发明名称 |
System for partially erasing thermally written liquid crystal element |
摘要 |
The liquid crystal is written with a laser beam. The laser beam generated by a laser source is applied through an optical control unit such as galvanometer mirrors to the liquid crystal. To erase a part of the data written in the previous time completely, the liquid crystal is irradiated with the laser beam slightly wider than the portion that was thermally written on the liquid crystal in the previous time.
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申请公布号 |
US5268776(A) |
申请公布日期 |
1993.12.07 |
申请号 |
US19930022875 |
申请日期 |
1993.02.25 |
申请人 |
HITACHI, LTD. |
发明人 |
TACHIKAWA, MAKOTO;AZUSAWA, NOBORU;HASHIMOTO, TADAHIKO;IGARI, KUNIYUKI;ISHIKAWA, TORU |
分类号 |
G02F1/133;G09G3/02;(IPC1-7):G02F1/133 |
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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