Patent ID: 8884995

Claim:
A system for compensating for gamma data, comprising: a display panel including a plurality of pixels, a plurality of data lines and a plurality of gate lines connected to the plurality of pixels, and at least one feedback line connected to at least one pixel of the plurality of pixels; a gray voltage generator generating a reference gray voltage based on first gamma data; a data driver generating a data voltage based on the reference gray voltage and applying the generated data voltage to a data line of the plurality of data lines; a multiplexer receiving at least one feedback voltage from the at least one feedback line, selecting a feedback voltage from the received at least one feedback voltage, and outputting the selected feedback voltage; an A/D converter converting the feedback voltage selected by the multiplexer into feedback data; and a signal controller storing the feedback data as feedback gamma data for the entire grays and compensating for the first gamma data based on the feedback gamma data, wherein the signal controller comprises: a lookup table storing the feedback gamma data; and a comparison processor comparing the feedback gamma data with target gamma data and compensating for the first gamma data when the feedback gamma data departs from a dispersion range, and wherein when the feedback gamma data is within the dispersion range, the signal controller stores the first gamma data as final gamma data in the lookup table.