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    EL DISPLAY APPARATUS
    1.
    发明申请
    EL DISPLAY APPARATUS 审中-公开

    公开(公告)号：US20200258451A1

    公开(公告)日：2020-08-13

    申请号：US16861676

    申请日：2020-04-29

    Applicant: JOLED INC.

    Inventor： Hiroshi TAKAHARA ,  Hitoshi TSUGE

    IPC: G09G3/3241 ,  H01L27/12 ,  H01L27/32 ,  G09G3/3275 ,  G09G3/20 ,  G09G3/3258 ,  G09G3/3233 ,  H01L51/52 ,  G09G3/32 ,  G09G3/3266 ,  G09G3/325

    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 PANEL AND DISPLAY DEVICE
    2.
    发明申请
    DISPLAY PANEL AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20190115413A1

    公开(公告)日：2019-04-18

    申请号：US16053320

    申请日：2018-08-02

    Applicant: JOLED INC.

    Inventor： Kenji KOKUDA ,  Masafumi MATSUI ,  Hitoshi TSUGE ,  Takashi OSAKO ,  Shigeo HOMURA ,  Ryoichi YASUDA

    IPC: H01L27/32 ,  G09G3/3233

    Abstract: A display panel includes a contact area which includes an upper conductive layer forming first electrodes of the organic EL elements, a lower conductive layer disposed below the upper conductive layer, a middle layer between the upper conductive layer and the lower conductive layer, and an insulating layer between the lower conductive layer and the middle layer. The middle layer includes a first area and a second area which are conductive and electrically connected to the upper conductive layer, and an insulating separating area which separates the first area and the second area. The lower conductive layer includes a first line which is electrically connected to the first area via a first contact hole, and a second line which is electrically connected to the second area via a second contact hole.

    EL DISPLAY APPARATUS
    3.
    发明申请
    EL DISPLAY APPARATUS 审中-公开

    公开(公告)号：US20180277038A1

    公开(公告)日：2018-09-27

    申请号：US15992477

    申请日：2018-05-30

    Applicant: JOLED INC.

    Inventor： Hiroshi TAKAHARA ,  Hitoshi TSUGE

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

    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.

    DISPLAY DEVICE
    4.
    发明申请
    DISPLAY DEVICE 审中-公开

    公开(公告)号：US20170287401A1

    公开(公告)日：2017-10-05

    申请号：US15471067

    申请日：2017-03-28

    Applicant: JOLED INC.

    Inventor： Masafumi MATSUI ,  Hitoshi TSUGE ,  Kohei EBISUNO

    IPC: G09G3/3258

    CPC classification number: G09G3/3258 ,  G06F3/1423 ,  G09G3/3233 ,  G09G5/003 ,  G09G5/14 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/08 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2320/045 ,  G09G2320/066

    Abstract: A plurality of pixel circuits included in a display device each includes: a drive transistor; a capacitor connected to a gate electrode and a source electrode of the drive transistor; a light-emitting element which is driven by the drive transistor; a write transistor having a gate electrode connected to a write control line for transmitting a write signal, one of a drain electrode and a source electrode connected to a data line for transmitting a data voltage corresponding to luminance, and the other of the drain electrode and the source electrode connected to the gate electrode of the drive transistor; and a compensation transistor having a gate electrode connected to the data line, and at least one of a drain electrode and a source electrode connected to the write control line, the compensation transistor being of same conductivity type as the write transistor.

    POWER OFF METHOD OF DISPLAY DEVICE, AND DISPLAY DEVICE
    7.
    发明申请
    POWER OFF METHOD OF DISPLAY DEVICE, AND DISPLAY DEVICE 审中-公开
    显示装置的断电方法和显示装置

    公开(公告)号：US20160260378A1

    公开(公告)日：2016-09-08

    申请号：US15032147

    申请日：2014-07-23

    Applicant: JOLED INC.

    Inventor： Hitoshi TSUGE

    IPC: G09G3/3233

    CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2330/02 ,  G09G2330/027

    Abstract: A power off method of a display device includes: detecting a power off operation on the display device; setting, when the power off operation is detected, a voltage for suppressing electrical stress on a drive transistor, in a capacitance element in each of a plurality of pixel circuits; and stopping power supply to a display panel immediately after the voltage is set.

    Abstract translation: 显示装置的断电方法包括：检测显示装置上的断电操作; 在多个像素电路中的每一个的电容元件中设置检测到电源关闭操作时的电压，用于抑制驱动晶体管上的电应力的电压; 并且在电压设定之后立即停止向显示面板供电。

    CONTROL METHOD OF DISPLAY DEVICE, AND DISPLAY DEVICE
    8.
    发明公开
    CONTROL METHOD OF DISPLAY DEVICE, AND DISPLAY DEVICE 审中-公开

    公开(公告)号：US20230410747A1

    公开(公告)日：2023-12-21

    申请号：US18334930

    申请日：2023-06-14

    Applicant: JOLED INC.

    Inventor： Hiroshi FUJIMURA ,  Hitoshi TSUGE

    IPC: G09G3/3233

    CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2300/0413 ,  G09G2320/0247

    Abstract: A control method is a method of a display device including a plurality of pixel circuits. Each of the pixel circuits includes a light emitting element, a drive transistor, and a pixel capacitance. The drive transistor includes a gate and a source. A frame period includes a first subframe period and at least one second subframe period. In the first subframe period, the control method includes: (A) applying a first initialization potential to the source; (B) writing a signal into the pixel capacitance; and (C) causing the light emitting element to emit light. In each of the at least one second subframe period, the control method includes: (D) maintaining the light emitting element in a non-emission state; (E) applying a second initialization potential to the source in (D); and (F) causing the light emitting element to emit light.

    PIXEL CIRCUIT DRIVING METHOD, PIXEL CIRCUIT, AND DISPLAY DEVICE
    9.
    发明申请
    PIXEL CIRCUIT DRIVING METHOD, PIXEL CIRCUIT, AND DISPLAY DEVICE 有权

    公开(公告)号：US20220114961A1

    公开(公告)日：2022-04-14

    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.

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