Patent ID: 11961481
Assignee: LX SEMICON CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 17:
18. A pixel defect detecting method comprising:
providing a data voltage to a pixel through an amplifier connected through a data line with the pixel of a display panel in a first time period;
receiving, by the amplifier, a reference voltage and a voltage of a light emitting diode included in the pixel and outputting a comparison result between the reference voltage and the voltage of the light emitting diode in a second time period; and
identifying a defect of the pixel on the basis of the comparison result between the reference voltage and the voltage of the light emitting diode,
wherein a pixel driving device for detecting the pixel defect includes a first driving circuit and a second driving circuit comprising the amplifier, a first switch connected between the pixel and an output terminal of the amplifier, and a second switch connected to a detection circuit at the output terminal of the amplifier, respectively, and
wherein the second switch of the first driving circuit and the second switch of the second driving circuit are connected to each other and to a detection circuit.