The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 25, 2006
Filed:
Nov. 27, 2002
Masato Tanaka, Machida, JP;
Yoshikazu Makioka, Tsukuba, JP;
Toshihiro Ohnishi, Nakano, JP;
Tomoyuki Suzuki, Tsukuba, JP;
Shuji Doi, Tsukuba, JP;
Masato Tanaka, Machida, JP;
Yoshikazu Makioka, Tsukuba, JP;
Toshihiro Ohnishi, Nakano, JP;
Tomoyuki Suzuki, Tsukuba, JP;
Shuji Doi, Tsukuba, JP;
Sumitomo Chemical Company, Limited, Osaka, JP;
National Institute of Advanced Industrial Science and Technology, Tokyo, JP;
Abstract
An electroluminescent device comprising electrodes consisting of a pair of an anode and a cathode, at least one of the electrodes being either transparent or translucent, and an organic layer interposed between said electrodes, wherein said organic layer comprises a copolymer comprising in the main chain thereof 9-oxo-9-phosphafluorene-2,7-diyl units and arylene units, represented by formula (1) below, and the thickness of said organic layer is from 1 nm to 10 μm:wherein R represents hydrogen, alkyl, cycloalkyl, aralkyl, aryl, alkyloxy, cycloalkyloxy, aralkyloxy, or aryloxy; Ar represents arylene; and n is an integer of 3 to 30,000.