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:
Mar. 26, 2013
Filed:
Apr. 02, 2010
Tzu-chieh Hsu, Hsinchu, TW;
Ching-san Tao, Hsinchu, TW;
Chen Ou, Hsinchu, TW;
Min-hsun Hsieh, Hsinchu, TW;
Chao-hsing Chen, Hsinchu, TW;
Tzu-Chieh Hsu, Hsinchu, TW;
Ching-San Tao, Hsinchu, TW;
Chen Ou, Hsinchu, TW;
Min-Hsun Hsieh, Hsinchu, TW;
Chao-Hsing Chen, Hsinchu, TW;
Epistar Corporation, Hsinchu, TW;
Abstract
A light-emitting device including: a light-emitting stacked layer having first conductivity type semiconductor layer, a light-emitting layer formed on the first conductivity type semiconductor layer, and a second conductivity type semiconductor layer formed on the light-emitting layer, wherein the upper surface of the second conductivity type semiconductor layer is a textured surface; a first planarization layer formed on a first partial of the upper surface of the second conductivity type semiconductor layer; a first transparent conductive oxide layer formed on the first planarization layer and a second partial of the second conductivity type semiconductor layer, including a first portion in contact with the first planarization layer and a second portion having a first plurality of cavities in contact with the second conductivity type semiconductor layer; and a first electrode formed on the first portion of the first transparent conductive oxide layer.