发明公开
EP0567854A1 Ferroelectric liquid crystal mixtures and displays using same
失效
FerroelektrischeFlüssigkristallmischungensowie dieselben verwendende Anzeigen。
- 专利标题： Ferroelectric liquid crystal mixtures and displays using same
- 专利标题（中）： FerroelektrischeFlüssigkristallmischungensowie dieselben verwendende Anzeigen。
-
申请号： EP93106129.5申请日： 1993-04-15
-
公开(公告)号： EP0567854A1公开(公告)日： 1993-11-03
- 发明人: Harada, Takamasa , Escher, Claus, Dr. , Ilian, Gerhard, Dr. , Kaltbeitzel, Anke, Dr. , Rösch, Norbert, Dr.
- 申请人： HOECHST AKTIENGESELLSCHAFT
- 申请人地址： D-65926 Frankfurt am Main DE
- 专利权人： HOECHST AKTIENGESELLSCHAFT
- 当前专利权人： HOECHST AKTIENGESELLSCHAFT
- 当前专利权人地址： D-65926 Frankfurt am Main DE
- 优先权： JP144734/92 19920420
- 主分类号： C09K19/02
- IPC分类号： C09K19/02 ; C09K19/58
摘要：
Electro-optical display devices having a cell thickness of 1 to 10 µm, and containing ferroelectric liquid crystalline mixture, electrodes, alignment layer(s), in which the ferroelectric liquid crystalline mixture has a spontaneous polarization of Ps > 20 nC·cm⁻² and a natural helical pitch of less than a half of the cell thickness, and contains lipophilizing, lipophilic or amphiphilic compounds for eliminating ionic impurities.
Ferroelectric liquid crystal compositions according to the invention show a significantly reduced surface memory effect and an improved display contrast.
Ferroelectric liquid crystal compositions according to the invention show a significantly reduced surface memory effect and an improved display contrast.
信息查询
