Patent ID: 11869447
Assignee: LG DISPLAY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 0:
1. A light emitting display device comprising:
a display panel configured to display an image; and
a data driver comprising a panel driving circuit and a panel sensing circuit, the panel driving circuit including a plurality of data voltage output circuits configured to drive the display panel, and the panel sensing circuit configured to sense the display panel through a reference line,
wherein a first data voltage output circuit from the plurality of data voltage output circuits outputs a pre-charge voltage to the reference line to pre-charge,
wherein the data driver further comprises at least one switch configured to transfer a voltage output from a second data voltage output circuit from the plurality of data voltage output circuits to a data channel corresponding to a first data voltage output circuit from the plurality of data voltage output circuits while the first data voltage output circuit outputs the pre-charge voltage to the reference line, and
wherein the pre-charge voltage charged on the reference line of the display panel is applied to a sensing node of a sub-pixel to be sensed.