公开(公告)号：US20240404440A1

公开(公告)日：2024-12-05

申请号：US18804628

申请日：2024-08-14

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Tae Hyeon YANG ,  Jun Young KO ,  Han Su CHO ,  Tae Joon KIM ,  Jae Woo CHOI

IPC: G09G3/00 ,  G06F3/041 ,  G06F3/044 ,  G09G3/3233

Abstract: A display device includes a touch panel and a display panel. The touch panel outputs touch sensing signals. At least one of a plurality of touch sensing signals is converted from a time domain to a frequency domain, and then information on a thickness of a common electrode is detected based on a peak of the converted touch sensing signal. As a result, it is possible to inspect whether the common electrode is formed with a uniform thickness without destroying the display device.

公开(公告)号：US20240143114A1

公开(公告)日：2024-05-02

申请号：US18341729

申请日：2023-06-26

Applicant: Samsung Display Co., LTD.

Inventor： Jun Young KO ,  Tae Hyeon YANG ,  Han Su CHO ,  Tae Joon KIM ,  Hyun Wook CHO ,  Jae Woo CHOI

IPC: G06F3/041 ,  G09G3/3275

CPC classification number: G06F3/04184 ,  G06F3/04164 ,  G09G3/3275 ,  G09G2310/08 ,  G09G2354/00

Abstract: A driving circuit includes: a display driver to generate a horizontal synchronization signal and a vertical synchronization signal according to a first clock signal of a first oscillator; a sensor driver to generate a touch signal according to a second clock signal of a second oscillator; and a determination circuit to detect a cycle of at least one of the horizontal synchronization signal or the vertical synchronization signal according to the second clock signal, and output a detection signal when the cycle is out of a range. The determination circuit is a part of the display driver or the sensor driver.

公开(公告)号：US20240296763A1

公开(公告)日：2024-09-05

申请号：US18469768

申请日：2023-09-19

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Tae Hyeon YANG ,  Jun Young KO ,  Han Su CHO ,  Tae Joon KIM ,  Jae Woo CHOI

IPC: G09G3/00 ,  G06F3/041 ,  G06F3/044 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G06F3/0412 ,  G06F3/04166 ,  G06F3/0418 ,  G06F3/0446 ,  G09G3/3233 ,  G09G2300/0842 ,  G09G2330/12

Abstract: A display device includes a touch panel and a display panel. The touch panel outputs touch sensing signals. At least one of a plurality of touch sensing signals is converted from a time domain to a frequency domain, and then information on a thickness of a common electrode is detected based on a peak of the converted touch sensing signal. As a result, it is possible to inspect whether the common electrode is formed with a uniform thickness without destroying the display device.