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:
Nov. 27, 2007
Filed:
Jan. 27, 2005
Tsai-an Yu, Hsin Chu Hsien, TW;
Pi-sung Lin, Taipei Hsien, TW;
Chih-jen Chen, Taipei Hsien, TW;
Chiu-fang Huang, Taipei Hsien, TW;
Wen-yi Lin, Yuan Hsien, TW;
Tsai-An Yu, Hsin Chu Hsien, TW;
Pi-Sung Lin, Taipei Hsien, TW;
Chih-Jen Chen, Taipei Hsien, TW;
Chiu-Fang Huang, Taipei Hsien, TW;
Wen-Yi Lin, Yuan Hsien, TW;
Far Eastern Textile Ltd., Taipei, TW;
Abstract
An optical compensator includes a C-plate adapted to be coupled to a liquid crystal cell and made from a polymer. The C-plate has a layer thickness ranging from 5 to 60 μm. The polymer is polyvinyl alcohol, has a polymerization degree greater than 2000 and less than 5000, and is cross-linked so that the C-plate has an optical axis substantially parallel to the direction of normally incident light, and so that the C-plate has a plate retardation, along the layer thickness of the C-plate, greater than 60 nm.