发明公开
EP1002848A1 Supertwisted nematic liquid crystal displays
有权
Supertwist-nematischeFlüssigkristallanzeigen
- 专利标题： Supertwisted nematic liquid crystal displays
- 专利标题（中）： Supertwist-nematischeFlüssigkristallanzeigen
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申请号： EP99122029.4申请日： 1999-11-12
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公开(公告)号： EP1002848A1公开(公告)日： 2000-05-24
- 发明人: Kojima, Akihiro , Shimano, Fumio , Fujii, Yukilo , Saito, Izumi , Totani, Kazuo
- 申请人： MERCK PATENT GmbH
- 申请人地址： Frankfurter Strasse 250 64293 Darmstadt DE
- 专利权人： MERCK PATENT GmbH
- 当前专利权人： MERCK PATENT GmbH
- 当前专利权人地址： Frankfurter Strasse 250 64293 Darmstadt DE
- 优先权： EP98121578 19981119
- 主分类号： C09K19/02
- IPC分类号： C09K19/02 ; C09K19/46
摘要：
The invention relates to supertwist liquid-crystal displays (STN-LCDs) having short switching times and good steepnesses and angle dependencies, and to the novel nematic liquid-crystal mixtures used therein, which comprise compounds having a 3,4,5-trifluorophenyl group together with compounds of formula I
wherein
R 3 is an alkenyl group with 2 to 7 C atoms,
R 4 is an optionally fluorinated alkyl, alkoxy, alkenyl or alkenyloxy group with 1 to 12 C atoms, wherein one or two non-adjacent CH 2 groups can be replaced by -O-, -CH=CH-, -CO-, -OCO- or -COO- in such a manner that O atoms are not directly adjacent to one another, or, in case m = 1, R 4 can also be Q-Y,
Q is CF 2 , OCF 2 , CFH, OCFH or a single bond,
Y is F or Cl,
L 1 and L 2 are each independently H or F, and
m is 0 or 1.
wherein
R 3 is an alkenyl group with 2 to 7 C atoms,
R 4 is an optionally fluorinated alkyl, alkoxy, alkenyl or alkenyloxy group with 1 to 12 C atoms, wherein one or two non-adjacent CH 2 groups can be replaced by -O-, -CH=CH-, -CO-, -OCO- or -COO- in such a manner that O atoms are not directly adjacent to one another, or, in case m = 1, R 4 can also be Q-Y,
Q is CF 2 , OCF 2 , CFH, OCFH or a single bond,
Y is F or Cl,
L 1 and L 2 are each independently H or F, and
m is 0 or 1.
公开/授权文献
- EP1002848B1 Supertwisted nematic liquid crystal displays 公开/授权日：2005-06-15
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