Patent ID: 7893897

Claim:
A data driving circuit for driving a pixel of a light emitting display based on externally supplied first data for the pixel, wherein the pixel is electrically connectable to the driving circuit via a data line, the data driving circuit comprising: a gamma voltage unit generating a plurality of gray scale voltages; a digital-analog converter selecting, as a data signal, one of the plurality of gray scale voltages using k bits of the first data, k being a natural number; a decoder generating p bits of second data using the k bits of the first data, p being a natural number; a current sink receiving a predetermined current from the pixel during a first partial period of a complete period for driving the pixel based on the selected gray scale voltage; a voltage controller controlling a voltage value of the data signal using the second data and a compensation voltage generated based on the predetermined current received by the current sink, the compensation voltage being supplied from the current sink to the voltage controller; and a switching unit supplying the data signal, with the controlled voltage value, to the pixel, the switching unit supplying the data signal during any partial period of the complete period elapsing after the first partial period of the complete period.