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:
Aug. 31, 2010
Filed:
Jun. 17, 2008
Applicants:
Hitoshi Oaku, Tokyo, JP;
Hirotaka Sakuma, Kokubunji, JP;
Choichiro Okazaki, Kodaira, JP;
Inventors:
Assignee:
Hitachi, Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 11/02 (2006.01); H01L 33/00 (2010.01); C09K 11/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
Using Euas the luminescence center for a green-emitting phosphor, a plasma display panel and a PDP device using it are configured by using an Eu-activated silicate green-emitting phosphate (CaM1).M2.SiO:Euwith improved decay characteristics. In the formula, M1 is at least one element selected from the group containing Sr and Ba; M2 is at least one element selected from the group containing Mg and Zn; and x indicates the mole fraction of the component M1 and e indicates the mole fraction of Eu respectively satisfy the following conditions: 0<x<1 and 0.001≦e≦0.2.