| 摘要 |
PROBLEM TO BE SOLVED: To provide a display driving device capable of reducing the offset effect of a gradation amplifier, and to provide a display device comprising such a display driving device. SOLUTION: The polarity of voltage input to gamma amplifiers 232a, 232b is inverted every predetermined period by inversion switches SWa, SWb of an inversion switching part 231. AC driving is thereby performed, and the same gradation amplifier is used for display data before and after polarity inversion. Consequently, even if the gradation amplifier is offset, its effect is canceled before and after the polarity inversion. COPYRIGHT: (C)2009,JPO&INPIT
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