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.: US12049633Application Date: 2008-03-17
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Publication No.: US07767279B2Publication Date: 2010-08-03
- Inventor: Norikatsu Hattori , Shigeru Kibe , Masayuki Saito
- Applicant: Norikatsu Hattori , Shigeru Kibe , Masayuki Saito
- Applicant Address: JP Tokyo JP Osaka
- Assignee: Chisso Petrochemical Corporation,Chisso Corporation
- Current Assignee: Chisso Petrochemical Corporation,Chisso Corporation
- Current Assignee Address: JP Tokyo JP Osaka
- Agency: J.C. Patents
- Priority: JP2007-074525 20070322
- Main IPC: C09K19/34
- IPC: C09K19/34 ; C09K19/30 ; C09K19/32 ; C09K19/12 ; C09K19/20 ; G02F1/13

Abstract:
The invention is to provide 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 negatively large dielectric anisotropy, a large specific resistance, a high stability to ultraviolet light, a high stability to heat and so forth. A liquid crystal composition having a negative dielectric anisotropy comprising two components, wherein the first component is at least one compound selected from the group of compounds represented by formula (1-1) and formula (1-2), and the second component is at least one compound selected from the group of compounds represented by formula (2-1) and formula (2-2): wherein R1 and R2 are each independently alkyl having 1 to 12 carbons, alkoxy having from 1 to 12 carbons, alkenyl having 2 to 12 carbons or alkenyl having 2 to 12 carbons, arbitrary hydrogen of which is replaced by fluorine; Z1 is a single bond, ethylene, methyleneoxy or carbonyloxy; ring A and ring B are each independently tetrahydropyran-2,5-diyl, 1,4-cyclohexylene, or 1,4-phenylene, at least one of ring A and ring B is tetrahydropyran-2,5-diyl.
Public/Granted literature
- US20080303001A1 LIQUID CRYSTAL COMPOSITION AND LIQUID CRYSTAL DISPLAY DEVICE Public/Granted day:2008-12-11
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