| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid crystal drive voltage generation circuit whose circuit scale can be reduced significantly. SOLUTION: The output voltage V4 of a booster circuit 1, the output voltage V1 of a buffer circuit BF1, the output voltage V0 of a buffer circuit BF2, and ground GND are used. Output terminals 2 to 6 are provided, a capacitor C2 is connected between output terminals 3 and 4, and a capacitor C3 is connected between output terminals 4 and 5. In a certain frame, the voltage V4 is connected to the output terminal 2, the voltage V1 is connected to the output terminal 3, the voltage V0 is connected to the output terminal 4, and the output terminal 5 is connected to the ground GND. In the next frame, the voltage V4 is connected to the output terminal 3, and the output terminal 6 is connected to the ground GND without connecting the voltages V1 and V0 to anywhere. COPYRIGHT: (C)2007,JPO&INPIT
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