Patent ID: 9230481
Filing Date: 2016-01-05
CPC Classification: G09G

Claim Text:
1. A pixel circuit, comprising: an OLED including an anode, and a cathode connected to a first voltage source; a driving transistor for driving the OLED, the driving transistor including a first node connected to a second voltage source, a second node, and a third node connected to the anode; a first transistor including a first terminal connected to a data driving line, a second terminal connected to a first control signal source, and a third terminal connected to the second node; a second transistor including a first terminal, a second terminal connected to a second control signal source, and a third terminal connected to the anode and the third node; a storage capacitor including a first terminal directly connected to a third voltage source and a second terminal directly connected to the first terminal of the second transistor; and a coupling capacitor including a first terminal directly connected to the first terminal of the second transistor and a second terminal directly connected to the second node; wherein, in a compensating stage, a voltage of the second voltage source is applied to the driving transistor, and the voltages of the second voltage source are switched between two voltage levels in a reset, the compensating, and a programming stages.