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. 06, 2014
Filed:
Dec. 21, 2012
High Power Opto. Inc., Taichung, TW;
Highpower Opto. Inc., Taichung, TW;
Abstract
An electrode structure for an LED includes a plurality of blind holes and a plurality of N-type metal electrodes. The LED comprises, in this order by stacking, an intrinsic semiconductor layer, an N-type semiconductor layer, a light emitting layer, a P-type semiconductor layer, a mirror layer, a buffer layer, a bonding layer, a permanent substrate and a P-type electrode. The blind holes are distributed in a pattern and run through the intrinsic semiconductor layer to reach the N-type semiconductor layer. The N-type metal electrodes respectively run through the blind holes to connect the N-type semiconductor layer. Through a 3D contact interface formed by the blind hole, not only contact impedance between the N-type metal electrode and the N-type semiconductor layer can be reduced, the N-type metal electrode also can be firmly held in the blind hole without peeling off.