| 摘要 |
To reduce a block ghost in phase expansion driving in which image signals are sampled on a plurality of data lines divided into groups. In a phase expansion driving method, correction data Db is calculated by more largely weighting the average value of a gray-scale level changed from the block in the previous stage of a target block when the target block is selected than the average value of a gray-scale level changed from the block in two previous stages of the target block when the previous block is selected and by adding the average values. Then, the correction data Db is added to image data Vd1d to Vd6d of the pixels belonging to the target block, respectively, to obtain the corrected image data Vd1e to Vd6e. Subsequently, the corrected image data are converted into analog data, and their polarities are inverted to supply to image signal lines of an electro-optical panel.
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