Patent ID: 9576530
Date: 2017-02-21
CPC Classifications: G09G

Claim:
1. An optoelectronic device comprising: a first transistor electrically connected between a power supply and an electrode of at least one light-emitting element, the first transistor having a gate to receive a gray scale voltage, and to supply the at least one light-emitting element with a driving current corresponding to the gray scale voltage; a second transistor having a gate electrically connected to the electrode of the at least one light-emitting element and a source or drain electrically connected to a circuit including a voltmeter; and a control circuit to read a measurement value of the voltmeter when the gate of the first transistor receives the gray scale voltage, and to correct a next gray scale voltage applied to the gate of the first transistor based on the measurement value, wherein the control circuit: reads a measurement value of the voltmeter as a first measurement value when a reference voltage is applied to the electrode of the at least one light-emitting element, reads a measurement value of the voltmeter as a second measurement value when the gate of the first transistor receives the gray scale voltage, and corrects the next gray scale voltage to be applied to the gate of the first transistor based on a difference between the first measurement value and the second measurement value.