发明名称 |
A.C. DRIVE DEVICE FOR A LIQUID CRYSTAL DISPLAY PANEL |
摘要 |
<p>The present invention relates to an A.C. drive device for a liquid display panel in which liquid crystal layers are interposed between opposing segments across which an A.C. voltage is selectively applied to selectively drive the liquid crystal layers for displaying desired numerals, characters or the like. Clamp circuits are provided to prevent a D.C. voltage component from being applied to the liquid crystal layers when any selected character or numeric is to be displayed. This serves to extend the durability of the liquid crystal.</p> |
申请公布号 |
CA1013872(A) |
申请公布日期 |
1977.07.12 |
申请号 |
CA19740214050 |
申请日期 |
1974.11.19 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
SHIMIZU, KAZUHIKO;SUENAMI, KENICHI |
分类号 |
G02F1/133;G09G3/18 |
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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