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:
Apr. 17, 2012
Filed:
Mar. 01, 2007
Yohei Takano, Kanagawa, JP;
Hiroyuki Sugimoto, Kanagawa, JP;
Toshiaki Tokita, Kanagawa, JP;
Koh Fujimura, Tokyo, JP;
Yasuyuki Takiguchi, Kanagawa, JP;
Yumi Matsuki, Kanagawa, JP;
Haruki Amagawa, Shizuoka, JP;
Toshiaki Nonaka, Shizuoka, JP;
Yohei Takano, Kanagawa, JP;
Hiroyuki Sugimoto, Kanagawa, JP;
Toshiaki Tokita, Kanagawa, JP;
Koh Fujimura, Tokyo, JP;
Yasuyuki Takiguchi, Kanagawa, JP;
Yumi Matsuki, Kanagawa, JP;
Haruki Amagawa, Shizuoka, JP;
Toshiaki Nonaka, Shizuoka, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A liquid crystal element comprising a pair of transparent substrates, a liquid crystal layer which fills in between the pair of substrates and can form a chiral smectic C phase in homeotropic orientation, and an electrode which generates, at least, an electric field (parallel electric field) in directions parallel to a principal face of the substrate for the liquid crystal layer is provided, wherein the liquid crystal layer comprises, at least, a chiral compound of the following general formula (1-I) or a chiral compound of the following general formula (2-I) and a chiral compound of the following general formula (2 -II) in a base liquid crystal material which can provide a phase sequence of an isotropic liquid phase, a nematic phase, a smectic A phase and a smectic C phase from a higher temperature side, wherein R, A, Z, Z, m and 1 in formula (1-I), X, R, R, and * in formula (2-I), and X, R, R, R, and * in formula (2-II) are defined in the specification.