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:
Dec. 05, 2006
Filed:
Jul. 16, 2004
Shin-ichi Sakata, Ube, JP;
Tetsuo Yamada, Ube, JP;
Shin-ichi Sakata, Ube, JP;
Tetsuo Yamada, Ube, JP;
Ube Industries, Ltd., , JP;
Abstract
To provide a Sialon-based phosphor having a high photoluminescent intensity, which can realize a high brightness LED, particularly a white LED using a blue LED as the light source, and a production method of the Sialon-based phosphor. The α-Sialon based phosphor of the present invention is represented by the formula:LiMLnSiAlON  (I)wherein M is at least one metal selected from Ca, Mg and Y, Ln is at least one lanthanide metal selected from Eu, Dy, Er, Tb, Yb and Ce, x+ay+bz=m (assuming that the valence of metal M is a and the valence of lanthanide metal Ln is b), 0<x≦0.8, 0<y, 0<z, 0.3≦m<4.5, and 0<n<2.25.