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:
Feb. 17, 2015
Filed:
Feb. 24, 2014
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Yumi Fukuda, Tokyo, JP;
Masahiro Kato, Naka-gun, JP;
Yasushi Hattori, Kawasaki, JP;
Aoi Okada, Kawasaki, JP;
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Abstract
According to one embodiment, the phosphor exhibits a luminescence peak in a wavelength ranging from 500 to 600 nm when excited with light having an emission peak in a wavelength ranging from 250 to 500 nm. The phosphor has a composition represented by (MCe)AlSiON(M represents Sr and a part of Sr may be substituted by at least one selected from Ba, Ca, and Mg; x, y, z, u, and w satisfy 0<x≦1, 0.8≦y≦1.1, 2≦z≦3.5, 0<u≦1, 1.8≦z−u, and 13≦u+w≦15). The phosphor has a crystalline aspect ratio of 1.5 to 10.