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    Gate driver and display device using the same
    1.
    发明授权
    Gate driver and display device using the same 有权

    公开(公告)号：US11798489B2

    公开(公告)日：2023-10-24

    申请号：US17859852

    申请日：2022-07-07

    Applicant: LG Display Co., Ltd.

    Inventor： Ki Won Son ,  Seok Noh ,  Ki Min Son ,  Seo Jun Yeom

    IPC: G09G3/3266 ,  G09G3/3291 ,  G09G3/3233

    CPC classification number: G09G3/3266 ,  G09G3/3233 ,  G09G3/3291 ,  G09G2300/0426 ,  G09G2300/0852

    Abstract: A gate driver according to an embodiment and a display device using the same are discussed. The gate driver can output a gate signal to a pixel circuit having a driving element connected between a first power line and a first node, a light-emitting element connected between the first node and a second power line, and a switching element connected between the first node and a third power line and driven by the gate signal. The gate driver includes a first circuit unit to receive a carry signal from a previous signal transmission unit to charge or discharge a first control node and a second control node, and a second circuit unit having a first buffer transistor and a second buffer transistor configured to output the gate signal based on a first clock signal and a first low potential voltage according to potentials of the first and second control nodes.

    Pixel Circuit and Display Device Including the Same
    3.
    发明申请
    Pixel Circuit and Display Device Including the Same 有权

    公开(公告)号：US20230012381A1

    公开(公告)日：2023-01-12

    申请号：US17839174

    申请日：2022-06-13

    Applicant: LG Display Co., Ltd.

    Inventor： Hyun Soo Lee ,  Yong Won Lee ,  Seo Jun Yeom

    IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/3283

    Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit includes a driving element including a first electrode connected to a first node to which a pixel driving voltage is applied, a gate electrode connected to a second node, and a third electrode connected to a third node; a light emitting element including an anode electrode connected to the third node, and a cathode electrode to which a pixel ground voltage supply voltage is applied; a first switch element configured to supply a data voltage to the second node in response to a scan pulse; and a second switch element configured to supply a first initialization voltage set to a negative voltage that is less than the pixel ground voltage supply voltage to the third node in response to a first initialization pulse.

    Sensing circuit and display device including the same
    4.
    发明授权
    Sensing circuit and display device including the same 有权

    公开(公告)号：US12148385B2

    公开(公告)日：2024-11-19

    申请号：US18464047

    申请日：2023-09-08

    Applicant: LG Display Co., Ltd.

    Inventor： Hyun Soo Lee ,  Seo Jun Yeom

    IPC: G09G3/3233 ,  G09G3/3291

    Abstract: A sensing circuit and a display device including the same are disclosed. The sensing circuit includes: a first external power line connected to a pixel power line applying a pixel driving voltage to pixels; a second external power line connected to the pixel power line; a first selection switch element connected between the first external power line and a voltage source; a current sensor connected to the second external power line; and a second selection switch element connected between the current sensor and the voltage source, wherein the first selection switch element is turned on responsive to a first signal to supply the pixel driving voltage to the first external power line during an image display period, and the second selection switch element is turned on responsive to the second signal and the current sensor measures a current flowing through the second external power line during a sensing period.

    Pixel Circuit and Display Device Including the Same
    5.
    发明公开
    Pixel Circuit and Display Device Including the Same 审中-公开

    公开(公告)号：US20240169921A1

    公开(公告)日：2024-05-23

    申请号：US18491187

    申请日：2023-10-20

    Applicant: LG Display Co., Ltd.

    Inventor： Yong Won Lee ,  Seo Jun Yeom ,  Byeung Jae Woo

    IPC: G09G3/3233

    CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/0262 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/045 ,  G09G2320/064 ,  G09G2330/021

    Abstract: A pixel circuit is disclosed. The pixel circuit includes: a driving element including a first electrode connected to a first node, a gate electrode connected to a second node, and a second electrode connected to a third node; a light emitting element including an anode electrode connected to a fourth node and configured to be driven according to the current from the driving element; a first switch element configured to supply a data voltage to the second node; a second switch element configured to supply an initialization voltage to the first node; a third switch element configured to supply a reference voltage to the third node or the fourth node; a fourth switch element configured to supply a cathode voltage or the reference voltage to the third node or the fourth node; and a fifth switch element configured to supply a pixel driving voltage to the first node.

    Pixel circuit and display device including the same
    6.
    发明授权
    Pixel circuit and display device including the same 有权

    公开(公告)号：US12243495B2

    公开(公告)日：2025-03-04

    申请号：US18487542

    申请日：2023-10-16

    Applicant: LG Display Co., Ltd.

    Inventor： Hyun Soo Lee ,  Sung Ho Hong ,  Seo Jun Yeom

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

    Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit includes a driving element including a first electrode connected to a first power line, a gate electrode connected to a first node, and a second electrode connected to a second node, a first switch element connected between a data line through which a first or second data voltage is applied and the first node, and supplies the first data voltage to the first node responsive to a first gate signal, a second switch element connected between the data line and the second node and supplies the second data voltage to the second node responsive to a second gate signal, a light-emitting element including an anode connected to the second node and a cathode connected to a second power line, and a capacitor connected between the first and second nodes.

    Pixel circuit and display device including the same
    8.
    发明授权
    Pixel circuit and display device including the same 有权

    公开(公告)号：US12272310B2

    公开(公告)日：2025-04-08

    申请号：US18491187

    申请日：2023-10-20

    Applicant: LG Display Co., Ltd.

    Inventor： Yong Won Lee ,  Seo Jun Yeom ,  Byeung Jae Woo

    IPC: G09G5/00 ,  G09G3/3233

    Abstract: A pixel circuit is disclosed. The pixel circuit includes: a driving element including a first electrode connected to a first node, a gate electrode connected to a second node, and a second electrode connected to a third node; a light emitting element including an anode electrode connected to a fourth node and configured to be driven according to the current from the driving element; a first switch element configured to supply a data voltage to the second node; a second switch element configured to supply an initialization voltage to the first node; a third switch element configured to supply a reference voltage to the third node or the fourth node; a fourth switch element configured to supply a cathode voltage or the reference voltage to the third node or the fourth node; and a fifth switch element configured to supply a pixel driving voltage to the first node.

    Pixel Circuit and Display Device Including the Same
    9.
    发明公开
    Pixel Circuit and Display Device Including the Same 审中-公开

    公开(公告)号：US20240212631A1

    公开(公告)日：2024-06-27

    申请号：US18487542

    申请日：2023-10-16

    Applicant: LG Display Co., Ltd.

    Inventor： Hyun Soo Lee ,  Sung Ho Hong ,  Seo Jun Yeom

    IPC: G09G3/3291 ,  G09G3/3266

    CPC classification number: G09G3/3291 ,  G09G3/3266 ,  G09G3/3258 ,  G09G2310/027

    Abstract: A pixel circuit and a display device including the same are disclosed. The pixel circuit includes a driving element including a first electrode connected to a first power line, a gate electrode connected to a first node, and a second electrode connected to a second node, a first switch element connected between a data line through which a first or second data voltage is applied and the first node, and supplies the first data voltage to the first node responsive to a first gate signal, a second switch element connected between the data line and the second node and supplies the second data voltage to the second node responsive to a second gate signal, a light-emitting element including an anode connected to the second node and a cathode connected to a second power line, and a capacitor connected between the first and second nodes.

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