# US 11,111,385 B2 · Silicone composition

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- Number: US 11,111,385 B2
- Document ID: US11111385B2
- Status: Granted
- Kind: B2
- Application number: 16/323,412
- Filed: 2017-08-04
- Published: 2019-05-30
- Granted: 2021-09-07
- Earliest claimed: 2016-08-11
- Assignees: OSRAM OLED GmbH
- Applicants: OSRAM Opto Semiconductors GmbH
- Inventors: Hansjörg Schöll; Stephan Blaszczak
- Web page: https://patentgrep.com/patent/US11111385B2

## CPC

- C08L 83/04: Polysiloxanes
- H10H 20/854: characterised by their material, e.g. epoxy or silicone resins
- C08G 77/04: Polysiloxanes
- C08L 2205/025: containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS

## Abstract

A silicone composition includes a multiphase mixture of a low-refractive silicone having a refractive index n25D589 less than 1.45 and a high-refractive silicone having a refractive index n25D589 greater than 1.50, wherein a proportion of high-refractive silicone is 0.1 to 5.0 mass percent in relation to a total mass of high-refractive and low-refractive silicone, and the high-refractive silicone forms inclusions within the low-refractive silicone.

## Claims

### Claim 1

A silicone composition comprising a multiphase mixture of a low-refractive silicone having a refractive index n25D589 less than 1.45 and a high-refractive silicone having a refractive index n25D589 greater than 1.50, wherein a proportion of high-refractive silicone is 0.1 to 5.0 mass percent in relation to a total mass of high-refractive and low-refractive silicone, the high-refractive silicone forms inclusions within the low-refractive silicone, the silicone composition is free of converter particles, the silicone composition comprises reflector particles, and a proportion of the reflector particles is less than 1 mass percent in relation to the total mass of high-refractive, low-refractive silicone and reflector particles.

### Claim 2 (depends on 1)

The silicone composition according to claim 1, wherein the high-refractive silicone is homogeneously distributed in the low-refractive silicone.

### Claim 3 (depends on 1)

A scattering body comprising the silicone composition according to claim 1 that scatters and/or reflects light.

### Claim 4 (depends on 3)

The scattering body according to claim 3, which is part of a light-emitting device.

### Claim 5 (depends on 1)

A method of producing the silicone composition according to claim 1 comprising:
A) mixing a precursor of a low-refractive silicone with a first curing agent,
B) mixing a precursor of a high-refractive silicone with a second curing agent,
C) mixing the mixtures produced in method steps A) and B) to form an emulsion, and
D) curing the emulsion formed in method step C) to form the silicone composition.

### Claim 6 (depends on 1)

A light-emitting device comprising a scattering body comprising the silicone composition according to claim 1 or consisting of the silicone composition.

### Claim 7 (depends on 6)

The light-emitting device according to claim 6, wherein the scattering body is arranged on a light-emitting surface of the light-emitting device.

### Claim 8 (depends on 6)

The light-emitting device according to claim 6 formed as a light-emitting diode comprising at least one layer sequence having an active layer emitting an electromagnetic primary radiation, wherein the scattering body is arranged in the beam path of the electromagnetic primary radiation.

### Claim 9 (depends on 6)

The light-emitting device according to claim 6, wherein the scattering body is formed as a layer, a potting and/or a housing.

### Claim 10 (depends on 1)

A light-emitting diode comprising a scattering body comprising the silicone composition according to claim 1 or consisting of the silicone composition.