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    El display apparatus
    1.
    发明授权
    El display apparatus 有权

    公开(公告)号：US11302253B2

    公开(公告)日：2022-04-12

    申请号：US17007796

    申请日：2020-08-31

    Applicant: JOLED INC.

    Inventor： Hiroshi Takahara ,  Hitoshi Tsuge

    IPC: G09G3/3241 ,  G09G3/325 ,  G09G3/3266 ,  G09G3/32 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G5/02 ,  H01L27/32 ,  H01L27/12 ,  H01L51/52 ,  G09G3/20 ,  H01L29/786 ,  H01L27/15 ,  H01L33/56 ,  H01L33/58

    Abstract: An EL display apparatus is provided. A display screen includes pixels arranged in a matrix, with each pixel including an EL device and a pixel circuit. A source driver circuit is configured to output an analog video signal to each pixel. A gate driver circuit is on at least one side of the display screen, with the gate driver circuit including first and second gate driver circuits. Each pixel includes a driving transistor, a first switch transistor, and a second switch transistor. A gate terminal of the first switch transistor is connected to a first gate signal line of the first gate driver circuit, and a gate terminal of the second switch transistor is connected to a second gate signal line of the second gate driver circuit. The first and second switch transistors are on/off controlled, independently, by the first and second gate driver circuits.

    Display device
    2.
    发明授权
    Display device 有权

    公开(公告)号：US10395595B2

    公开(公告)日：2019-08-27

    申请号：US15609446

    申请日：2017-05-31

    Applicant: JOLED INC.

    Inventor： Masafumi Matsui ,  Hitoshi Tsuge ,  Kohei Ebisuno

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

    Abstract: Pixel circuits each include a write transistor having a gate electrode connected to a write control line, one of a drain electrode and a source electrode connected to a data line for transmitting data voltage corresponding to luminance of the pixel circuit, and the other of the drain electrode and the source electrode connected to a gate electrode of a drive transistor. A compensation circuit includes a compensation transistor connected to a compensation signal line and the write control line. A compensation voltage generation circuit outputs compensation control voltage in accordance with a representative value of data voltage for the pixel circuits. A capacitance of the write control line caused by the compensation transistor and a capacitance of the write control line caused by the write transistors of the pixel circuits have mutually opposite voltage dependence with respect to the representative value of the data voltage for the pixel circuits.

    EL display apparatus
    3.
    发明授权
    EL display apparatus 有权

    公开(公告)号：US10198992B2

    公开(公告)日：2019-02-05

    申请号：US15858692

    申请日：2017-12-29

    Applicant: JOLED INC.

    Inventor： Hiroshi Takahara ,  Hitoshi Tsuge

    IPC: G09G3/3241 ,  G09G3/325 ,  G09G3/3266 ,  H01L27/32 ,  G09G3/32 ,  H01L27/12 ,  H01L51/52 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/20 ,  G09G3/3275 ,  G09G5/02 ,  H01L29/786 ,  H01L27/15 ,  H01L33/56 ,  H01L33/58

    Abstract: An electroluminescent (EL) display apparatus and method of controlling are provided. A display screen includes gate signal lines and source signal lines. A pixel corresponds to each intersection of the gate and source signal lines. Each pixel includes: an EL device including an anode and cathode terminals; a driving transistor to flow a current to the EL device; a first switch transistor provided on a current path through which the current flows from a power line through the driving transistor to the EL device; a second switch transistor to supply, to the driving transistor, an image signal from one of the source signal lines; and a third switch transistor provided between the anode terminal of the EL device and a voltage line. The voltage line is configured to supply a reverse bias voltage for reverse biasing the anode terminal of the EL device.

    Active-matrix display device
    5.
    发明授权
    Active-matrix display device 有权

    公开(公告)号：US09960223B2

    公开(公告)日：2018-05-01

    申请号：US15492464

    申请日：2017-04-20

    Applicant: JOLED INC.

