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    ELEMENT SUBSTRATE AND LIGHT EMITTING DEVICE
    21.
    发明申请
    ELEMENT SUBSTRATE AND LIGHT EMITTING DEVICE 有权
    元件基板和发光装置

    公开(公告)号：US20130193424A1

    公开(公告)日：2013-08-01

    申请号：US13804538

    申请日：2013-03-14

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Mitsuaki Osame ,  Aya Anzai ,  Yu Yamazaki

    IPC: H01L27/28 ,  H01L51/52

    CPC classification number: H01L27/326 ,  G09G3/2022 ,  G09G3/3233 ,  G09G2300/0417 ,  G09G2300/0842 ,  G09G2300/0885 ,  G09G2310/0251 ,  H01L27/283 ,  H01L29/78672 ,  H01L51/5012 ,  H01L51/5296

    Abstract: A light emitting device and an element substrate which are capable of suppressing variations in the luminance intensity of a light emitting element among pixels due to characteristic variations of a driving transistor without suppressing off-current of a switching transistor low and increasing storage capacity of a capacitor. According to the invention, a depletion mode transistor is used as a driving transistor. The gate of the driving transistor is fixed in its potential or connected to the source or drain thereof to operate in a saturation region with a constant current flow. A current controlling transistor which operates in a linear region is connected in series to the driving transistor, and a video signal for transmitting a light emission or non-emission of a pixel is inputted to the gate of the current controlling transistor through a switching transistor.

    Abstract translation: 一种发光器件和元件衬底，其能够抑制由于驱动晶体管的特性变化而导致的像素之中的发光元件的亮度强度的变化，而不会抑制开关晶体管的截止电流低并且增加电容器的存储容量 。 根据本发明，使用耗尽型晶体管作为驱动晶体管。 驱动晶体管的栅极固定在其电位或连接到其源极或漏极，以在具有恒定电流的饱和区域中工作。 在线性区域中工作的电流控制晶体管与驱动晶体管串联连接，并且用于透射像素的发光或不发光的视频信号通过开关晶体管输入到电流控制晶体管的栅极。

    Element substrate and light emitting device
    23.
    发明授权
    Element substrate and light emitting device 有权

    公开(公告)号：US11189223B2

    公开(公告)日：2021-11-30

    申请号：US16881046

    申请日：2020-05-22

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Yu Yamazaki ,  Aya Anzai ,  Mitsuaki Osame

    IPC: G09G3/3233 ,  G09G3/3266 ,  G09G3/20 ,  G09G3/3291 ,  F21V23/00 ,  F21V23/06 ,  H01L27/32 ,  H01L51/52 ,  H01L27/12 ,  H01L29/786

    Abstract: A light emitting device and an element substrate which are capable of suppressing variations in luminance intensity of a light emitting element among pixels due to characteristic variations of a driving transistor without suppressing off-current of a switching transistor low and increasing storage capacity of a capacitor. A gate potential of a driving transistor is connected to a first scan line or a second scan line, and the driving transistor operates in a saturation region. A current controlling transistor which operates in a linear region is connected in series to the driving transistor. A video signal which transmits a light emission or non-emission of a pixel is input to the gate of the current controlling transistor through a switching transistor.

    Semiconductor device having a rectifying element connected to a pixel of a display device
    27.
    发明授权
    Semiconductor device having a rectifying element connected to a pixel of a display device 有权
    具有连接到显示装置的像素的整流元件的半导体装置

    公开(公告)号：US09536937B2

    公开(公告)日：2017-01-03

    申请号：US14532478

    申请日：2014-11-04

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Hajime Kimura ,  Yu Yamazaki

    IPC: G09G3/32 ,  H01L27/32 ,  H01L27/06 ,  H01L27/12

    CPC classification number: G09G3/3283 ,  G09G3/325 ,  G09G2300/0842 ,  G09G2300/0861 ,  G09G2310/0262 ,  G09G2320/0209 ,  G09G2320/0233 ,  H01L27/0629 ,  H01L27/1255 ,  H01L27/3276

    Abstract: When writing a signal current from a current source to a current source circuit, noise occurs in some cases in a wiring through which a current flows, which may cause a potential of the wiring to be outside the normal range. As the potential does not turn back within the normal range easily at this time, writing to the current source circuit is delayed. According to the invention, when the potential becomes outside the normal range due to noise occurring in a wiring through which a current flows when writing a signal current from a current source to a current source circuit, a current is supplied from other than the current source, thereby the potential of the wiring can turn back within the normal range rapidly.

    Abstract translation: 当将来自电流源的信号电流写入电流源电路时，在某些情况下，在电流流动的布线中会发生噪声，这可能导致布线的电位超出正常范围。 由于此时电位不能在正常范围内容易地回退，所以写入电流源电路会延迟。 根据本发明，当从电流源向电流源电路写入信号电流时，由于在电流流过的布线中发生的噪声，当电位超出正常范围时，电流从电流源 因此布线的电位可以迅速回到正常范围内。

    Light Emitting Device
    30.
    发明申请
    Light Emitting Device 审中-公开
    发光装置

    公开(公告)号：US20130176196A1

    公开(公告)日：2013-07-11

    申请号：US13781808

    申请日：2013-03-01

    Applicant: Semiconductor Energy Laboratory Co., Ltd.

    Inventor： Yu Yamazaki ,  Aya Anzai ,  Tomoyuki Iwabuchi

    IPC: H01L33/46 ,  G09G3/32

    CPC classification number: H01L33/46 ,  G09G3/32 ,  H01L27/3267

    Abstract: The invention provides a light emitting device which is capable of displaying on both sides, has a small volume, and is capable of being used as a module. A light emitting element represented by an EL element and the like is used in a pixel portion, and two pixel portions are provided in one light emitting device. A first pixel portion has a structure to emit light only from a counter electrode side of the light emitting element. A second pixel portion has a structure to emit light only from a pixel electrode side of the light emitting element. That is, in the first pixel portion and the second pixel portion, directions of light emission are reverse in front and back.

    Abstract translation: 本发明提供一种能够在两面显示具有小体积并且能够用作模块的发光装置。 在像素部分中使用由EL元件等表示的发光元件，并且在一个发光器件中设置两个像素部。 第一像素部分具有仅从发光元件的对电极侧发光的结构。 第二像素部分具有仅从发光元件的像素电极侧发光的结构。 也就是说，在第一像素部分和第二像素部分中，发光方向正面和背面相反。

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