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：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：US10949046B2

公开(公告)日：2021-03-16

申请号：US15463954

申请日：2017-03-20

Applicant: Samsung Display Co., Ltd.

Inventor： Kyung Su Lee ,  Jun Young Ko ,  Yeon Tae Kim ,  Eun Sol Seo ,  Jin Young Jeon ,  In Young Han

IPC: G06F3/044 ,  G06F3/041 ,  G01L1/14

Abstract: A pressure sensor including: a first conductor; a second conductor spaced apart from the first conductor, and positioned so as to form a capacitance with the first conductor; and an elastic member positioned between the first conductor and the second conductor, in which the capacitance varies according to a pressure applied to one or more of the first conductor and the second conductor, and the first conductor has a shape different from that of the second conductor.

公开(公告)号：US11942018B2

公开(公告)日：2024-03-26

申请号：US17937805

申请日：2022-10-04

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Woo Choi ,  Tae Joon Kim ,  Eun Sol Seo ,  Hyun Wook Cho

IPC: G09G3/20 ,  G06F3/041 ,  G06F3/044 ,  H04M1/02 ,  H04M1/72454 ,  H04W52/02

CPC classification number: G09G3/2092 ,  G06F3/0412 ,  G06F3/04164 ,  G06F3/041662 ,  G06F3/0443 ,  G06F3/0446 ,  H04M1/0266 ,  H04M1/72454 ,  H04W52/027 ,  G06F2203/04101 ,  G06F2203/04108 ,  G06F2203/04112 ,  G09G2330/027 ,  G09G2354/00 ,  H04M2250/22

Abstract: A display device is described including a display panel for displaying an image and an input sensing unit disposed on the display panel for sensing a user input. The input sensing unit includes: an electrode unit including first electrodes and second electrodes which intersect each other and a control unit for determining the proximity of an object or the shape of the object, based on capacitance change values of the first electrodes and the second electrodes. In a first mode the input sensing unit is driven using a self-capacitance method. The control unit may merge the capacitance change values, and determine the proximity of the object based on the merged value. In a second mode based on mutual capacitance, the control unit may determine the shape of the object.

公开(公告)号：US11195447B2

公开(公告)日：2021-12-07

申请号：US16449049

申请日：2019-06-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jae Woo Choi ,  Tae Joon Kim ,  Eun Sol Seo ,  Hyun Wook Cho

IPC: G09G3/20 ,  G06F3/044 ,  G06F3/041 ,  H04W52/02 ,  H04M1/02 ,  H04M1/72454

Abstract: A display device is described including a display panel for displaying an image and an input sensing unit disposed on the display panel for sensing a user input. The input sensing unit includes: an electrode unit including first electrodes and second electrodes which intersect each other and a control unit for determining the proximity of an object or the shape of the object, based on capacitance change values of the first electrodes and the second electrodes. In a first mode the input sensing unit is driven using a self-capacitance method. The control unit may merge the capacitance change values, and determine the proximity of the object based on the merged value. In a second mode based on mutual capacitance, the control unit may determine the shape of the object.

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：US11782550B2

公开(公告)日：2023-10-10

申请号：US17877670

申请日：2022-07-29

Applicant: Samsung Display Co., Ltd.

Inventor： Hyun Wook Cho ,  Tae Joon Kim ,  Eun Sol Seo ,  Eung Kwan Lee ,  Jae Woo Choi

IPC: G06F3/041

CPC classification number: G06F3/04164 ,  G06F3/0412 ,  G06F3/04162 ,  G06F2203/04107

Abstract: An input sensing unit may include the following elements: a first sensing electrode including first sensors and a first connector coupling the first sensors; a second sensing electrode including second sensors and a second connector coupling the second sensors; a first sensing line including first sensing line parts and a third connector coupling the first sensing line parts; a second sensing line; and an insulating layer including a first insulating side and a second insulating side opposite the first insulating side. The first sensing line parts may overlap the first sensors and may be disposed on the first insulating side. The second sensing line may overlap the second sensors and may be disposed on the first insulating side. The first sensors may be disposed on the second insulating side. The second sensors may be disposed on the second insulating side.

公开(公告)号：US10534467B2

公开(公告)日：2020-01-14

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.

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.