Light-emitting element, display device and backlight unit

US11870007B2 · kind B2 · utility

Assignee

• Epistar Corporation · TW

Inventors

• Che-Hung Lin · Daxi District, TW
• De-Shan Kuo · Hsinchu, TW

Key dates

• Filing date: Dec 29, 2020
• Grant date: Jan 9, 2024
• Expiry date: Jun 7, 2041

Classification

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

Abstract

A method of manufacturing a light-emitting element, includes: providing a base having an upper surface and a lower surface; forming a semiconductor stack on the upper surface; removing part of the semiconductor stack to form an isolation region surrounding the semiconductor stack; forming a dielectric stack covering the semiconductor stack and the isolation region; and applying a first laser having a first wavelength to irradiate the base along the isolation region; wherein the dielectric stack has a reflectance of 10%-50% and/or a transmittance of 50%-90% for the first wavelength.