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    Organic light emitting display device and driving method thereof
    1.
    发明授权
    Organic light emitting display device and driving method thereof 有权

    公开(公告)号：US10943544B2

    公开(公告)日：2021-03-09

    申请号：US16167957

    申请日：2018-10-23

    Applicant: LG Display Co., Ltd.

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

    IPC: G09G5/10 ,  G09G3/3291 ,  G09G3/3266 ,  G09G3/3258 ,  G09G3/3233 ,  H01L27/32 ,  G06F3/01

    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.

    Driving circuit and touch display device
    3.
    发明授权
    Driving circuit and touch display device 有权

    公开(公告)号：US10521035B2

    公开(公告)日：2019-12-31

    申请号：US15793612

    申请日：2017-10-25

    Applicant: LG Display Co., Ltd.

    Inventor： HyeongWon Kang ,  Beom-Jin Kim ,  HongJu Lee

    IPC: G06F3/045 ,  G06F3/041 ,  G06F3/047 ,  G06F3/044

    Abstract: A touch display device and a driving circuit are disclosed in which the driving circuit is included in the touch display device. The driving circuit may be capable of reducing a chip size and power consumption by configuring an amplifier disposed in an output terminal of a data voltage to be electrically coupled with a feedback capacitor through a switch, and enabling both display driving and touch sensing to be performed through ON/OFF control of the switch. Further, the accuracy and performance of touch sensing may be improved by adjusting an ON/OFF operation of a switch and the number of amplifiers electrically coupled with the feedback capacitor, and a circuit structure for touch driving may be further simplified by generating a load-free driving voltage output in a touch driving period using the amplifiers and a digital-to-analog converter within the driving circuit.

    Organic Light Emitting Display Device and Driving Method Thereof
    4.
    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 Driving Circuit and Touch Display Device
    6.
    发明公开
    Touch Driving Circuit and Touch Display Device 审中-公开

    公开(公告)号：US20230185403A1

    公开(公告)日：2023-06-15

    申请号：US17978766

    申请日：2022-11-01

    Applicant: LG Display Co., Ltd.

    Inventor： HyeongWon Kang ,  Beom-Jin Kim

    IPC: G06F3/041

    CPC classification number: G06F3/04166

    Abstract: Embodiments of the disclosure relate to a touch driving circuit and a touch display device. There may be provided a touch driving circuit capable of attenuating noise in the touch sensing signal and enhancing the output signal by the integrator by transferring charge through a sample-and-hold driving path and a bypass driving path, inverting the polarity of the charge sampled by the sampling switching block, and increasing the number of times of sampling. Further, as the amount of charge transferred by the offset voltage control switch included in the sample-and-hold driving path and bypass driving path may be adjusted within an offset voltage range, the performance of touch sensing may be enhanced.

    Display device and control method for the same
    7.
    发明授权
    Display device and control method for the same 有权

    公开(公告)号：US10529287B2

    公开(公告)日：2020-01-07

    申请号：US16047730

    申请日：2018-07-27

    Applicant: LG DISPLAY CO., LTD.

    Inventor： SunKyung Shin ,  Beom-Jin Kim

    IPC: G09G3/3291 ,  H01L51/52 ,  G09G3/3233 ,  H01L27/32 ,  G06F3/01 ,  G06F1/3218 ,  G06F1/16 ,  G06F1/3234 ,  G02B27/01 ,  G09G3/36 ,  G09G3/00

    Abstract: A display device and a method of controlling the display device are discussed. The display device includes a first display configured to display a first line at a first time and configured to display a second line at a second time at a position spaced a predetermined distance apart from the position at which the first line is displayed, a second display configured to display the second line at the first time and configured to display the first line at the second time, a first driver IC configured to drive the first display, a second driver IC configured to drive the second display, and a controller configured to transmit, to the first driver IC, information on the first line at the first time and information on the second line at the second time and configured to supply, to the second driver IC, information on the second line at the first time and information on the first line at the second time.

    Analog front end and touch display device
    8.
    发明授权
    Analog front end and touch display device 有权

    公开(公告)号：US12086354B2

    公开(公告)日：2024-09-10

    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 ,  G06F3/0418 ,  G06F3/044 ,  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.

    Amplifier Circuit and Display Apparatus Having the Same
    9.
    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.

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