Printed structure with electrical contact having reflowable polymer core

A printed structure comprising:

• a device comprising device electrical contacts disposed on a common side of the device;
• and
• a substrate non-native to the device comprising an electrically separate first substrate electrical contact and second substrate electrical contact disposed on a surface of the substrate, wherein the first substrate electrical contact has a rounded shape and an entire extent of the second substrate electrical contact is substantially planar and is disposed directly on the surface of the substrate,
• wherein one of the device electrical contacts is in physical and electrical contact with the rounded shape of the first substrate electrical contact and another of the device electrical contracts is in physical and electrical contact with the second substrate electrical contract,
• wherein the first substrate electrical contact comprises a polymer core disposed on the surface of the substrate, wherein the polymer core is (i) a hard-cured rigid reflowed bead having a rounded shape and (ii) coated with a contact electrical conductor on a surface of the polymer core, and
• wherein a contact area between the device electrical contact and the first substrate electrical contact is less than a contact area between the polymer core and the surface of the substrate, an area of the polymer core in contact with the surface of the substrate is a lateral extent of the polymer core over the substrate, and the polymer core has a curved side wall.

A printed structure comprising:

• a device comprising device electrical contacts disposed on a common side of the device;
• and
• a substrate non-native to the device comprising an electrically separate first substrate electrical contact and second substrate electrical contact disposed on a surface of the substrate, wherein the first substrate electrical contact has a rounded shape and an entire extent of the second substrate electrical contact is substantially planar and is disposed directly on the surface of the substrate,
• wherein one of the device electrical contacts is in physical and electrical contact with the rounded shape of the first substrate electrical contact and another of the device electrical contracts is in physical and electrical contact with the second substrate electrical contract,
• wherein the first substrate electrical contact comprises a polymer core disposed on the surface of the substrate, wherein the polymer core is (i) a hard-cured rigid reflowed bead and (ii) coated with a contact electrical conductor on a surface of the polymer core, and
• wherein the device comprises a fractured or separated device tether, an area of the polymer core in contact with the surface of the substrate is a lateral extent of the polymer core over the substrate, and the polymer core has a curved side wall.