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

    公开(公告)号：US20200235182A1

    公开(公告)日：2020-07-23

    申请号：US16844007

    申请日：2020-04-09

    Applicant: Japan Display Inc.

    Inventor： Jun TAKAGI

    IPC: H01L27/32 ,  H01L51/50

    Abstract: A display device according to an embodiment of the present invention includes: a substrate; a first organic light-emitting diode including a first lower electrode provided above the substrate and for each pixel, a first organic layer provided above the first lower electrode, a first light-emitting layer provided within the first organic layer and for each pixel and including a thermally activated material, and an upper electrode provided above the first organic layer; and a first drive TFT provided between the substrate and the first organic light-emitting diode, connected to the first lower electrode, and arranged overlapping the first light-emitting layer as viewed in a plan view.

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

    公开(公告)号：US20180138437A1

    公开(公告)日：2018-05-17

    申请号：US15810209

    申请日：2017-11-13

    Applicant: Japan Display Inc.

    Inventor： Jun TAKAGI

    IPC: H01L51/50 ,  H01L27/32

    CPC classification number: H01L51/5012 ,  H01L27/3237 ,  H01L27/3244 ,  H01L51/5024 ,  H01L51/5092

    Abstract: An electroluminescence display device includes a first pixel electrode; a second pixel electrode provided in the same layer as the first pixel electrode; a counter electrode provided on the first pixel electrode and the second pixel electrode; a first organic light emitting layer provided between the first pixel electrode and the counter electrode, the first organic light emitting layer emitting light having a first wavelength; and a second organic light emitting layer provided between the second pixel electrode and the counter electrode, the second organic light emitting layer emitting light having a second wavelength. The first light emitting layer contains a host material, a first dopant material and a first assist dopant material; and the second light emitting layer contains the host material, a second dopant material and a second assist dopant material.

    ELECTROLUMINESCENCE DEVICE AND MANUFACTURING METHOD THEREOF
    5.
    发明申请
    ELECTROLUMINESCENCE DEVICE AND MANUFACTURING METHOD THEREOF 有权
    电致发光器件及其制造方法

    公开(公告)号：US20150060820A1

    公开(公告)日：2015-03-05

    申请号：US14471025

    申请日：2014-08-28

    Applicant: Japan Display Inc.

    Inventor： Jun TAKAGI ,  Toshihiro SATO

    IPC: H01L51/52 ,  H01L51/00 ,  H01L51/56 ,  H01L51/50 ,  H01L27/32

    CPC classification number: H01L51/0021 ,  H01L27/3246 ,  H01L51/5209 ,  H01L51/5218

    Abstract: Light emitted within an organic EL device is effectively utilized, and a pixel is provided for improving the extraction efficiency of the light. Light extraction is efficiency is improved without increasing a current by effectively utilizing guided wave light which is a cause of the loss of light emitted by an organic EL device. In order to achieve this, a stepped portion is arrange in an insulating layer provided over a lower layer of a first electrode including a light reflecting surface, and a peripheral area of the first electrode is formed so as to contact the stepped portion. The reflecting surface is formed curved towards a second electrode side in the peripheral area of the first electrode from the stepped portion, light guided through the organic EL layer is reflected by the reflecting surface and emitted from the second electrode side.

    Abstract translation: 有效地利用在有机EL器件内发射的光，并且提供用于提高光的提取效率的像素。 通过有效地利用作为有机EL元件发出的光的损失的原因的导波光而不增加电流，提高光提取效率。 为了实现这一点，在设置在包括光反射表面的第一电极的下层上的绝缘层中布置有阶梯部分，并且形成第一电极的周边区域以与台阶部分接触。 反射面从阶梯部向第一电极的周边区域朝向第二电极侧弯曲，由有机EL层引导的光被反射面反射并从第二电极侧发射。

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