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:
Mar. 02, 2010
Filed:
Dec. 14, 2005
Shotaro Kawakami, Kumagaya, JP;
Takashi Matsumoto, Kitaadachi-gun, JP;
Tetsuo Kusumoto, Ageo, JP;
Yoshitaka Saito, Iwatsuki, JP;
Yutaka Nagashima, Saitama, JP;
Makoto Negishi, Saitama, JP;
Masayuki Iwakubo, Kitaadachi-gun, JP;
Shotaro Kawakami, Kumagaya, JP;
Takashi Matsumoto, Kitaadachi-gun, JP;
Tetsuo Kusumoto, Ageo, JP;
Yoshitaka Saito, Iwatsuki, JP;
Yutaka Nagashima, Saitama, JP;
Makoto Negishi, Saitama, JP;
Masayuki Iwakubo, Kitaadachi-gun, JP;
Dainippon Ink & Chemicals, Inc., Tokyo, JP;
Abstract
The present invention provides a liquid crystal composition having a negative dielectric anisotropy whose absolute value is large, and a low viscosity, and also provides a VA type liquid crystal element using the same. Disclosed is a liquid crystal composition containing a compound represented by the general formula (I) and an alkenyl compound represented by the general formula (II): By combining the liquid compounds according to the present invention, a liquid crystal composition having a low viscosity and a negative dielectric anisotropy could be obtained while nearly maintaining physical properties such as refractive anisotropy. By using the composition, a liquid crystal element having excellent reliability, capable of maintaining a high voltage retention until a high temperature region, is provided, and the display is very applicable as a VA type, ECB type, or IPS type liquid crystal display, and is particularly effective for speeding up response without thinning cell gaps.