Circuit carrier and production thereof
View Patent ↗A circuit carrier includes a substrate with two oppositely arranged areas. The terminal contacts of a flat connector strip are arranged in the edge regions of the areas. A through contact is arranged under at least one of the terminal contacts with concealed electrical connection to the rear side of the terminal contact and the top side of the terminal contact exhibits an undisturbed morphology and planar surface.
1. A circuit carrier, comprising:
a substrate with two oppositely arranged areas, an edge region of at least one of the areas having terminal contacts of a flat connector strip arranged in a comb structure extending along the edge region, the terminal contacts comprising flat, plug contacts suitable for engaging corresponding connector sockets via a sliding contact; and
at least one through contact arranged under one of the terminal contacts with a concealed electrical connection to the rear side of the terminal contact, a top side of the terminal contact having an undisturbed morphology and planar surface.
2. The circuit carrier as claimed in claim 1 , wherein the through contact has a metallic wall coating that touches the rear side of the terminal contact.
3. The circuit carrier as claimed in claim 1 , wherein the through contact has a metallic filling that touches the rear side of the terminal contact.
4. The circuit carrier as claimed in claim 1 , wherein the area of the substrate remote from the terminal contacts has at least one conductor track connected to the through contact.
5. The circuit carrier as claimed in claim 4 , wherein the conductor track has an electrically conductive plastic.
6. The circuit carrier as claimed in claim 5 , wherein the electrically conductive plastic has electrically conductive micro- or nanoparticles.
7. The circuit carrier as claimed in claim 5 , wherein the electrically conductive plastic has as starting material, a polyamide acetic acid ester that is enriched with nanoparticles and dissolved in N-methyl-pyrrolidine.
8. The circuit carrier as claimed in claim 5 , wherein the electrically conductive plastic has catalyst materials and adhesion promoters in a basic plastics composition made of polyamide in addition to the nanoparticles.
9. The circuit carrier as claimed in claim 1 , wherein the substrate has a multilayer printed circuit board.
10. The circuit carrier as claimed in claim 1 , wherein the substrate has a multi-layer ceramic board.
11. The circuit carrier as claimed in claim 1 , wherein the through contact has a multiple connection made of electrically conductive transitions to said one of the terminal contacts to conductor tracks on the area of the substrate opposite to the terminal contact, and/or to bonding wire terminals.
12. The circuit carrier as claimed in claim 1 , wherein the terminal contacts comprise metal foil.