Patent · US Active

Optical coupling layer to improve output flux in LEDs

US11177420B2 · kind B2 · utility

5Cited by

2References

19Claims

0Family size

Assignee

LUMILEDS LLC · US

Inventors

Antonio Lopez-Julia · Aachen, DE
Jens Meyer · Dresden, DE

Key dates

Filing date	Oct 9, 2019
Grant date	Nov 16, 2021
Priority date	—
Expiry date	Jan 11, 2040

Classification

Technology area (CPC H)Electricity
CPC primaryH10H29/142
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An optical coupling structure is disposed on a light output surface of a semiconductor LED to facilitate coupling of light emitted by the semiconductor LED through the light output surface. The optical coupling structures comprise light scattering particles and/or air voids embedded in or coated with a thin layer of a material that has an index of refraction close to or matching the index of refraction of the material forming the light output surface of the semiconductor LED.

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