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. 13, 2012
Filed:
Dec. 27, 2005
Yoshiyuki Ono, Yachimata, JP;
Kazunori Maruyama, Chiba, JP;
Yoshiyuki Ono, Yachimata, JP;
Kazunori Maruyama, Chiba, JP;
DIC Corporation, Tokyo, JP;
Abstract
An optical filmof the present invention includes a plurality of optically anisotropic layerswhich are laminated, wherein the optically anisotropic layer including: a photoalignment layer (A), in which a liquid crystal aligning capability has been generated by means of photoirradiation; and a polymer layer (B), which contains a liquid crystal compound that has a polymerizable group, and which is obtained by polymerization in a state where it has been aligned by the photoalignment layer (A), wherein the photoalignment layer (A)and the polymer layer (B)are bonded by covalent bonding. The plurality of optically anisotropic layersmay be an optically anisotropic layerhaving a function of a one-half wavelength plate, and an optically anisotropic layerhaving a function of a one-quarter wavelength plate.