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. 10, 2003
Filed:
Nov. 21, 2001
Ki Chul Shin, Kyunggi-do, KR;
Iljin Corporation, Seoul, KR;
Abstract
The present invention relates to an optical integrated circuit device having a protrusion, a fabrication method of the same and a module of an optical communication transmission and receiving apparatus using the same. The optical integrated circuit device comprises a semiconductor substrate, an convex portion formed on an upper surface of the semiconductor substrate and having a taper shape lateral surface, a protection film formed on a lateral wall surface of the convex portion, a first electrode formed on an upper surface of the convex portion, and a second electrode formed on an upper surface of the semiconductor substrate, wherein said convex portion is formed of a first current disconnection layer, a second current disconnection layer and a clad layer.