发明名称 |
Liquid crystal device having two super twisted nematic cells |
摘要 |
An electro-optical device includes at least two adjacent transparent twisted nematic liquid crystal cells, each cell having a twisted nematic liquid crystal with a twist angle greater than 90 DEG between a pair of spaced apart opposed substrates with electrodes selectively disposed thereon. A linear polarizer is disposed on an exterior surface of each of the two cells. One of the two cells includes a plurality of electrodes for selectively producing a desired display. Application of a suitable voltage to the second cell compensates for changes in ambient temperature conditions or undesirable thicknesses in the liquid crystal materials of the two cells to ensure that a monochromatic display having excellent contrast is produced by the device and compensates for elliptically polarized light emitted by the first cell so that the device produces substantially linearly polarized light.
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申请公布号 |
US5035489(A) |
申请公布日期 |
1991.07.30 |
申请号 |
US19890343987 |
申请日期 |
1989.04.27 |
申请人 |
SEIKO EPSON CORPORATION |
发明人 |
IIJIMA, CHIYOAKI;SATO, YUZURU;WADA, HIROSHI;OKUMURA, OSAMU;KAMADA, SATOSHI |
分类号 |
G02F1/133;G02F1/13363;G02F1/1347;G02F1/139 |
主分类号 |
G02F1/133 |
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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