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:
Jan. 21, 2003
Filed:
Oct. 27, 2000
Thomas Jüstel, Aachen, DE;
Hans Nikol, Aachen, DE;
Helmut Bechtel, Roetgen, DE;
Cornelis Reinder Ronda, Aachen, DE;
Koninklijke Philips Electronics N.V., Eindhoven, NL;
Abstract
A plasma display screen including a carrier plate, a transparent front plate, a ribbed structure which divides the space between the carrier plate and the front plate into plasma cells, which are filled with a gas, and including one or more electrode arrays for generating corona discharges in the plasma cells, and including a phosphor layer which includes a phosphor for generating red radiation selected from the group formed by rare earth metal borates of the general formula EA M M Eu B O , where EA=Ca, Sr, Ba; M =Gd, La; M =Y, Lu, Sc, In and 0<x≦0.5, 0.01≦y≦0.4, and M Y Eu BO , where M =Sc,, In, Lu and 0.01≦r≦0.99, 0.01≦s≦0.15, is characterized by a red point which has shifted in the direction of a higher color saturation. In addition, the color contrast at brighter ambient lighting conditions is increased.