Light emitting device

US10930818B2 · kind B2 · utility

Assignee

• Epistar Corporation · TW

Inventors

• Chien-Cheng Huang · Hsinchu, TW
• Kuo-Wei Yen · Hsinchu, TW
• Yu-Wei Kuo · Hsinchu, TW
• Yao-Wei Yang · Danei, TW
• Pei-Hsiang Tseng · Hsinchu, TW

Key dates

• Filing date: Jul 6, 2018
• Grant date: Feb 23, 2021
• Expiry date: Jan 31, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/034

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.