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：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：US20220171483A1

公开(公告)日：2022-06-02

申请号：US17466405

申请日：2021-09-03

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Bo Geun YUK ,  Jun Seong LEE ,  Min Hong KIM ,  Tae Joon KIM ,  Eung Kwan LEE

IPC: G06F3/041 ,  G06F3/044

Abstract: A display device includes a display unit comprising a plurality of pixels. A touch sensing unit is disposed on the display unit and comprises a plurality of driving electrodes and a plurality of sensing electrodes. A touch driver supplies a touch driving signal to the driving electrodes through a plurality of driving lines and receives a touch sensing signal from the sensing electrodes through a plurality of sensing lines. During a first horizontal period of one frame period, the touch driver supplies a touch driving signal having a first pulse width to a first partial portion of the driving lines and supplies a touch driving signal having a second pulse width smaller than the first pulse width to a second partial portion of the driving lines that is different from the first partial portion of the driving lines.

公开(公告)号：US20220020333A1

公开(公告)日：2022-01-20

申请号：US17333804

申请日：2021-05-28

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyun Wook CHO ,  Sang Hyun LIM ,  Jun Seong LEE

IPC: G09G3/3266

Abstract: A display device includes: a plurality of pixels; a scan driver configured to supply scan signals of a turn-on level to the scan lines at a cycle of a horizontal synchronization signal; a plurality of first sensors and a plurality of second sensors overlapping at least some of the pixels; and a sensor driver configured to concurrently supply first sensing signals to the first sensors during a first sensing period, to concurrently supply second sensing signals to the second sensors during a second sensing period, and to sequentially supply third sensing signals to the first sensors during a third sensing period, wherein the number of the first sensing signals is an integer greater than 2, wherein the first sensing signals are divided into first groups, and wherein an initial first sensing signal in each of the first groups is synchronized with the horizontal synchronization signal.