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. 02, 1999
Filed:
Jul. 18, 1996
Applicant:
Inventors:
Masaharu Nobori, Tokyo, JP;
Hiroyuki Fujiwara, Tokyo, JP;
Masumi Koizumi, Tokyo, JP;
Makoto Ishimaru, Tokyo, JP;
Assignee:
Oki Electric Industry Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L / ;
U.S. Cl.
CPC ...
438 22 ;
Abstract
In a fabricating method for an end face light emitting type LED array, p-type regions are formed by diffusing impurities into portions of a semiconductor substrate, using a diffusion prevention film as a mask. Subsequently, using the diffusion prevention film as a mask again, the semiconductor substrate is etched to form a concave portion therein so that light-emission end faces are formed on a side of the concave portion. With this arrangement, a positional misalignment between the p-type regions and the light-emission end faces is prevented.