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    TOUCH DISPLAY DEVICE, DATA DRIVING CIRCUIT, AND TOUCH SENSING METHOD
    2.
    发明申请
    TOUCH DISPLAY DEVICE, DATA DRIVING CIRCUIT, AND TOUCH SENSING METHOD 有权

    公开(公告)号：US20210200354A1

    公开(公告)日：2021-07-01

    申请号：US17115229

    申请日：2020-12-08

    Applicant: LG DISPLAY CO., LTD.

    Inventor： HyeongWon KANG ,  Jaehun JUN

    IPC: G06F3/041 ,  H01L27/32 ,  G09G3/3275 ,  G06F3/044

    Abstract: Embodiments of the present disclosure relate to a touch display device, a data driving circuit, and a touch sensing method. By sensing multiple data lines simultaneously using gate signals for display as touch driving pulses, it is possible to provide touch sensing without having a separate touch electrode for touch sensing and touch driving pulses. The touch sensing method includes outputting gate signals sequentially having a pulse section including two or more pulses to gate lines, by a gate driving circuit; outputting an image data voltage to data lines, by a source driving circuit; sensing the data lines by combining every N (N is a natural number of 2 or more) data lines or sensing a plurality of reference voltage lines by combining every N reference voltage lines, by a sensing circuit; and determining a touch or a touch coordinate, based on sensing values obtained by sensing of the sensing circuit.

    Touch Display Device, Driving Circuit and Driving Method Thereof
    3.
    发明申请
    Touch Display Device, Driving Circuit and Driving Method Thereof 有权

    公开(公告)号：US20210191555A1

    公开(公告)日：2021-06-24

    申请号：US17116530

    申请日：2020-12-09

    Applicant: LG Display Co., Ltd.

    Inventor： Youngwoo JO ,  HyeongWon KANG

    IPC: G06F3/041 ,  G09G3/36 ,  G06F3/044

    Abstract: Embodiments of the present disclosure relate to touch display devices, driving circuits, and driving methods, and more specifically, to a touch display device, a driving circuit, and a driving method for enabling the functionality of a micro control unit to be minimized and power consumption to be reduced by allowing one or more combined integrated circuits to generate a touch sensing control signal and provide the generated signal to a plurality of combined integrated circuits. Further, according to embodiments of the present disclosure, touch display devices, driving circuits, and driving methods are provided for enabling power consumption of a touch power integrated circuit to be reduced by using a touch sensing control signal generated by one or more combined integrated circuits as a load-free driving signal.

    Touch Display Device and Touch Driving Circuit
    6.
    发明申请
    Touch Display Device and Touch Driving Circuit 审中-公开

    公开(公告)号：US20190138150A1

    公开(公告)日：2019-05-09

    申请号：US16172169

    申请日：2018-10-26

    Applicant: LG Display Co., Ltd.

    Inventor： HyongHwan KIM ,  HyeongWon KANG ,  Youngwoo JO

    IPC: G06F3/041 ,  G06F3/044

    CPC classification number: G06F3/0418 ,  G06F3/0412 ,  G06F3/04164 ,  G06F3/04166 ,  G06F3/044 ,  G06F3/0443 ,  G06F3/0445 ,  G06F3/0446

    Abstract: The present embodiments relate to a touch display device and a touch driving circuit, which may detect a short circuit occurring between touch electrodes and between a plurality of touch lines. The touch display device comprises: a touch display panel in which touch electrodes and a plurality of touch lines are disposed, wherein the touch electrodes are divided into n multiplexer groups and each multiplexer group comprises m touch electrodes, and the plurality of touch lines correspond to and are electrically connected to the touch electrodes; a touch driving circuit comprising a multiplexer part and a pre-amplifying part, and configured to drive the touch electrodes, wherein the multiplexer part comprises m multiplexer circuits, and the pre-amplifying part comprises m pre-amplifiers; and a touch controller configured to detect an existence of a touch or a location of a touch performed by one or more of a finger and a pen.

    ANALOG FRONT END AND TOUCH DISPLAY DEVICE
    7.
    发明公开
    ANALOG FRONT END AND TOUCH DISPLAY DEVICE 审中-公开

    公开(公告)号：US20230384885A1

    公开(公告)日：2023-11-30

    申请号：US18196495

    申请日：2023-05-12

    Applicant: LG DISPLAY CO., LTD.

