发明名称 |
Colored ball display system |
摘要 |
<p>In a display device of the type wherein a display state is selected by rotation of polarized colored balls, the colored balls are formed from a paraelectric material, and the charged state of each colored ball is provided by an electret-forming treatment due to charge-injection to a minute colored ball per se of a paraelectric material or a film of a paraelectric material coating a minute ball. As a result, a colored ball having an increased charge can be produced stably from an inexpensive material. <IMAGE></p> |
申请公布号 |
EP0935230(A2) |
申请公布日期 |
1999.08.11 |
申请号 |
EP19990300872 |
申请日期 |
1999.02.05 |
申请人 |
CANON KABUSHIKI KAISHA |
发明人 |
KISHI, ETSURO;YAGI, TAKAYUKI;IKEDA, TSUTOMU |
分类号 |
G02B26/02;G09F9/37;(IPC1-7):G09F9/37 |
主分类号 |
G02B26/02 |
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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