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.

公开(公告)号：US20210264860A1

公开(公告)日：2021-08-26

申请号：US17026639

申请日：2020-09-21

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jeeyeon EOM ,  Soonchan KWON ,  Kyungjik MIN ,  Yeongshin JANG ,  Jeonghoon CHOI ,  Siwoo KIM ,  Jaeyoun LEE

IPC: G09G3/3275 ,  G09G3/3258

Abstract: A display driving integrated circuit includes a timing controller, a first source driver including a first inverting input, a first non-inverting input, and a first output, a second source driver including a second inverting input, a second non-inverting input, and a second output, and a switching circuit connected with the display panel through a first and second pads. Under control of the timing controller, the switching circuit performs one of a first switching operation of connecting the first inverting input and the first output with the first pad, connecting the second inverting input and the second output with the second pad, and applying first and second decoding voltages to the non-inverting inputs, respectively; and a second switching operation of applying a sensing reference voltage to the non-inverting inputs, and connecting the output terminals with an output node, and connecting the inverting inputs with one pad.