公开(公告)号：US12038475B2

公开(公告)日：2024-07-16

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

CPC classification number: G01R31/2891

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：US12142175B2

公开(公告)日：2024-11-12

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 ,  G06F3/044

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：US12183228B2

公开(公告)日：2024-12-31

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 ,  G06F3/044

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：US11769430B2

公开(公告)日：2023-09-26

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 ,  G06F3/044

CPC classification number: G09G3/006 ,  G06F3/0412 ,  G09G3/3233 ,  G06F3/0416 ,  G06F3/0446 ,  G06F2203/04111 ,  G09G2300/0426 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2330/021 ,  G09G2330/10

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：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：US11662848B2

公开(公告)日：2023-05-30

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

CPC classification number: G06F3/0412 ,  G06F3/0446 ,  G06F3/04184 ,  G06F2203/04111

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.