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    INTEGRATOR, TOUCH DISPLAY DEVICE, AND DRIVING METHODS THEREFOR
    2.
    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
    3.
    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.

    TOUCH CIRCUIT, TOUCH DISPLAY DEVICE, AND TOUCH DRIVING METHOD THEREOF
    4.
    发明申请
    TOUCH CIRCUIT, TOUCH DISPLAY DEVICE, AND TOUCH DRIVING METHOD THEREOF 有权

    公开(公告)号：US20220057909A1

    公开(公告)日：2022-02-24

    申请号：US17395150

    申请日：2021-08-05

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu LEE ,  Youngwoo JO ,  HyunWoo JANG

    IPC: G06F3/041 ,  G06F3/0354

    Abstract: Discussed is a touch display device, including a display panel on which a touch screen panel including a plurality of touch electrodes is embedded, and a touch control unit configured to generate a pen detection signal corresponding to a pen driving signal of a stylus from a touch sensing signal transmitted from the display panel, and generate a touch driving signal synchronized with the pen driving signal of the stylus by using the pen detection signal.

    CONVERTING INTEGRATOR, TOUCH DRIVING CIRCUIT, AND TOUCH DISPLAY DEVICE
    7.
    发明公开
    CONVERTING INTEGRATOR, TOUCH DRIVING CIRCUIT, AND TOUCH DISPLAY DEVICE 审中-公开

    公开(公告)号：US20240220045A1

    公开(公告)日：2024-07-04

    申请号：US18389501

    申请日：2023-11-14

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu LEE ,  Hyunwoo KIM ,  JaeKyu PARK

    IPC: G06F3/041

    CPC classification number: G06F3/0416

    Abstract: A touch display device can include a plurality of touch electrodes disposed on or in a display panel; and a touch driving circuit configured to drive the plurality of touch electrodes by outputting a touch driving signal having a first level period and a second level period. Also, the touch driving circuit includes a current regulator configured to receive an input current from at least one of the plurality of touch electrodes during at least a partial period of the first level period and at least a partial period of the second level period of the touch driving signal, and scale down the input current to a first current and output the first current; and a converting integrator configured to output a sensing voltage based on the first current or a second current adjusted from the first current.

    DISPLAY DEVICE AND DATA DRIVING CIRCUIT
    8.
    发明公开
    DISPLAY DEVICE AND DATA DRIVING CIRCUIT 审中-公开

    公开(公告)号：US20240105125A1

    公开(公告)日：2024-03-28

    申请号：US18361741

    申请日：2023-07-28

    Applicant: LG Display Co., Ltd.

    Inventor： Beom-Jin KIM ,  Hyunwoo KIM ,  Bongchoon KWAK ,  HongJu LEE

    IPC: G09G3/3275 ,  G09G3/3266

    CPC classification number: G09G3/3275 ,  G09G3/3266 ,  G09G2310/0286 ,  G09G2310/0291 ,  G09G2310/0294 ,  G09G2310/0297 ,  G09G2310/08 ,  G09G2320/0673

    Abstract: Embodiments of the disclosure relate to a display device and a data driving circuit. Specifically, there may be provided a display device comprising a display panel where a plurality of gate lines, a plurality of data lines, and a plurality of subpixels are disposed, a gate driving circuit configured to supply scan signals to the plurality of gate lines, a data driving circuit configured to convert digital image data into an analog data voltage and supply the analog data voltage to the plurality of data lines, a timing controller configured to control the gate driving circuit and the data driving circuit, a first gamma circuit generating a first gamma voltage corresponding to a first pixel during a period corresponding to a first color selection signal, and a second gamma circuit generating a second gamma voltage corresponding to a second pixel during a period corresponding to a second color selection signal different from the first color selection signal.

    Touch Display Device, Touch Driving Circuit, and Touch Sensing Method
    9.
    发明申请
    Touch Display Device, Touch Driving Circuit, and Touch Sensing Method 有权

    公开(公告)号：US20210200375A1

    公开(公告)日：2021-07-01

    申请号：US17122162

    申请日：2020-12-15

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu LEE

    IPC: G06F3/041

    Abstract: Embodiments of the present disclosure relate to a touch display device, a touch driving circuit, and a touch sensing method, and enable differential sensing using a single-ended amplifier without using a differential amplifier, thereby not only accurately sensing a touch during display driving, but also significantly reducing the number of circuit components and the circuit area for differential sensing.

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