    Inventor： Kohei Ebisuno ,  Masafumi Matsui ,  Hitoshi Tsuge

    IPC: H01L27/32 ,  H01L51/52

    CPC classification number: H01L27/3276 ,  H01L27/3265 ,  H01L51/5206

    Abstract: An active-matrix display device according to the present disclosure includes a plurality of pixels. Each of the pixels includes: a drive transistor disposed on a substrate; and an organic EL element that is caused by the drive transistor to emit light and includes an AM layer disposed above the substrate and a transparent electrode layer disposed above the AM layer. The active-matrix display device further includes: a source line that supplies data to the pixels; and a power supply line that supplies electric power to the pixels. The power supply line is shared by, among the plurality of pixels, two pixels that are adjacent to each other in a second direction that crosses a first direction in which the power supply line is extended. The source line and the AM layer are disposed not to overlap each other in a plan view of the substrate.

    Pixel circuit driving method, pixel circuit, and display device
    7.
    发明授权
    Pixel circuit driving method, pixel circuit, and display device 有权

    公开(公告)号：US11631372B2

    公开(公告)日：2023-04-18

    申请号：US17495251

    申请日：2021-10-06

    Applicant: JOLED INC.

    Inventor： Tetsuro Yamamoto ,  Kenji Kokuda ,  Hitoshi Tsuge ,  Teppei Tanaka

    IPC: G09G3/3233

    Abstract: A pixel circuit driving method is a method for driving a pixel circuit that includes a drive transistor that supplies a current corresponding to a signal voltage supplied via a signal line, a write transistor connected between the signal line and a gate electrode of the drive transistor, and an organic EL element that emits light in accordance with the current. The pixel circuit driving method includes supplying a reference potential to the gate electrode of the drive transistor before a threshold correction preparation operation of making a gate-source voltage of the drive transistor higher than a threshold voltage of the drive transistor.

    EL display apparatus
    8.
    发明授权
    EL display apparatus 有权

    公开(公告)号：US10453395B2

    公开(公告)日：2019-10-22

    申请号：US15992477

    申请日：2018-05-30

    Applicant: JOLED INC.

    Inventor： Hiroshi Takahara ,  Hitoshi Tsuge

    IPC: G09G3/3241 ,  G09G3/325 ,  G09G3/3266 ,  G09G3/32 ,  G09G3/3233 ,  G09G3/3258 ,  G09G3/3275 ,  G09G5/02 ,  H01L33/56 ,  H01L33/58 ,  H01L27/32 ,  H01L27/12 ,  H01L51/52 ,  G09G3/20 ,  H01L29/786 ,  H01L27/15

    Abstract: An electroluminescent (EL) display apparatus and method of controlling are provided. A display screen includes gate and source signal lines. A pixel corresponds to each intersection of the gate and source signal lines. Each pixel includes: an EL device including anode and cathode terminals, the cathode terminal being connected to a common reference voltage; a driving transistor to flow a current to the EL device; a first switch transistor provided on a current path through which the current flows from a power line through the driving transistor to the EL device; a second switch transistor to supply, to the driving transistor, an image signal from one source signal line; and a third switch transistor provided between the anode terminal of the EL device and a voltage line. The voltage line is configured to supply a reverse bias voltage for reverse biasing the anode terminal of the EL device.

    EL display apparatus
    9.
    发明授权
    EL display apparatus 有权

    公开(公告)号：US10198993B2

    公开(公告)日：2019-02-05

    申请号：US15879198

    申请日：2018-01-24

    Applicant: JOLED INC.

    Inventor： Hiroshi Takahara ,  Hitoshi Tsuge

    IPC: G09G3/20 ,  G09G3/32 ,  G09G5/02 ,  G09G3/325 ,  H01L27/12 ,  H01L27/15 ,  H01L27/32 ,  H01L33/56 ,  H01L33/58 ,  H01L51/52 ,  G09G3/3233 ,  G09G3/3241 ,  G09G3/3258 ,  G09G3/3266 ,  G09G3/3275 ,  H01L29/786

    Abstract: An electroluminescent (EL) display apparatus and method of control are provided. A display screen includes gate signal lines which intersect source signal lines. A pixel provided with an EL device corresponds to each intersection of the gate and source signal lines. A driving transistor is provided for each pixel to supply a current to the EL device. A first switch transistor is provided on a current path through which the current is supplied to the EL device. A gate driver circuit is connected to the gate signal lines. The gate driver circuit includes a shift register circuit, and outputs a select or non-select signal for the gate signal lines. The gate driver circuit turns the first switch transistor on and off to control a duty ratio of the display screen. The duty ratio is controlled by a start pulse fed to the shift register circuit.

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