Electrical connectors for optoelectronic device packaging
View Patent ↗Packaged optoelectronic device include a first barrier layer having a plurality of feedthrough apertures communicating with at least one electrode layer of the device, and a plurality of conductive patches disposed on at least one of the plurality of feedthrough apertures for electrically connecting the device to a power supply. Each conductive patch includes a conductive metal surface layer and a non-conducting surface layer having an opening exposing the metal surface layer.
1. A roll to roll process for packaging an optoelectronic device, said process comprising providing a partially packaged optoelectronic device in roll format, said partially packaged optoelectronic device comprising a substrate, a plurality of electroactive layers sandwiched between a cathode and an anode, and a first barrier layer having a plurality of feedthrough apertures exposing the cathode and the anode; providing a plurality of conductive patches, each conductive patch comprising a conductive metal surface layer and a non-conducting surface layer having an opening exposing the conductive layer; applying a conductive patch to each of the feedthrough apertures; and making contact between the conductive metal surface layer of each conductive patch and at least one of the cathode and the anode.
2. A process according to claim 1 , wherein providing a plurality of conductive patches comprises removing a portion of the at least one non-conducting layer to form a via and exposing the conductive metal through the via.
3. A process according to claim 2 , additionally comprising forming an indentation in the conductive metal surface.
4. A process according to claim 3 , additionally comprising removing a portion of the at least one non-conducting layer in an area opposite the indentation.
5. A process according to claim 1 , additionally comprising disposing a conductive adhesive material within each of the plurality of feedthrough apertures.
6. A process according to claim 5 , wherein making contact between the conductive metal surface layer of each conductive patch and one of the at least one electrode layers of the device comprises making contact through the conductive adhesive material.
7. A process according to claim 5 , wherein the conductive adhesive material is derived from a conductive thermosetting adhesive.
8. A process according to claim 5 , wherein the conductive adhesive material is an anisotropic conductive film.
9. A process according to claim 5 , wherein the conductive adhesive material is an isotropic conductive film.
10. A process according to claim 5 , wherein the conductive adhesive material is a conductive silver filled epoxy.
11. A process according to claim 1 , additionally comprising sandwiching the conductive patches between the first barrier layer and a second barrier layer having a plurality of feedthrough apertures, wherein each conductive patch is exposed through at least one of the plurality of feedthrough apertures.
12. A process according to claim 2 , wherein removing a portion of the at least one non-conducting layer to form a via and exposing the conductive metal through the via comprises
mounting to a support a metal-clad laminate comprising a conductive metal surface and at least one non-conducting layer;
coating the at least one non-conducting layer with an adhesive layer;
applying a release coating to the adhesive layer; and
ablating a portion of each of the non-conducting layers to expose the conductive metal surface.
13. A process according to claim 2 , wherein applying a conductive patch to each of the feedthrough apertures comprises removing the release film from the non-conducting surface and disposing the conductive patch on at least one of the feedthrough apertures.
14. A packaged optoelectronic device in roll format, the packaged optoelectronic device comprising a substrate, a plurality of electroactive layers sandwiched between a cathode and an anode and a first barrier layer having a plurality of feedthrough apertures exposing at least the cathode or the anode of the device, and a plurality of conductive patches disposed on at least one of the plurality of feedthrough apertures;
wherein each conductive patch comprises a conductive metal surface layer and a non-conducting surface layer having an opening.
15. A packaged optoelectronic device according to claim 14 , wherein a conductive adhesive material is disposed within each of the plurality of feedthrough apertures and contacts the conductive metal surface layer and one of the at least one electrode layers.
16. A packaged optoelectronic device according to claim 14 , wherein the conductive adhesive material is derived from a conductive thermosetting adhesive.
17. A packaged optoelectronic device according to claim 14 , wherein the conductive adhesive material is an anisotropic conductive film.
18. A packaged optoelectronic device according to claim 14 , wherein the conductive adhesive material is an isotropic conductive film.
19. A packaged optoelectronic device according to claim 14 , wherein the conductive adhesive material is a conductive silver filled epoxy.
20. A packaged optoelectronic device according to claim 14 , wherein the plurality of conductive patches is sandwiched between the first barrier layer and a second barrier layer.