Abstract: The present invention provides a liquid crystal photoalignment agent that includes a compound selected from the group consisting of a polyamic acid having a predetermined chemical formula, a polyimide polymer having a predetermined chemical formula, and a combination thereof, and a polyimide photopolymer. The liquid crystal photoalignment agent shows a long life-span, stably maintains a pretilt angle, and shows improved after-image characteristics, liquid crystal alignment properties, and chemical resistance.

Abstract: A liquid crystal alignment agent includes a first polymer including polyamic acid including a repeating unit represented by the following Chemical Formula 1, polyimide including a repeating unit represented by the following Chemical Formula 2, or a combination thereof. A liquid crystal alignment film manufactured using the liquid crystal alignment agent, and a liquid crystal display including the liquid crystal alignment film are also provided.

Abstract: Disclosed is a liquid crystal alignment agent including a polymer including polyamic acid including a repeating unit represented by Chemical Formula 1, polyimide including a repeating unit represented by Chemical Formula 2, or a combination thereof.

Abstract: Disclosed is an epoxy compound for a liquid crystal photo-alignment agent, a liquid crystal photo-alignment agent, and a liquid crystal photo-alignment film. The epoxy compound is represented by the following Chemical Formula 1. In the above Chemical Formula 1, each substituent is the same as defined in the specification. Since the epoxy compound according to an embodiment of the present invention may be prepared through a simple manufacturing process, it is possible to provide a liquid crystal photo-alignment agent and a liquid crystal photo-alignment film that are economical and have excellent substrate printability and reliability, and superb photoelectric characteristics.

Abstract: One embodiment of the present invention provides a liquid crystal photo-alignment agent that includes a polyamic acid copolymer including a repeating unit having the following Formula 1 and a repeating unit having the following Formula 2; a polyimide copolymer including a repeating unit having the following Formula 3 and a repeating unit having the following Formula 4; or a combination thereof: wherein the definition of R1 to R8 are the same as in the specification. The liquid crystal photo-alignment agent can have improved liquid crystal alignment properties, electrical characteristics such as voltage holding ratio, pretilt angle, residual DC, and the like, printability, cleaning stability, and spot stability, and is capable of unidirectionally aligning liquid crystals by ultraviolet (UV) exposure.

Abstract: Disclosed is a liquid crystal photo-alignment agent and a liquid crystal photo-alignment film manufactured using the same. The liquid crystal photo-alignment agent includes an epoxy compound represented by Chemical Formula 1, and a polymer including a polyamic acid, a polyimide, or a mixture thereof.

Abstract: 3,4-Dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-succinic dianhydride is provided. The tetracarboxylic dianhydride is represented by Formula 1, which is described in the specification. Further provided is a liquid crystal aligning agent comprising a polyimide prepared using the tetracarboxylic dianhydride and a solvent. Further provided is a liquid crystal alignment layer formed using the liquid crystal aligning agent. The liquid crystal alignment layer exhibits excellent electro-optical properties and good processability in terms of printability.

Abstract: The present invention provides a liquid crystal photoalignment agent that includes a compound selected from the group consisting of a polyamic acid having a predetermined chemical formula, a polyimide polymer having a predetermined chemical formula, and a combination thereof, and a polyimide photopolymer. The liquid crystal photoalignment agent shows a long life-span, stably maintains a pretilt angle, and shows improved after-image characteristics, liquid crystal alignment properties, and chemical resistance.

Abstract: Disclosed is an epoxy compound for a liquid crystal photo-alignment agent, a liquid crystal photo-alignment agent, and a liquid crystal photo-alignment film. The epoxy compound is represented by the following Chemical Formula 1. In the above Chemical Formula 1, each substituent is the same as defined in the specification. Since the epoxy compound according to an embodiment of the present invention may be prepared through a simple manufacturing process, it is possible to provide a liquid crystal photo-alignment agent and a liquid crystal photo-alignment film that are economical and have excellent substrate printability and reliability, and superb photoelectric characteristics.

Abstract: The liquid crystal alignment agent according to one embodiment of the present invention includes a soluble polyimide polymer of Formula 1 and a solvent. The soluble polyimide polymer has a number average molecular weight of about 10,000 to 500,000 g/mol, and a polydispersity of about 1.2 to about 1.75. The liquid crystal alignment agent can have good printability on a substrate, and thereby can provide a liquid crystal alignment film that can have excellent film uniformity, even though its predrying temperature is varied.

Abstract: 3,4-Dicarboxy-1,2,3,4-tetrahydro-6-t-butyl-1-naphthalene-succinic dianhydride is provided. The tetracarboxylic dianhydride is represented by Formula 1, which is described in the specification. Further provided is a liquid crystal aligning agent comprising a polyimide prepared using the tetracarboxylic dianhydride and a solvent. Further provided is a liquid crystal alignment layer formed using the liquid crystal aligning agent. The liquid crystal alignment layer exhibits excellent electro-optical properties and good processability in terms of printability.

Abstract: One embodiment of the present invention provides a liquid crystal photo-alignment agent that includes a polyamic acid copolymer including a repeating unit having the following Formula 1 and a repeating unit having the following Formula 2; a polyimide copolymer including a repeating unit having the following Formula 3 and a repeating unit having the following Formula 4; or a combination thereof: wherein the definition of R1 to R8 are the same as in the specification. The liquid crystal photo-alignment agent can have improved liquid crystal alignment properties, electrical characteristics such as voltage holding ratio, pretilt angle, residual DC, and the like, printability, cleaning stability, and spot stability, and is capable of unidirectionally aligning liquid crystals by ultraviolet (UV) exposure.

Abstract: A liquid crystal aligning agent suitable for use in the production of a liquid crystal display device is provided. The liquid crystal aligning agent comprises at least one polymer selected from a polyamic acid and a soluble polyimide, an aprotic polar solvent and monoethylene glycol dimethyl ether or dipropylene glycol dimethyl ether. The liquid crystal aligning agent has satisfactory printability. Further provided is a liquid crystal alignment layer formed using the aligning agent. The liquid crystal alignment layer is highly uniform.