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:
Sep. 28, 2004
Filed:
Apr. 24, 2003
Ming-Der Lin, Hsinchu, TW;
Jung-Kuei Hsu, Taipei, TW;
San-Bao Lin, Jungli, TW;
Ching-Shih Ma, Taoyuan, TW;
Opto Tech Corporation, Hsinchu, TW;
Abstract
The present invention discloses a light-emitting diode with enhanced light-emitting efficiency, in which the active current is prevented from flowing in the region under the top electrode so that the light-emitting efficiency as well as the brightness can be improved. The light-emitting diode comprises: a substrate; a first electrode formed on the bottom surface of the substrate; an epitaxial LED structure having a pn junction formed on the top surface of the substrate, and a groove formed on the epitaxial LED structure passing through the pn junction such that the epitaxial LED structure is divided into a first epitaxial LED region and a second epitaxial LED region, and the groove having a side light-reflective layer and an insulating layer; a bottom insulating layer formed on the top surface of the first epitaxial LED region; a second electrode formed on the top surface of the bottom insulating layer; and a plurality of extending conductive contacts formed on the top surface of the second epitaxial LED region, each extending conductive contact connected to the second epitaxial LED region through an extending conductive wire.