Patent ID: 7893898

Claim:
A data driving circuit, comprising: a decoder for generating second data having p bits using externally supplied first data having k bits; a latch unit for storing the first data and the second data; a gamma voltage unit for generating a plurality of gray scale voltages; a digital-to-analog converter for selecting one gray scale voltage among the plurality of gray scale voltages as a data signal based on the first data; a current sink unit receiving a predetermined current from a pixel during a first partial period of a complete period for driving the pixel based on the selected gray scale voltage; a voltage controller for controlling a voltage value of the data signal based on a compensation voltage generated based on the predetermined current received by the current sink unit and the second data, the compensation voltage being supplied from the current sink unit to the voltage controller; and a switching unit for supplying the controlled data signal to the pixel during a second partial period of the one complete period, the second partial period being different from the first partial period and the second partial period elapsing after the first partial period.