公开(公告)号：US11775123B2

公开(公告)日：2023-10-03

申请号：US17713085

申请日：2022-04-04

Applicant: Samsung Display Co., Ltd.

Inventor： Do Ik Kim ,  Ga Young Kim ,  Young Sik Kim ,  Sang Chul Lee

IPC: G06F3/044 ,  G06F3/041

CPC classification number: G06F3/0445 ,  G06F3/0418 ,  G06F3/0446 ,  G06F2203/04111 ,  G06F2203/04112

Abstract: A touch sensor includes a sensor unit including a plurality of first electrodes in an active area spaced apart from each other, and at least one second electrode, a plurality of sensing channels respectively coupled to one of the first electrodes, and each sensing channel including a reference node having a variable voltage coupled to the at least one second electrode, and a processor configured to receive output signals from the sensing channels, and detect a touch input based on the output signals. The plurality of sensing channels may be configured to supply driving signals to respective first electrodes during a first period, receive sensing signals from respective first electrodes during a second period, and generate the output signals corresponding to the sensing signals received from respective first electrodes based on potentials of the respective reference nodes. A method of driving a touch sensor also is disclosed.

公开(公告)号：US11768571B2

公开(公告)日：2023-09-26

申请号：US17546992

申请日：2021-12-09

Applicant: Samsung Display Co., Ltd.

Inventor： Jang Hui Kim ,  Ga Young Kim ,  Do Ik Kim ,  Sang Chul Lee ,  A Ra Jo

IPC: G06F3/045

CPC classification number: G06F3/045 ,  G06F2203/04105

Abstract: The touch sensor includes first touch electrode members disposed on a base layer and located in a sensing area, each of the first touch electrode members including a plurality of first touch electrodes arranged along a first direction, each of the first touch electrodes including a first opening; second touch electrode members disposed on the base layer and located in a sensing area, each of the second touch electrode members including a plurality of second touch electrodes arranged along a second direction, each of the second touch electrodes including a second opening; and a first pressure sensor disposed on the base layer and including a first strain gauge. A portion of the first strain gauge is located in the second sensing area, and the first strain gauge includes a portion located in the second sensing area and disposed in the same layer as the plurality of first touch electrodes and the plurality of second touch electrodes.

公开(公告)号：US11640211B2

公开(公告)日：2023-05-02

申请号：US16921764

申请日：2020-07-06

Applicant: Samsung Display Co., Ltd.

Inventor： Jung Hak Kim ,  Do Ik Kim ,  Ga Young Kim ,  Young Sik Kim ,  Sang Chul Lee

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/3225

Abstract: A display device includes a display region and a sensing region overlapping with each other, a plurality of pixels in the display region, a plurality of first electrodes arranged in a first direction in the sensing region, a plurality of second electrodes arranged in a second direction in the sensing region, and a driving circuit including a display driver for driving the pixels corresponding to image data, and a touch driver for sensing a touch input using a sensing signal input from each of the first electrodes, and configured to supply a noise compensation signal corresponding to the image data to the second electrodes during a period in which the pixels are driven.

公开(公告)号：US11231810B2

公开(公告)日：2022-01-25

申请号：US16906563

申请日：2020-06-19

Applicant: Samsung Display Co., Ltd.

Inventor： Do Ik Kim ,  Kang Won Lee ,  Choon Hyop Lee

IPC: G06F3/041 ,  G06F3/044

Abstract: A display device includes: a base substrate; a self-light emitting element on the base substrate; a thin film encapsulation layer on the self-light emitting element; a first sensing electrode on the thin film encapsulation layer and including an opening; a second sensing electrode on the thin film encapsulation layer and spaced apart from the first sensing electrode; a conductive pattern in the opening and spaced apart from the first sensing electrode; and a sensor controller configured to detect a change of a mutual capacitance between the first sensing electrode and the second sensing electrode in a first mode and configured to detect a change of a mutual capacitance between the conductive pattern and the first sensing electrode in a second mode different from the first mode.

公开(公告)号：US11068099B2

公开(公告)日：2021-07-20

申请号：US16889079

申请日：2020-06-01

Applicant: Samsung Display Co., Ltd.

Inventor： Jung Hak Kim ,  Do Ik Kim ,  Young Sik Kim ,  Sang Chul Lee

IPC: G06F3/044 ,  G06F3/041 ,  G06F3/047 ,  H01L27/32 ,  H01L51/52 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/20

Abstract: A touch sensor includes a sensor unit having a first region including at least one pair of a first electrode and a second electrode, and a second region including at least two pairs of first electrodes and second electrodes, a plurality of sensing channels each including first and second input terminals, wherein the first input terminals of the sensing channels are connected to different ones of the first electrodes, an amplifying circuit connected between the second input terminals of the sensing channels and the second electrodes, and an input control unit connected between the amplifying circuit and the second electrodes, the input control unit including a first resistor connected to the second electrode of the first region, and a second resistor commonly connected to the second electrodes of the second region.

公开(公告)号：US10782826B2

公开(公告)日：2020-09-22

申请号：US16446717

申请日：2019-06-20

Applicant: Samsung Display Co., Ltd.

