Light-emitting assembly having a carrier

Patent metadata

Field	Value
Publication number	US-9843162-B2
Application number	US-201414895120-A
Country	US
Kind code	B2
Filing date	Jun 3, 2014
Priority date	Jun 20, 2013
Publication date	Dec 12, 2017
Grant date	Dec 12, 2017

Abstract

An assembly includes a carrier and a structure having a core formed on the carrier, wherein the core has a longitudinal extension having two end regions, a first end region is arranged facing the carrier and a second end region is arranged facing away from the carrier, the core is formed as electrically conductive at least in an outer region, the region is at least partially covered with an active zone layer, the active zone layer generates electromagnetic radiation, a mirror layer is provided at least in one end region of the core to reflect electromagnetic radiation in a direction, a first electrical contact layer contacts an electrically conductive region of the core, and a second contact layer contacts the active zone layer.

First claim

The invention claimed is:

1. An assembly comprising a carrier and a structure having a core formed on the carrier, wherein the core has a longitudinal extension having two end regions, a first end region is arranged facing toward the carrier and a second end region is arranged facing away from the carrier, the core is formed as electrically conductive at least in an outer region, the outer region is at least partially covered with an active zone layer, the active zone layer generates electromagnetic radiation, a mirror layer is provided at least in one end region of the core to reflect electromagnetic radiation in a direction, a first electrical contact layer contacts an electrically conductive region of the core, and a second contact layer contacts the active zone layer,
wherein
the mirror layer has an electrically conductive first mirror layer, which is arranged on the first end region of the core, and a second mirror layer,
the first electrical contact layer has a top surface and a bottom surface where the first mirror layer is in direct contact with the top surface and the second mirror layer is in direct contact with the bottom surface,
the second mirror layer is electrically insulating, and
the first mirror layer has a lower degree of reflection than the second mirror layer.

2. The assembly as claimed in claim 1 , wherein an insulation layer is provided between the active zone layer and the first electrical contact layer and/or between the first contact layer and the second contact layer.

3. The assembly as claimed in claim 1 , wherein the mirror layer is provided on the first end region of the core facing toward the carrier, and/or a further mirror layer is provided on the second end region of the core facing away from the carrier, and wherein a direction of reflection of the electromagnetic radiation is arranged along a longitudinal axis of the core.

4. The assembly as claimed in claim 3 , wherein the further mirror layer is applied directly to the core or to the active zone layer, which covers the second end region of the core.

5. The assembly as claimed in claim 1 , wherein the mirror layer is electrically conductive and represents a contact layer for the electrical contacting of the core.

6. The assembly as claimed in claim 1 , wherein an electrical through contact is provided in the carrier, and the through contact connects in an electrically conductive manner to the first contact layer.

7. The assembly as claimed in claim 1 , wherein the first electrical contact layer is in contact with a first partial layer of the active zone layer, which adjoins the core.

8. The assembly as claimed in claim 1 , wherein the active zone layer encloses the core in the form of a jacket along a longitudinal axis.

9. The assembly as claimed in claim 1 , wherein the second contact layer laterally contacts the active zone layer.

10. The assembly as claimed in claim 1 , wherein the mirror layer is in the form of a layer sequence.

11. An array comprising multiple assemblies as claimed in claim 1 , wherein the first and/or the second contact layer of at least two assemblies are formed independently of one another and the two assemblies can be supplied separately and independently of one another with current to generate electromagnetic radiation.

12. The array as claimed in claim 11 , wherein the first and/or the second contact layer of multiple assemblies are in the form of a conductor strip, and multiple conductor strips are separate from one another.

13. A method of producing an assembly as claimed in claim 1 , comprising producing an intermediate product on a growth substrate, wherein the intermediate product at least comprises the core, removing the intermediate product from the growth substrate and applying the intermediate product to a carrier to finish the assembly.

14. The method as claimed in claim 13 , wherein the intermediate product has the core and the active zone layer.

15. An assembly comprising a carrier and a structure having a core formed on the carrier, wherein the core has a longitudinal extension having two end regions, a first end region is arranged facing toward the carrier and a second end region is arranged facing away from the carrier, the core is formed as electrically conductive at least in an outer region, the outer region is at least partially covered with an active zone layer, the active zone layer generates electromagnetic radiation, a mirror layer is provided at least in one end region of the core to reflect electromagnetic radiation in a direction, a first electrical contact layer contacts an electrically conductive region of the core, a second contact layer contacts the active zone layer, the mirror layer is provided on the first end region of the core facing toward the carrier, and the mirror layer is provided on the second end region of the core facing away from the carrier, a direction of a reflection of the electromagnetic radiation is arranged along a longitudinal axis of the core, the mirror layer has an electrically conductive first mirror layer, which is arranged on the first end region of the core, and a second mirror layer,
the first electrical contact layer has a top surface and a bottom surface where the first mirror layer is in direct contact with the top surface and the second mirror layer is in direct contact with the bottom surface,
the second mirror layer is electrically insulating, and
the first mirror layer has a lower degree of reflection than the second mirror layer.

16. An assembly comprises a carrier and a structure having a core formed on the carrier, wherein the core has a longitudinal extension having two end regions, a first end region is arranged facing toward the carrier and a second end region is arranged facing away from the carrier, the core is formed as electrically conductive at least in an outer region, the outer region is at least partially covered with an active zone layer, the active zone layer generates electromagnetic radiation, a mirror layer is provided at least in one end region of the core to reflect electromagnetic radiation in a direction, a first electrical contact layer contacts an electrically conductive region of the core, and a second contact layer contacts the active zone layer,
wherein
the mirror layer has an electrically conductive first mirror layer, which is arranged on the first end region of the core, and a second mirror layer,
the first electrical contact layer has a top surface and a bottom surface where the first mirror layer is in direct contact with the top surface and the second mirror layer is in direct contact with the bottom surface, and
the second mirror layer is electrically insulating.

Assignees

• Osram Opto Semiconductors Gmbh

Inventors

• Ristic Jelena
• Straβburg Martin
• Lell Alfred
• Strauβ Uwe

Classifications

• H01S5/341

  Structures having reduced dimensionality, e.g. quantum wires · CPC title

• H01S5/1042

  Optical microcavities, e.g. cavity dimensions comparable to the wavelength · CPC title

• H01L27/156

  Electricity · mapped topic

• H01S5/4087

  emitting more than one wavelength · CPC title

• H01S5/1835

  Non-circular mesa · CPC title