Invention Grant
- Patent Title: Light-emitting device comprising films having different optical path lengths
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Application No.: US14710115Application Date: 2015-05-12
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Publication No.: US09755001B2Publication Date: 2017-09-05
- Inventor: Satoshi Seo , Nobuharu Ohsawa , Toshiki Sasaki
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- Applicant Address: JP Atsugi-shi, Kanagawa-ken
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP Atsugi-shi, Kanagawa-ken
- Agency: Fish & Richardson P.C.
- Priority: JP2014-101116 20140515
- Main IPC: H01L29/20
- IPC: H01L29/20 ; H01L33/00 ; H01L27/32 ; H01L33/40 ; H01L27/15 ; H01L33/44 ; H01L33/42 ; H01L51/50 ; H01L51/52

Abstract:
A light-emitting device includes a first light-emitting element emitting blue light, a second light-emitting element emitting green light, and a third light-emitting element emitting red light. A first reflective electrode and a first transparent conductive film, a second reflective electrode and a second transparent conductive film, and a third reflective electrode and a third transparent conductive film are stacked in the first to third light-emitting elements, respectively. A first light-emitting layer, a charge-generation layer, a second light-emitting layer, and an electrode are stacked in this order over each of the first transparent conductive film, the second transparent conductive film, and the third transparent conductive film. The electrode has functions of transmitting and reflecting light. The first to third reflective electrodes contain silver. The first transparent conductive film is thicker than the third transparent conductive film. The third transparent conductive film is thicker than the second transparent conductive film.
Public/Granted literature
- US20150333229A1 LIGHT-EMITTING ELEMENT, LIGHT-EMITTING DEVICE, ELECTRONIC DEVICE, AND LIGHTING DEVICE Public/Granted day:2015-11-19
Information query
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