Invention Grant
- Patent Title: Liquid crystal composition and liquid crystal display device
- Patent Title (中): 液晶组成和液晶显示装置
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Application No.: US13124643Application Date: 2009-09-24
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Publication No.: US08475679B2Publication Date: 2013-07-02
- Inventor: Yoshimasa Furusato , Norikatsu Hattori , Subaru Kawasaki
- Applicant: Yoshimasa Furusato , Norikatsu Hattori , Subaru Kawasaki
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: JNC Corporation,JNC Petrochemical Corporation
- Current Assignee: JNC Corporation,JNC Petrochemical Corporation
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: J.C. Patents
- Priority: JP2008-270640 20081021
- International Application: PCT/JP2009/066541 WO 20090924
- International Announcement: WO2010/047206 WO 20100429
- Main IPC: C09K19/00
- IPC: C09K19/00 ; C09K19/06 ; C09K19/34 ; C09K19/52

Abstract:
The invention is to provide a liquid crystal composition that satisfies at least one of characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a small viscosity, a suitable optical anisotropy, a large negative dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding at least two of the characteristics; and is to provide a AM device that has a short response time, a large voltage holding ratio, a large contrast ratio, a long service life and so forth, wherein the liquid crystal composition has negative dielectric anisotropy and includes a two-ring compound having a large negative dielectric anisotropy and having at least three fluorines or chlorines at the lateral positions as a first component, a specific compound having a large negative dielectric anisotropy as a second component, a specific compound having a small viscosity as a third component, and a specific compound having a large negative dielectric anisotropy as a fourth component, and the liquid crystal display device contains this composition.
Public/Granted literature
- US20110198537A1 LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE Public/Granted day:2011-08-18
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