Patent ID: 7777697

Claim:
An electron emission display, comprising: a pixel portion adapted to receive a data signal and a scan signal, the pixel portion being further adapted to display an image; a data driver adapted to generate the data signal using video data, the data driver being further adapted 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 to the scan driver, the drive signal driving the data driver and the scan driver; a data processor adapted to generate a control signal corresponding to a size of frame data obtained by summing video data input 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 the drive voltage is controlled by the control signal, and a brightness of the pixel portion is varied according to the drive voltage controlled by the control signal, and the brightness is varied by an amount which is determined based upon a size of the frame data obtained by the summing of the video data during the one frame; wherein the data processor comprises a signal processor adapted to generate the control signal in correspondence to a desired output voltage of the power supply section, the signal processor being further adapted to control the drive voltage from the power supply section with the control signal in order to adjust the brightness.