Patent ID: 6369516
Filing Date: 2002-04-09
Classification: G09G

Abstract:
A driving device of an organic thin film EL display which comprises display elements composed of organic thin film EL light-emitting elements connected to respective intersections of data electrodes and scanning electrodes arrayed in a matrix, wherein while the scanning electrode is scanned at predetermined periods, the display element emits light in response to a signal applied to the data electrode in synchronization with this scanning; said driving device comprising;a comparator configured to compare a signal voltage applied to the display element on a predetermined data electrode and on the scanning electrode for the current display period and a signal voltage applied to the display element on this data electrode and on the scanning electrode for the next display period; and a controller coupled to said comparator and configured to selectively control a discharge of residual electric charges from the data electrode and on the currently displaying scanning electrode during a blanking period immediately before the next display period depending on the comparison result by the comparator.