公开(公告)号：US20240069673A1

公开(公告)日：2024-02-29

申请号：US18350578

申请日：2023-07-11

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Choonghoon LEE ,  Minsung KIM ,  Kyungjik MIN ,  Seunghoon BAEK ,  Kyeonggon LEE

IPC: G06F3/041

CPC classification number: G06F3/0418 ,  G06F3/04166 ,  G06F3/0446

Abstract: A touch controller, a touch screen device, and an operating method of the touch controller are provided. A touch controller, performing a touch sensing operation of sensing a touch of a touch panel in a touch sensing period, includes a first clock generator configured to generate a low frequency clock signal for calculating the touch sensing period, a second clock generator configured to generate a high frequency clock signal for performing the touch sensing operation, and a first calibration circuit configured to calibrate a frequency of the low frequency clock signal by using the high frequency clock signal.