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：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.