Patent ID: 7812791

Claim:
An electron emission display, comprising: a pixel portion adapted to receive a data signal and a scan signal, and to display an image; a data driver adapted to generate the data signal using video data and to transfer the data signal to the pixel portion; a scan driver adapted to transfer the scan signal to the pixel portion; a timing controller adapted to transfer a drive signal to the data driver and the scan driver, the drive signal adapted to drive the data driver and the scan driver; a data processor adapted to generate a control signal corresponding to frame data obtained by summing a value of video data inputted during one frame; and a power supply section adapted to generate a drive voltage and to transfer the drive voltage to the pixel portion, the data driver, the scan driver, the timing controller, and the data processor; wherein a brightness of the pixel portion is changed according to the control signal, an amount of change of the brightness being according to a hysteresis curve, the hysteresis curve comprising a first graph and a second graph, the amount of the change of the brightness being determined in accordance with the first graph when a value of the frame data is increasing, and the amount of the change of the brightness being determined in accordance with the second graph when the value of the frame data is decreasing, wherein the data processor comprises: a data summer adapted to sum the value of video data inputted during one frame to generate the frame data; a first look-up table selected when the brightness is increased and adapted to store an output voltage of the power supply section corresponding to the frame data; a second look-up table selected when the brightness is reduced and adapted to store an output voltage of the power supply section corresponding to the frame data; and a signal processor adapted to detect a value change of the frame data, to select one of the first and second look-up tables according to the value change of the frame data, to generate the control signal corresponding to the output voltage of the power supply section stored in the first or second look-up table, and to control the drive voltage from the power supply section with the control signal.