Optoelectronic component

Patent metadata

Field	Value
Publication number	US-11133446-B2
Application number	US-201816626355-A
Country	US
Kind code	B2
Filing date	Jun 26, 2018
Priority date	Jun 28, 2017
Publication date	Sep 28, 2021
Grant date	Sep 28, 2021

Abstract

An optoelectronic component may include an optoelectronic semiconductor chip having an upper side and a lower side. An emitting region may be formed on the upper side. The emitting region may be configured to emit electromagnetic radiation. A subsurface, forming the emitting region, of the upper side may be smaller than a total surface of the upper side. A collimating optical element may be arranged over the emitting region.

First claim

The invention claimed is:

1. An optoelectronic component comprising:
an optoelectronic semiconductor chip comprising:
an upper side comprising a subsurface forming an emitting region formed thereon; wherein the emitting region is configured to emit electromagnetic radiation; and wherein the subsurface is smaller than a total surface of the upper side;
a lower side;
a collimating optical element arranged over the emitting region, on the upper side of the optoelectronic semiconductor chip,
wherein a contact layer is arranged on the upper side or on the lower side, wherein an area covered by the contact layer is substantially as large as the subsurface, forming the emitting region, of the upper side, wherein a lateral position of the area covered by the contact layer is substantially identical to a lateral position of the emitting region.

2. The optoelectronic component as claimed in claim 1 ,
wherein the area covered by the contact layer is raised relative to an uncovered region of the upper side, or relative to an uncovered region of the lower side.

3. The optoelectronic component as claimed in claim 1 ,
wherein the optoelectronic semiconductor chip further comprises at least one current path-limiting layer embedded in the optoelectronic semiconductor chip, wherein the current path-limiting layer comprises an opening, wherein an electrical conductivity of the current path-limiting layer is less than an electrical conductivity of the optoelectronic semiconductor chip in the region of the opening of the current path-limiting layer, wherein the opening is formed below the emitting region in a vertical direction relative to the upper side, wherein an opening area of the opening is substantially as large as the area of the emitting region.

4. The optoelectronic component as claimed in claim 3 , wherein the collimating optical element is a lens; and wherein the wavelength-converting material is arranged at a focus of the lens.

5. The optoelectronic component as claimed in claim 1 ,
wherein a wavelength-converting material is arranged over the emitting region.

6. The optoelectronic component as claimed in claim 5 ,
wherein a nontransparent layer is arranged on the upper side,
wherein the nontransparent layer comprises an opening over the emitting region, wherein the wavelength-converting material is arranged in the region of the opening.

7. The optoelectronic component as claimed in claim 1 ,
wherein the collimating optical element is a lens.

8. The optoelectronic component as claimed in claim 7 ,
wherein a lens surface of the lens is in contact with the upper side ( 21 ), wherein the lens surface is as large or substantially as large as the total surface of the upper side of the optoelectronic semiconductor chip.

9. The optoelectronic component as claimed in claim 8 , wherein the subsurface is at most as large as one fourth of an area of the lens.

10. The optoelectronic component as claimed in claim 1 ,
wherein the collimating optical element is a reflector, wherein the reflector comprises an opening having a first radius facing toward the emitting region, wherein the reflector comprises an opening having a second radius facing away from the emitting region, and wherein the reflector comprises a height measured perpendicularly to the upper side, wherein the second radius is at most as large as one half of an edge length of the optoelectronic semiconductor chip.

11. The optoelectronic component as claimed in claim 1 ,
wherein the emitting region is configured annularly.

12. The optoelectronic component as claimed in claim 1 ,
wherein a multiplicity of emitting regions comprises the emitting region, wherein a collimating optical element is arranged at least over one emitting region of the multiplicity of emitting regions.

13. The optoelectronic component as claimed in claim 12 ,
wherein the multiplicity of emitting regions are driven separately.

14. The optoelectronic component as claimed in claim 1 ,
further comprising at least one further optoelectronic semiconductor chip, wherein the at least one further optoelectronic semiconductor chip is configured in the same way as the optoelectronic semiconductor chip.

Assignees

• Osram Oled Gmbh
• Osram Oled

Inventors

• Brick Peter
• Groetsch Stefan
• Schwalenberg Simon
• Wittmann Michael

Classifications

• H10H29/142

  Two-dimensional arrangements, e.g. asymmetric LED layout · CPC title

• H10H20/8514

  characterised by their shape, e.g. plate or foil · CPC title

• H10H20/8312

  extending at least partially through the bodies · CPC title

• H10H20/8162

  Current-blocking structures · CPC title

• H10H20/856

  Reflecting means · CPC title