Light-emitting device

US10553759B2 · kind B2 · utility

Assignee

• Epistar Corporation · TW

Inventors

• Aurelien Gauthier-Brun · Hsinchu, TW
• Chao-Hsing Chen · Tainan, TW
• Chang-Tai HSAIO · Hsinchu, TW
• Chih-Hao Chen · Hsinchu, TW
• Chi-Shiang HSU · Hsinchu, TW
• Jia-Kuen Wang · Hsinchu, TW
• Yung-Hsiang Lin · Tainan, TW

Key dates

• Filing date: Jul 13, 2018
• Grant date: Feb 4, 2020
• Expiry date: Jul 13, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/841

Abstract

A light-emitting device includes a first semiconductor layer; a plurality of semiconductor pillars separated from each other and formed on the first semiconductor layer, the plurality of semiconductor pillars respectively includes a second semiconductor layer and an active layer; a first electrode covering one portion of the plurality of semiconductor pillars; and a second electrode covering another portion of the plurality of semiconductor pillars, wherein the plurality of semiconductor pillars under a covering region of the first electrode are separated from each other by a first space, the plurality of semiconductor pillars outside the covering region of the first electrode are separated from each other by a second space, and the first space is larger than the second space.