Patent · US Active

Formulation for LED encapsulation material

US10487243B2 · kind B2 · utility

0Cited by

1References

18Claims

0Family size

Assignee

AZ Electronic Materials (Luxembourg) S.A.R.L. · LU

Inventors

Ralf GROTTENMUELLER · Wiesbaden, DE
Abraham Casas Garcia-Minguillan · Wiesbaden, DE
Fumio Kita · Wiesbaden, DE
Dieter Wagner · Oberriexingen, DE
Robert J. Wiacek · Silver Spring, US
Daniel P. Russell · Baltimore, US
Zehra Serpil Gonen WILLIAMS · Baltimore, US

Key dates

Filing date	Jul 14, 2017
Grant date	Nov 26, 2019
Priority date	—
Expiry date	Jul 14, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/0362
WIPO fieldMacromolecular chemistry, polymers
WIPO sectorChemistry

Abstract

The present invention relates to a formulation suitable for the preparation of a highly refractive encapsulation material with good barrier properties towards water vapor for an LED, to an encapsulation material for an LED having a high refractive index and good barrier properties towards water vapor which is obtainable from said formulation and to a light emitting device (LED) comprising said encapsulation material. The formulation comprises a polymer comprising a first repeating unit M1 and a second repeating unit M2; and a surface-modified zirconium dioxide nanocrystal.

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