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. 23, 2003
Filed:
Apr. 25, 2001
Chizu Sekine, Tsukuba, JP;
Koichi Fujisawa, Tsukuba, JP;
Kazunori Iwakura, Ibaraki, JP;
Masayoshi Minai, Moriyama, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
Abstract
The present invention provides novel phenylacetylene compounds, liquid crystal compositions having a large refractive index anisotropy (&Dgr;n), and liquid crystal elements produced with the same. The liquid crystal composition contains at least one compound of formula (3A), and at least one compound selected from the group consisting of compounds of any one of formulae (3B) to (3C), wherein A to A : alkyl group optionally substituted with F; R , R : H, F; A to A : H, F; m: 0 or 1; Rings A to D: 1,4-phnylene, 1,4-cyclohexylene; R , R : H, F; Z to Z : —COO—, —OCO—; b to d: 0 or 1 with b+c+d□1; B to B : alkyl or alkoxy group; R , R : H, F: