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. 13, 2016
Filed:
Feb. 20, 2014
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Kunio Ishida, Tokyo, JP;
Keiko Albessard, Kanagawa, JP;
Yasushi Hattori, Kanagawa, JP;
Iwao Mitsuishi, Tokyo, JP;
Yumi Fukuda, Tokyo, JP;
Ryosuke Hiramatsu, Kanagawa, JP;
Aoi Okada, Kanagawa, JP;
Masahiro Kato, Kanagawa, JP;
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Abstract
A light-emitting device of an embodiment includes a light-emitting element emitting blue excitation light and a first phosphor excited by the blue excitation light and emitting fluorescence. A peak wavelength of the fluorescence is not shorter than 520 nm and shorter than 660 nm and the peak wavelength of the fluorescence shifting in the same direction when a peak wavelength of the blue excitation light shifts. The first phosphor is one of a yellow phosphor emitting yellow fluorescence, a green phosphor emitting green fluorescence, a yellow-green/yellow phosphor emitting yellow-green/yellow fluorescence and a red phosphor emitting red fluorescence.