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. 21, 2012
Filed:
Apr. 10, 2009
Su-hui Lin, Taichung, TW;
Sheng-hsien Hsu, Taiping, TW;
Jing-jie Dai, Changhua, TW;
Tzong Liang Tsai, Taichung, TW;
Su-Hui Lin, Taichung, TW;
Sheng-Hsien Hsu, Taiping, TW;
Jing-Jie Dai, Changhua, TW;
Tzong Liang Tsai, Taichung, TW;
Huga Optotech, Inc., Taichung, TW;
Abstract
The invention discloses a light-emitting diode. In an embodiment, the light-emitting diode includes a substrate, a first doping type semiconductor layer, a second doping type semiconductor layer, a light-emitting layer and plural laminated structures. The first doping type semiconductor layer, the light-emitting layer and the second doping type semiconductor layer are formed on the substrate in sequence. The plural laminated structures are formed on the top surface of the second doping type semiconductor layer such that the top surface is partially exposed. Each laminated structure consists of plural transparent insulating layers which have their respective refractive indices. Additionally, each of the laminated structures is formed in a way of upwardly stacking the transparent insulating layers in sequence with the refractive indices of the transparent insulating layers decreasing gradually, so as to enhance the light-extraction efficiency and the lighting efficiency of the light-emitting diode.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile