Invention Grant
- Patent Title: Light-emitting element, light-emitting device, and display device
- Patent Title (中): 发光元件,发光元件及显示元件
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Application No.: US13368872Application Date: 2012-02-08
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Publication No.: US09000458B2Publication Date: 2015-04-07
- Inventor: Satoshi Seo , Toshiki Sasaki , Nobuharu Ohsawa , Takahiro Ushikubo , Shunpei Yamazaki
- Applicant: Satoshi Seo , Toshiki Sasaki , Nobuharu Ohsawa , Takahiro Ushikubo , Shunpei Yamazaki
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP
- Agency: Husch Blackwell LLP
- Priority: JP2011-027960 20110211
- Main IPC: H01L29/20
- IPC: H01L29/20 ; H01L21/00 ; H01L51/50 ; H01L51/52

Abstract:
A light-emitting element with which a reduction in power consumption and an improvement in productivity of a display device can be achieved is provided. A technique of manufacturing a display device with high productivity is provided. The light-emitting element includes an electrode having a reflective property, and a first light-emitting layer, a charge generation layer, a second light-emitting layer, and an electrode having a light-transmitting property stacked in this order over the electrode having a reflective property. The optical path length between the electrode having a reflective property and the first light-emitting layer is one-quarter of the peak wavelength of the emission spectrum of the first light-emitting layer. The optical path length between the electrode having a reflective property and the second light-emitting layer is three-quarters of the peak wavelength of the emission spectrum of the second light-emitting layer.
Public/Granted literature
- US20120205685A1 Light-Emitting Element, Light-Emitting Device, and Display Device Public/Granted day:2012-08-16
Information query
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