Optoelectronic device

Patent metadata

Field	Value
Publication number	US-12040317-B2
Application number	US-202117541761-A
Country	US
Kind code	B2
Filing date	Dec 3, 2021
Priority date	Dec 6, 2019
Publication date	Jul 16, 2024
Grant date	Jul 16, 2024

Abstract

An optoelectronic device comprises a plurality of optoelectronic light sources being arranged on a first layer, in particular an intermediate layer being arranged between a cover layer and a carrier layer. The first layer comprises or consists of an at least partially transparent material and each optoelectronic light source of the plurality of optoelectronic light sources comprises an individual light converter for converting light emitted by the associated light source into converted light. The light converter of each optoelectronic light source is arranged on the first layer and/or the associated optoelectronic light source.

First claim

The invention claimed is:

1. An optoelectronic device comprising:
a plurality of optoelectronic light sources being arranged on a first layer, in particular an intermediate layer being arranged between a cover layer and a carrier layer;
wherein the first layer comprises or consists of an at least partially transparent material;
wherein each optoelectronic light source of the plurality of optoelectronic light sources comprises an individual light converter for converting light emitted by the associated light source into converted light; and
wherein the light converter of each optoelectronic light source is arranged on the first layer and/or the associated optoelectronic light source.

2. The optoelectronic device according to claim 1 , wherein each of the optoelectronic light sources is a small LED with edge lengths of less than 200 μm, in particular in the range from 150 μm to 40 μm.

3. The optoelectronic device according to claim 1 , wherein the light converters of different light sources are separated from each other.

4. The optoelectronic device according to claim 1 ,
wherein the optoelectronic light sources are distributed over a first surface area of the first layer; and
wherein the first surface area is larger, in particular by a factor of at least approximately 30, than the sum of the cross sectional areas of the optoelectronic light sources.

5. The optoelectronic device according to claim 1 , wherein each light converter comprises conversion particles with a diameter of at least approximately 1 μm to 30 μm.

6. The optoelectronic device according to claim 1 , wherein each light converter comprises a droplet form covering the associated optoelectronic light source.

7. The optoelectronic device according to claim 1 , wherein each light converter is arranged between the first layer and the associated optoelectronic light source.

8. The optoelectronic device according to claim 7 , wherein each light converter comprises an adhesive being configured to fix the associated optoelectronic light source to the first substrate.

9. The optoelectronic device according to claim 1 , wherein each light converter is arranged on the first layer, opposite to the associated optoelectronic light source, and faces a light emitting surface of the associated optoelectronic light source.

10. The optoelectronic device according to claim 1 , wherein a light-blocker extends in a circumferential direction around each light converter.

11. The optoelectronic device according to claim 1 , wherein each light converter is formed as platelet being arranged, particularly glued, on the first layer and faces a light emitting surface of the associated optoelectronic light source.

12. The optoelectronic device according to claim 11 , wherein each platelet comprises conversion particles arranged within a matrix material comprising silicone, glass, or polysiloxane.

13. The optoelectronic device according to claim 1 , wherein each light converter and the associated optoelectronic light source is embedded into the first layer.

14. The optoelectronic device according to claim 1 , wherein the optoelectronic device further comprises a set of light sources without a light converter.

15. The optoelectronic device according to claim 1 , wherein the light converters include at least a first set of light converters and a second set of light converters, and the second set of light converters is configured to convert light to a different wavelength than the first set of light converters.

Assignees

• Osram Opto Semiconductors Gmbh

Inventors

• Brandl Michael
• Dobner Andreas
• Goldbach Matthias
• Wittmann Sebastian
• Hiller Uli
• Klein Markus
• Schwarz Thomas
• Waldschik Andreas
• Wittmann Michael
• Bruckschloegl Matthias
• Groetsch Stefan
• Huber Rainer
• Brick Peter
• Hofbauer Ludwig

Classifications

• H10W90/00 Primary

  Package configurations · CPC title

• B60K35/00

  Instruments specially adapted for vehicles; Arrangement of instruments in or on vehicles · CPC title

• B60K35/28

  characterised by the type of the output information, e.g. video entertainment or vehicle dynamics information; characterised by the purpose of the output information, e.g. for attracting the attention of the driver · CPC title

• B60K35/60

  Instruments characterised by their location or relative disposition in or on vehicles (arrangements of lighting devices on dashboards B60Q3/10) · CPC title

• H10H20/856

  Reflecting means · CPC title