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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 9005479 B1

PDFFull Text
Expired
Date of Patent:
Apr. 14, 2015

Filed:

Nov. 19, 2010

Liquid crystal display device

Applicants:

Takayoshi Yanai, Chiba, JP;

Masayuki Saito, Chiba, JP;

Inventors:

Takayoshi Yanai, Chiba, JP;

Masayuki Saito, Chiba, JP;

Assignees:

JNC Corporation, Tokyo, JP;

JNC Petrochemical Corporation, Tokyo, JP;

Attorney:

Jianq Chyun IP Office

Primary Examiner:

Geraldina Visconti

Int. Cl.
CPC ...
C09K 19/12 (2006.01); C09K 19/34 (2006.01); C09K 19/30 (2006.01); C09K 19/02 (2006.01); C09K 19/42 (2006.01); C09K 19/20 (2006.01); C09K 19/04 (2006.01); G02F 1/00 (2006.01); G02F 1/1343 (2006.01); G02F 1/137 (2006.01);
U.S. Cl.
CPC ...
C09K 19/42 (2013.01); C09K 19/20 (2013.01); C09K 19/3066 (2013.01); C09K 2019/0466 (2013.01); C09K 2019/122 (2013.01); C09K 2019/3004 (2013.01); C09K 2019/301 (2013.01); C09K 2019/3016 (2013.01); C09K 2019/3037 (2013.01); G02F 1/0045 (2013.01); G02F 2001/134372 (2013.01); G02F 2001/13706 (2013.01);
Abstract

The invention is to provide an AM device containing a liquid crystal composition satisfying at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of the nematic phase, a small viscosity, a large optical anisotropy, a large positive dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to and heat, or having a suitable balance regarding at least two of the characteristics, and the AM device having a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth; wherein a liquid crystal display device contains a liquid crystal composition having a positive dielectric anisotropy and containing a specific compound having a large positive dielectric anisotropy as a first component and a specific compound having a small viscosity as a second component.

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