Granted Patent
B2
US 9,553,246 · App. 15/204,467 · Granted Jan 24, 2017
Silicone-grafted core-shell particles, polymer matrix, and LED containing same
Inventors:
Maxim N. Tchoul (Winchester, MA); Alan L. Lenef (Belmont, MA); David W. Johnston (Kensington, NH)
Assignee:
OSRAM SYLVANIA Inc.
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Abstract
A silicone-grafted core-shell particle is described wherein the silicone-grafted core-shell particle comprises a core of an inorganic particle and a shell of a grafted poly(dimethylsiloxane) polymer formed from a bi-terminated poly(dimethylsiloxane) having reactive groups at each terminal end. The silicone-grafted core-shell particles may be dispersed in a polysiloxane polymer matrix and employed as an LED encapsulant.
Claims (2)
1. An LED comprising an LED die encapsulated in a polymeric matrix comprising a plurality of silicone-grafted core-shell particles dispersed in a polysiloxane polymer.
2. The LED of claim 1 wherein the polymeric matrix further contains a luminophor.
Assignments (3)
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jan 3, 2020
From: OSRAM OPTO SEMICONDUCTORS GMBH
To: OSRAM OLED GMBH
Reel/Frame 051467/0906 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jul 4, 2018
From: OSRAM SYLVANIA INC.
To: OSRAM OPTO SEMICONDUCTORS GMBH
Reel/Frame 046263/0912 →
ASSIGNMENT OF ASSIGNOR'S INTEREST
Recorded Jul 7, 2016
From: TCHOUL, MAXIM N.; LENEF, ALAN L.; JOHNSTON, DAVID W.
To: OSRAM SYLVANIA INC.
Reel/Frame 039103/0253 →
Continuity (3)
Division
14371229
Provisional Application
61586968
· Jan 16, 2012