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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.:

US 6326091 B1

PDFFull Text
Date of Patent:
Dec. 04, 2001

Filed:

Apr. 24, 1997

Organic electroluminescent device

Applicant:
Inventors:

Hermannus F. M. Schoo, Eindhoven, NL;

Robert J. C. E. Demandt, Eindhoven, NL;

Jeroen J. M. Vleggaar, Eindhoven, NL;

Coen T. H. F. Liedenbaum, Eindhoven, NL;

Assignee:

U. S. Philips Corporation, New York, NY (US);

Attorney:

Aaron Waxler

Primary Examiner:

Marie Yamnitzky

Int. Cl.
CPC ...
H05B 3/314 ;
U.S. Cl.
CPC ...
H05B 3/314 ;
Abstract

An organic electroluminescent device whose electroluminescence efficiency is independent of the work function of the cathode material, and whose service life under ambient conditions is excellent without the necessity of taking additional protective measures. These properties are obtained as a result of the fact that an organic layer of the device comprises mobile ions which are compensated by immobile ions in such a manner than the polarity of all mobile ions is the same.

Find Patent Forward Citations

Schoo, Hermannus F. M.. (2001). Organic electroluminescent device (U.S. Patent No. 6326091). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6326091

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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