Invention Grant
- Patent Title: Light-emitting element and display device
- Patent Title (中): 发光元件和显示装置
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Application No.: US13718559Application Date: 2012-12-18
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Publication No.: US08643270B2Publication Date: 2014-02-04
- Inventor: Shunpei Yamazaki , Ryoji Nomura , Satoshi Seo , Hiroko Abe , Yasuo Nakamura
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Inc.
- Current Assignee: Semiconductor Energy Laboratory Co., Inc.
- Current Assignee Address: JP
- Agency: Husch Blackwell LLP
- Priority: JP2004-151103 20040520
- Main IPC: H05B33/00
- IPC: H05B33/00

Abstract:
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.
Public/Granted literature
- US20130126936A1 Light-Emitting Element and Display Device Public/Granted day:2013-05-23
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