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    Organic Light Emitting Display Device and Driving Method Thereof
    11.
    发明申请
    Organic Light Emitting Display Device and Driving Method Thereof 审中-公开

    公开(公告)号：US20190122616A1

    公开(公告)日：2019-04-25

    申请号：US16167957

    申请日：2018-10-23

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu Lee ,  JinBong Chung ,  Beom-Jin Kim

    IPC: G09G3/3291 ,  H01L27/32 ,  G09G3/3266 ,  G09G3/3258

    Abstract: An organic light emitting display device and a driving method thereof may turn on first and second transistors, wherein the first transistor electrically connects a data line and a first node of a driving transistor that drives an organic light emitting diode of each sub-pixel, and the second transistor electrically connects a second node of the driving transistor and a reference voltage line, and may provide a detection driving data voltage and a detection driving reference voltage to the first and second nodes of the driving transistor, respectively, to perform initialization; may turn off the first and second transistors to float the first and second nodes of the driving transistor, and may detect one or more from among a short and to an open of the organic light emitting diode by sensing the voltage of the first node or the second node of the driving transistor.

    Touch display device, method for driving the same, driving circuit, data-driving circuit, and gate-driving circuit
    14.
    发明授权
    Touch display device, method for driving the same, driving circuit, data-driving circuit, and gate-driving circuit 有权

    公开(公告)号：US11620010B2

    公开(公告)日：2023-04-04

    申请号：US17354885

    申请日：2021-06-22

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu Lee ,  HyeongWon Kang ,  Youngwoo Jo

    IPC: G06F3/044 ,  G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362 ,  G09G3/36

    Abstract: The present embodiments may provide a touch display device including: a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are disposed; a gate-driving circuit configured to drive the plurality of gate lines; a data-driving circuit configured to drive the plurality of data lines; and a touch-driving circuit configured to drive the plurality of touch electrodes while the plurality of data lines and the plurality of gate lines are driven. In this touch display device, while a touch-driving signal swings with a predetermined amplitude, a data signal and a gate signal may also swing with the predetermined amplitude. According to the present embodiments, it is possible to enable high-speed image display and high-speed touch sensing, to perform a display operation and a touch operation simultaneously, and to display an image normally without any image change.

    TOUCH DISPLAY DEVICE, COMMON DRIVING CIRCUIT, AND DRIVING METHOD
    16.
    发明申请
    TOUCH DISPLAY DEVICE, COMMON DRIVING CIRCUIT, AND DRIVING METHOD 审中-公开

    公开(公告)号：US20200210007A1

    公开(公告)日：2020-07-02

    申请号：US16719006

    申请日：2019-12-18

    Applicant: LG DISPLAY CO., LTD.

    Inventor： HongJu Lee ,  HyeongWon Kang ,  Youngwoo Jo

    IPC: G06F3/041 ,  G06F3/047 ,  G09G3/36 ,  G02F1/1362 ,  G02F1/1333

    Abstract: A touch display device, a common driving circuit, and a driving method are discussed. The touch display device can include a common driving circuit configured to drive a plurality of common electrodes used for display driving and touch driving, wherein the common driving circuit can include a common signal stabilization amplifier configured to control the average of a first input signal and a second input signal, which are respectively received from a first common electrode and a second common electrode, to correspond to a reference common signal and to output a first control input signal and a second control input signal; and a differential amplifier configured to output a differential sensing signal that is proportional to the difference between the first control input signal and the second control input signal. Accordingly, the impact of display driving and touch driving on each other when simultaneously performing the display driving and the touch driving can be reduced.

    Amplifier Circuit and Display Apparatus Having the Same
    17.
    发明公开
    Amplifier Circuit and Display Apparatus Having the Same 审中-公开

    公开(公告)号：US20240258977A1

    公开(公告)日：2024-08-01

    申请号：US18501389

    申请日：2023-11-03

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu Lee ,  Hyunwoo Kim ,  Beom-Jin Kim

    IPC: H03F3/21 ,  G09G3/3275

    CPC classification number: H03F3/211 ,  G09G3/3275 ,  G09G2310/0291 ,  G09G2320/0252 ,  G09G2330/021 ,  H03F2200/366 ,  H03F2200/87

    Abstract: Disclosed is an amplifier circuit comprising a first stage having first and second input terminals, a second stage configured to amplify a voltage supplied from the first stage and including a pull-up node and a pull-down node, a third stage including an output terminal, a tenth PMOS transistor, and a tenth NMOS transistors having gate electrodes respectively connected to the pull-up node and the pull-down node of the second stage, the third stage configured to perform a pull-up driving and pull-down driving of the amplified voltage, a first boosting circuit including an eleventh PMOS transistor having a gate electrode connected to the pull-up node and the first boosting circuit configured to increase a current in the first stage, and a second boosting circuit including an eleventh NMOS transistor having a gate electrode connected to the pull-down node and configured to increase the current in the first stage.

    Touch Display Device, Method for Driving the Same, Driving Circuit, Data-Driving Circuit, and Gate-Driving Circuit
    19.
    发明申请
    Touch Display Device, Method for Driving the Same, Driving Circuit, Data-Driving Circuit, and Gate-Driving Circuit 有权

    公开(公告)号：US20210318771A1

    公开(公告)日：2021-10-14

    申请号：US17354885

    申请日：2021-06-22

    Applicant: LG Display Co., Ltd.

    Inventor： HongJu Lee ,  HyeongWon Kang ,  Youngwoo Jo

    IPC: G06F3/041 ,  G02F1/1333 ,  G02F1/1343 ,  G02F1/1362 ,  G06F3/044 ,  G09G3/36

    Abstract: The present embodiments may provide a touch display device including: a display panel in which a plurality of data lines, a plurality of gate lines, and a plurality of touch electrodes are disposed; a gate-driving circuit configured to drive the plurality of gate lines; a data-driving circuit configured to drive the plurality of data lines; and a touch-driving circuit configured to drive the plurality of touch electrodes while the plurality of data lines and the plurality of gate lines are driven. In this touch display device, while a touch-driving signal swings with a predetermined amplitude, a data signal and a gate signal may also swing with the predetermined amplitude. According to the present embodiments, it is possible to enable high-speed image display and high-speed touch sensing, to perform a display operation and a touch operation simultaneously, and to display an image normally without any image change.

    Integrator, touch display device, and driving methods therefor
    20.
    发明授权
    Integrator, touch display device, and driving methods therefor 有权

    公开(公告)号：US11126308B2

    公开(公告)日：2021-09-21

    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 ,  H03K17/96 ,  G06F3/038

    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.

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