comparative example is for the transmittance only about 30% of the light of 400nm wavelength; The polyimide film of various embodiments of the present invention for the transmittance of the light of 400nm wavelength then up to about 85%; It is weak color that the polyimide film of each embodiment all has than comparative example, therefore is more suitable for the purposes in view film.
Material used in the present invention has the compensate film characteristic, and good processability and light transmission, and dissolves in the multiple organic solvent, is easy to process film forming; Material of the present invention so have than weak color, is suitable for the purposes of view film because its annular aliphatic composition does not absorb visible light (400nm-700nm), and the optical compensation films (view film) that for example can be used as display panels uses; In addition, material used in the present invention is industrialization product mostly, and the source is obtained easily, and therefore, the material cost price is lower, is suitable for a large amount of productions.
Though the present invention discloses as above with preferred embodiment; Right its is not in order to limit the present invention; Any personnel that are familiar with this technology; Do not breaking away from the spirit and scope of the present invention, can do further improvement and variation on this basis, so the scope that claims were defined that protection scope of the present invention is worked as with the application is as the criterion.
The simple declaration of symbol is following in the accompanying drawing:
10～display panels
11～array base palte
12～colored filter substrate
13～spacer
14～liquid crystal material
15a, 15b～optical compensation films.
Claims (14)
1. display panels comprises:
One colored filter substrate and array basal plate;
One optical compensation films is formed at this colored filter substrate or one of them side of this array base palte at least, and this optical compensation films comprises a polyimide, and this polyimide has chemical formula:
Here, the n value is the integer greater than 1, and when A was annular aliphatic, B was an annular aliphatic; When A was aromatic series, B was an annular aliphatic;
Wherein, when A was annular aliphatic, B was an annular aliphatic, and the annular aliphatic of A does
The annular aliphatic of B does
Wherein, when A was aromatic series, B was an annular aliphatic, and the aromatic series of A does
Here, X and Y are-H-CH
3,-CF
3,-OH ,-OR ,-Br ,-Cl or-I, here, R representes C
1-C
18Alkyl,
Z is-O--CH
2-,-C (CH
3)
2-,-Ar-O-Ar-,-Ar-CH
2-Ar-,-O-Ar-C (CH
3)
2-Ar-O-,-O-Ar-Ar-O-,-O-Ar-C (CF
3)
2-Ar-O-or-Ar-C (CH
3)
2-Ar-, here, Ar representes phenyl ring,
And the annular aliphatic of B does
2. display panels according to claim 1, wherein, the n value in this polyimide chemical formula is between 10 to 10000.
3. display panels according to claim 1 also comprises a spacer, is formed between this colored filter substrate and this array base palte.
4. display panels according to claim 1 also comprises a liquid crystal material, is formed between this colored filter substrate and this array base palte.
5. display panels according to claim 1, wherein, this polyimide has chemical formula:
6. display panels according to claim 1, wherein, this polyimide has chemical formula:
7. display panels comprises:
One colored filter substrate and array basal plate;
One optical compensation films is formed at this colored filter substrate or one of them side of this array base palte at least, and this optical compensation films comprises a polyimide, and this polyimide has chemical formula:
Here, x and y value are the integers greater than 1, and when A was annular aliphatic, B was an annular aliphatic, and the annular aliphatic of A does
The annular aliphatic of B does
Wherein, when A was aromatic series, B was an annular aliphatic, and the aromatic series of A does
Here, X and Y are-H-CH
3,-CF
3,-OH ,-OR ,-Br ,-Cl or-I, here, R representes C
1-C
18Alkyl,
Z is-O--CH
2-,-C (CH
3)
2-,-Ar-O-Ar-,-Ar-CH
2-Ar-,-O-Ar-C (CH
3)
2-Ar-O-,-O-Ar-Ar-O-,-O-Ar-C (CF
3)
2-Ar-O-or-Ar-C (CH
3)
2-Ar-, here, Ar representes phenyl ring,
And the annular aliphatic of B does
Wherein, when D was annular aliphatic, E was an annular aliphatic, and the annular aliphatic of D does
The annular aliphatic of E does
Wherein, when D was aromatic series, E was an annular aliphatic, and the aromatic series of D does
Here, X and Y are-H-CH
3,-CF
3,-OH ,-OR ,-Br ,-Cl or-I, here, R representes C
1-C
18Alkyl,
Z is-O--CH
2-,-C (CH
3)
2-,-Ar-O-Ar-,-Ar-CH
2-Ar-,-O-Ar-C (CH
3)
2-Ar-O-,-O-Ar-Ar-O-,-O-Ar-C (CF
3)
2-Ar-O-or-Ar-C (CH
3)
2-Ar-, here, Ar representes phenyl ring,
The annular aliphatic of E does
8. display panels according to claim 7, wherein, x in this polyimide chemical formula and y value are between 10 to 10000.
