Patent · US Active

Wavelength converter having a polysiloxane material, method of making, and solid state lighting device containing same

US10923634B2 · kind B2 · utility

1Cited by

1References

27Claims

0Family size

Assignee

OSRAM Opto Semiconductors GmbH · DE

Inventors

Alan Piquette · Kensington, US
Gertrud Kräuter · Regensburg, DE
Matthias Loster · Regensburg, DE

Key dates

Filing date	Jun 30, 2017
Grant date	Feb 16, 2021
Priority date	—
Expiry date	Jun 30, 2037

Classification

Technology area (CPC H)Electricity
CPC primaryH10H20/0361
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

A method of making a wavelength converter includes (a) combining a luminescent material and inorganic nanoparticles with a liquid methoxy methyl polysiloxane precursor to form a liquid dispersion, the precursor having a methoxy content of 10 to 50 weight percent (wt %), the inorganic nanoparticles including at least 10 weight percent of the dispersion; (b) applying the liquid dispersion to a non-stick surface; (c) curing the liquid dispersion to form a filled polymer sheet; and (d) cutting the sheet to form individual wavelength converters having a desired shape.

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