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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 10544365 B1

PDFFull Text
Date of Patent:
Jan. 28, 2020

Filed:

Aug. 21, 2014

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:

Geraldina Visconti

Int. Cl.
CPC ...
G02F 1/1333 (2006.01); C09K 19/34 (2006.01); C09K 19/30 (2006.01); C09K 19/32 (2006.01); C07C 43/247 (2006.01); C07D 309/04 (2006.01); C07D 319/06 (2006.01); C09K 19/02 (2006.01); C09K 19/54 (2006.01); C09K 19/56 (2006.01); G02F 1/1337 (2006.01); C09K 19/12 (2006.01); C09K 19/04 (2006.01); G02F 1/00 (2006.01);
U.S. Cl.
CPC ...
C09K 19/3402 (2013.01); C07C 43/247 (2013.01); C07D 309/04 (2013.01); C07D 319/06 (2013.01); C09K 19/0208 (2013.01); C09K 19/3066 (2013.01); C09K 19/322 (2013.01); C09K 19/542 (2013.01); C09K 19/56 (2013.01); G02F 1/133711 (2013.01); G02F 1/133788 (2013.01); C07C 2601/14 (2017.05); C09K 2019/0466 (2013.01); C09K 2019/124 (2013.01); C09K 2019/3025 (2013.01); C09K 2019/3422 (2013.01); C09K 2019/548 (2013.01); G02F 1/0045 (2013.01);
Abstract

A liquid crystal composition that has a positive dielectric anisotropy and a sufficiently low viscosity and that causes no display defects when used in liquid crystal display devices is provided without decreasing or increasing the refractive index anisotropy or nematic phase-isotropic liquid phase transition temperature. This liquid crystal composition contains at least one compound selected from compounds represented by general formula (LC0) and at least one compound selected from the group consisting of compounds represented by general formulas (LC1) to (LC5). This liquid crystal composition can be used to provide a reliable liquid crystal display device capable of maintaining a high voltage-holding ratio at high temperatures. This liquid crystal display device is highly practical as a liquid crystal display and is effective in achieving quick response without significantly decreasing the cell gap.

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