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.: US12639756Application Date: 2009-12-16
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Publication No.: US08211332B2Publication Date: 2012-07-03
- Inventor: Norikatsu Hattori , Subaru Kawasaki
- Applicant: Norikatsu Hattori , Subaru Kawasaki
- Applicant Address: JP Tokyo JP Tokyo
- Assignee: JNC Corporation,Chisso Petrochemical Corporation
- Current Assignee: JNC Corporation,Chisso Petrochemical Corporation
- Current Assignee Address: JP Tokyo JP Tokyo
- Agency: Hogan Lovells US LLP
- Priority: JP2009-007931 20090116
- Main IPC: C09K19/00
- IPC: C09K19/00 ; C09K19/06 ; C09K19/36 ; C09K19/52

Abstract:
The subject is to provide a liquid crystal composition that satisfies at least one characteristic among characteristics such as a high maximum temperature of a nematic phase, a low minimum temperature of a nematic phase, a low 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 or more characteristics. The subject is to provide an AM device that has a short response time, a high voltage holding ratio, a high 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 a negatively large dielectric anisotropy as a first component, and a two-ring compound having a low viscosity as a second component, and may contain a specific compound having a low viscosity as a third component and/or a specific compound having a negatively large dielectric anisotropy as a fourth component, and provide a liquid crystal display device containing the composition.
Public/Granted literature
- US20100181532A1 Liquid Crystal Composition and Liquid Crystal Display Device Public/Granted day:2010-07-22
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