公开(公告)号：US20200012375A1

公开(公告)日：2020-01-09

申请号：US16503741

申请日：2019-07-05

Applicant: Samsung Display CO., LTD.

Inventor： Deog-Kyoon Jeong ,  Youngmin Park ,  Sangjine Park ,  Jiheon Park ,  Jonghyun Oh ,  Sanghune Park

IPC: G06F3/041

Abstract: A display apparatus includes a display panel, a touch sensing unit, and a touch driving circuit. The touch sensing unit includes a transmission touch line. The touch driving circuit provides a touch driving signal to the transmission touch line. The touch driving circuit may include a switch group and a control switch group. The switch group may include a plurality of switch devices, each of which has one end connected to the transmission touch line. The control switch group may be connected to the other end of at least a portion of the switch devices, include a plurality of control switch devices and a capacitor device, and receive a driving voltage and a ground voltage. The touch driving signal has N voltage levels, where N is a natural number of 3 or more.