Source: http://www.google.com/patents/US6383579?dq=7,752,326
Timestamp: 2014-07-31 19:53:31
Document Index: 360650913

Matched Legal Cases: ['Application No. 1999', 'art 1', 'art 1', 'application No. 08', 'application No. 08', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'application No. 09', 'art 2']

Patent US6383579 - Polyethyleniminie cinnamate alignment layer with photosensitive constituent ... - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign in<nobr>Advanced Patent Search</nobr>PatentsThe liquid crystal display device of the present invention comprises first and second substrates, a first alignment layer on the first substrate, wherein the first alignment layer includes polyethyleneimine, and a liquid crystal layer between the first and second substrates....http://www.google.com/patents/US6383579?utm_source=gb-gplus-sharePatent US6383579 - Polyethyleniminie cinnamate alignment layer with photosensitive constituent; heat resistanceAdvanced Patent SearchPublication numberUS6383579 B1Publication typeGrantApplication numberUS 09/553,406Publication dateMay 7, 2002Filing dateApr 20, 2000Priority dateApr 21, 1999Fee statusPaidAlso published asDE10019829A1, DE10019829B4, US6582784, US7018687, US20020106462, US20030180477Publication number09553406, 553406, US 6383579 B1, US 6383579B1, US-B1-6383579, US6383579 B1, US6383579B1InventorsSu Hyun Park, Young Seok ChoiOriginal AssigneeLg. Philips Lcd Co., Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (93), Non-Patent Citations (42), Referenced by (14), Classifications (16), Legal Events (5) External Links: USPTO, USPTO Assignment, EspacenetPolyethyleniminie cinnamate alignment layer with photosensitive constituent; heat resistanceUS 6383579 B1Abstract The liquid crystal display device of the present invention comprises first and second substrates, a first alignment layer on the first substrate, wherein the first alignment layer includes polyethyleneimine, and a liquid crystal layer between the first and second substrates.
first and second substrates; a first alignment layer on the first substrate, wherein the first alignment layer includes polyethyleneimine having at least a photo-sensitive constituent; and a liquid crystal layer between the first and second substrates. 2. The device according to claim 1, wherein liquid crystal molecules in the liquid crystal layer are aligned homogeneously to surface of one substrate between the first and second substrates and are aligned homeotropically to surface of the other substrate.
3. The device according to claim 1, wherein the photo-sensitive constituent includes a material selected from the group consisting of cinnamoyl derivatives.
4. The device according to claim 3, wherein the cinnamoyl derivative includes at least one member selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CH3, OCH3, CF3, OCF3, CnH2n+1−xFx (n=1�10, x=0�2n+1), OCnH2n+1−xFx (n=1�10, x=0�2n+1), C6H5−xFx (n=1�10, x=0�5), C6H4OCnH2n+1−xFx (n=1�10, x=0�2n+1).
5. The device according to claim 1, wherein the polyethyleneimine is (X1 and X2 are each selected from the group consisting of hydrogen, fluorine, chlorine, CN, NO2, CH3−xFx (x=0�3); k is 0 to 1; Y is selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1), and R2, R3, R4, R5 are selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1)).
6. The device according to claim 1, further comprising a spacer between the polyethyleneimine and photo-sensitive constituent.
7. The device according to claim 6, wherein the spacer is selected from the group consisting of (CH2)mO, (CH2)mN, (CH2)m (m=0�10).
8. The device according to claim 6, wherein the photo-sensitive constituent includes a material selected from the group consisting of cinnamoyl derivatives.
9. The device according to claim 8, wherein the cinnamoyl derivative includes at least one member selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CH3, OCH3, CF3, OCF3, CnH2n+1−xFx (n=1�10, x=0�2n+1), OCnH2n+1−xFx (n=1�10, x=0�2n+1), C6H5−xFx (n=1�10, x=0�5), C6H4OCnH2n+1−xFx (n=1�10, x=0�2n+1).
10. The device according to claim 6, wherein the polyethyleneimine is (S (spacer) is (CH2)mO, (CH2)mN, (CH2)m (m=0�10), R1 is (X1 and X2 are each selected from the group consisting of hydrogen, fluorine, chlorine, CN, NO2, CH3−xFx (x=0�3); k is 0 to 1; Y is selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1), and R2, R3, R4, R5 are selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1)).
further comprising a second alignment layer on the second substrate. 12. The device according to claim 11, wherein the second alignment layer includes a material selected from the group consisting of a pyranose polymer, a furanose polymer, polyvinyl cinnamate, polysiloxane cinnamate, polyvinyl alcohol, polyamide, polyimide, polyamic acid and silicone dioxide.
13. The device according to claim 11, wherein the first or second alignment layer is divided into at least two domains for driving liquid crystal molecules in the liquid crystal layer differently on each domain.
14. The device according to claim 11, wherein the first or second alignment layer is divided into at least two portions for aligning liquid crystal molecules in the liquid crystal layer differently in each portion.
15. The device according to claim 1, wherein the liquid crystal layer includes liquid crystal molecules having positive dielectric anisotropy.
16. The device according to claim 1, wherein the liquid crystal layer includes liquid crystal molecules having negative dielectric anisotropy.
17. The device according to claim 1, wherein liquid crystal molecules in the liquid crystal layer are aligned homogeneously to surfaces of the first and second substrates.
18. The device according to claim 1, wherein liquid crystal molecules in the liquid crystal layer are aligned homeotropically to surfaces of the first and second substrates.
19. The device according to claim 1, wherein liquid crystal molecules in the liquid crystal layer are aligned tiltedly to surfaces of the first and second substrates.
20. The device according to claim 1, wherein liquid crystal molecules in the liquid crystal layer are aligned twistedly to surfaces of the first and second substrates.
