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:
Jul. 13, 2004
Filed:
Aug. 30, 2001
Applicant:
Inventors:
Hans-Helmut Bechtel, Roetgen, DE;
Wolfgang Busselt, Roetgen, DE;
Thomas Juestel, Aachen, DE;
Martin Weibrecht, Aachen, DE;
Peter Quadflieg, Aachen, DE;
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/62 ; H01J 6/304 ; H01J 6/144 ;
U.S. Cl.
CPC ...
H01J 1/62 ; H01J 6/304 ; H01J 6/144 ;
Abstract
The invention relates to a color picture screen with an improved blue light emission. The blue phosphor layer comprises a first blue-emitting phosphor and a second phosphor which shows a light emission in the range from 380 to 450 nm.