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. 30, 2022
Filed:
Nov. 02, 2020
Epistar Corporation, Hsinchu, TW;
Chien-Hua Chou, Hsinchu, TW;
Tai-Chun Wang, Hsinchu, TW;
Chih-Tsung Su, Hsinchu, TW;
Biau-Dar Chen, Hsinchu, TW;
EPISTAR CORPORATION, Hsinchu, TW;
Abstract
A light-emitting device comprises a semiconductor layer; a pad electrode comprising a periphery disposed on the semiconductor layer; a finger electrode connected to the pad electrode, wherein the finger electrode comprises a first portion extended from the periphery of the pad electrode and a second portion connected to the first portion; and a plurality of first current blocking regions formed on the semiconductor layer, separated from the pad electrode and formed under the finger electrode, wherein one of the plurality of first current blocking regions is most close to the pad electrode and is separated from the pad electrode by a first distance, adjacent two of others of the plurality of first current blocking regions are separated from each other by a second distance, and the first distance is longer than the second distance.