Display driver, electro-optical device, and method of setting display driver parameters

Abstract

A display driver includes a correction parameter register which stores correction parameters for correcting contrast adjustment values; a computation circuit which adds a correction value specified by a correction parameter to a contrast adjustment value instructed by an MPU, to calculate a corrected contrast adjustment value; and a drive circuit which drives a display panel with a drive voltage that is obtained based on the corrected contrast adjustment value. The display driver uses a correction value for a contrast reference value that is obtained by measuring a display characteristic of the display panel. At power-on, at a system reset, or at refresh timing, a correction parameter that has been read from the EEPROM is written to the correction parameter register, to initialize or refresh the register.

Dependencies are inferred from the claim text.