Abstract:
PURPOSE: A liquid crystal alignment agent is provided to improve transmittance, response rate, liquid crystal alignment, and electro-optical performance and to facilitate the control of a pretilt angle. CONSTITUTION: A liquid crystal alignment agent comprises polyamic acid which includes a polymer which includes a structure unit represented by chemical formula 1, a polyimide represented by chemical formula 2, and a combination thereof. The weight average molecular weights of the polyamic acid and the polyimide are 10,000-500,000. The liquid crystal alignment agent comprises the polyamic acid and polyimide with a mixing ratio of 1:99-50:50. The liquid crystal alignment agent has a solid phase of 1-25 weight%. A liquid crystal film is manufactured by spreading the liquid crystal alignment agent on a substrate.
Abstract:
PURPOSE: A liquid crystal alignment agent is provided to improve response rate and transmittance, to improve electric performance and to easily control a pretilt angle. CONSTITUTION: A liquid crystal alignment agent comprises a polyamic acid which comprises a repeating unit represented by chemical formula 1, a polyimide which comprises a repeating unit indicated in chemical formula 2, and a polymer selected from combinations thereof. In chemical formula 1 and 2, each of X^1 and X^2 is independently quadrivalent organic groups derived from alicyclic dianhydride or aromatic dianhydride, and each of Y^1 and Y^2 is a divalent organic group derived from a diamine. The polyamic acid and polyimide has a weight average molecular weight of 10,000-300,000 g/mol.
Abstract:
PURPOSE: A liquid crystal aligning agent, liquid crystal aligning film manufactured by using the same, liquid crystal display device including the liquid crystal aligning film are provided to improve transmittance, response speed, liquid crystal alignment, and electro-optical characteristics. CONSTITUTION: A liquid crystal aligning agent comprises a first polymer and a second polymer. The first polymer comprises polyamic aid including recurring unit which is represented by chemical formula 1, polyimide including recurring unit which is represented by chemical formula 2, or a combination thereof. The second polymer comprises polyamic acid including recurring unit which is represented by chemical formula 4, polyimide including recurring unit which is represented by chemical formula 5, and a combination thereof. In the chemical formula 1 and 2, X1 and X2 are identical or different from each other and are respectively tetravalent organic groups which are driven from cycloaliphatic anhydride or aromatic acid dianhydride. Y1 and Y2 are identical or different from each other and respectively comprise divalent organic group which is driven from diamine represented by chemical formula 3. In the chemical formula 4 and 5, X3 and X4 are identical or different from each other and are respectively tetra organic groups which are driven from cycloaliphatic anhydride or aromatic acid dianhydride. Y3 and Y4 are identical or different from each other and divalent organic groups which are driven from diamine.
Abstract:
PURPOSE: A liquid crystal alignment agent is provided to have excellent aligning performance, to easily control line angle, to improve afterimage characteristic, liquid crystal orientation, and chemical resistance of a liquid crystal alignment film. CONSTITUTION: A liquid crystal alignment agent includes a polymer which is selected from polyamic acids including a structure unit represented by chemical formula 1, polyimides including a structure unit represented by chemical formula 2, and a combination thereof. In chemical formula 1 and 2, In chemical formula 1 and 2, each of X^1 and X^2 is the same as or different from each other, and is independently quadrivalent organic group derived from acid dianhydrides; each of Y^1 and Y^2 is the same as or different from each other, and is independently a divalent organic group derived from diamine.
Abstract translation:目的:提供液晶取向剂以具有优异的取向性能,容易控制线角度,改善液晶取向膜的残留图像特性,液晶取向和耐化学性。 构成:液晶取向剂包括选自包括由化学式1表示的结构单元的聚酰胺酸的聚合物,包括由化学式2表示的结构单元的聚酰亚胺及其组合。 在化学式1和化学式2中,在化学式1和2中,X 1和X 2中的每一个彼此相同或不同,并且独立地是来自酸二酐的四价有机基团; Y 1和Y 2中的每一个彼此相同或不同,并且独立地是衍生自二胺的二价有机基团。