US Patent 7504657 Organic electroluminescent element, display and illuminator
Patent 7504657 was granted and assigned to Konica Minolta Holdings on March, 2009 by the United States Patent and Trademark Office.
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Patent abstract
An organic electroluminescent element comprising an anode; a cathode; at least two light emission layers provided between the anode and the cathode; and at least one intermediate layer provided between the two light emission layers, wherein the two light emission layers each comprise the same host compound A; one of the two light emission layers comprises light emission dopant A and the other light emission layer comprises light emission dopant B which is different from light emission dopant A; and the intermediate layer comprises host compound A.
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US Patent 07504657 Organic electroluminescent element, display and illuminator US Patent 7504657 Organic electroluminescent element, display and illuminator
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Patent Number
0750465700
Patent Number
750465700
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Current Assignee
Patent Jurisdiction
Patent Number
075046570
Date of Patent
March 17, 2009
0Patent Application Number
116327580
Date Filed
July 13, 2005
0Official Website
Patent Primary Examiner
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Is a
Current Assignee
Patent Jurisdiction
Patent Number
075046570
Date of Patent
March 17, 2009
0Patent Application Number
116327580
Date Filed
July 13, 2005
0Official Website
Patent Primary Examiner
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US Patent 07504657 Organic electroluminescent element, display and illuminator
Infobox
Is a
Current assignee
Patent jurisdiction
Patent number
07504657
Date of patent
March 17, 2009
Patent application number
11632758
Date Filed
July 13, 2005
Patent primary examiner
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