Patent ID: 7295195

Claim:
A semiconductor integrated circuit that accommodates image data in a plurality of kinds of unit bit lengths and supplies a plurality of display signals to a plurality of corresponding respective electrodes of an image display device based on image data, the semiconductor integrated circuit, comprising: a counter that counts a clock signal and outputs count values; a comparison data generation circuit that outputs a plurality of kinds of comparison data for each of the plurality of kinds of unit bit lengths of image data based on the count values outputted from the counter; a comparison circuit that compares image data in a unit bit length and the comparison data that are sequentially output from the comparison data generation circuit; and a pulse output circuit that determines pulse widths of the plurality of display signals to be supplied to the plurality of corresponding respective electrodes based on a comparison result obtained by the comparison circuit and outputs the display signals, the comparison data generation circuit outputting comparison data having a bit length that is identical with a maximum unit bit length of the image data.