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:
Sep. 09, 2014
Filed:
Oct. 18, 2013
Mitsubishi Chemical Corporation, Tokyo, JP;
Takatoshi Seto, Yokohama, JP;
Naoto Kijima, Yokohama, JP;
Keiichi Seki, Yokohama, JP;
Ryuji Adachi, Tokyo, JP;
Hiroyasu Yamada, Odawara, JP;
Tatsuya Inoue, Odawara, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A phosphor includes a crystal phase of a formula (Ln,Ca,Ce)SiN. In this formula, α is from −0.1 to 1.5, inclusive. When an object color of the phosphor is expressed by the L*a*b* color system, the value of (a*+b*)satisfies 71≦(a*+b*). Also in the formula, Ln is La, Gd, Lu, Y, Sc, or any combination of these. When the phosphor is excited with light having a wavelength of 455 nm, it emits a color wherein x is from 0.400 to 0.570 inclusive, and y is from 0.420 to 0.590, inclusive, as expressed in the CIE standard coordinate system.