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 9039929 B1

Date of Patent:

May. 26, 2015

Filed:

Jul. 31, 2012

Nematic liquid crystal composition

Applicants:

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;

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:

Shean C Wu

Int. Cl.

CPC ...

C09K 19/20 (2006.01); C09K 19/12 (2006.01); C09K 19/30 (2006.01); C09K 19/32 (2006.01); C09K 19/34 (2006.01); C09K 19/54 (2006.01); C09K 19/42 (2006.01); C09K 19/16 (2006.01); C09K 19/18 (2006.01); C09K 19/04 (2006.01);

U.S. Cl.

CPC ...

C09K 19/3402 (2013.01); C09K 2019/122 (2013.01); C09K 2019/123 (2013.01); C09K 2019/161 (2013.01); C09K 2019/166 (2013.01); C09K 2019/181 (2013.01); C09K 2019/183 (2013.01); C09K 19/2007 (2013.01); C09K 2019/3004 (2013.01); C09K 2019/3009 (2013.01); C09K 2019/3015 (2013.01); C09K 2019/305 (2013.01); C09K 2019/3051 (2013.01); C09K 2019/3037 (2013.01); C09K 19/20 (2013.01); C09K 19/3066 (2013.01); C09K 19/322 (2013.01); C09K 19/42 (2013.01); C09K 2019/0448 (2013.01); C09K 2019/0466 (2013.01); C09K 2019/124 (2013.01); C09K 2019/301 (2013.01); C09K 2019/3012 (2013.01); C09K 2019/3016 (2013.01); C09K 2019/3019 (2013.01); C09K 2019/3025 (2013.01); C09K 2019/3036 (2013.01); C09K 2019/304 (2013.01); C09K 2019/3063 (2013.01); C09K 2019/3077 (2013.01); C09K 2019/3422 (2013.01);

Abstract

A nematic liquid crystal composition of the present invention is used in liquid crystal display devices of the TN mode, OCB mode, ECB mode, IPS mode, or VA-IPS mode. The liquid crystal composition has positive dielectric anisotropy. Since the refractive index anisotropy and the nematic phase-isotropic liquid phase transition temperature are decreased and the increase in the lower limit temperature of the nematic phase is suppressed, the viscosity of the liquid crystal composition is sufficiently low without degrading the nematic phase temperature range. The liquid crystal composition also offers excellent features such as high-speed response, good display quality, and less display failures and is thus suitable as a practical liquid crystal composition.

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