Electrode of light-emitting device

US10644202B2 · kind B2 · utility

Assignee

• Epistar Corporation · TW

Inventors

• Hong Chen · San Jose, US
• Chien-Fu Shen · Hsinchu, TW
• Chao-Hsing Chen · Tainan, TW
• Yu-Chen Yang · Hsinchu, TW
• Jia-Kuen Wang · Hsinchu, TW
• Chih-Nan Lin · New Taipei, TW

Key dates

• Filing date: Jan 4, 2018
• Grant date: May 5, 2020
• Expiry date: Jan 4, 2038

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10H20/819

Abstract

A light-emitting device comprises a light-emitting semiconductor stack comprising a plurality of recesses and a mesa, each of the plurality of recesses comprising a bottom surface, and the mesa comprising an upper surface; a first electrode formed on the upper surface of the mesa; a plurality of second electrodes respectively formed on the bottom surface of the plurality of recesses; a first electrode pad formed on the light-emitting semiconductor stack and contacting with the first electrode; a second electrode pad formed on the light-emitting semiconductor stack and contacting with the plurality of second electrode; a first insulating layer comprising a plurality of passages to expose the plurality of second electrodes; and a second insulating layer comprising a plurality of spaces and formed on the first insulating layer, wherein the plurality of spaces is covered by the first electrode pad.