发明名称 |
VOLTAGE GENERATING CIRCUIT |
摘要 |
The power consumption must be reduced in liquid crystal display devices. A drive voltage generating circuit (201) comprises a clock signal frequency-divider circuit (204) that performs, with respect to clock signals, such a signal processing that does not divide the frequency of externally inputted clock signals (SG22) during a display interval (T13) in which to perform a basic display for normally displaying radio wave reception condition of a mobile telephone and the like on a liquid crystal display panel but does divide that frequency, based on a predetermined criterion, during intervals other than the display interval (T13); and a booster circuit (202,203) uses the clock signals (SG13), the frequency of which has been divided by the clock signal frequency-divider circuit (204), to generate a predetermined voltage for performing that basic display.
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申请公布号 |
KR20050034637(A) |
申请公布日期 |
2005.04.14 |
申请号 |
KR20047010727 |
申请日期 |
2004.07.09 |
申请人 |
TOSHIBA MATSUSHITA DISPLAY TECHNOLOGY CO., LTD. |
发明人 |
AOTA, SHINICHI;MINE, HIDEKI;TSUKADA, TAKASHI |
分类号 |
G09G3/20;G09G3/36;G09G5/00;(IPC1-7):G02F1/133 |
主分类号 |
G09G3/20 |
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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