发明名称 |
HIGH CONTRAST DISTORTED HELIX EFFECT ELECTRO-OPTIC DEVICES AND TIGHT FERROELECTRIC PITCH FERROELECTRIC LIQUID CRYSTAL COMPOSITIONS USEFUL THEREIN |
摘要 |
High-contrast electro-optic device contain non-surface stabilized FLC cells which retain a helical diameter (~) structure and exhibit a change in optical anisotropy as a function of the magnitude of an applied electric field or driving voltage. The FLC cells incorporate chiral ferroelectric liquid crystals which exhibit a ferroelectric phase and a chiral nematic (N*) phase at temperatures above the ferroelectric phase and comprise uniformly spaced electrode-containing plates between which the FLC is aligned. The cell is provided with means for detecting the change in optical anisotropy in the FLC induced by the application of the electric field.
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申请公布号 |
CA2088934(C) |
申请公布日期 |
2003.06.03 |
申请号 |
CA19932088934 |
申请日期 |
1993.02.08 |
申请人 |
DISPLAYTECH, INC.;HOECHST AG |
发明人 |
WAND, MICHAEL D.;HANDSCHY, MARK A.;ESCHER, CLAUS;VOHRA, ROHINI T. |
分类号 |
C07C69/92;C07D213/30;C07D213/64;C07D213/65;C07D239/26;C07D239/34;C07D239/38;C07D303/24;C07D405/12;C09K19/02;C09K19/04;C09K19/12;C09K19/20;C09K19/34;C09K19/54;C09K19/58;G02F1/13;G02F1/1337;G02F1/141;(IPC1-7):G02F1/135 |
主分类号 |
C07C69/92 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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