| 发明名称 |
First surface fresnel reflector for liquid crystal display. |
| 摘要 |
<p>A liquid crystal display assembly (10, 18, 22) for use with a reflective type overhead projector (28) includes a liquid crystal display (10). The liquid crystal display includes a Fresnel reflector with variable width grooves (24) which reduce double imaging which usually occurs with reflective type overhead projectors (28). <IMAGE></p> |
| 申请公布号 |
EP0646831(A1) |
申请公布日期 |
1995.04.05 |
| 申请号 |
EP19940118153 |
申请日期 |
1989.09.11 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
VANDERWERF, DENNIS F., MINNESOTA MINING AND |
| 分类号 |
G02F1/13;G02F1/1335;G03B21/132;G09F9/00;(IPC1-7):G02F1/133 |
主分类号 |
G02F1/13 |
| 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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