| 摘要 |
PROBLEM TO BE SOLVED: To provide a counter electrode voltage generation circuit for driving a counter electrode on low electric power consumption, a power source circuit, an electrooptical apparatus, and an electronic equipment. SOLUTION: The counter electrode voltage generation circuit 56 includes a first operational amplifier OP1 for outputting a high potential side voltage VCOMH of a counter electrode voltage VCOM, a second operational amplifier OP2 for outputting a low potential side voltage VCOML of the counter electrode voltage VCOM, and a switching circuit SEL outputting one of the high potential side voltage VCOMH and the low potential side voltage VCOML as the counter electrode voltage VCOM according to the polarity inversion timing to invert the polarity of the voltage applied to an electrooptical substance. In outputting the high potential side voltage VCOMH, the control to stop or limit the operating current of the second operational amplifier OP2 is performed and in outputting the low potential side voltage VCOML, the control to stop or limit the operating current of the first operational amplifier OP1 is performed. COPYRIGHT: (C)2007,JPO&INPIT
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