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:
Oct. 28, 2008
Filed:
Feb. 22, 2002
Kouichi Tanaka, Kita-ku, JP;
Syoushi Takahashi, Kita-ku, JP;
Kenichiro Yoshioka, Kita-ku, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Polatechno Co., Ltd., Tokyo, JP;
Abstract
A UV-curable resin composition for alignment film and an alignment film which is prepared by curing the composition with UV rays. The migration of a material which is present in a polymer film and capable of affecting the optical properties of a liquid crystalline compound layer to the liquid crystalline compound layer is controlled or blocked. The composition comprises at least one (meth)acrylate compound having one or more polar groups and one or more (meth)acryloyl groups in the molecule and a photoinitiator. A protective layer is inserted between a polymer film and a liquid crystalline compound layer for controlling or blocking the migration of the material which is present in the polymer film and capable of affecting the optical properties of the liquid crystalline compound layer.