The distinction between LED substrate, uvc epitaxial wafer and chip

The distinction between LED substrate, uvc epitaxial wafer and chip

How to distinguish LED substrate, epitaxial wafer, and chip? The following deep-ultraviolet LED manufacturers will answer for you one by one:

1. The substrate refers to a sapphire crystal rod or a bare chip that has been sliced and cleaned, and has not been processed by other processes. Also called substrate.

2. Epitaxial wafers refer to wafers processed by MOCVD.

The basic principle of epitaxial growth is: on a substrate (mainly sapphire, SiC, Si) heated to an appropriate temperature, the gaseous substance InGaAlP is transported to the surface of the substrate in a controlled manner to grow a specific single crystal film.

The specific process is substrate-structure design-buffer layer growth-N-type GaN layer growth-multiple quantum well light-emitting layer growth-P-type GaN layer growth-annealing-detection (optical fluorescence, X-ray)-epitaxial wafer

The chip is the final process, which is further processed on the epitaxial wafer.

The specific process is epitaxial wafercleaningtransparent electrode layer platingtransparent electrode pattern lithographycorrosiondeadhesiveplatform pattern lithographydry etchingdeadhesiveannealingSiO2 depositionwindow pattern lithographySiO2 etching Glue removal N pole pattern lithography pre-cleaning coating peeling annealing P pole pattern lithography coating peeling grinding cutting chip finished product test.

ABOUT US

Company Profile
Our Team
Why Choose Us
Our Value

PRODUCTS

Indoor lighting
Outdoor lighting
Functional lighting
Customized

CASES

Star Hotels
Real Estate
Museum House
Traffic Municipaltion

SERVICE

FAQ
Download
Warranty

NEWS

Company News
Industry News

Contact US

Tel:86-0755-85281291

E-mail:annie-chow@hsy-lighting.com breakthroughzl@163.com

Add:Room 925, Unit C, No.37, Baoshi West road, Longteng Community, Shiyan Street, Baoan District, Shenzhen

Copyright 2019 Shenzhen HesunY LED CO.,LTD | All Rights Reserved | Designed by nbone

Want to stay up to date?
Subscribe to our newsletter!