9. display panels according to claim 7 also comprises a spacer, is formed between this colored filter substrate and this array base palte.
10. display panels according to claim 7 also comprises a liquid crystal material, is formed between this colored filter substrate and this array base palte.
11. display panels according to claim 7, wherein, this polyimide has chemical formula:
12. display panels according to claim 7, wherein, this polyimide has chemical formula:
13. display panels according to claim 7, wherein, this polyimide is a random copolymers.
14. display panels according to claim 7, wherein, this polyimide is a segmented copolymer.
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|---|---|---|---|
| CN200510108029A CN1945396B (en) | 2005-10-09 | 2005-10-09 | Liquid crystal display panel |
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|---|---|---|---|
| CN200510108029A CN1945396B (en) | 2005-10-09 | 2005-10-09 | Liquid crystal display panel |
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| CN1945396B true CN1945396B (en) | 2012-08-29 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI370272B (en) * | 2007-11-27 | 2012-08-11 | Ind Tech Res Inst | Polarizing plates and liquid crystal displays comprising the same |
| TWI472555B (en) | 2010-12-23 | 2015-02-11 | Ind Tech Res Inst | Polyimide polymer, method for manufacturing the same and display device |
| CN106443863A (en) * | 2016-12-05 | 2017-02-22 | 佛山纬达光电材料有限公司 | Z-axis compensation wide view angle polaroid and preparation method thereof |
| TWI636566B (en) * | 2017-09-11 | 2018-09-21 | 友達光電股份有限公司 | Display panel |
| CN107807466A (en) * | 2017-11-03 | 2018-03-16 | 惠科股份有限公司 | Liquid crystal display device and method for manufacturing the same |
| CN111025713B (en) * | 2019-12-10 | 2020-12-25 | Tcl华星光电技术有限公司 | Curved surface liquid crystal display panel and display device |
| US10976612B1 (en) | 2019-12-10 | 2021-04-13 | Tcl China Star Optoelectronics Technology Co., Ltd. | Curved liquid crystal display panel and display device |
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| CN1633613A (en) * | 2002-02-19 | 2005-06-29 | 日东电工株式会社 | Inclined optical compensation film method for producing the same and liquid crystal display including the same |
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| US8409674B2 (en) * | 2003-08-08 | 2013-04-02 | Merck Patent Gmbh | Alignment layer with reactive mesogens for aligning liquid crystal molecules |
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2005
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1633613A (en) * | 2002-02-19 | 2005-06-29 | 日东电工株式会社 | Inclined optical compensation film method for producing the same and liquid crystal display including the same |
| JP2004331951A (en) * | 2003-04-18 | 2004-11-25 | Nitto Denko Corp | New polyimide |
| JP2005221783A (en) * | 2004-02-05 | 2005-08-18 | Nitto Denko Corp | Birefringent film, optical film, polarizing plate, and liquid crystal display device |
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| CN1945396A (en) | 2007-04-11 |
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