Flexible white reflective dielectric for electronic circuits

Patent metadata

Field	Value
Publication number	US-9303828-B2
Application number	US-201414326836-A
Country	US
Kind code	B2
Filing date	Jul 9, 2014
Priority date	Jul 31, 2013
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

This invention is directed to a polymer thick film white reflective flexible dielectric composition comprising urethane resin, thermoplastic phenoxy resin, and white reflective powder. Dielectrics made from the composition can be used in various electronic applications to protect electrical elements and particularly to reflect light in 3D circuits containing LED's.

First claim

What is claimed is:

1. A polymer thick film white reflective flexible dielectric composition consisting essentially of:
(a) 15-25 wt % of a first organic medium consisting of 15-25 wt % urethane resin dissolved in 75-85 wt % first organic solvent, wherein the weight percent of said urethane resin and said first organic solvent are based on the total weight of said first organic medium;
(b) 25-45 wt % of a second organic medium consisting of 20-35 wt % thermoplastic phenoxy resin…

Assignees

• Du Pont

Inventors

• Dorfman Jay Robert

Classifications

• F21K9/20

  Mechanical Engineering · mapped topic

• F21Y2115/10

  Mechanical Engineering · mapped topic

• C08L2203/206

  Chemistry & Metallurgy · mapped topic

• F21K9/60 Primary

  Mechanical Engineering · mapped topic

• C09D175/04

  Chemistry & Metallurgy · mapped topic