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:
May. 21, 1996
Filed:
Sep. 19, 1994
Applicant:
Inventors:
Assignees:
Pioneer Electronic Corporation, Tokyo, JP;
Nippon Kayaku Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B32B / ;
U.S. Cl.
CPC ...
428690 ; 428457 ; 428691 ; 428704 ; 428917 ; 313502 ; 313504 ; 313506 ;
Abstract
An organic electroluminescent device comprises an anode, a positive-hole transport layer, an emitting layer, (an electron transport layer) and a cathode which are layered in sequence, wherein the emitting layer (and/or the electron transport layer) comprises at least one of dioxazine compounds or diazine compounds. The emitting capability of the organic electroluminescent device is improved in luminance and efficiency upon application of a low voltage.