Patent ID: 6504520
Filing Date: 2003-01-07
Classification: G09G

Abstract:
An electroluminescent display device comprising:a display panel having a plurality of scanning electrodes, a plurality of data electrodes and an electroluminescent layer interposed between both electrodes, both of the scanning and data electrodes forming a matrix; means for driving the scanning electrodes by applying a scanning voltage thereto, the means including a first scanning electrode driver connected to one side of the scanning electrodes and a second scanning electrode driver connected to the other side of the scanning electrodes; and means for driving the data electrodes by applying a data voltage thereto; wherein: the scanning electrodes are transparent electrodes; the scanning voltage is applied to the transparent scanning electrodes by sequentially scanning the transparent scanning electrodes from one of the first scanning electrode driver and the second scanning electrode driver while maintaining the other of the first scanning electrode driver and the second scanning electrode driver inoperative; the scanning electrodes are scanned by repeating a series of fields consisting of a first field, a second field, a third field, and a fourth field; a positive scanning voltage is sequentially applied to the scanning electrodes from the first scanning electrode driver in the first field, while maintaining the second scanning electrode driver inoperative by increasing its impedance to a higher level; a negative scanning voltage is sequentially applied to the scanning electrodes from the first scanning electrode driver in the second field, while maintaining the second scanning electrode driver inoperative by increasing its impedance to a higher level; a positive scanning voltage is sequentially applied to the scanning electrodes from the second scanning electrode driver in the third field, while maintaining the first scanning electrode driver inoperative by increasing its impedance to a higher level; and a negative scanning voltage is sequentially applied to the scanning electrodes from the second scanning electrode driver in the fourth field, while maintaining the first scanning electrode driver inoperative by increasing its impedance to a higher level.