发明名称 |
REFERENCE VOLTAGE GENERATION CIRCUIT, DISPLAY DRIVE CIRCUIT, DISPLAY DEVICE AND REFERENCE VOLTAGE GENERATION METHOD |
摘要 |
There are provided a reference voltage generation circuit, a display drive circuit, a display device and a reference voltage generation method capable of reducing consumption of current even when the polarity inversion drive is carried out. A reference voltage generation circuit includes a positive polarity ladder resistor circuit including a first ladder resistor circuit having resistance ratio for a positive polarity and a negative polarity ladder resistor circuit including a second ladder resistor circuit having resistance ratio for a negative polarity. First to 2i-th reference voltage output switching circuits are respectively inserted between first to i-th and (i + 1)th to 2i-th division nodes and first to i-th reference voltage output nodes. The positive polarity ladder resistor circuit generates a reference voltage at a positive polarity inversion period and the negative polarity ladder resistor circuit generates a reference voltage at a negative polarity inversion period. <IMAGE> |
申请公布号 |
KR100524443(B1) |
申请公布日期 |
2005.10.27 |
申请号 |
KR20030007732 |
申请日期 |
2003.02.07 |
申请人 |
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发明人 |
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分类号 |
G09G3/36;(IPC1-7):G09G3/36 |
主分类号 |
G09G3/36 |
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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