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    • 1. 发明公开
    • 액정배향막 제조용 고분자 블렌드
    • 用于制备液晶对准层的聚合物混合物
    • KR1020020030734A
    • 2002-04-25
    • KR1020017005362
    • 2001-03-28
    • 한국과학기술원
    • 박정기김희탁이종우성시준
    • C08G73/10
    • G02F1/133723C08L79/08C09D131/06G02F1/133788Y10T428/1005C08L31/00C08L2666/14
    • PURPOSE: Provided are a polymer blend of cinnamate polymer and polyimide polymer, which are photo-reactive polymers, for preparing liquid crystal alignment layer having a high pretilt angle in photo-alignment, a process for preparing liquid crystal alignment layer by employing the blend, a liquid crystal alignment layer prepared by the process, and a crystal cell prepared by employing the liquid crystal alignment layer. The liquid crystal alignment layer prepared by employing the polymer blend has an excellent alignment property and thermal stability, thereby making possible its wide application in the development of liquid crystal displays. CONSTITUTION: The polymer blend for preparing liquid crystal alignment layer, comprises 10 to 90% (w/w) of cinnamate polymer and 10 to 90% (w/w) of polyimide polymer. The process for preparing liquid crystal alignment layer, comprises the steps of: (i) mixing cinnamate polymer and polyimide polymer in a ratio of 1: 9 to 9: 1 (w/w), and dissolving the mixed polymers in an organic solvent; (ii) spin coating the dissolved polymers onto a glass plate; (iii) heating the polymers to obtain an alignment layer; and (iv) irradiating ultraviolet ray to the alignment layer to align liquid crystals in preferred direction.
    • 目的:提供作为光反应性聚合物的肉桂酸酯聚合物和聚酰亚胺聚合物的聚合物共混物,用于制备光取向具有高预倾角的液晶取向层,通过使用该共混物制备液晶取向层的方法, 通过该方法制备的液晶取向层和通过使用液晶取向层制备的晶体单元。 通过使用聚合物共混物制备的液晶取向层具有优异的取向性和热稳定性,从而可以广泛应用于液晶显示器的开发。 构成:用于制备液晶取向层的聚合物共混物包含10至90%(w / w)的肉桂酸酯聚合物和10至90%(w / w)的聚酰亚胺聚合物。 制备液晶取向层的方法包括以下步骤:(i)以1:9至9:1(w / w)的比例混合肉桂酸酯聚合物和聚酰亚胺聚合物,并将混合聚合物溶解在有机溶剂中; (ii)将溶解的聚合物旋涂到玻璃板上; (iii)加热聚合物以获得取向层; 和(iv)向取向层照射紫外线以使液晶在优选的方向取向。
    • 5. 发明公开
    • 높은 선경사각 및 열안정성을 갖는 배향특성이 우수한액정 배향막 및 그 제조방법
    • 具有高斜率角度的液晶对准层和热稳定性和良好的对准性及其制备方法
    • KR1020020001898A
    • 2002-01-09
    • KR1020000016260
    • 2000-03-29
    • 한국과학기술원
    • 박정기성시준김희탁이종우
    • C08G73/10
    • G02F1/133723C08L79/08C09D131/06G02F1/133788Y10T428/1005C08L31/00C08L2666/14
    • PURPOSE: A liquid crystal alignment layer and its preparation method are provided, to improve the heat stability and the alignment property and to increase line slope angle by using a cinnamate-based polymer and a polyimide-based polymer. CONSTITUTION: The method comprises the steps of mixing one compound, a mixture or copolymer selected from the group consisting of 10-90 wt% of poly(vinyl cinnamate) of C1-C20, poly(vinyl fluorocinnamate), and poly(vinyl alkoxyfluorocinnamate of C1-C20, and a mixture of polyimide-based polymers selected from the group consisting of 90-10 wt% of poly(pyromellitic dianhydride-4,4'-oxydiamine), poly(pyromellitic dianhydride-2,2-bis£4-(4-aminophenoxy)phenyl|-hexafluoropropane), poly(pyromellitic dianhydride-2,2-bis(4-aminophenoxyphenyl)propane), poly(1,2,3,4-cyclobutanetetracarboxylic acid-4,4'-oxydiamine), poly(1,2,3,4-cyclobutanetetracarboxylic acid-2,2-bis£4-(4-aminophenoxy)phenyl|-hexafluoropropane), poly(1,2,3,4-cyclobutanetetracarboxylic acid-2,2-bis(4-aminophenoxyphenyl)propane), poly(2,2-bis(3,4-dicarboxylphenyl)hexafluoropropane dianhydride-4,4'-oxydiamine), poly(2,2-bis(3,4-dicarboxylphenyl)hexafluoropropane dianhydride-2,2-bis£4-(4-aminophenoxy)phenyl|-hexafluoropropane), poly(2,2-bis(3,4-dicarboxylphenyl)hexafluoropropane dianhydride-2,2-bis(4-aminophenoxyphenyl)propane), and copolymers prepared by using monomers used to prepare the polyimide-based polymers, and dissolving the mixture in an organic solvent; spin coating the polymer dissolved in an organic solvent; heating the coated polymer to obtain an alignment layer; and radiating a UV ray to the alignment layer. Preferably the spin coating is carried out by 1,000-3,000 rpm for 10 sec to 10 min, and the heating is carried out at a temperature of 100-300 deg.C for 10-300 min.
    • 目的:提供一种液晶取向层及其制备方法,通过使用肉桂酸酯类聚合物和聚酰亚胺类聚合物,提高热稳定性和取向性,并提高线斜角。 方法:该方法包括以下步骤:混合一种化合物,选自10-90wt%的C 1 -C 20的聚(乙烯基肉桂酸酯),聚(乙烯基氟代肉桂酸酯)和聚(乙烯基氟代肉桂酸乙烯酯)的聚(乙烯基烷氧基氟肉桂酸酯) C1-C20和聚酰亚胺基聚合物的混合物,其选自90-10重量%的聚(均苯四酸二酐-4,4'-氧二胺),聚(1,2,4,5-苯四酸二酐-2,2-双 (4-氨基苯氧基)苯基| - 六氟丙烷),聚(1,2,4,5-苯四酸二酐-2,2-双(4-氨基苯氧基苯基)丙烷),聚(1,2,3,4-环丁烷四羧酸-4,4'-氧二胺) 聚(1,2,3,4-环丁烷四羧酸-2,2-双-4-(4-氨基苯氧基)苯基 - 六氟丙烷),聚(1,2,3,4-环丁烷四羧酸-2,2-二 (4-氨基苯氧基苯基)丙烷),聚(2,2-双(3,4-二羧基苯基)六氟丙烷二酐-4,4'-氧二胺),聚(2,2-双(3,4-二羧基苯基)六氟丙烷二酐 - 2,2-双(4-氨基苯氧基)苯基| - 六氟丙烷),聚 (2,2-二(3,4-二羧基苯基)六氟丙烷二酐-2,2-双(4-氨基苯氧基苯基)丙烷)和通过使用用于制备聚酰亚胺基聚合物的单体制备的共聚物,并将该混合物溶解在 有机溶剂; 旋转涂覆溶解在有机溶剂中的聚合物; 加热涂布的聚合物以获得取向层; 并向对准层辐射紫外线。 优选旋转涂层通过1000-3,000rpm进行10秒至10分钟,并且在100-300℃的温度下加热10-300分钟。