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    Display device, test circuit, and test method thereof
    3.
    发明授权
    Display device, test circuit, and test method thereof 有权

    公开(公告)号：US10692411B2

    公开(公告)日：2020-06-23

    申请号：US16224324

    申请日：2018-12-18

    Applicant: LG Display Co., Ltd.

    Inventor： Beom-Jin Kim ,  Sunkyung Shin ,  Bongchoon Kwak ,  Sojung Jung

    IPC: G06F3/038 ,  G09G3/00 ,  G09G3/3275 ,  G09G3/3266 ,  G09G3/3233

    Abstract: The embodiments of the present disclosure relate to a display device, a test circuit, and a test method thereof. More specifically, a display device may include a silicon substrate having a plurality of gate lines, a plurality of data lines, a plurality of sensing lines, and a pixel array on which a plurality of subpixels are arranged; a test circuit arranged on the silicon substrate, the test circuit configured to select at least one line of the plurality of data lines or the plurality of sensing lines, to convert a signal transmitted through the selected line into a digital signal, and to output test data; and a test pad unit configured to output the test data to a circuit outside the silicon substrate.

    Display device
    4.
    发明授权
    Display device 有权

    公开(公告)号：US12118934B2

    公开(公告)日：2024-10-15

    申请号：US17884319

    申请日：2022-08-09

    Applicant: LG DISPLAY CO., LTD.

    Inventor： UnSang Yu ,  Bongchoon Kwak

    IPC: G09G3/3233

    CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0861 ,  G09G2320/0242 ,  G09G2320/029 ,  G09G2330/10

    Abstract: A display device, by detecting a subpixel which is a defect by using an electronic fuse electrically connected to a driving transistor disposed on a subpixel and performing a repair, a display device being capable of detecting a defect and repairing by a circuit driving of the subpixel can be provided. Thus, even in the case that a repair by a physical method is not possible according to types of the display device, by detecting a defect of the subpixel and performing a repair, an image quality deterioration due to the defect of the subpixel can be prevented.

    Display device and data driving circuit
    6.
    发明授权
    Display device and data driving circuit 有权

    公开(公告)号：US12236898B2

    公开(公告)日：2025-02-25

    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

    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.

    Light emitting display apparatus
    7.
    发明授权
    Light emitting display apparatus 有权

    公开(公告)号：US11727856B2

    公开(公告)日：2023-08-15

    申请号：US17899247

    申请日：2022-08-30

    Applicant: LG Display Co., Ltd.

    Inventor： Bongchoon Kwak

    IPC: G09G3/32 ,  G09G3/20 ,  G09G3/34

    CPC classification number: G09G3/2096 ,  G09G3/3406 ,  G09G2300/0426 ,  G09G2300/0842 ,  G09G2330/021 ,  G09G2330/08

    Abstract: A light emitting display apparatus can include a first pixel and a second pixel. The first pixel can include a first light emitting device and a first pixel driving circuit configured to drive the first light emitting device. The second pixel can include a second light emitting device and a second pixel driving circuit configured to drive the second light emitting device. The light emitting display apparatus can further include a repair transistor connected between the first light emitting device and the second light emitting device, and a repair control transistor connected to a gate of the repair transistor.

    Virtual reality (VR) gate driver changing resolution of display panel based on changing eye focus position
    8.
    发明授权
    Virtual reality (VR) gate driver changing resolution of display panel based on changing eye focus position 有权

    公开(公告)号：US11430391B2

    公开(公告)日：2022-08-30

    申请号：US17352794

    申请日：2021-06-21

    Applicant: LG Display Co., Ltd.

    Inventor： Bongchoon Kwak ,  Sunkyung Shin

    IPC: G09G3/3266 ,  G09G3/3275 ,  G09G3/36

    Abstract: A gate driver, a data driver, and a display apparatus including the gate driver and the data driver, may enable a resolution of each region of a display panel to be changed. The gate driver may include a gate resolution control signal output device outputting gate resolution control signals; a gate pulse generating device generating gate pulses to be output to gate lines; and a gate line selection device selecting gate lines, to which the gate pulses output from the gate pulse generating device are to be transferred, on the basis of the gate resolution control signals. The gate pulse generating device includes gate stages generating the gate pulses. The gate line selection device includes gate serial switches; and gate parallel switches. The gate serial switches respectively connect the gate stages to the gate lines, and each of the gate parallel switches connects two adjacent gate lines.

    Electroluminescent Display Device and Head Mounted Display Device
    9.
    发明申请
    Electroluminescent Display Device and Head Mounted Display Device 有权

    公开(公告)号：US20220158132A1

    公开(公告)日：2022-05-19

    申请号：US17470450

    申请日：2021-09-09

    Applicant: LG Display Co., Ltd.

    Inventor： Bongchoon Kwak ,  UnSang Yu ,  Jaehun Jun

    IPC: H01L51/52 ,  H01L27/32

    Abstract: An electroluminescent display device comprises first to third subpixels each of which including a contact area and a light emission area, each subpixel provided with a first electrode, the first electrode extending from the light emission area to the contact area of each of the first to third subpixels; a first reflective layer provided in the light emission area of the first subpixel and electrically insulated from the first electrode of the first subpixel; a second reflective layer provided at least in the light emission area of the second subpixel; and a third reflective layer provided at least in the light emission area of the third subpixel.

    Micro-display device and method of driving same
    10.
    发明授权
    Micro-display device and method of driving same 有权

    公开(公告)号：US11114039B2

    公开(公告)日：2021-09-07

    申请号：US16702922

    申请日：2019-12-04

    Applicant: LG Display Co., Ltd.

    Inventor： Sojung Jung ,  Beom-Jin Kim ,  Bongchoon Kwak

    IPC: G09G3/32 ,  G09G3/3291 ,  G02B27/01

    Abstract: A micro-display device comprises a silicon substrate in which a plurality of gate lines, a plurality of data lines, a plurality of emission signal lines, and a plurality of subpixels are disposed; a gate driver circuit disposed on a first side of a pixel array to drive the plurality of gate lines; an emission driver circuit driving the plurality of emission signal lines and disposed on a second side of the pixel array different from the first side of the pixel array where the gate driver circuit is disposed; a data driver circuit disposed on a third side of the pixel array to drive the plurality of data lines; a memory storing duty data regarding duty ratios of an emission signal applied to the plurality of emission signal lines; and a control circuit controlling signals applied to the gate driver circuit, the data driver circuit and the emission driver circuit, wherein the control circuit is set to have different emission times with respect to subpixels connected to the plurality of emission signal lines according to the duty data stored in the memory.

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