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:
Aug. 12, 2013
Filed:
Oct. 24, 2007
Wei-en Chien, Chia-I, TW;
Chih-sung Chang, Hsinchu, TW;
Tzer-perng Chen, Hsinchu, TW;
Pai-hsiang Wang, Hsinchu, TW;
Wei-En Chien, Chia-I, TW;
Chih-Sung Chang, Hsinchu, TW;
Tzer-Perng Chen, Hsinchu, TW;
Pai-Hsiang Wang, Hsinchu, TW;
Epistar Corporation, Hsinchu, TW;
Abstract
This invention this invention provides a light-emitting semiconductor device having enhanced brightness, to ensure even current distribution emitted by a front contact of the light emitting diodes so as to improve the light-emitting efficiency of the active layer. This invention adopts the method to manufacture the light-emitting device, comprising the steps of: forming an active layer on a substrate; forming a capping layer on the active layer to enhance current distribution, where a back contact is located on another side of the substrate and a front contact is located above the capping layer. This invention is characterized by: re-designing the front contact, by reducing the width of a metallic pattern constructing fingers or Mesh lines and increasing the number of the fingers or Mesh lines, so as to resolve the current crowding problem.