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:
Jun. 17, 2014
Filed:
Jan. 20, 2011
Noriyuki Aihara, Chichibu, JP;
Noriyoshi Seo, Hiki-gun, JP;
Noritaka Muraki, Chichibu, JP;
Showa Denko K.K., Tokyo, JP;
Abstract
A light-emitting diode, including a light emitting section including an active layer having a quantum well structure in which well layers having the composition: (InGa)As (0≦X1≦1) and barrier layers having the composition: (AlGa)As (0≦X2≦1) are alternately laminated, first guide and second guide layers paired to sandwich the active layer and having the composition: (AlGa)As (0≦X3≦1), and first cladding and second cladding layers paired to sandwich the active layer via the first guide layer and the second guide layer, respectively; a current diffusion layer formed on the light emitting section; and a functional substrate bonded to the current diffusion layer; wherein the first cladding layer and the second cladding layer have the composition: (AlGa)InP (0≦X4≦1, 0<Y≦1); and a light-emitting diode lamp and a lighting device using the same.