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. 18, 2007
Filed:
Sep. 21, 2001
Tetsuya Hanamoto, Nishinomiya, JP;
Wataru Takase, Nara, JP;
Kiyoshi Suzuki, Tokyo, JP;
Kaori Kanesaka, Tokyo, JP;
Tomokazu Sagara, Tokyo, JP;
Tetsuya Hanamoto, Nishinomiya, JP;
Wataru Takase, Nara, JP;
Kiyoshi Suzuki, Tokyo, JP;
Kaori Kanesaka, Tokyo, JP;
Tomokazu Sagara, Tokyo, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A semiconductor light-emitting device has a semiconductor light-emitting element for emitting light with emission wavelengths of 390 to 420 nm, wherein the wavelengths of light from the semiconductor light-emitting element are converted by a fluorescent substance having a monochromatic emission peak. The emission wavelengths of 390 to 420 nm, which have almost no adverse effect on human bodies and components of the semiconductor light-emitting device, are in a low human visibility range. Since light whose wavelengths are converted by the fluorescent substance are hardly affected by direct light from the semiconductor light-emitting element, light from the fluorescent substance has a favorable color tone. Also, the semiconductor light-emitting device allows desired luminous colors to be obtained only by changing fluorescent substance materials without changing the structure of the semiconductor light-emitting device or the semiconductor light-emitting element.