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:
May. 19, 2009
Filed:
Mar. 08, 2005
Hideyuki Nishikawa, Minami-ashigara, JP;
Ryo Hamasaki, Minami-ashigara, JP;
Atsuhiro Ohkawa, Ashigara-kami-gun, JP;
Hideyuki Nishikawa, Minami-ashigara, JP;
Ryo Hamasaki, Minami-ashigara, JP;
Atsuhiro Ohkawa, Ashigara-kami-gun, JP;
Fujifilm Corporation, Minato-Ku, Tokyo, JP;
Abstract
A new liquid crystal compound comprises two condensed and substituted rings. The ring preferably is a five-membered heterocyclic ring. The heterocyclic ring is preferably condensed with benzene ring or an aromatic six-membered heterocyclic ring. The benzene ring or the aromatic six-membered heterocyclic ring is preferably substituted with a group comprising a cyclic structure and a chain structure. The liquid crystal compound is advantageously used in preparation of a thin phase retarder, such as a wide-ranged λ/4 plate, which gives inverse wavelength distribution. The phase retarder can be easily produced according to a simple process by using the new liquid crystal compound.