Patent ID: 8174517

Claim:
An integrated circuit device comprising: a plurality of data line driving circuits that drive a plurality of data voltage supply lines; a comparator that compares a data voltage corresponding to a data line driving circuit to be corrected among the plurality of data line driving circuits with a comparator reference voltage; a correction data calculation section that calculates correction data for correcting a difference in the data voltage based on a comparison result given from the comparator; and a plurality of correction circuits that each correct image data based on the correction data given from the correction data calculation section, and output the image data after correction processing to a corresponding data line driving circuit among the plurality of data line driving circuits, wherein in a correction data calculation mode, the correction data calculation section sequentially changes and outputs measurement data to the data line driving circuit to be corrected, the data line driving circuit to be corrected outputs a data voltage corresponding to the measurement data, the comparator compares the data voltage corresponding to the measurement data with a comparator reference voltage, and the correction data calculation section calculates the correction data based on a comparison result given from the comparator; and in a normal operation mode, the correction circuit corrects image data based on the correction data, and outputs the image data that has been corrected to a corresponding data line driving circuit among the plurality of data line driving circuits.