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:
Sep. 25, 2007
Filed:
Feb. 18, 2005
Michitaka Matsuumi, Kanagawa, JP;
Shigeki Uehira, Kanagawa, JP;
Atsuhiro Ohkawa, Kanagawa, JP;
Fujifilm Corporation, Minato-Ku, Tokyo, JP;
Abstract
An optically anisotropic element comprises a discotic compound. The discotic compound has an oriented discotic plane. The discotic compound has a molecular structure represented by the formula (I) of D(—O—CO—CR═CR—X—R). In the formula (I), D is a discotic core, n is an integer of 3 to 20, each of Rand Ris hydrogen, a halogen atom or an alkyl group, X is —O—, —S— or —NR—, and Ris an alkyl group or an aryl group. A polymerizable discotic compound having an oriented discotic plane can be polymerized to form an optically anisotropic element. Alignment of the oriented discotic plane is fixed by polymerization. A new discotic compound is also disclosed.