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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 10428273 B1

PDFFull Text
Date of Patent:
Oct. 01, 2019

Filed:

Jul. 21, 2017

Liquid crystal compound having benzopyran skeleton, liquid crystal composition, and liquid crystal display device

Applicants:

Jnc Corporation, Tokyo, JP;

Jnc Petrochemical Corporation, Tokyo, JP;

Inventors:

Kazuo Okumura, Chiba, JP;

Tokifumi Masukawa, Chiba, JP;

Keiji Kimura, Chiba, JP;

Assignees:

JNC CORPORATION, Tokyo, JP;

JNC PETROCHEMICAL CORPORATION, Tokyo, JP;

Attorney:

JCIPRNET

Primary Examiner:

Geraldina Visconti

Int. Cl.
CPC ...
G02F 1/1333 (2006.01); C09K 19/34 (2006.01); C07D 311/76 (2006.01); C07D 405/08 (2006.01); C07D 405/12 (2006.01); C07D 407/10 (2006.01); C07D 407/12 (2006.01); C09K 19/18 (2006.01); C09K 19/30 (2006.01);
U.S. Cl.
CPC ...
C09K 19/3402 (2013.01); C07D 311/76 (2013.01); C07D 405/08 (2013.01); C07D 405/12 (2013.01); C07D 407/10 (2013.01); C07D 407/12 (2013.01); C09K 19/3466 (2013.01); C09K 2019/181 (2013.01); C09K 2019/301 (2013.01); C09K 2019/304 (2013.01); C09K 2019/3009 (2013.01); C09K 2019/3016 (2013.01); C09K 2019/3019 (2013.01); C09K 2019/3021 (2013.01); C09K 2019/3042 (2013.01); C09K 2019/3077 (2013.01); C09K 2019/3422 (2013.01); C09K 2019/3425 (2013.01);
Abstract

Shown are a liquid crystal compound satisfying at least one of physical properties such as high stability to heat and light, a high clearing point (or high maximum temperature), low minimum temperature of a liquid crystal phase, small viscosity, suitable optical anisotropy, large negative dielectric anisotropy, a suitable elastic constant and satisfactory compatibility with other liquid crystal compounds, a liquid crystal composition containing the compound and a liquid crystal display device including the composition. A compound is represented by formula (1), a liquid crystal composition contains the compound, or the like

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