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.: US13054893Application Date: 2009-07-23
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Publication No.: US08236197B2Publication Date: 2012-08-07
- Inventor: Shigeru Kibe , Masayuki Saito
- Applicant: Shigeru Kibe , Masayuki Saito
- 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: JP2008-204052 20080807; JP2008-205236 20080808
- International Application: PCT/JP2009/063161 WO 20090723
- International Announcement: WO2010/016389 WO 20100211
- Main IPC: C09K19/30
- IPC: C09K19/30 ; C09K19/12 ; C09K19/20

Abstract:
The subject is to provide a liquid crystal composition that satisfies at least one characteristic 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 negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light and a high stability to heat, or that is suitably balanced regarding two characteristics thereof. The subject is to provide 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.The invention provides a liquid crystal composition having a negative dielectric anisotropy that contains a specific compound having negatively large dielectric anisotropy as the first component, a specific compound having negatively large dielectric anisotropy and a low minimum temperature as the second component, a specific compound having a high maximum temperature and a small viscosity as the third component, and a specific compound having a negatively especially large dielectric anisotropy as the fourth component, and provides a liquid crystal display device containing the composition.
Public/Granted literature
- US20110133123A1 LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE Public/Granted day:2011-06-09
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