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    Stylus pen and touch sensing system and driving method of the same
    12.
    发明授权
    Stylus pen and touch sensing system and driving method of the same 有权

    公开(公告)号：US10203782B2

    公开(公告)日：2019-02-12

    申请号：US15215769

    申请日：2016-07-21

    Applicant: LG Display Co., Ltd.

    Inventor： Doyoung Jung ,  Hyunguk Jang ,  Sungchul Kim ,  Sanghyuck Bae ,  Sungsu Han ,  Suyun Ju

    IPC: G06F3/045 ,  G06F3/038 ,  G06F3/044 ,  G06F3/0354

    Abstract: A touch sensing system comprises a touchscreen with a plurality of touch electrodes, to which a touchscreen driving signal is applied, and a stylus pen that generates a pen driving signal based on the touchscreen driving signal and sends the same to the touchscreen. The stylus pen comprises: an amplifier that amplifies the touchscreen driving signal to generate an amplified signal; a comparator that compares the amplified signal with a preset reference voltage to generate a comparator output signal; and a signal processor that measures the pulse width of the comparator output signal, adjusts an amount of delay based on a measurement, and determines an output timing of the pen driving signal based on an adjusted amount of delay to synchronize the pen driving signal with the touchscreen driving signal.

    Driving circuit, touch display device, and method for driving the touch display device
    13.
    发明授权
    Driving circuit, touch display device, and method for driving the touch display device 有权

    公开(公告)号：US11487371B2

    公开(公告)日：2022-11-01

    申请号：US16872089

    申请日：2020-05-11

    Applicant: LG Display Co., Ltd.

    Inventor： CheolSe Kim ,  BuYeol Lee ,  YongChan Park ,  Suyun Ju

    IPC: G06F3/041 ,  G06F3/044

    Abstract: The present embodiments relate to a touch technology and, more particularly, to a touch display device, which includes multiple first electrodes embedded in a display panel, at least one second electrode positioned outside the display panel, and a touch force sensing gap existing between the multiple first electrodes and the at least one second electrode, a method for driving the same, and a driving circuit for driving the multiple first electrodes and the at least one second electrode. The present embodiments, as described above, make it possible to sense not only a touch position, but also a touch force, with which the user presses the screen during a touch.

    Touch screen device
    19.
    发明授权
    Touch screen device 有权

    公开(公告)号：US11467679B2

    公开(公告)日：2022-10-11

    申请号：US14959337

    申请日：2015-12-04

    Applicant: LG DISPLAY CO., LTD.

    Inventor： Suyun Ju ,  SungChul Kim ,  SangHyuck Bae ,  Sungsu Han ,  DoYoung Jung

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

    Abstract: Disclosed is a touch screen device for transmitting button manipulation information based on a touch pen without using a separate wireless communication module. The touch screen device includes a touch screen including a plurality of touch electrodes, a touch driving circuit applying a touch electrode driving signal to the plurality of touch electrodes, and a touch pen receiving the touch electrode driving signal applied to the plurality of touch electrodes and transmitting a pen output signal to the touch screen in response to the received touch electrode driving signal. The touch pen includes at least one button, and when a user manipulates the at least one button, the touch pen adjusts the pen output signal.

    Touch display device, pen, touch system, touch circuit, and pen recognition method
    20.
    发明授权
    Touch display device, pen, touch system, touch circuit, and pen recognition method 有权

    公开(公告)号：US11029790B2

    公开(公告)日：2021-06-08

    申请号：US16802236

    申请日：2020-02-26

    Applicant: LG DISPLAY CO., LTD.

    Inventor： Suyun Ju ,  HyungUk Jang ,  SangHyuck Bae ,  DoYoung Jung ,  SeungSeok Oh ,  Sungsu Han

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

    Abstract: A touch display device may include: a panel including a plurality of touch electrodes, and a touch circuit configured to: transfer a panel driving signal to the panel, and receive a pen information signal, output from a pen in response to the panel driving signal, through the panel, each of the panel driving signal and the pen information signal including a plurality of pulses, the pen information signal including one or more state sections among: an in-phase state section including pulses in phase with the pulses of the panel driving signal, an antiphase state section including pulses having a different phase from the pulses of the panel driving signal, and a passive state section distinguished from the in-phase state section and the antiphase state section.

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