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. 30, 2006
Filed:
Feb. 28, 2001
Applicants:
Thomas Jüstel, Aachen, DE;
Wolfgang Busselt, Roetgen, DE;
Hans Nikol, Eindhoven, NL;
Inventors:
Assignee:
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 17/49 (2006.01); H01J 62/04 (2006.01); H01J 1/62 (2006.01);
U.S. Cl.
CPC ...
Abstract
A plasma picture screen provided with a luminescent layer which comprises a blue Eu-activated phosphor and a UV-C light emitting phosphor. The mixing of an UV-C light emitting phosphor with an Eu-activated phosphor or coating of an Eu-activated phosphor with a UV-C light emitting phosphor or coating of a base layer of an Eu-activated phosphor with a covering layer of a UV-C light emitting phosphor clearly reduces the photodegradation of the Eu-activated phosphors in the VUV range.