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公开(公告)号：US11947763B2
公开(公告)日：2024-04-02
申请号：US17660731
申请日：2022-04-26
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Jang Hui Kim , Hyung Chul Kim , A Ra Jo
CPC classification number: G06F3/0446 , G01L1/22 , G06F3/0412 , G06F3/0443 , G06F2203/04112
Abstract: An input sensing device includes a plurality of first sensing electrodes having a plurality of first sensor units extending in a first direction. A plurality of second sensing electrodes has a plurality of second sensor units extending in a second direction different from the first direction. A first strain gauge includes a first force electrode located proximate to a first electrode of the plurality of first sensing electrodes. A second force electrode is located proximate to a second electrode of the plurality of first sensing electrodes. A first connecting electrode connects to both of the first force electrode and the second force electrode.
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公开(公告)号：US20230384901A1
公开(公告)日：2023-11-30
申请号：US18200535
申请日：2023-05-22
Applicant: Samsung Display Co., Ltd.
Inventor： Jang Hui Kim , Ga Young Kim , A Ra Jo
CPC classification number: G06F3/0446 , G06F3/0418 , G06F3/0412 , G06F2203/04105
Abstract: A touch sensor includes a base layer, a first electrode unit, second electrode units, and a first strain gauge. The first electrode unit includes first touch electrodes arranged on the base layer along a first direction and electrically connected to each other along the first direction. The second electrode units are spaced apart from one another along the first direction. Each of the second electrode units includes second touch electrodes arranged on the base layer along a second direction intersecting the first direction and electrically connected to each other along the second direction. Each of the second touch electrodes includes a first opening. The first strain gauge includes first resistance lines electrically connected to each other along the first direction. Each of the first resistance lines is disposed in a respective first opening disposed in a first row among the first openings.
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公开(公告)号：US11640223B2
公开(公告)日：2023-05-02
申请号：US17850892
申请日：2022-06-27
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Choon Hyop Lee , Kang Won Lee , Ga Young Kim , Jang Hui Kim , A Ra Jo
Abstract: A sensing circuit includes: a plurality of sensor electrodes; a first capacitance between the sensor electrodes; a plurality of proximity sensing electrodes electrically isolated from the sensor electrodes; and a second capacitance between at least one of the sensor electrodes and the proximity sensing electrodes. A density of at least one of the proximity sensing electrodes is less than a density of at least one of the sensor electrodes.
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公开(公告)号：US11502141B2
公开(公告)日：2022-11-15
申请号：US17198885
申请日：2021-03-11
Applicant: Samsung Display Co., Ltd.
Inventor： In Nam Lee , Jang Hui Kim , Choon Hyop Lee
Abstract: A display device including a display panel including pixels that emit light on a frame basis. An input sensing unit includes driving electrodes and sensing electrodes. A driving signal generator is configured to provide driving signals to the driving electrodes. Analog front-ends are configured to receive sensing signals depending on the driving signals from the sensing electrodes. A signal processor is configured to detect touch input, based on differential output values of the analog front-ends. The driving signal generator provides the driving signals to the driving electrodes while avoiding a period in which a pulse of a vertical synchronization signal defining start of the frame is generated.
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公开(公告)号：US20210313401A1
公开(公告)日：2021-10-07
申请号：US17198885
申请日：2021-03-11
Applicant: Samsung Display Co., Ltd.
Inventor： In Nam Lee , Jang Hui Kim , Choon Hyop Lee
Abstract: A display device including a display panel including pixels that emit light on a frame basis. An input sensing unit includes driving electrodes and sensing electrodes. A driving signal generator is configured to provide driving signals to the driving electrodes. Analog front-ends are configured to receive sensing signals depending on the driving signals from the sensing electrodes. A signal processor is configured to detect touch input, based on differential output values of the analog front-ends. The driving signal generator provides the driving signals to the driving electrodes while avoiding a period in which a pulse of a vertical synchronization signal defining start of the frame is generated.
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Patent Agency Ranking
公开(公告)号：US12135857B2
公开(公告)日：2024-11-05
申请号：US18200535
申请日：2023-05-22
Applicant: Samsung Display Co., Ltd.
Inventor： Jang Hui Kim , Ga Young Kim , A Ra Jo
Abstract: A touch sensor includes a base layer, a first electrode unit, second electrode units, and a first strain gauge. The first electrode unit includes first touch electrodes arranged on the base layer along a first direction and electrically connected to each other along the first direction. The second electrode units are spaced apart from one another along the first direction. Each of the second electrode units includes second touch electrodes arranged on the base layer along a second direction intersecting the first direction and electrically connected to each other along the second direction. Each of the second touch electrodes includes a first opening. The first strain gauge includes first resistance lines electrically connected to each other along the first direction. Each of the first resistance lines is disposed in a respective first opening disposed in a first row among the first openings.
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公开(公告)号：US11983360B2
公开(公告)日：2024-05-14
申请号：US17708188
申请日：2022-03-30
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Choon Hyop Lee , Jang Hui Kim , Jae Won Kim , In Nam Lee
CPC classification number: G06F3/04166 , G06F3/0418 , G06F3/0446 , G09G3/32
Abstract: A touch sensor including: a touch sensing area including driving electrodes and sensing electrodes; a driving signal generator which determines phases of driving signals based on a reference code and supplies the driving signals to the sensing electrodes, wherein the driving signals are sine waves; and a touch processor which receives sensing signals according to the driving signals from the sensing electrodes and determines a touch position based on the sensing signals and the reference code, wherein the driving signal generator controls the phases of the driving signals by updating the reference code at a predetermined time point.
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公开(公告)号：US20230409156A1
公开(公告)日：2023-12-21
申请号：US18238578
申请日：2023-08-28
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: A 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 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 first touch electrodes and the second touch electrodes.
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公开(公告)号：US11543914B2
公开(公告)日：2023-01-03
申请号：US17711594
申请日：2022-04-01
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： Choon Hyop Lee , Jang Hui Kim , Jae Won Kim , In Nam Lee
Abstract: An input sensing device includes driving electrodes and sensing electrodes, and an analog front-end which processes sensing signals from the sensing electrodes to output a differential output value. The analog front-end includes a first charge amplifier which differentially amplifies first and second sensing signals from two sensing electrodes to first and second input terminals, thus outputting first and second differential signals through first and second output terminals, a second charge amplifier which differentially amplifies the first and second differential signals, thus outputting third and fourth differential signals, a first demodulation circuit which filters the first and second differential signals in a first mode and filters each of the third and fourth differential signals in a second mode, and a first analog-to-digital converter which outputs a first sensing value based on at least one output signal of the first demodulation circuit.
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公开(公告)号：US10936137B2
公开(公告)日：2021-03-02
申请号：US16358048
申请日：2019-03-19
Applicant: SAMSUNG DISPLAY CO., LTD.
Inventor： In Nam Lee , Jang Hui Kim , Sang Chul Lee , A Ra Jo
Abstract: A touch sensing device includes a first base layer, a plurality of first sensing electrodes disposed on the first base layer and spaced apart in a first direction, a plurality of second sensing electrodes disposed on a same layer as the first sensing electrodes and arranged in different rows from the first sensing electrodes, a plurality of third sensing electrodes on the second sensing electrodes that are spaced apart along a second direction different from the first direction and that overlap the second sensing electrodes, and a plurality of fourth sensing electrodes on the first sensing electrodes that are spaced apart along the second direction and that overlap the first sensing electrodes. At least two of the second sensing electrodes are directly connected to each other.
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