# US 10,374,196 B2 · Lighting device with color scattering layer and method for producing a lighting device

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- Number: US 10,374,196 B2
- Document ID: US10374196B2
- Status: Granted
- Kind: B2
- Application number: 15/306,966
- Filed: 2015-04-30
- Published: 2017-02-23
- Granted: 2019-08-06
- Earliest claimed: 2014-04-30
- Assignees: OSRAM Opto Semiconductors GmbH
- Applicants: OSRAM Opto Semiconductors GmbH
- Inventors: David Racz; Guenter Spath; Markus Richter
- Web page: https://patentgrep.com/patent/US10374196B2

## CPC

- H10H 20/84: Coatings, e.g. passivation layers or antireflective coatings
- H10D 89/60: Integrated devices comprising arrangements for electrical or thermal protection, e.g. protection circuits against electrostatic discharge [ESD]
- H10K 50/854: comprising scattering means
- H10K 59/38: comprising colour filters or colour changing media [CCM]
- H10H 20/8514: {characterised by their shape, e.g. plate or foil}
- H10W 90/00: Package configurations
- H10H: INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10D: INORGANIC ELECTRIC SEMICONDUCTOR DEVICES
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10W: GENERIC PACKAGES, INTERCONNECTIONS, CONNECTORS OR OTHER CONSTRUCTIONAL DETAILS OF DEVICES COVERED BY CLASS H10

## Abstract

A lighting device and a method for producing a lighting device are disclosed. In an embodiment, the lighting device includes a carrier, at least one optoelectronic illuminant arranged on the carrier, the illuminant configured to emit light into an emission area and a color scattering layer located in the emission area, the color scattering layer configured to generate a color by scattering of light at a surface of the color scattering layer facing away from the illuminant.

## Claims

### Claim 1

A lighting device comprising:
a carrier;
at least one optoelectronic illuminant arranged on the carrier, the illuminant configured to emit light into an emission area;
a further electronic component arranged on the carrier, wherein the further electronic component is a protective diode or a temperature sensor; and
a color scattering layer located in the emission area, the color scattering layer configured to generate a color by scattering of light at a surface of the color scattering layer facing away from the illuminant,
wherein the illuminant comprises a sprayed-on conversion layer, on which the color scattering layer is directly sprayed, and
wherein the color scattering layer is directly sprayed onto the further electronic component and
onto an area of the carrier that is situated between the illuminant and the further electronic component.

### Claim 2 (depends on 1)

The lighting device according to claim 1, wherein the color scattering layer is arranged in the emission area by a holding unit, and wherein the holding unit is formed separately from the illuminant and holds the color scattering layer.

### Claim 3 (depends on 2)

The lighting device according to claim 2, wherein the holding unit comprises a frame that receives the color scattering layer and is fixed on the carrier.

### Claim 4 (depends on 2)

The lighting device according to claim 2, wherein the color scattering layer comprises a glass layer coated with a color scattering medium and/or a ceramic layer, or wherein the color scattering layer is formed from a glass layer and/or a ceramic layer, respectively.

### Claim 5

A method for producing a lighting device, the method comprising:
arranging an optoelectronic illuminant for emitting light into an emission area on a carrier;
arranging a further electronic component on the carrier, wherein the further electronic component is a protective diode or a temperature sensor;
spraying a conversion layer onto the illuminant; and
forming a color scattering layer for generating a color by a scattering of light at a surface of the color scattering layer facing away from the illuminant into the emission area,
wherein forming the color scattering layer comprises directly spraying the color scattering layer onto the further electronic component and onto an area of the carrier situated between the illuminant and the further electronic component, and
onto the conversion layer.

### Claim 6 (depends on 5)

The method according to claim 5, wherein forming the color scattering layer comprises arranging the color scattering layer in the emission area by a holding unit, and wherein the holding unit is formed separately from the illuminant and holds the color scattering layer.

### Claim 7 (depends on 6)

The method according to claim 6, wherein the holding unit comprises a frame that receives the color scattering layer and is fixed on the carrier.

### Claim 8 (depends on 6)

The method according to claim 6, wherein the color scattering layer comprises at least one of a glass layer or ceramic layer coated with at least one of a color scattering medium or a ceramic coating layer.