Patent ID: 7400309
Filing Date: 2008-07-15
Classification: G09G

Abstract:
1. A pixel comprising: a light-emitting element; a driving transistor serially connected to the light-emitting element for driving the light-emitting element to emit light, wherein the driving transistor has a threshold voltage and a gate coupled to a point; a maintain capacitor having a first terminal coupled to the point and a second terminal; a switch device coupled between a data line and the point and turned on according to a scan signal; and a controller coupled to the second terminal of the maintain capacitor and providing a first control voltage, determined by the threshold voltage, to the second terminal, wherein the controller comprises: wherein the controller provides the first control voltage to the second terminal of the maintain capacitor when the switch device is turned on, the controller provides a second control voltage to the second terminal of the maintain capacitor when the switch device is turned off, and the second control voltage is not determined by the threshold voltage.