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 6806639 B1

PDF
Full Text
Expired
Date of Patent:
Oct. 19, 2004

Filed:

Jul. 30, 2002
Applicant:
Inventors:

Alexey N. Krasnov, Brampton, CA;

Peter Hofstra, Guelph, CA;

Richard P. Wood, Delhi, CA;

Assignee:

Luxell Technologies, Inc., Mississauga, CA;

Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/62 ;
U.S. Cl.
CPC ...
H01J 1/62 ;
Abstract

An electroluminescent device having high-contrast and/or high-reliability is provided. The electroluminescent device comprises a pair of electrodes—at least one of which is transparent to electroluminescent light, and a phosphor layer which is disposed between the electrodes. The phosphor layer has a host crystal lattice, a first dopant and a second dopant. The first dopant cooperates with the host crystal lattice to cause light emission when a voltage is applied across the pair of electrodes, and the second dopant further distributes the first dopant in the host crystal lattice to increase light emission from the phosphor layer.


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Krasnov, Alexey. (2004). Thin film electroluminescent device (U.S. Patent No. 6806639). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6806639

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