公开(公告)号：US20250077026A1

公开(公告)日：2025-03-06

申请号：US18460698

申请日：2023-09-05

Applicant: Novatek Microelectronics Corp.

Inventor： Kai-Chun Huang

IPC: G06F3/041 ,  G09G3/20

Abstract: A driver circuit configured to drive a display panel to perform a display function and a touch function is provided. The driver circuit includes a plurality of pads and a switch circuit. The plurality of pads are coupled to the display panel and grouped into several pad groups. A synchronization driving signal is applied to the pad groups in a touch sensing phase, and the synchronization driving signal has a first level. The switch circuit is coupled to the pads. The switch circuit is configured to receive a common signal and a system voltage signal, and output the common signal and the system voltage signal to the pad groups in a time division manner. The common signal has a second level, and the system voltage signal has a third level. Voltage levels of the pad groups are changed from the second level to the first level in different times, and the second level is smaller than the first level.