公开(公告)号：US20200168163A1

公开(公告)日：2020-05-28

申请号：US16587843

申请日：2019-09-30

Applicant: LG Display Co., Ltd.

Inventor： Taewook KIM ,  Jungyoon YI ,  Byungjae LEE

IPC: G09G3/3291 ,  G09G3/3233

Abstract: Data drivers and organic light emitting display devices having data drivers are provided in which a number of amplifiers for driving a display panel is reduced. A data driver includes an analog-to-digital converter, first and second amplifier circuits, a first switch coupled to an output of the first amplifier circuit, and a second switch and a third switch coupled to an output of the second amplifier circuit. The first switch is configured to selectively couple the output of the first amplifier circuit to a first data line and to second data line of a display panel. The second switch is configured to selectively couple the output of the second amplifier circuit to the second data line and to the analog-to-digital converter. The third switch is configured to selectively couple the output of the second amplifier circuit to a sensing line of the display panel.