- Patent Title: Light-emitting element including EL layer, electrode which has high reflectance and a high work function, display device, electronic device, and lighting device
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Application No.: US14932343Application Date: 2015-11-04
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Publication No.: US10680017B2Publication Date: 2020-06-09
- Inventor: Shogo Uesaka , Toshiki Sasaki , Nobuharu Ohsawa , Satoshi Seo
- Applicant: Semiconductor Energy Laboratory Co., Ltd.
- 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: com.zzzhc.datahub.patent.etl.us.BibliographicData$PriorityClaim@6b0f346a
- Main IPC: H01L27/12
- IPC: H01L27/12 ; H01L51/52 ; H01L51/50 ; H01L27/32

Abstract:
A light-emitting element including a first electrode, a second electrode, and an EL layer provided between the first and second electrodes is provided. The first electrode includes a conductive layer, a first transparent conductive layer in contact with the conductive layer, and a second transparent conductive layer in contact with the first transparent conductive layer. The first transparent conductive layer contains a first oxide. The second transparent conductive layer contains a second oxide. The conductive layer has a function of reflecting light. The first oxide contains In and M (M represents Al, Si, Ti, Ga, Y, Zr, La, Ce, Nd, or Hf). The second oxide contains In. The resistivity of the second transparent conductive layer is lower than that of the first transparent conductive layer. The thickness of the second transparent conductive layer is greater than or equal to that of the first transparent conductive layer.
Public/Granted literature
- US20160133878A1 Light-Emitting Element, Light-Emitting Device, Display Device, Electronic Device, and Lighting Device Public/Granted day:2016-05-12
Information query
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