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    DISPLAY DEVICE
    11.
    发明申请
    DISPLAY DEVICE 有权

    公开(公告)号：US20220397974A1

    公开(公告)日：2022-12-15

    申请号：US17821455

    申请日：2022-08-22

    Applicant: SAMSUNG DISPLAY CO., LTD.

    Inventor： Do Ik KIM ,  Gwang Bum KO ,  Sung Hwan KIM

    IPC: G06F3/041 ,  H01L27/32 ,  H01L41/113 ,  H01L51/52 ,  G06F3/043

    Abstract: A display device that senses externally applied pressure and a change in the resonant frequency of a piezoelectric element. The display device includes a piezoelectric sensor layer including a piezoelectric sensor; and a display panel disposed on the piezoelectric sensor layer. The piezoelectric sensor includes: a piezoelectric element having a first electrode, a second electrode facing the first electrode, and a piezoelectric material disposed between the first electrode and the second electrode; an alternating current (AC) voltage generator connected to the first electrode and applies a voltage having a resonance frequency to the piezoelectric element. A sensing circuit connected to the second electrode is configured to measure a change in impedance of the piezoelectric element.

    TOUCH SENSOR AND DISPLAY DEVICE INCLUDING THE SAME
    12.
    发明申请
    TOUCH SENSOR AND DISPLAY DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20220155895A1

    公开(公告)日：2022-05-19

    申请号：US17532918

    申请日：2021-11-22

    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 ,  G09G3/3208 ,  G06F3/047 ,  H01L27/32 ,  G06F3/044

    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.

    TOUCH DETECTING UNIT AND DISPLAY DEVICE INCLUDING THE SAME
    13.
    发明申请
    TOUCH DETECTING UNIT AND DISPLAY DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20210005677A1

    公开(公告)日：2021-01-07

    申请号：US16895768

    申请日：2020-06-08

    Applicant: Samsung Display Co., Ltd.

    Inventor： Kang Won LEE ,  Do Ik KIM ,  Choon Hyop LEE ,  Jang Hui KIM ,  Sang Chul LEE

    IPC: H01L27/32 ,  G06F3/041 ,  G06F3/044

    Abstract: A touch detecting unit comprises first sensor electrodes arranged in a first direction and electrically connected with one another second sensor electrodes arranged in a second direction crossing the first direction, and electrically connected with one another, the second sensor electrodes electrically separated from the first sensor electrodes, and third sensor electrodes electrically separated from the first sensor electrodes and the second sensor electrodes. Amounts of change in first capacitances between the first sensor electrodes and the second sensor electrodes are detected in a first mode. Amounts of change in the first capacitances and amounts of change in a second capacitance between the first sensor electrodes and the third sensor electrodes are detected in a second mode.

    TOUCH SENSOR AND DISPLAY DEVICE
    14.
    发明申请
    TOUCH SENSOR AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20200319735A1

    公开(公告)日：2020-10-08

    申请号：US16835784

    申请日：2020-03-31

    Applicant: Samsung Display Co., Ltd.

    Inventor： Jang Hui KIM ,  Ga Young KIM ,  Do Ik KIM ,  Sang Chul LEE ,  A Ra JO

    IPC: G06F3/045

    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.

    TOUCH SENSOR AND DISPLAY DEVICE INCLUDING THE SAME
    15.
    发明申请
    TOUCH SENSOR AND DISPLAY DEVICE INCLUDING THE SAME 审中-公开

    公开(公告)号：US20200293139A1

    公开(公告)日：2020-09-17

    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: G06F3/041 ,  G06F3/044 ,  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.

    TOUCH SENSOR AND METHOD OF DRIVING THE SAME
    17.
    发明申请
    TOUCH SENSOR AND METHOD OF DRIVING THE SAME 审中-公开

    公开(公告)号：US20180329576A1

    公开(公告)日：2018-11-15

    申请号：US15949585

    申请日：2018-04-10

    Applicant: Samsung Display Co., Ltd.

    Inventor： Do Ik KIM ,  Ga Young KIM ,  Young Sik KIM ,  Sang Chul LEE

    IPC: G06F3/041 ,  G06F3/044

    CPC classification number: G06F3/0418 ,  G06F3/044 ,  G06F2203/04111

    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.

    TOUCH SENSOR AND DISPLAY DEVICE
    18.
    发明公开
    TOUCH SENSOR AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20240036684A1

    公开(公告)日：2024-02-01

    申请号：US18374569

    申请日：2023-09-28

    Applicant: Samsung Display Co., Ltd.

    Inventor： Do Ik KIM ,  Jang hui KIM ,  Sang Chul LEE ,  Ga Young KIM

    IPC: G06F3/044 ,  G06F3/041

    CPC classification number: G06F3/044 ,  G06F3/0416 ,  G06F3/0412

    Abstract: A touch sensor includes a base layer; a first electrode member that includes a plurality of first electrodes arranged on the base layer and electrically connected to each other along a first direction, each of the first electrodes including a first opening; a second electrode member that includes a plurality of second electrodes arranged on the base layer and electrically connected to each other along a second direction that intersects the first direction; a conductive member that includes a plurality of conductive patterns electrically connected to each other along the first direction; and a proximity detector that is electrically connected to the conductive member and configured to detect proximity of an object by receiving a proximity sensing signal from the conductive member. Each of the conductive patterns is located in the first opening of each of the first electrodes and spaced apart from each of the first electrodes, respectively.

    TOUCH DETECTING UNIT AND DISPLAY DEVICE INCLUDING THE SAME
    20.
    发明申请
    TOUCH DETECTING UNIT AND DISPLAY DEVICE INCLUDING THE SAME 有权

    公开(公告)号：US20220367576A1

    公开(公告)日：2022-11-17

    申请号：US17863705

    申请日：2022-07-13

    Applicant: Samsung Display Co., Ltd.

    Inventor： Kang Won LEE ,  Do Ik KIM ,  Choon Hyop LEE ,  Jang Hui KIM ,  Sang Chul LEE

    IPC: H01L27/32 ,  G06F3/044 ,  G06F3/041

    Abstract: A touch detecting unit comprises first sensor electrodes arranged in a first direction and electrically connected with one another; second sensor electrodes arranged in a second direction crossing the first direction, and electrically connected with one another, the second sensor electrodes electrically separated from the first sensor electrodes, and third sensor electrodes electrically separated from the first sensor electrodes and the second sensor electrodes. Amounts of change in first capacitances between the first sensor electrodes and the second sensor electrodes are detected in a first mode. Amounts of change in the first capacitances and amounts of change in a second capacitance between the first sensor electrodes and the third sensor electrodes are detected in a second mode.

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