Patent ID: 6121943
Filing Date: 2000-09-19
Classification: G09G

Abstract:
An EL display comprising:an EL display panel having a plurality of scan electrodes on a first side of an EL light-emitting layer, a plurality of data electrodes on a second side thereof, and EL elements in positions where the scan electrodes and the data electrodes intersect each other;a scan electrode driving circuit for sequentially applying a scan signal having different polarities in each of positive and negative fields to the plurality of scan electrodes; anda data electrode driving circuit for applying a data signal to the plurality of data electrodes;wherein the scan signal and the data signal cause the plurality of EL elements to selectively emit light;the scan electrode driving circuit is for applying the scan signal to the scan electrodes by supplying charge and discharge currents to the scan electrodes to charge and discharge the EL elements;the scan electrode driving circuit includes constant current control circuits for controlling the charge and discharge currents to apply constant currents to the scan electrodes; andwherein the constant current control circuits are positioned separate from the scan electrode driving circuit whereby heat generated by the constant current control circuits is not readily conducted to the scan electrode driving circuit.