| 摘要 |
PROBLEM TO BE SOLVED: To make it possible to decrease power consumption at the time of generating pixel data pulses by arranging a pixel pulse generating circuit for generating pixel data pulses by connecting a power source line with column electrodes only for a prescribed period according to a video signal. SOLUTION: The column electrode driving circuit 20 is comprised of a power source circuit 21 and a pixel pulse generating circuit 22. The power source circuit 21 comprises a 3rd switching current path for charging a capacitor C1 and a 4th switching current path for selectively grounding a power source line 2 for a prescribed period, etc. And, the pixel data pulse generating circuit 22 generates pixel data pulses on column electrodes by connecting the power source line 2 with the column electrodes only for a prescribed period according to a video signal. According to this configuration, wasteful charge-discharge operation as well as an excessive current flow into the driving device side from a display panel are suppressed, and the power consumption is decreased.
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