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    Pixel circuit
    13.
    发明授权
    Pixel circuit 有权

    公开(公告)号：US11502150B2

    公开(公告)日：2022-11-15

    申请号：US17165143

    申请日：2021-02-02

    Applicant: Japan Display Inc.

    Inventor： Tetsuo Morita ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Tabatake ,  Yasuhiro Ogawa

    IPC: H01L27/32 ,  H01L27/12 ,  H01L29/417 ,  H01L29/786

    Abstract: Provided is a display device including a plurality of pixels at least one of which has a first transistor and a light-emitting element. The first transistor includes a gate electrode, a gate insulating film over the gate electrode, an oxide semiconductor film over the gate insulating film, and a first terminal and a second terminal electrically connected to the semiconductor film. The second terminal is electrically connected to the light-emitting element. A region in which the first terminal overlaps with the gate electrode can be smaller than a region in which the second terminal overlaps with the gate electrode.

    Driving method for display device
    14.
    发明授权
    Driving method for display device 有权

    公开(公告)号：US10720102B2

    公开(公告)日：2020-07-21

    申请号：US16248077

    申请日：2019-01-15

    Applicant: Japan Display Inc.

    Inventor： Yutaka Umeda ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Tetsuo Morita

    IPC: G09G3/3233 ,  G09G3/3258 ,  G09G3/3266 ,  H01L27/32

    Abstract: A display device includes a drive transistor having a first electrode connected to a first node, a second electrode connected to a second node, and a third electrode connected to a third node, a first switch having one terminal connected to the first node, a second switch having one terminal connected to the first node, a third switch controlled by a first control signal and having one terminal connected to the second node, a fourth switch controlled by the first control signal together with the third switch, and having one terminal connected to a power supply line and another terminal connected to the third node, a capacitor element having one terminal connected to the first node and another terminal connected to the second node, and a light emitting element including a pixel electrode connected to the second node, and a first common electrode.

    Display device
    15.
    发明授权
    Display device 有权

    公开(公告)号：US10304386B2

    公开(公告)日：2019-05-28

    申请号：US16177513

    申请日：2018-11-01

    Applicant: Japan Display Inc.

    Inventor： Yasuhiro Ogawa ,  Hiroshi Tabatake ,  Hiroyuki Kimura ,  Tetsuo Morita ,  Makoto Shibusawa

    IPC: G09G3/3233 ,  G02F1/1362 ,  G09G3/20 ,  G09G3/3258 ,  G02F1/1343 ,  H01L27/32 ,  G02F1/136

    Abstract: A display device includes a switching element having a first input/output terminal electrically connected to a first signal line, a first wiring electrically connected to a second input/output terminal of the switching element, a transistor having a gate electrode connected to the first wiring, a second wiring electrically connected to a source or drain of the transistor, a pixel electrode connected to the second wiring, a first insulating layer which is arranged between the first wiring and the second wiring and is arranged between the first wiring and the pixel electrode, a second insulating layer between the first insulating layer and pixel electrode, and a conducting layer between the first insulating layer and the second insulating layer, the conducting layer including a region overlapping the pixel electrode. The conducting layer includes a dividing groove dividing the conducting layer into a plurality of regions at a region overlapping the pixel electrode.

    Display device and driving method thereof
    16.
    发明授权
    Display device and driving method thereof 有权

    公开(公告)号：US10121413B2

    公开(公告)日：2018-11-06

    申请号：US14858348

    申请日：2015-09-18

    Applicant: Japan Display Inc.

    Inventor： Tetsuo Morita ,  Hiroyuki Kimura ,  Makoto Shibusawa ,  Hiroshi Nakayama ,  Hiroshi Tabatake ,  Yutaka Umeda

    IPC: G09G3/3233

    Abstract: A flash phenomenon of OLEDs at the time of power source ON of a display device is suppressed. The OLED emits light when reference potentials VSS and VDD are applied from power source lines to the OLED's cathode and anode respectively. While the anode can be connected to one of the power source line via a driving TFT and a lighting switch, a reset potential VRS can be applied to the anode via a reset switch and the driving TFT. The lighting switch is turned OFF and the reset switch and the driving TFT are turned ON so that VRS is applied to the anode, before starting the application of the reference potentials to the power source lines. Following this state, the application of the reference potentials to the power source lines starts, and thus a normal operation of allowing the OLED to emit light starts.

    Method of driving a display device
    17.
    发明授权
    Method of driving a display device 有权

    公开(公告)号：US09858861B2

    公开(公告)日：2018-01-02

    申请号：US15016011

    申请日：2016-02-04

    Applicant: Japan Display Inc.

    Inventor： Yutaka Umeda ,  Duzen Peng ,  Ilin Wu ,  Makoto Shibusawa ,  Hiroyuki Kimura

    IPC: G06F3/038 ,  G09G5/00 ,  G09G3/3233

    CPC classification number: G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0254 ,  G09G2320/0214

    Abstract: A method of driving a display device with a plurality of pixels including a video signal wire, a first power supply wire supplied with a first potential, a second power supply wire supplied with a second potential different to the first potential, a light emitting element arranged between the first power supply wire and the second power supply wire, a drive transistor controlling a value of a current supplied to the light emitting element, and a switch arranged between the video signal wire and the drive transistor, and inputting a signal of the video signal wire to a gate terminal of the drive transistor, wherein a minimum gradation level potential is supplied to the video signal wire after a video signal is written to the capacitor of an Nth row pixel until a video signal is written to the capacitor of an Mth (N

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