Inventor： Do Ik Kim ,  Sang Hyun Lim ,  Ga Young Kim ,  Young Sik Kim ,  Sang Chul Lee

IPC: G06F3/041 ,  G06F3/044

Abstract: In an embodiment, a touch sensor may include a sensor part including a first electrode and a second electrode, a signal receiving part, an amplifier circuit part connected between the second electrode and the signal receiving part, an analog-to-digital converter part configured to output a digital signal corresponding to a voltage difference between input terminals, and a processor configured to detect a touch input from the sensor part in response to the digital signal when operating in a first mode, and to output a gain control signal for calibrating a gain value of the amplifier circuit part in response to the digital signal when operating in a second mode.

公开(公告)号：US20190235678A1

公开(公告)日：2019-08-01

申请号：US16163116

申请日：2018-10-17

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Do Ik Kim ,  Gwang Bum Ko ,  Jung Hak Kim ,  Sang Chul Lee ,  Ga Young Kim

IPC: G06F3/041 ,  G06F3/044 ,  G09G3/20

Abstract: There is provided a display device including a high-sensitivity touch sensor. A display device includes: pixels arranged in a display region; sensing electrodes arranged in a sensing region; sensing lines coupled to the respective sensing electrodes; a noise detection electrode disposed on the same layer as the sensing electrodes; sensing channels each including a first input terminal coupled to any one of the sensing electrodes and a second input terminal coupled to the noise detection electrode, the sensing channels each generating an output signal corresponding to a voltage difference between the first and second input terminals; and a processor detecting a touch input, using the output signals of the sensing channels.

公开(公告)号：US12282636B2

公开(公告)日：2025-04-22

申请号：US17875909

申请日：2022-07-28

Applicant: Samsung Display Co., Ltd.

Inventor： Ga Young Kim ,  Do Ik Kim ,  Jang Hui Kim

IPC: G06F3/044 ,  G06F3/041 ,  H10K59/40 ,  H10K59/12

Abstract: Provided are a touch sensor and a display device. The touch sensor includes a base layer; first electrode members arranged on the base layer in a first direction and spaced apart from one another in a second direction intersecting the first direction, each of the first electrode members including a first opening and a plurality of first touch electrodes electrically connected to one another in the first direction; second electrode members arranged on the base layer in the second direction and spaced apart from one another in the first direction, each of the second electrode members including a second opening and a plurality of second touch electrodes electrically connected to one another in the second direction intersecting the first direction; a first strain gauge including a portion located in the first opening and disposed in a first electrode row among electrode rows of the first electrode members; a second strain gauge including a portion located in the second opening and disposed in a first row among rows of the second touch electrodes; a first signal line connected to one end of the first strain gauge; a second signal line connected to another end of the first strain gauge and spaced apart from the first signal line; a third signal line connected to one end of the second strain gauge and the second signal line; and a fourth signal line connected to another end of the second strain gauge and spaced apart from the third signal line.

公开(公告)号：US20230325019A1

公开(公告)日：2023-10-12

申请号：US18209444

申请日：2023-06-13

Applicant: Samsung Display Co., Ltd.

Inventor： Do Ik Kim ,  Ga Young Kim ,  Sang Hyun Lim ,  Young Sik Kim ,  Sang Chul Lee ,  Hwan Hee Jeong

IPC: G06F3/041 ,  G06F3/047 ,  G06F3/044 ,  G09G3/3208

CPC classification number: G06F3/0412 ,  G06F3/0418 ,  G06F3/047 ,  G06F3/0446 ,  H10K59/40 ,  G06F3/04182 ,  G06F3/044 ,  G09G3/3208 ,  G06F3/0443 ,  G06F2203/04111 ,  G06F2203/04112

Abstract: A touch sensor includes a first electrode, a second electrode, and a sensing channel. The first electrode includes first electrode cells arranged in a first direction, a first connection portion connecting the first electrode cells in the first direction and a first opening disposed in at least one of the first electrode cells. The second electrode includes an electrode portion disposed in the first opening. The electrode portion is disposed on a same layer as the first electrode cells and separated from the first electrode. The sensing channel includes a first terminal and a second terminal. The first terminal is connected to the first electrode. The second terminal is connected to the second electrode.

公开(公告)号：US11681389B2

公开(公告)日：2023-06-20

申请号：US16809061

申请日：2020-03-04

Applicant: Samsung Display Co., Ltd.

Inventor： Do Ik Kim ,  Jang-Hui Kim ,  Ga Young Kim ,  A Ra Jo

IPC: G06F3/00 ,  G06F3/041 ,  G06F3/044 ,  G06F1/16

CPC classification number: G06F3/0414 ,  G06F1/1626 ,  G06F3/0412 ,  G06F3/0418 ,  G06F3/0446 ,  G06F2203/04106

Abstract: A touch sensor and a display device, in which the touch sensor includes: a base layer including a first region which is a flat portion, and a second region which is a curved portion extending from the first region; touch electrodes arranged on the base layer and each including an opening; a strain gauge disposed in the first region; and a temperature compensation pattern disposed in the second region.