A display driver includes a processing circuit to which information regarding a temperature range is input and that performs gamma conversion processing on display data with respect to gray level. In the gamma conversion processing, at a first set point, a first output gray level is gray level m when the temperature range is a first temperature range, and is gray level n (m and n are integers of zero or more and are different to each other) when the temperature range is a second temperature range, and the processing circuit changes, when the temperature range has transitioned from the first temperature range to the second temperature range, the first output gray level from gray level m to gray level n by a step smaller than |n−m|.