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:
May. 08, 2012
Filed:
Apr. 03, 2009
Lin-chieh Kao, Caotun Town, TW;
Shu-ying Yang, Gangshan Town, TW;
Lin-Chieh Kao, Caotun Town, TW;
Shu-Ying Yang, Gangshan Town, TW;
HUGA Optotech Inc., Taichung, TW;
Abstract
The invention discloses a light-emitting diode including a substrate, a main stack structure, a plurality of secondary pillars, a transparent insulating material, a transparent conducting layer, a first electrode and a second electrode. The pillars are formed on the substrate and surrounding the main stack structure. The main stack structure and each of the pillars has a first conducting-type semiconductor layer, a luminescing layer, and a second conducting-type semiconductor layer formed on the substrate in sequence. The transparent insulating material fills the gaps between the pillars and is as high as the pillars. The transparent conducting layer is coated on the main stack, the pillars and the transparent insulating material. The first electrode is formed on the transparent conducting layer and second electrode is formed on the first conducting-type semiconductor layer.