Carrier, optoelectronic unit comprising a carrier and methods for the production of both

Patent metadata

Field	Value
Publication number	US-9455379-B2
Application number	US-201214112510-A
Country	US
Kind code	B2
Filing date	Apr 26, 2012
Priority date	Apr 28, 2011
Publication date	Sep 27, 2016
Grant date	Sep 27, 2016

Abstract

A carrier for an optoelectronic unit has a carrier material which includes polyethylene terephthalate which contains reflector particles and a further filler. Methods for the production of the optoelectronic unit and the carrier are also disclosed.

First claim

The invention claimed is:

1. A carrier for an optoelectronic unit having a carrier material that comprises polyethylene terephthalate that contains reflector particles and a further filler, wherein the reflector particles have a proportion of greater than or equal to 15 wt. % and less than or equal to 30 wt. %, and the further filler has a proportion of greater than or equal to 20 wt. % and less than or equal to 50 wt. % of the carrier material.

2. The carrier according to claim 1 , wherein the carrier material further contains a cross-linking additive that is at least partially cross-linked with the polyethylene terephthalate.

3. The carrier according to claim 2 , wherein the cross-linking additive comprises tetraallyl isocyanurate and has a proportion of greater than or equal to 2 wt. % and less than or equal to 4 wt. % of the carrier material.

4. The carrier according to claim 2 , wherein the further filler comprises at least one or a plurality of the following materials: glass fibers, glass spheres, cellulose fibers, mineral filler.

5. The carrier according to claim 1 , wherein the further filler is formed by glass fibers.

6. The carrier according to claim 1 , wherein the reflector particles comprise at least one or a plurality of the following materials: titanium oxide, zinc oxide, zirconium oxide, barium sulphate.

7. The carrier according to claim 1 , wherein the carrier material also comprises polybutylene terephthalate in a proportion of less than or equal to 60 wt. %.

8. The carrier according to claim 1 , wherein the carrier material also comprises polybutylene terephthalate in a proportion of less than or equal to 20 wt. %.

9. The carrier according to claim 1 , wherein the carrier material also comprises polybutylene terephthalate in a proportion of less than or equal to 10 wt. %.

10. The carrier according to claim 1 ,
wherein the carrier material also contains a cross-linking additive that is at least partially cross-linked with the polyethylene terephthalate;
wherein the carrier material also comprises polybutylene terephthalate in a proportion of less than or equal to 20 wt. %;
wherein the reflector particles have a proportion of greater than or equal to 15 wt. % and less than or equal to 30 wt. %;
wherein the further filler has a proportion of greater than or equal to 20 wt. % and less than or equal to 50 wt. % of the carrier material; and
wherein the further filler comprises at least one or a plurality of the following materials: glass fibers, glass spheres, cellulose fibers, mineral filler.

11. An optoelectronic unit comprising:
a carrier; and
an optoelectronic semiconductor chip disposed on the carrier;
wherein the carrier is formed as a carrier plate or as a housing with a housing recess in which the optoelectronic semiconductor chip is disposed; and
wherein the carrier comprises polyethylene terephthalate that contains reflector particles and a further filler, and
wherein the reflector particles have a proportion of greater than or equal to 15 wt. % and less than or equal to 30 wt. %, and the further filler has a proportion of greater than or equal to 20 wt. % and less than or equal to 50 wt. % of a carrier material.

12. The optoelectronic unit according to claim 11 , wherein the optoelectronic semiconductor chip is a light-emitting semiconductor chip.

13. The optoelectronic unit according to claim 11 , wherein the optoelectronic semiconductor chip is covered by a filler compound, which is disposed on the carrier.

14. A carrier for an optoelectronic unit having a carrier material that comprises polyethylene terephthalate that contains reflector particles and a further filler, wherein the carrier material further contains a cross-linking additive that is at least partially cross-linked with the polyethylene terephthalate.

15. The carrier according to claim 14 , wherein the cross-linking additive comprises tetraallyl isocyanurate and has a proportion of greater than or equal to 2 wt. % and less than or equal to 4 wt. % of the carrier material.

16. The carrier according to claim 14 , wherein the further filler comprises at least one or a plurality of the following materials: glass fibers, glass spheres, cellulose fibers, mineral filler.

17. The carrier according to claim 14 , wherein the further filler is formed by glass fibers.

18. The carrier according to claim 14 , wherein the carrier material also comprises polybutylene terephthalate in a proportion of less than or equal to 60 wt. %.

19. The carrier according to claim 14 , wherein the carrier material also comprises polybutylene terephthalate in a proportion of less than or equal to 20 wt. %.

20. The carrier according to claim 14 , wherein the carrier material also comprises polybutylene terephthalate in a proportion of less than or equal to 10 wt. %.

Assignees

• Kräuter Gertrud
• Osram Opto Semiconductors Gmbh

Inventors

• Kräuter Gertrud

Classifications

• H10W90/756

  between a chip and a stacked lead frame, conducting package substrate or heat sink · CPC title

• H10W72/884

  Die-attach connectors and bond wires · CPC title

• H10H20/036

  of packages · CPC title

• H10H20/856 Primary

  Reflecting means · CPC title

• H10H20/85 Primary

  Packages · CPC title