This application claims the benefit of Korean Patent Application No. 1999-14122 filed on Apr. 21, 1999, which is hereby incorporated by reference for all purposes as if fully set forth herein.
The polyethyleneimine is (X1 and X2 are each selected from the group consisting of hydrogen, fluorine, chlorine, CN, NO2, CH3−xFx (x=0�3); k is 0 to 1; Y is selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1), and R2, R3, R4, R5 are selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1)).
In addition, the polyethyleneimine is (S (spacer) is (CH2)mO, (CH2)mN, (CH2)m (m=0�10), R1 is (X1 and X2 are each selected from the group consisting of hydrogen, fluorine, chlorine, CN, NO2, CH3−xFx(x=0�3); k is 0 to 1; Y is selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1) , and R2, R3, R4, R5 are selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1)).
EXAMPLE 2 Synthesis of polyethyleneimine cinnamate A mixture of 0.05 mol cinnamoyl chloride (prepared from a cinnamic acid produced in Example 1, an excess of thionyl chloride, and catalytic quantities of dimethyl formamide), 0.04 mol polyethyleneimine, and 0.06 mol pyridine in 40 ml chloroform is heated for 24 hours at 20� C., cooled, and diluted with methanol. The reaction product is filtered, washed with methanol and water, dried in a vacuum, and subsequently milled by a vibrating mill. The yield of cellulose cinnamate is approximately 60% to 90%. Thin layer chromatography (TLC) reveals there is no cinnamic acid in the reaction products.
In addition, cinnamoyl derivatives includes hydrogen, fluorine, chlorine, CN, NO2, CH3, OCH3, CF3, OCF3, CnH2n+1−xFx (n =1�10, x=0�2n+1), OCnH2n+1−xFx (n=1�10, x=0�2n+1) C6H5−xFx (n=1�10, x=0�5), C6H4OCnH2n+1−xFx (n=1�10, x=0�2n+1).
Besides, it is possible that the polyethyleneimine is (R1 is (X1 and X2 are each selected from the group consisting of hydrogen, fluorine, chlorine, CN, NO2, CH3−xFx (x=0�3); k is 0 to 1; Y is selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx CnH2n+1−xFx (n=1�10, x=0�2n+l) , and R2, R3, R4, R5 are selected from the group consisting of hydrogen, fluorine, chlorine, cyano, NO2, CF3, OCF3, CnH2n+1−xFx, OCnH2n+1−xFx (n=1�10, x=0�2n+1)
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Philips Lcd Co., Ltd.Liquid crystal display deviceUS7372480Dec 7, 2004May 13, 2008Kent State UniversityNon-lithographic photo-induced patterning of polymers from liquid crystal solvents with spatially modulated director fieldsUS8176354Mar 25, 2010May 8, 2012International Business Machines CorporationWave pipeline with selectively opaque register stagesUS8202748 *Nov 15, 2010Jun 19, 2012Sharp Kabushiki KaishaLiquid crystal display apparatus and manufacturing method thereforUS8310636 *Feb 26, 2008Nov 13, 2012Sharp Kabushiki KaishaLiquid crystal display device and polymer for aligning film materialUS8395734 *Jun 13, 2006Mar 12, 2013Lg Display Co., Ltd.Liquid crystal display device with alignment layer formed of a mixture of a rubbing alignment material and a UV alignment materialUS8409674 *Jul 26, 2004Apr 2, 2013Merck Patent Gmbhpolyimide film; triacetate cellulose or diacetate cellulose film; photochromic, isomerisable compounds, chromophores, dyes;derivatives of azobenzene, stilbenes, spiropyran, spirooxadines, alpha -hydrazono- beta -ketoesters, cinnamate, retinylidene, chalcone, coumarins, benzylidenephthalimidinesUS8481130Sep 13, 2012Jul 9, 2013Merck Patent GmbhAlignment layer with reactive mesogens for aligning liquid crystal moleculesUS8576362Oct 9, 2012Nov 5, 2013Sharp Kabushiki KaishaLiquid crystal display device and polymer for alignment film materialsUS8654289Feb 7, 2013Feb 18, 2014Lg Display Co., Ltd.Method of fabricating liquid crystal display device using a mixture of rubbing alignment material and UV alignment materialCN102093560BFeb 26, 2008May 29, 2013夏普株式会社Liquid crystal display device and polymer for aligning film material* Cited by examinerClassifications U.S. Classification428/1.26, 349/132, 428/1.2, 349/129, 349/128, 349/130, 349/135, 252/299.4, 428/1.25International ClassificationG02F1/139, C08G73/04, G02F1/137, G02F1/1337Cooperative ClassificationG02F1/133711, G02F1/133788European ClassificationG02F1/1337CLegal EventsDateCodeEventDescriptionOct 25, 2013FPAYFee paymentYear of fee payment: 12Oct 7, 2009FPAYFee paymentYear of fee payment: 8Oct 17, 2008ASAssignmentOwner name: LG DISPLAY CO., LTD., KOREA, REPUBLIC OFFree format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:021754/0230Effective date: 20080304Owner name: LG DISPLAY CO., LTD.,KOREA, REPUBLIC OFFree format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100203;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100209;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100211;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100223;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100225;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100302;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100309;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100316;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100323;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100330;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100406;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100413;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100420;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100427;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100504;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100511;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100518;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;US-ASSIGNMENT DATABASE UPDATED:20100525;REEL/FRAME:21754/230Free format text: CHANGE OF NAME;ASSIGNOR:LG.PHILIPS LCD CO., LTD.;REEL/FRAME:21754/230Oct 14, 2005FPAYFee paymentYear of fee payment: 4Aug 23, 2000ASAssignmentOwner name: LG. 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