公开(公告)号：US20230092537A1

公开(公告)日：2023-03-23

申请号：US17831330

申请日：2022-06-02

Applicant: Samsung Display Co., Ltd.

Inventor： Jun Young KO ,  Tae Joon KIM ,  Eun Sol SEO ,  Yu Jin SIN ,  Jun Seong LEE ,  Jae Woo CHOI

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

Abstract: A method for inspecting a display device (which includes a pixel electrode and a touch sensor overlapping the pixel electrode) includes: adjusting an impedance value of a variable impedance circuit of an inspection apparatus according to a model of the display device; driving a power source generator of the inspection apparatus; supplying a pixel voltage to the pixel electrode through an output terminal connected to the variable impedance circuit; driving the touch sensor; and detecting a defect related to the pixel electrode based on sensing signals output from the touch sensor.

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.

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：US20170220162A1

公开(公告)日：2017-08-03

申请号：US15352355

申请日：2016-11-15

Applicant: Samsung Display Co., Ltd.

Inventor： Jun Young KO ,  Dong Gun PARK ,  Jin Oh KWAG ,  Young Sik Kim ,  Tae Joon Kim

IPC: G06F3/041 ,  G06F3/045 ,  G06F3/044

Abstract: A display device includes a display panel and a first sensor configured to sense a position of a touch of a user and a second sensor configured to sense a pressure of the touch. The first sensor and the second sensor may be provided inside or surrounding an area of the display panel. The second sensor includes a first conductor, a second conductor spaced apart from the first conductor, and configured to form capacitance with the first conductor, and one or more variable resistance elements connected with the first conductor.

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：US20240264695A1

公开(公告)日：2024-08-08

申请号：US18406481

申请日：2024-01-08

Applicant: Samsung Display Co., Ltd.

Inventor： Jae Woo CHOI ,  Jun Young KO ,  Tae Joon KIM ,  Gyeong Nam BANG ,  Hye Yun HAN

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04164 ,  G06F3/0443 ,  G06F3/0446 ,  G06F2203/04112

Abstract: A touch sensor may include a sensing area and a non-sensing area. The touch sensor may include: a sensor base layer; a first sensing electrode and a second sensing electrode each disposed on the sensor base layer in the sensing area; a first sensing line and a second sensing line each disposed on the sensor base layer, the first sensing line being electrically connected to the first sensing electrode, the second sensing line being electrically connected to the second sensing electrode; and an auxiliary line disposed on the sensor base layer. The second sensing line may include a 2-1-th sensing line disposed in the sensing area, and a 2-2-th sensing line disposed in the non-sensing area. The auxiliary line may overlap the second sensing electrode in a plan view, enclose at least a portion of the 2-1-th sensing line, and be electrically connected to the second sensing electrode.

公开(公告)号：US20230410702A1

公开(公告)日：2023-12-21

申请号：US18239725

申请日：2023-08-29

Applicant: Samsung Display Co., Ltd.

Inventor： Jun Young KO ,  Tae Joon Kim ,  Eun Sol Seo ,  Yu Jin Sin ,  Jun Seong Lee ,  Jae Woo Choi

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

CPC classification number: G09G3/006 ,  G06F3/0412 ,  G09G3/3233 ,  G09G2330/10 ,  G09G2330/021 ,  G06F3/0416 ,  G09G2300/0819 ,  G06F3/0446

Abstract: An apparatus for inspecting a display device including a touch sensor may include: a power source generator configured to generate a pixel voltage of the display device; and a variable impedance circuit electrically connected to an output terminal of the power source generator, wherein the variable impedance circuit may include: a variable resistance circuit electrically connected to the power source generator and an output terminal of the variable impedance circuit, and including resistors connected in parallel with each other; and a variable capacitor circuit electrically connected to the power source generator and a ground voltage source.

公开(公告)号：US20230035999A1

公开(公告)日：2023-02-02

申请号：US17718846

申请日：2022-04-12

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jun Seong LEE ,  Jun Young KO ,  Kee Yong KIM ,  Eun Sol SEO ,  Jung Hun SIN ,  Jae Woo CHOI

IPC: G01R31/28

Abstract: A touch testing apparatus includes: a pogo pad area including input and output test pogo pads respectively connected to input and output test pads disposed in a pad area of a touch detection module; a test touch driver circuit configured to detect compression deviations between the input test pad and the input test pogo pad and between the output test pad and the output test pogo pad, and to correct touch data of the touch detection module based on the detected compression deviations; and a test board on which the test touch driver circuit is mounted, wherein the test board is configured to electrically connect the test touch driver circuit with the input and output test pogo pads.

公开(公告)号：US20180011582A1

公开(公告)日：2018-01-11

申请号：US15643442

申请日：2017-07-06

Applicant: Samsung Display Co., Ltd.

Inventor： Jun Young KO ,  Tae Joon KIM ,  Sang Kook KIM ,  Eung Kwan LEE ,  Hyun Wook CHO ,  Eun Sol SEO

IPC: G06F3/041

Abstract: Disclosed is a touch sensor, including: first sensing patterns extended in a first direction and arranged in a second direction crossing the first direction, in which each of the first sensing patterns includes: first variable resistive patterns arranged in the first direction; and first conductive patterns connecting the first variable resistive patterns, and lengths of the first variable resistive patterns in the first direction are increased in the second direction.