Light emitting device and image playback device having triplet and singlet compounds in electroluminescent layer | Patent Number 07372199

US 07372199 B2
Application Number11727309
Publication NumberUS 20070170853 A1
Pendency1 year, 1 month, 19 days
Filled DateMar 26, 2007
Priority DateAug 24, 2001
Publication DateJul 26, 2007
Expiration DateAug 24, 2021
Inventor/ApplicantsHisao Ikeda
Mayumi Mizukami
Shunpei Yamazaki
Takeshi Nishi
ExaminesROY, SIKHA
Art Unit2879
Technology Center2800
Assignments
Semiconductor Energy Laboratory
Current
Semiconductor Energy Laboratory
Original
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