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. 05, 2009
Filed:
Dec. 15, 2004
Yuichiro Imanari, Tsukuba, JP;
Susumu Miyazaki, Toride, JP;
Yuichiro Imanari, Tsukuba, JP;
Susumu Miyazaki, Toride, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A phosphor having small reduction in brightness when exposed to the plasma, a phosphor paste comprising the phosphor are provided. The phosphor comprises the following fluorescent substances I and II, wherein the fluorescent substance I contains silicate and Mn as an activator and the fluorescent substance II contains a compound represented by the formula (1) or a compound represented by the formula (2) and Tb as the activator.(MM)(MgZn)AlMnO  (1)[In the formula (1), Mis at least one selected from the group consisting of La, Y and Gd, Mis at least one selected from the group consisting of Ca, Sr and Ba, a is not less than 0 and not more than 0.6, b is not less than 0 and not more than 1, c is not less than 0 and not more than 0.5, d is not less than 0 and not more than 0.5, b+c is not more than 1 and c+d is more than 0 and not more than 0.5.]MOAlOBO  (2)[In the formula (2), Mis at least one selected from the group consisting of La, Y and Gd, m is not less than 2.5 and not more than 4.5 and n is not less than 3.5 and not more than 5.5.]