Power source circuit, display driver, and display device

摘要

A power source circuit includes a first regulator which outputs a first power source voltage based on a reference voltage Vref and a second regulator which outputs a power source voltage of an operation circuit of a drive circuit that drives a display panel based on the reference voltage. The first regulator outputs the first power source voltage to the drive circuit as a generating voltage for generating a drive voltage of the drive circuit. The second regulator outputs the power source voltage to the operation circuit which is coupled to a first power source line and an output of the second regulator and which forms a current path between the first power source line and the output of the second regulator during a given operation period.