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:
Jan. 11, 2000
Filed:
Jan. 22, 1998
Junji Kido, Kitakatsuragi-gun, Nara-ken, JP;
Tokio Mizukami, Kanagawa-ken, JP;
Other;
International Manufacturing and Engineering Services Co., Ltd., Kanagawa-ken, JP;
Abstract
An organic electroluminescent (EL) device includes at least one luminescent layer having an organic compound doped with a metal capable of acting as a donor dopant, in adjacent to a cathode electrode. The EL device ensures a diminished energy barrier in an electron injection from the cathode electrode into the luminescent layer, i.e., metal-doped organic compound layer, and thus a lowered driving voltage. The lowered driving voltage can be obtained regardless of the work function of the cathode material.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile