发明名称 |
Method for driving liquid crystal display elements |
摘要 |
A method for driving a liquid crystal display element so as to give a simultaneous analogue display of 3 kinds of information. The liquid crystal display element is driven over 1/3-duty periods by applying 4 kinds of voltage waveforms to one electrode formed on one of paired substrates, and at least 5 kinds of voltage waveforms to the other electrode on the other substrate, said electrodes being divided into a multiplicity of electrode patterns. In particular, one of the 4 kinds of voltage waveforms applied to the electrodes of one of said substrates is set to provide an OFF condition for the display regardless of which of the at least 5 voltage waveforms is applied to the electrodes of said other substrate. In this driving method only one chip of the element driving LSI is sufficient for a simultaneous analogue display of 3 kinds of information e.g. hour, minute, and second.
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申请公布号 |
US4364672(A) |
申请公布日期 |
1982.12.21 |
申请号 |
US19800138977 |
申请日期 |
1980.04.10 |
申请人 |
HITACHI, LTD. |
发明人 |
SHIBUYA, YOSHIMICHI;TAKAHASHI, MASAMI;ISHIBASHI, TADASHI |
分类号 |
G09G3/18;G01R13/40;G02F1/133;G04G9/00;G04G9/02;G04G9/06;G04G15/00;(IPC1-7):G09F9/00 |
主分类号 |
G09G3/18 |
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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