Invention Grant
- Patent Title: Organic electroluminescence display device
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Application No.: US12216788Application Date: 2008-07-10
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Publication No.: US08344613B2Publication Date: 2013-01-01
- Inventor: Masahiro Tanaka
- Applicant: Masahiro Tanaka
- Applicant Address: JP Chiba-ken JP Hyogo-ken
- Assignee: Hitachi Displays Ltd.,Panasonic Liquid Crystal Display Co., Ltd.
- Current Assignee: Hitachi Displays Ltd.,Panasonic Liquid Crystal Display Co., Ltd.
- Current Assignee Address: JP Chiba-ken JP Hyogo-ken
- Agency: Stites & Harbison, PLLC
- Agent Juan Carlos A. Marquez, Esq.; Nicholas B. Trenkle
- Priority: JP2007-183284 20070712
- Main IPC: H01J1/62
- IPC: H01J1/62

Abstract:
The invention provides an organic electroluminescence display device that makes it possible to obtain a highly reliable display. The organic electroluminescence display device has an organic electroluminescence element that includes a first layer (3) that contains a first substance that exhibits electron transport properties, and a second substance that exhibits electron-donating properties with respect to the first substance; a second layer (4) that is composed of a third substance that exhibits hole transport properties; a third layer (light-emitting layer (5) that contains a light-emitting substance; and a fourth layer (6) that is formed from a substance that exhibits electron transport properties.
Public/Granted literature
- US20090026941A1 Organic electroluminescence display device Public/Granted day:2009-01-29
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