The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 19, 2015
Filed:
Aug. 21, 2014
Sharp Kabushiki Kaisha, Osaka-shi, Osaka, JP;
Jnc Corporation, Chiyoda-ku, Tokyo, JP;
Isamu Miyake, Osaka, JP;
Hiroaki Asagi, Osaka, JP;
Toshihiro Matsumoto, Osaka, JP;
Koichi Miyachi, Osaka, JP;
Youichiro Ooki, Ichihara, JP;
Fumitaka Kondo, Ichihara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
JNC Corporation, Tokyo, JP;
Abstract
Provided is a method for manufacturing a liquid crystal display device that includes a photoalignment film. The photoalignment film is formed from a liquid crystal alignment agent, and aligns liquid crystal molecules horizontally to the main face of the at least one of the substrates. The liquid crystal alignment agent contains a solvent and at least two kinds of polyamic acids or their derivatives obtained by reacting diamine and tetracarboxylic dianhydride. At least two of the diamines and at least one of the tetracarboxylic dianhydrides are compounds represented by predetermined formulas. The method includes the steps of: (1) forming the film of the liquid crystal alignment agent; (2) pre-baking the film; (3) irradiating the pre-baked film with light; and (4) post-baking the irradiated film, the step (4) including an operation of post-baking the film multiple times at temperatures ranging from low to high temperatures.