Invention Grant
- Patent Title: Liquid crystal composition and electro-optic display device
- Patent Title (中): 液晶组成和电光显示装置
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Application No.: US741720Application Date: 1996-10-31
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Publication No.: US5776366APublication Date: 1998-07-07
- Inventor: Yoshitaka Tomi , Tetsuya Matsushita , Fusayuki Takeshita , Katsuyuki Murashiro , Etsuo Nakagawa
- Applicant: Yoshitaka Tomi , Tetsuya Matsushita , Fusayuki Takeshita , Katsuyuki Murashiro , Etsuo Nakagawa
- Applicant Address: JPX Osaka-fu
- Assignee: Chisso Corporation
- Current Assignee: Chisso Corporation
- Current Assignee Address: JPX Osaka-fu
- Priority: JPX7-310040 19951102
- Main IPC: G02F1/13
- IPC: G02F1/13 ; C09K19/02 ; C09K19/30 ; C09K19/46 ; C09K19/58 ; C09K19/52
Abstract:
A chiral, nematic liquid crystal composition suitable to STN-LCD, having superior steepness, rapid response and being able to prevent occurrence of high order and low order domain of LCD, which composition contains as a first component, at least one compound expressed by the formula (1) ##STR1## as a second component, at least one compound expressed by the formula (2) ##STR2## and as a third component, at least one compound of benzonitrile group, ##STR3## and further having a chiral dopant as a fourth component. In the above formulas, R.sup.1 and R.sup.2 each represent a linear alkyl group of 1 to 10 carbon atoms, A and B each represent trans-1,4-cyclohexylene or 1,4-phenylene, and R.sup.3 represents a linear alkyl group of 1 to 10 carbon atoms, or a group wherein an optional --CH.sub.2 -- or two or more not adjacent --CH.sub.2 --s present in the above group are replaced by --O-- or --CH=CH--; X.sup.1 and X.sup.2 each independently represent H or F; C represents --COO--, --C.sub.2 H.sub.4 --, trans-1,4-cyclohexylene or 1,4-phenylene; and n represents 0 or 1, and as a fourth component, a chiral dopant in a quantity in which a ratio (d/p) of the thickness (d.mu.m) of a liquid crystal layer in a liquid crystal cell to be filled with the liquid crystal composition to the helical pitch thereof (p.mu.m) is 0.03 to 2.0.
Public/Granted literature
- US5192911A NMR probe incorporating RF shielding of sample Public/Granted day:1993-03-09
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