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:
Jan. 26, 2010
Filed:
Jul. 27, 2006
Takahiro Igarashi, Kanagawa, JP;
Tsuneo Kusunoki, Kanagawa, JP;
Katsutoshi Ohno, Tokyo, JP;
Isamu Kobori, Tokyo, JP;
Takahiro Igarashi, Kanagawa, JP;
Tsuneo Kusunoki, Kanagawa, JP;
Katsutoshi Ohno, Tokyo, JP;
Isamu Kobori, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
A phosphor, an optical device, and a display device are provided. The phosphor includes a composition represented by (SrCaBa)(GaAlIn)S:Eu, wherein the concentration of europium is in the range of 1 to 9 mole percent; 0≦x≦1, 0≦y≦1, and x+y≦1; 0≦m≦1, 0≦n≦1, m+n≦1, and 2.9≦a≦5.9; and a main absorption wavelength range of the excitation is selected either a first wavelength range that overlaps the entirety of a reference wavelength range and extends to the shorter wavelength side or a second wavelength range that overlaps the entirety of the reference wavelength range and extends to the longer wavelength side according to the value a.