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:
Jun. 19, 2012
Filed:
May. 30, 2008
Akihiko Uchiyama, Hino, JP;
Yuhei Ono, Hino, JP;
Jyuhou Matsuo, Hino, JP;
Satoshi Kitazawa, Hino, JP;
Akihiko Uchiyama, Hino, JP;
Yuhei Ono, Hino, JP;
Jyuhou Matsuo, Hino, JP;
Satoshi Kitazawa, Hino, JP;
Teijin Limited, Osaka, JP;
Abstract
The present invention provides a retardation film which can remarkably improve the controllability of retardation, and can also sufficiently control the wavelength dependency of retardation. The retardation film of the present invention can achieve a widening of the viewing angle at a high degree, when it is applied to a liquid crystal display device. Further, the present invention provides a laminated polarizing which comprises the retardation film and enables widening the viewing angle. Furthermore, the present invention provides a liquid crystal display device having high performance, especially a widened viewing angle. The retardation film of the present invention comprises a structural body which simultaneously has form birefringence and molecular-orientation birefringence. Specifically, the retardation film comprises a periodic structure () having a unit of at least two layers () having different average refractive indices from each other, and at least one of the at least two layers is a layer having optical anisotropy due to molecular-orientation birefringence.