    Inventor： Beom-Jin KIM ,  HyeongWon KANG

    IPC: G06F3/041 ,  G06F3/044

    CPC classification number: G06F3/04164 ,  G06F3/044 ,  G06F3/0418 ,  G06F3/0412

    Abstract: An analog front end for a touch display device operates each of two or more charge removers through a simplified wiring structure by providing an analog front end including a charge remover including a switched-capacitor array that discharges electric charge of a first input terminal of an operational amplifier and a control signal latching circuit that latches a received serial signal according to a generated pulse to generate and output an individual control signal of the switched-capacitor array.

    DISPLAY DEVICE INCLUDING TOUCH SENSOR AND TOUCH SENSING METHOD FOR THE SAME
    8.
    发明申请
    DISPLAY DEVICE INCLUDING TOUCH SENSOR AND TOUCH SENSING METHOD FOR THE SAME 有权

    公开(公告)号：US20210232252A1

    公开(公告)日：2021-07-29

    申请号：US17233182

    申请日：2021-04-16

    Applicant: LG Display Co., Ltd.

    Inventor： JaeKyu PARK ,  HyunWoo JANG ,  HyeongWon KANG ,  SuWon LEE

    IPC: G06F3/041 ,  G06F3/044 ,  G06F3/0354 ,  G06F3/047

    Abstract: A display device includes at least one touch sensor configured to sense a touch in response to a touch signal, a display panel including the at least one touch sensor and configured to operate in one of a display mode and a touch-sensing mode, a first circuit and a second circuit. The first circuit is configured to supply at least one of a first touch signal and a second touch signal to the at least one touch sensor during the touch-sensing mode, to yield at least one supplied signal, the first touch signal being different from the second touch signal. The second circuit is configured to control signal lines corresponding to the at least one touch sensor to receive a signal corresponding to the at least one supplied signal or to be in an electrically open state.

    INTEGRATOR, TOUCH DISPLAY DEVICE, AND DRIVING METHODS THEREFOR
    9.
    发明申请
    INTEGRATOR, TOUCH DISPLAY DEVICE, AND DRIVING METHODS THEREFOR 审中-公开

    公开(公告)号：US20190187832A1

    公开(公告)日：2019-06-20

    申请号：US16209516

    申请日：2018-12-04

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu LEE ,  HyeongWon KANG

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

    CPC classification number: G06F3/044 ,  G06F3/0383 ,  G06F3/0412 ,  G06F3/0416 ,  G09G2310/0291 ,  G09G2310/0294 ,  G09G2310/0297 ,  H03K17/9622 ,  H03K2217/96073 ,  H03K2217/96074

    Abstract: The disclosure provides an integrator, a touch display device, and a driving method therefor which can perform amplification and integration functions together. The integrator includes an amplifier having a non-inverting input terminal to which a reference signal having a pulse waveform is supplied; at least one feedback capacitor; a first path switching unit configured to connect the feedback capacitor between an inverting input terminal and an output terminal of the amplifier during a rising period of the reference signal; and a second path switching unit configured to connect the feedback capacitor between the inverting input terminal and the output terminal of the amplifier during a falling period of the reference signal, wherein, during each of the rising period and the falling period of the reference signal, a voltage difference between the reference signal and a signal applied to the inverting input terminal of the amplifier is amplified and accumulated, and the amplified and accumulated voltage difference is output.

    TOUCH CIRCUIT, TOUCH SENSING DEVICE, AND TOUCH SENSING METHOD
    10.
    发明申请
    TOUCH CIRCUIT, TOUCH SENSING DEVICE, AND TOUCH SENSING METHOD 审中-公开

    公开(公告)号：US20180173342A1

    公开(公告)日：2018-06-21

    申请号：US15844533

    申请日：2017-12-16

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu LEE ,  HyeongWon KANG ,  Youngwoo JO

    IPC: G06F3/044 ,  G06F3/041

    CPC classification number: G06F3/044 ,  G06F3/0412 ,  G06F3/0416 ,  G06F3/0418

    Abstract: The present disclosure relates to a touch circuit, a touch sensing device, and a touch sensing method. According to the present disclosure, it is possible to obtain an accurate touch sensing result (the presence or absence of a touch and/or a touch position) by compensating for the unintentional change in the quantity of the charge corresponding to a signal obtained by driving a touch screen panel, so as to obtain sensing data in which the influence of the parasitic capacitance generated inside or outside the touch screen panel is reduced or eliminated, thereby improving capacitance-based touch sensing performance.

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