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:
Jun. 03, 2003
Filed:
Dec. 19, 2000
Applicant:
Inventors:
Assignee:
Koninkiljke Phillips Electronics N.V., Eindhoven, NL;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J 1/700 ; C09K 1/179 ; C09K 1/186 ; C09K 1/177 ;
U.S. Cl.
CPC ...
H01J 1/700 ; C09K 1/179 ; C09K 1/186 ; C09K 1/177 ;
Abstract
A plasma picture screen fitted with a phosphor layer comprising a red phosphor activated by Eu shows an improved red color point (x≧0.64 and y≦0.35) and shorter decay times &tgr; as compared with the standard phosphor (Y,Gd)BO . The phosphor according to the invention has a lattice in which the activator Eu occupies a location which has no inversion symmetry.