Carrier for an optoelectronic component, method of producing a carrier for an optoelectronic component, wafer and soldering method

Patent metadata

Field	Value
Publication number	US-10991853-B2
Application number	US-201616061358-A
Country	US
Kind code	B2
Filing date	Dec 14, 2016
Priority date	Dec 14, 2015
Publication date	Apr 27, 2021
Grant date	Apr 27, 2021

Abstract

A carrier for an optoelectronic component includes a main body, wherein the main body includes a first electrically conductive heating layer arrangement, a first solder layer for soldering an optoelectronic component to the main body is arranged on a first side of the main body, the first electrically conductive heating layer arrangement is electrically insulated from the first solder layer and thermally connected to the first solder layer, and the first heating layer arrangement has an exposed portion on which molten solder of the first solder layer can flow to reduce an electrical resistance of the first heating layer arrangement.

First claim

The invention claimed is:

1. A carrier for an optoelectronic component comprising:
a main body,
wherein the main body comprises a first electrically conductive heating layer arrangement,
a first solder layer for soldering an optoelectronic component to the main body is arranged on a first side of the main body,
the first electrically conductive heating layer arrangement is electrically insulated from the first solder layer and thermally connected to the first solder layer,
the first heating layer arrangement has an exposed portion on which molten solder of the first solder layer can flow to reduce an electrical resistance of the first heating layer arrangement,
the first heating layer arrangement has a first electrical contacting portion, a second electrical contacting portion and a heating portion extending between the first solder layer and the first side, and the heating portion of the first heating layer arrangement is electrically contacted by the two electrical contacting portions of the first heating layer arrangement, and
the heating portion of the first heating layer arrangement has a two-dimensional coil structure.

2. The carrier according to claim 1 , wherein the first heating layer arrangement is electrically insulated from the first solder layer by a first electrically insulated passivation layer by virtue of the first passivation layer being arranged at least in part on the first heating layer arrangement, and the first solder layer is arranged at least indirectly on the first passivation layer.

3. The carrier according to claim 2 , wherein an electric line is formed to electrically contact the first heating layer arrangement, and the electric line extends from an upper side facing away from the first side of the main body of the first passivation layer to the first heating layer arrangement through the first passivation layer.

4. The carrier according to claim 3 , wherein the electric line is formed by the first heating layer arrangement.

5. The carrier according to claim 1 , wherein the thickness of the first electrically conductive heating layer arrangement is 15 nm to 200 nm.

6. The carrier according to claim 1 , further comprising an optoelectronic component, wherein the optoelectronic component is soldered onto the main body or soldered with the main body by the first solder layer.

7. The carrier according to claim 1 , wherein the first side of the main body is an upper side of the main body.

8. The carrier according to claim 1 , wherein the main body is configured as a submount.

9. The carrier according to claim 1 , wherein a second electrically conductive heating layer arrangement is arranged on a second side of the main body, lying opposite the first side, and the second heating arrangement is electrically insulated from a second solder layer arranged on the second side and thermally connected to the second solder layer.

10. The carrier according to claim 9 , wherein the main body is soldered onto a further carrier by the second solder layer.

11. The carrier according to claim 9 , wherein the second heating layer arrangement is electrically contacted by an electrical via extending from the first side to the second side of the main body.

12. A wafer comprising a plurality of carriers according to claim 1 .

13. A soldering method using a wafer according to claim 12 , wherein an optoelectronic component is soldered to the main body by the first solder layer by virtue of the first electrically conductive heating layer arrangement having a voltage or an electric current applied thereto such that the first electrically conductive heating layer arrangement is heated to melt the first solder layer.

14. A soldering method using a carrier according to claim 1 , wherein an optoelectronic component is soldered to the main body by the first solder layer by virtue of the first electrically conductive heating layer arrangement having a voltage or an electric current applied thereto such that the first electrically conductive heating layer arrangement is heated to melt the first solder layer.

15. The soldering method according to claim 14 , wherein molten solder of the first solder layer flows onto an exposed portion of the first heating layer arrangement to reduce an electrical resistance of the first heating layer arrangement.

16. A method of producing a carrier for an optoelectronic component comprising:
providing a main body, wherein the main body comprises a first electrically conductive heating layer arrangement, and
forming an electrical insulation, a thermal connection and a first solder layer for soldering an optoelectronic component to the main body on a first side of the main body such that the first electrically conductive heating layer arrangement is electrically insulated from the first solder layer and thermally connected to the first solder layer,
such that the first heating layer arrangement has a first electrical contacting portion, a second electrical contacting portion and a heating portion extending between the first solder layer and the first side, and the heating portion of the first heating layer arrangement is electrically contacted by the two electrical contacting portions of the first heating layer arrangement, and
such that the heating portion of the first heating layer arrangement has a two-dimensional coil structure.

17. A carrier for an optoelectronic component comprising:
a main body,
wherein the main body comprises a first electrically conductive heating layer arrangement,
a first solder layer for soldering an optoelectronic component to the main body is arranged on a first side of the main body,
the first electrically conductive heating layer arrangement is electrically insulated from the first solder layer and thermally connected to the first solder layer,
the first heating layer arrangement has an exposed portion on which molten solder of the first solder layer can flow to reduce an electrical resistance of the first heating layer arrangement,
a second electrically conductive heating layer arrangement is arranged on a second side of the main body, lying opposite the first side, and the second heating arrangement is electrically insulated from a second solder layer arranged on the second side and thermally connected to the second solder layer,
wherein the second heating layer arrangement is electrically contacted by an electrical via extending from the first side to the second side of the main body.

18. A carrier for an optoelectronic component comprising:
a main body comprising a first electrically conductive heating layer arrangement, and
a first solder layer for soldering an optoelectronic component to the main body is arranged on a first side of the main body,
wherein the first electrically conductive heating layer arrangement is electrically insulated from the first solder layer and thermally connected to the first solder layer,
the first heating layer arrangement has an exposed portion on which molten solder of the first solder layer can flow to reduce an electrical resistance of the first heating layer arrangement,
the first electrical heating layer arrangement is structured such that it has a heating portion and two electrical contacting portions and comprises a layer stack formed from a titanium layer, a platinum layer and a gold layer, and
the titanium layer is arranged on the first side of the main body as a first layer of the layer stack, the platinum layer is arranged on the titanium layer as a second layer of the layer stack, and the gold layer is arranged on the platinum layer as a

Assignees

• Osram Opto Semiconductors Gmbh
• Osram Oled Gmbh

Inventors

• Walter Christoph
• Enzmann Roland
• Horn Markus
• Seidenfaden Jan

Classifications

• H10W72/07331

  Connecting techniques · CPC title

• H10W72/00

  Interconnections or connectors in packages · CPC title

• H10W72/952

  comprising metals or metalloids, e.g. PbSn, Ag or Cu · CPC title

• H10W72/07336

  Soldering or alloying · CPC title

• H10W72/931

  Shapes of bond pads · CPC title