Patent ID: 7808458

Claim:
A light emitting display for displaying an image on a display panel having a plurality of scan lines for transmitting selection signals, a plurality of data lines for transmitting data signals, and a plurality of pixel circuits coupled to the scan lines and the data lines, each of the plurality of pixel circuits comprising: a light emitting element having a first electrode and a second electrode, wherein at least one of the data signals transmitted through at least one of the data lines is applied to the second electrode; and a dedicated current detector for detecting a current flowing through the light emitting element of the pixel circuit, the light emitting display comprising: a current estimator for estimating an amount of the current flowing through the light emitting element using the dedicated current detector, and for outputting a detection signal in response to the amount of the current; a controller for outputting a gamma compensation value corresponding to the detection signal; and a data driver for generating a gamma-compensated data signal based on the gamma compensation value and for applying the gamma-compensated data signal to at least one of the data lines, wherein the plurality of pixel circuits comprises: a first pixel circuit coupled to one data line of the plurality of data lines wherein the dedicated current detector of the first pixel circuit is for detecting a first current flowing through the light emitting element of the first pixel circuit, and a second pixel circuit coupled to the one data line wherein the dedicated current detector of the second pixel circuit is for detecting a second current flowing through the light emitting element of the second pixel circuit, and wherein the gamma compensation values of the first and second pixel circuits comprise values corresponding to the first and second currents to correct at least one gamma curve for the light emitting elements of the first and second pixel circuits.