Patent ID: 7675493
Filing Date: 2010-03-09
Classification: G09G

Abstract:
1. An organic light emitting diode drive circuit, comprising: an organic light emitting diode that emits light with a current; a first transistor supplying a data voltage to a first node in response to a scan pulse; a second transistor controlling the current flowing in the organic light emitting diode in response to the data voltage supplied to the first node; and a third transistor discharging the data voltage at the first node in response to a reset pulse for compensating a stress of the second transistor, wherein the third transistor is configured to be turned on subsequent to the first transistor and the first transistor is turned off when the third transistor is turned on, wherein a negative stress voltage lower than a low potential reference voltage of the data voltage is supplied to a source terminal of the third transistor and the negative stress voltage is equal with low potential voltages of the scan pulse and the reset pulse.