Invention Grant
- Patent Title: Electroluminescence element and a light emitting device using the same
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Application No.: US11416331Application Date: 2006-05-02
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Publication No.: US07642713B2Publication Date: 2010-01-05
- Inventor: Satoshi Seo , Hiroko Yamazaki
- Applicant: Satoshi Seo , Hiroko Yamazaki
- Applicant Address: JP
- Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
- Current Assignee Address: JP
- Agency: Cook Alex Ltd.
- Priority: JP2002-233758 20020809
- Main IPC: H01J1/62
- IPC: H01J1/62

Abstract:
An EL element which is thicker and lower-voltage drive without doping acceptor or donor than the conventional one. An EL element in which an electroluminescent film 103 containing an organic compound which can provide electroluminescent, a floating electrode 104, an electron transport supporting layer 105 and a cathode 102 are in order laminated on an anode 101. A film thickness of the electroluminescent film 103 is on the order of a conventional film thickness (on the order of approximately 100 nm), and the electron transport supporting layer 105 may also have a film thickness on the order of the electroluminescent film 103. The EL element can be driven at lower voltage than the conventional one by introducing a hole blocking material into an electron transport supporting layer.
Public/Granted literature
- US07737630B2 Electroluminescence element and a light emitting device using the same Public/Granted day:2010-06-15
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