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:
Feb. 23, 2021
Filed:
Jul. 06, 2018
Epistar Corporation, Hsinchu, TW;
Chien Cheng Huang, Hsinchu, TW;
Kuo-Wei Yen, Hsinchu, TW;
Yu-Wei Kuo, Hsinchu, TW;
Yao-Wei Yang, Hsinchu, TW;
Pei-Hsiang Tseng, Hsinchu, TW;
EPISTAR CORPORATION, Hsinchu, TW;
Abstract
A light emitting device includes: a plurality of light emitting stacked layers, including a first surface and a second surface, wherein the second surface is electrically opposite to the first surface; a mesa structure; and a current blocking (CB) layer disposed on the first surface; a transparent conductive layer disposed on or above the first surface; and a first pad electrode, disposed on the transparent conductive layer and on the first surface; wherein a sidewall of the CB layer comprises a first surface section and a second surface section having different slopes.