发明名称 |
Liquid Crystal Display device using liquid crystal having ferrielectric phase between substrates and method for driving the same |
摘要 |
A liquid crystal layer is sealed between a pair of substrates on which opposite electrodes are formed. The liquid crystal layer is formed of a liquid crystal which exhibits an antiferroelectric phase while the liquid crystal is in a bulk state. When the liquid crystal is sealed between the substrates as the liquid crystal layer, the liquid crystal exhibits a ferrielectric phase wherein liquid crystal molecules aligned in a first state of being aligned in a first direction and liquid crystal molecules aligned in a second state of being aligned in a second direction are present in predetermined order. In accordance with the polarity and magnitude of a voltage applied between the opposite electrodes, the ratio of the number of liquid crystal molecules aligned in the first state to the number of liquid crystal molecules aligned in the second state varies such that the direction of the director of the liquid crystal layer varies continuously. Gradation display can be achieved by detecting a variation in the director through the use of a pair of polarization plates arranged in a crossed Nicols fashion.
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申请公布号 |
US6091478(A) |
申请公布日期 |
2000.07.18 |
申请号 |
US19980073633 |
申请日期 |
1998.05.06 |
申请人 |
CASIO COMPUTER CO., LTD. |
发明人 |
TANAKA, TOMIO;YOSHIDA, TETSUSHI;TAKEI, MANABU;OGURA, JUN |
分类号 |
G02F1/136;G02F1/133;G02F1/1368;G02F1/141;G09F9/35;G09G3/36;(IPC1-7):C09K19/02 |
主分类号 |
G02F1/136 |
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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