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.:
Date of Patent:
Jul. 12, 2011
Filed:
Apr. 14, 2010
Takashi Hiraoka, Chiba, JP;
Masayuki Saito, Chiba, JP;
Takashi Hiraoka, Chiba, JP;
Masayuki Saito, Chiba, JP;
JNC Corporation, Tokyo, JP;
CHISSO Petrochemical Corporation, Tokyo, JP;
Abstract
The invention provides a liquid crystal composition that satisfies at least one characteristic among the characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a large optical anisotropy, a large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light, and a high stability to heat, or provides a liquid crystal composition that is properly balanced regarding at least two characteristics. The invention provides an AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth. A liquid crystal composition having a nematic phase, wherein the first component may contain a specific optical active compound, the second component may contain a specific compound having a small minimum temperature and a large optical anisotropy, the third component may contain a specific compound having a large maximum temperature or a small viscosity, and the fourth component may contain a specific compound having a small minimum temperature, and positively large dielectric anisotropy. The liquid crystal display device contains the liquid crystal composition.