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：US10379641B2

公开(公告)日：2019-08-13

申请号：US15647110

申请日：2017-07-11

Applicant: Samsung Display Co., Ltd.

Inventor： Sang Hyun Lim ,  Chang Sub Jung ,  A Ra Jo ,  Jae Woo Choi

IPC: G06F3/044 ,  G06F3/038 ,  G06F3/0354 ,  G06F3/041

Abstract: A touch screen apparatus includes: an active area and a non-active area outside the active area; first sensing electrodes arranged along a first direction in the active area; second sensing electrodes arranged along a second direction intersecting the first direction in the active area, the second sensing electrodes being insulated from the first sensing electrodes; and at least one additional sensing electrode separated from the first and second sensing electrodes, the at least one additional sensing electrode being located in the non-active area.

公开(公告)号：US20170357354A1

公开(公告)日：2017-12-14

申请号：US15603660

申请日：2017-05-24

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： SANG HYUN LIM ,  Chang Sub Jung ,  A Ra Jo ,  Jae Woo Choi

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/0412 ,  G06F3/0416 ,  G06F3/044 ,  G06F2203/04105 ,  H05K1/16 ,  H05K1/189 ,  H05K2201/10053 ,  H05K2201/10128

Abstract: A display device includes a display panel configured to display an image on a front surface thereof, and a flexible circuit board connected to the display panel and configured to drive the display panel. The display device further includes a pressure sensor including a first electrode and a second electrode. The pressure sensor is configured to sense a change of capacitance of a capacitor, which is formed between the first electrode and the second electrode, in accordance with a pressure applied thereto. The flexible circuit board includes a first surface and a second surface facing the first surface. The first electrode and the second electrode are disposed on the first surface or the second surface.

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：US12105915B2

公开(公告)日：2024-10-01

申请号：US17875335

申请日：2022-07-27

Applicant: Samsung Display Co., LTD.

Inventor： Hyun Wook Cho ,  Min Hong Kim ,  Tae Joon Kim ,  Hyung Bae Kim ,  Jung Mok Park ,  Il Ho Lee ,  Jae Woo Choi

IPC: G06F3/041 ,  G06F3/044

CPC classification number: G06F3/04186 ,  G06F3/0412 ,  G06F3/041662 ,  G06F3/0446 ,  G06F2203/04111

Abstract: A display device includes a display unit including pixels. A sensor unit overlaps with the display unit and includes sensors. A sensor driver transmits a driving signal to the sensors, and receives sensing signals corresponding to the driving signal from the sensors. One sensing period includes a first sensing period and a second sensing period. The sensor driver transmits a first driving signal having a first frequency to the sensors in the first sensing period, and transmits a second driving signal having a second frequency different from the first frequency to the sensors in the second sensing period.

公开(公告)号：US12087192B1

公开(公告)日：2024-09-10

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: G06F3/041 ,  G06F3/044 ,  G09G3/00 ,  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：US11880520B2

公开(公告)日：2024-01-23

申请号：US17403100

申请日：2021-08-16

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Hyung Bae Kim ,  Tae Joon Kim ,  Jae Woo Choi

IPC: G06F3/041 ,  G06F3/044 ,  H10K59/40 ,  H10K59/179

CPC classification number: G06F3/0412 ,  G06F3/0446 ,  H10K59/1795 ,  H10K59/40

Abstract: A touch member for a display device includes first and second touch signal lines and an insulating layer between first and second conductive layers. The first touch signal line includes a first sub-touch signal line corresponding to the first conductive layer, and a second sub-touch signal line corresponding to the second conductive layer and connected to the first sub-touch signal line through first and second contact holes penetrating the insulating layer. The second touch signal line includes a third sub-touch signal line corresponding to the first conductive layer, and a fourth sub-touch signal line corresponding to the second conductive layer and connected to the third sub-touch signal line through third and fourth contact holes penetrating the insulating layer. The first and second contact holes are spaced by a first distance, and the third and fourth contact holes are spaced by a second distance less than the first distance.

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：US11495165B2

公开(公告)日：2022-11-08

申请号：US17457818

申请日：2021-12-06

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.