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    • 10. 发明申请
    • Light-Emitting Element and Display Device
    • 发光元件和显示设备
    • US20120061653A1
    • 2012-03-15
    • US13229918
    • 2011-09-12
    • Shunpei YamazakiRyoji NomuraSatoshi SeoHiroko AbeYasuo Nakamura
    • Shunpei YamazakiRyoji NomuraSatoshi SeoHiroko AbeYasuo Nakamura
    • H01L51/50
    • H01L33/42H01L27/3209H01L51/5088H01L51/5092H01L51/5278H01L2924/0002H01L2924/00
    • When a light-emitting element having an intermediate conductive layer between a plurality of light-emitting layers is formed, the intermediate conductive layer can have transparency; and thus, materials are largely limited and the manufacturing process of an element becomes complicated by a conventional method. A light-emitting element according to the present invention is formed by sequentially stacking a pixel electrode, a first light-emitting layer, an intermediate conductive layer (including an electron injecting layer and a hole-injecting layer, one of which is island-like), a second light-emitting layer and an opposite electrode. Therefore, the present invention can provide a light-emitting element typified by an organic EL element in which a range of choice of materials that can be used as the intermediate conductive layer is broadened extremely, and which can realize a high light-emitting efficiency, a low power consumption and a high reliability, and further a display device using the light-emitting element.
    • 当形成具有在多个发光层之间的中间导电层的发光元件时,中间导电层可以具有透明性; 因此材料受到很大限制,并且通过常规方法使元件的制造过程变得复杂。 根据本发明的发光元件通过顺序堆叠像素电极,第一发光层,中间导电层(包括电子注入层和空穴注入层,其中之一是岛状的 ),第二发光层和相对电极。 因此,本发明可以提供一种以有机EL元件为代表的发光元件,其中可以用作中间导电层的材料的选择范围极大,可以实现高的发光效率, 低功耗和高可靠性,以及使用该发光元件的显示装置。