Source driver reducing test time by simultaneously performing test on the source driver and display driver integrated circuit including the same

Abstract

A display driving integrated circuit includes: a gamma voltage generator outputs a plurality of gamma voltages at a first voltage level based on a first control signal in a first time period among a plurality of time periods, outputs a plurality of gamma voltages at a second voltage level based on a second control signal in a second time period among the plurality of time periods, and outputs a reference voltage that swings between a third voltage level lower than the first voltage level and a fourth voltage level higher than the second voltage level in the plurality of time periods; and a source block circuit receives input data in response to a first clock signal in the first time period, selects a first gamma voltage among the plurality of gamma voltages of the first voltage level based on the input data, and compares the first gamma voltage and the reference voltage.