发明授权
- 专利标题: Ferroelectric liquid crystal devices using field-stabilized states
- 专利标题(中): 铁电液晶器件采用场稳态
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申请号: US727690申请日: 1985-04-26
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公开(公告)号: US4707078A公开(公告)日: 1987-11-17
- 发明人: John M. Geary
- 申请人: John M. Geary
- 申请人地址: NJ Murray Hill
- 专利权人: American Telephone and Telegraph Company, AT&T Bell Laboratories
- 当前专利权人: American Telephone and Telegraph Company, AT&T Bell Laboratories
- 当前专利权人地址: NJ Murray Hill
- 主分类号: G02F1/133
- IPC分类号: G02F1/133 ; G02F1/137 ; G02F1/141 ; G09G3/18
摘要:
In a display device utilizing ferroelectric (e.g., chiral, smectic C material), a stabilizing electric field perpendicular to the cell surfaces forces the molecules to orient themselves in one of two states both of which are parallel to the cell surfaces. A particular state is selected by a switching electric field also oriented perpendicular to the cell surfaces. The stabilizing field has a half-cycle time shorter than the switching time of the ferroelectric material, whereas the switching field duration is longer than or equal to the switching time of the material. The invention enables the use of relatively thick (e.g., .gtoreq.2 .mu.m) ferroelectric cells.
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