Patent ID: 11900843
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 7:
8. A display driving method for driving a display device including a display panel in which a plurality of subpixels with a light emitting element that emits light by a subpixel driving voltage supplied to a driving voltage line and a plurality of reference voltage lines connected to the plurality of subpixels to detect a characteristic value are disposed, comprising:
maintaining a subpixel driving voltage node at a level lower than a display driving reference voltage;
floating a base voltage node;
supplying a display driving reference voltage lower than the subpixel driving voltage, to a driving voltage line through a reference voltage line during a period in which the subpixel driving voltage is not supplied or has a level lower than the display driving reference voltage;
detecting a current between the base voltage node and a ground;
comparing a detected current with a reference value; and
generating a defect detection signal according to a result of comparing the detected current with the reference value.