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:
Feb. 09, 1999
Filed:
Dec. 09, 1996
Masaharu Nobori, Tokyo, JP;
Hiroyuki Fujiwara, Tokyo, JP;
Masumi Koizumi, Tokyo, JP;
Aya Yamanaka, Tokyo, JP;
Makoto Ishimaru, Tokyo, JP;
Yukio Nakamura, Tokyo, JP;
Oki Electric Industry Co., Ltd., Tokyo, JP;
Abstract
An end face light-emitting-type LED has a first-conductive-type semiconductor substrate and a second-conductive-type diffusion region formed on a first surface of the first-conductive-type semiconductor substrate so as to have a depth within a predetermined value. The first-conductive-type semiconductor substrate has a second surface which meets the first surface at a predetermined angle with the first surface. A junction between the first-conductive-type semiconductor substrate and the second-conductive-type diffusion region includes an inclined portion with regard to the first surface in the vicinity of an edge portion of the junction which is on a side of the second surface, and light emerges from the junction via the second surface.