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    DISPLAY DEVICE HAVING TOUCH SENSORS AND DRIVING METHOD THEREOF
    13.
    发明申请
    DISPLAY DEVICE HAVING TOUCH SENSORS AND DRIVING METHOD THEREOF 审中-公开

    公开(公告)号：US20190265835A1

    公开(公告)日：2019-08-29

    申请号：US16408010

    申请日：2019-05-09

    Applicant: LG DISPLAY CO., LTD.

    Inventor： Seungrok SHIN ,  Deuksu LEE ,  Sangkyu KIM ,  Jaegyun LEE ,  Taeyun KIM

    IPC: G06F3/041 ,  G09G3/3266 ,  G02F1/1362 ,  G06F3/044 ,  G02F1/1333 ,  G09G3/3275 ,  G09G3/36 ,  H01L27/32

    Abstract: A display device can include an organic light emitting layer positioned between an anode electrode and a cathode electrode; an encapsulation layer disposed on the organic emission layer to protect the organic emission layer; a touch layer disposed on the sealing layer, the touch layer having a plurality of touch sensors configured to be driven according to a touch driving signal; a ground modulation signal generator configured to generate a ground modulation signal having a same amplitude as an amplitude of the touch driving signal; and a driving voltage supply configured to generate a modulated driving voltage based on the ground modulation signal, and apply the modulated driving voltage to a driving voltage supply line in synchronization with the touch driving signal within a same display frame.

    TOUCH DISPLAY PANEL, TOUCH DISPLAY DEVICE, AND DRIVING METHOD THEREOF
    17.
    发明申请
    TOUCH DISPLAY PANEL, TOUCH DISPLAY DEVICE, AND DRIVING METHOD THEREOF 审中-公开

    公开(公告)号：US20200026408A1

    公开(公告)日：2020-01-23

    申请号：US16517163

    申请日：2019-07-19

    Applicant: LG DISPLAY CO., LTD.

    Inventor： HwiDeuk LEE ,  Sangkyu KIM ,  Taeyun KIM ,  Yangsik LEE ,  Jaeseung KIM

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

    Abstract: Discussed are a touch display panel, a touch display device, and a driving method thereof, wherein a constant voltage is applied to a cathode electrode during a period for sensing a finger touch or a pen touch, thereby performing touch sensing while performing display driving. In addition, a signal having the same phase and potential as the signal applied to the touch electrode is applied to the cathode electrode during a period for transmitting an uplink signal to the pen, thereby eliminating parasitic capacitance between the touch electrode and the cathode electrode, preventing transmission delay of the uplink signal, improving the recognition rate of the uplink signal, and enhancing the performance of pen-touch sensing.

    DISPLAY DEVICE WITH TOUCH SENSOR AND METHOD FOR MANUFACTURING SAME
    18.
    发明申请
    DISPLAY DEVICE WITH TOUCH SENSOR AND METHOD FOR MANUFACTURING SAME 审中-公开

    公开(公告)号：US20190155430A1

    公开(公告)日：2019-05-23

    申请号：US16190217

    申请日：2018-11-14

    Applicant: LG DISPLAY CO., LTD.

    Inventor： KwangJo HWANG ,  Sangkyu KIM

    IPC: G06F3/041 ,  G06F3/044

    Abstract: The present disclosure provides a display device including: a transparent substrate; a circuit unit disposed on the transparent substrate and comprising a plurality of circuit areas and a plurality of light-emitting areas respectively corresponding to the plurality of circuit areas; a plurality of touch electrode rows, one of the plurality of touch electrode rows comprising a plurality of sub-touch electrodes disposed to overlap the plurality of light-emitting areas and a plurality of first connection portions configured to connect the plurality of sub-touch electrodes in a first direction; and a touch wiring line extending in a second direction and configured to supply a touch signal to one sub-touch electrode of the plurality of touch electrode rows. A method of manufacturing the display device is also provided.

    Touch Display Device and Method for Driving Thereof
    20.
    发明申请
    Touch Display Device and Method for Driving Thereof 审中-公开

    公开(公告)号：US20180348931A1

    公开(公告)日：2018-12-06

    申请号：US15813098

    申请日：2017-11-14

    Applicant: LG Display Co., Ltd.

    Inventor： Jaeseung KIM ,  JiHyun JUNG ,  DeukSu LEE ,  Sangkyu KIM ,  JaeGyun LEE ,  Taeyun KIM

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

    Abstract: The present exemplary embodiments relate to a touch display device and a driving method thereof. A touch sensing time period is divided into a period when the touch is sensed by a self capacitive sensing manner and a period when the touch is sensed by a mutual capacitive sensing manner and a ground signal modulated to be the same as the touch driving signal is output to the display panel during the time period when the touch is sensed by the self capacitive sensing manner. By doing this, the parasitic capacitance in the display panel is reduced, sensitivity of touch sensing is improved, and various touch functions are provided.

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