Patent ID: 11922839
Assignee: SAMSUNG ELECTRONICS CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 14:
15. A method of driving a display device, the method comprising:
a voltage sensing operation of sensing a voltage applied to a plurality of light emitting diodes included in a pixel;
a defective light emitting diode detection operation of detecting whether a shorted defective light emitting diode exists in the pixel based on the voltage and a reference voltage; and
a current compensation value calculation operation of calculating a current compensation value for the pixel and increasing the current compensation value as the voltage decreases, when the defective light emitting diode is detected,
wherein the pixel comprises:
a first transistor including a gate electrode connected to a first node, a first electrode connected to first power, and a second electrode connected to a second node;
a first light emitting diode including an anode connected to the second node, and a cathode;
a second light emitting diode including an anode connected to the cathode of the first light emitting diode in series, and a cathode connected to second power;
a second transistor including a gate electrode connected to a first scan line, a first electrode connected to a data line, and a second electrode connected to the first node; and
a third transistor including a gate electrode connected to a second scan line, a first electrode connected to the second node, and a second electrode connected to a respective one of the sensing lines, and

wherein the voltage sensing operation senses a voltage of the second node.