Patent · US Active

Low resistance current spreading to n-contacts of micro-LED array

US12243906B2 · kind B2 · utility

0Cited by

1References

21Claims

0Family size

Assignee

Meta Platforms Technologies, LLC · US

Inventors

Stephan Lutgen · Regensburg, DE
Markus Broell · Cork, IE
Thomas Lauermann · Heilbronn, DE
Berthold Hahn · Hemau, DE
Christophe Hurni · Seattle, US
Guillaume LHEUREUX · Cork, IE

Key dates

Filing date	Nov 12, 2021
Grant date	Mar 4, 2025
Priority date	—
Expiry date	Apr 27, 2043

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/856
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A light source includes an epitaxial layer stack that includes an n-type semiconductor layer, a light-emitting layer, and a p-type semiconductor layer. The epitaxial layer stack includes a two-dimensional (2-D) array of mesa structures formed therein. The light source further includes an array of p-contacts electrically coupled to the p-type semiconductor layer of the 2-D array of mesa structures, a metal layer in regions surrounding individual mesa structures of the 2-D array of mesa structures, and a plurality of n-contacts coupling the metal layer to the n-type semiconductor layer at a plurality of locations between the individual mesa structures of the 2-D array of mesa structures.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.