Patent ID: 7924245
Filing Date: 2011-04-12
Classification: G09G

Abstract:
1. An electro-luminescence display device, comprising: gate lines; data lines crossing the gate lines; pixel cells at crossings of the gate lines and the data lines; a gate driver that sequentially applies a gate signal to the gate lines during one horizontal period; a gamma driver that generates a plurality of gamma voltage signals corresponding to image data and a plurality of gamma current signals corresponding to the image data; and a plurality of data driving circuits that apply the plurality of gamma voltage signals to the pixel cells along the data lines during a first time within the horizontal period and applying current signals corresponding the plurality of gamma current signals to the pixel cells along the data lines during a second time within the horizontal period after the first time of the horizontal period, wherein each of the plurality of data driving circuits includes a voltage driver, wherein the voltage driver includes: a voltage driving block configured to apply the gamma voltage signal, and a first switch connected between the voltage driving block and a corresponding data line and turned on by the first level of a control signal during the first time of the horizontal period to pre-charge the gamma voltage signal onto storage capacitors in the pixel cells via the corresponding data line, and wherein the current driver includes: a current driving block configured to apply a gamma current signal, and a second switch connected between the current driving block and the corresponding data line, and turned on by the second level of the control signal during the second time of the horizontal period to apply the gamma current signal to the storage capacitors in the pixel cells via the corresponding data line.