发明授权
- 专利标题： Thermal method for controlling the optical properties of a liquid crystal and devices for the application of said method
- 专利标题（中）： 用于控制液晶的光学性质的热方法和用于所述方法的应用的装置
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申请号： US643144申请日： 1975-12-22
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公开(公告)号： US4031529A公开(公告)日： 1977-06-21
- 发明人: Joseph Borel , Jacques Robert
- 申请人： Joseph Borel , Jacques Robert
- 申请人地址： FR Paris
- 专利权人： Commissariat a l'Energie Atomique
- 当前专利权人： Commissariat a l'Energie Atomique
- 当前专利权人地址： FR Paris
- 优先权： FR74.42766 19741224
- 主分类号： G09G3/18
- IPC分类号： G09G3/18 ; G02F1/133 ; G02F1/137 ; G09F9/30 ; G02F1/13
摘要：
In a liquid crystal whose molecules have temperature-dependent dielectric anisotropy within a range such that the liquid crystal retains the same phase, the optical properties of a liquid crystal film are controlled by applying an electric field of predetermined frequency to the film and by bringing the temperature of the film to a value within the range mentioned. The dielectric anisotropy then assumes a predetermined value in respect of said frequency and the liquid crystal film assumes a predetermined optical state.