Invention Grant
- Patent Title: Light emitting device
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Application No.: US15558173Application Date: 2015-03-16
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Publication No.: US09991461B2Publication Date: 2018-06-05
- Inventor: Akihiro Tanaka
- Applicant: PIONEER CORPORATION
- Applicant Address: JP Tokyo
- Assignee: PIONEER CORPORATION
- Current Assignee: PIONEER CORPORATION
- Current Assignee Address: JP Tokyo
- Agency: Procopio, Cory, Hargreaves & Savitch LLP
- International Application: PCT/JP2015/057633 WO 20150316
- International Announcement: WO2016/147285 WO 20160922
- Main IPC: H01L29/08
- IPC: H01L29/08 ; H01L35/24 ; H01L51/00 ; H01L51/50 ; H01L51/56

Abstract:
Multiple organic layers (120) are located between a first electrode (110) and a second electrode (130), each organic layer including a light emitting layer. A charge generation layer (200) is located between mutually adjacent organic layers (120). In other words, the multiple organic layers (120) are mutually laminated and the charge generation layer (200) is located between the multiple organic layers (120). The charge generation layer (200) includes a first layer, a second layer, and a third layer. The first layer contains an electron transport material and the second layer contains a metal and a hole injection material. The third layer is formed using a hole transport material. The charge generation layer (200) contains an electron injection material for improving electron injection properties of the first layer, the charge generation layer provided on the first layer side than the second layer.
Public/Granted literature
- US20180076409A1 LIGHT EMITTING DEVICE Public/Granted day:2018-03-15
Information query
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