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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.:

US 9605208 B1

PDFFull Text
Date of Patent:
Mar. 28, 2017

Filed:

Jul. 24, 2013

Nematic liquid crystal composition

Applicant:

Dic Corporation, Tokyo, JP;

Inventors:

Masakazu Kaneoya, Kita-adachi-gun, JP;

Kiyofumi Takeuchi, Kita-adachi-gun, JP;

Masashi Osawa, Kita-adachi-gun, JP;

Kenta Tojo, Kita-adachi-gun, JP;

Tetsuo Kusumoto, Kita-adachi-gun, JP;

Assignee:

DIC CORPORATION, Tokyo, JP;

Attorney:

Westerman, Hattori, Daniels & Adrian, LLP

Primary Examiner:

Ruiyun Zhang

Int. Cl.
CPC ...
C09K 19/00 (2006.01); C09K 19/34 (2006.01); C09K 19/20 (2006.01); C09K 19/32 (2006.01); C09K 19/44 (2006.01); G02F 1/1337 (2006.01); G02F 1/137 (2006.01); C09K 19/04 (2006.01); C09K 19/12 (2006.01); C09K 19/30 (2006.01);
U.S. Cl.
CPC ...
C09K 19/3402 (2013.01); C09K 19/20 (2013.01); C09K 19/322 (2013.01); C09K 19/44 (2013.01); G02F 1/137 (2013.01); G02F 1/1337 (2013.01); G02F 1/133723 (2013.01); C09K 2019/0448 (2013.01); C09K 2019/0466 (2013.01); C09K 2019/122 (2013.01); C09K 2019/123 (2013.01); C09K 2019/124 (2013.01); C09K 2019/301 (2013.01); C09K 2019/3004 (2013.01); C09K 2019/3012 (2013.01); C09K 2019/3016 (2013.01); C09K 2019/3019 (2013.01); C09K 2019/3025 (2013.01); C09K 2019/3422 (2013.01); G02F 2001/13706 (2013.01); Y10T 428/10 (2015.01); Y10T 428/1005 (2015.01); Y10T 428/1018 (2015.01); Y10T 428/1023 (2015.01);
Abstract

A liquid crystal composition exhibits a positive dielectric anisotropy and sufficiently low viscosity without decreasing or increasing refractive index anisotropy or nematic phase-isotropic liquid phase transition temperature, and does not cause display failures. The liquid crystal composition contains one or more compounds selected from compounds represented by general formula (LC0) and one or more compounds selected from a group of compounds represented by general formula (LC1) to general formula (LC5), in which the liquid crystal composition contains one or more compounds in which at least one of A, A, and Ato Ain general formulae (LC0) to (LC4) represents a tetrahydropyran-2,5-diyl group.

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