公开(公告)号：US20130214307A1

公开(公告)日：2013-08-22

申请号：US13852015

申请日：2013-03-28

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Satoshi SEO ,  Daisuke KUMAKI ,  Hisao IKEDA ,  Junichiro SAKATA

IPC: H01L27/15

CPC classification number: H01L27/156 ,  H01L27/322 ,  H01L27/3244 ,  H01L51/0059 ,  H01L51/0071 ,  H01L51/0081 ,  H01L51/5088 ,  H01L2251/5315 ,  H01L2251/558

Abstract: Light-emitting elements have a problem that their light-extraction efficiency is low due to scattered light or reflected light inside the light-emitting elements. The light-extraction efficiency of the light-emitting elements needs to be enhanced by a new method. According to the present invention, a light-emitting element includes a first layer generating holes, a second layer including a light-emitting layer for each emission color and a third layer generating electrons between an anode and a cathode, and the thickness of the first layer is different depending on each layer including the light-emitting layer for each emission color. A layer in which an organic compound and a metal oxide are mixed is used as the first layer, and thus, the driving voltage is not increased even when the thickness is increased, which is preferable.

Abstract translation: 发光元件具有由于发光元件内的散射光或反射光而导致其光提取效率低的问题。 需要通过新的方法来增强发光元件的光提取效率。 根据本发明，发光元件包括第一层产生孔，包括用于每种发射颜色的发光层的第二层和在阳极和阴极之间产生电子的第三层，以及第一层 层根据每个发射颜色的包含发光层的各层而不同。 使用其中混合有机化合物和金属氧化物的层作为第一层，因此即使当厚度增加时驱动电压也不会增加，这是优选的。

公开(公告)号：US20130119358A1

公开(公告)日：2013-05-16

申请号：US13676400

申请日：2012-11-14

Applicant: Semiconductor Energy Laboratory Co., Ltd.

Inventor： Takeru Sasaki ,  Tomoya AOYAMA ,  Hisao IKEDA

IPC: H01L51/52

CPC classification number: H01L51/529 ,  H01L51/5243

Abstract: Provided is a light-emitting device having a light-emitting portion having a light-emitting element in a space surrounded by a support substrate, a metal substrate, and a sealing material, in which the sealing material is provided to surround the periphery of the light-emitting portion, the light-emitting element has a first electrode, a layer having a light-emitting organic compound, and a second electrode, the support substrate and the first electrode are each capable of transmitting light emitted from the light-emitting organic compound, and the space contains gas inert to the light-emitting element or is in a vacuum. The light-emitting device has, over the second electrode, a first high-emissivity layer that has higher emissivity than the second electrode and is thermally connected to the second electrode, and a low-reflectivity layer with which a metal substrate surface facing the support substrate is provided and which has lower reflectivity than the metal substrate.

Abstract translation: 本发明提供一种发光装置，其具有发光部，该发光部在由支撑基板，金属基板和密封材料围绕的空间内具有发光元件，所述密封材料设置在所述发光元件的周围， 发光部分，发光元件具有第一电极，具有发光有机化合物的层和第二电极，支撑基板和第一电极都能够透射从发光有机物发射的光 并且该空间包含对发光元件惰性的气体或处于真空状态。 发光装置在第二电极上具有比第二电极具有更高的发射率并且热连接到第二电极的第一高发射层，以及低反射率层，金属基板表面面向支撑体 提供了基板，并且其具有比金属基板更低的反射率。