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:
Jul. 08, 2003
Filed:
Aug. 28, 2001
Hideto Sugawara, Tokyo, JP;
Kabushiki Kasiha Toshiba, Tokyo, JP;
Abstract
The semiconductor light emitting device has the first semiconductor light emission element for emitting color light in the first wave length range, the second semiconductor light emission element for emitting color light in the second wave length range, the frame electrode for mounting the first and second semiconductor light emission elements, and the package for molding them together. The first semiconductor light emission element is composed of an InGaAlP series material having an active layer composed of a plurality of composite luminous layers , and for emitting color light with a different wavelength. Luminescence spectra from the plurality of luminous layers are partially overlapped with each other. Each of the plurality of composite luminous layers , and is further composed of a plurality of luminous layers for emitting color light with substantially the same wavelength.