Via to plating bus
View Patent ↗Method and apparatuses directed to printed circuit boards (PCB) including plated through-holes for interconnecting to plating busses are described herein. A PCB strip may include an inner circuitry layer comprising a plurality of trace lines, and a top circuitry layer formed over the inner circuitry layer, the top circuitry layer including a plating bus, and at least one plated through-hole interconnecting the plating bus to one or more trace lines of the inner circuitry layer. The plating bus of the top circuitry layer and the plated through-holes may be located within at least one saw street of the PCB strip.
1. A printed circuit board (PCB) strip comprising:
an inner circuitry layer comprising a plurality of trace lines, wherein the inner circuitry layer does not include a plating bus;
a top circuitry layer formed over the inner circuitry layer, the top circuitry layer including a plating bus; and
at least one plated through-hole located within at least one saw street of the PCB strip, the at least one plated through-hole interconnecting the plating bus of the top circuitry layer to one or more of the plurality of trace lines of the inner circuitry layer,
wherein the at least one plated through-hole is plated with a conductive material to facilitate electrical shorting of the PCB strip, and
wherein the at least one plated though-hole is disposed such that the entire circumference of the at least one plated through-hole is disposed completely within the at least one saw street of the PCB strip.
2. The PCB strip of claim 1 , wherein the at least one plated through-hole intersects the plating bus.
3. The PCB strip of claim 1 , wherein the at least one plated through-hole electrically shorts the inner circuitry layer with the plating bus.
4. The PCB strip of claim 1 , wherein the plating bus is located within the at least one saw street of the PCB strip.
5. The PCB strip of claim 1 , wherein the plating bus defines a plurality of PCB units.
6. The PCB strip of claim 5 , wherein at least one of the PCB units is a carrier substrate.
7. The PCB strip of claim 6 , further comprising at least one microelectronic die mounted on the carrier substrate.
8. The PCB strip of claim 5 , wherein at least one of the PCB units is a system level substrate.
9. The PCB strip of claim 8 , further comprising at least one microelectronic component mounted on the system level substrate.
10. A method for forming a printed circuit board (PCB) strip, the method comprising:
forming an inner circuitry layer over a substrate core, the inner circuitry layer including a plurality of trace lines, wherein the inner circuitry layer is formed such that the inner circuitry layer does not include a plating bus;
forming a top circuitry layer over the inner circuitry layer, the top circuitry layer including a plating bus; forming at least one plated through-hole interconnecting the plating bus of the top circuitry layer to at least one of the plurality of trace lines of the inner circuitry layer; and
coating the at least one plated through-hole with a conductive material to facilitate electrical shorting of the PCB strip,
wherein the plating bus is formed within at least one saw street of the PCB strip, and
wherein the at least one plated though-hole is disposed such that the entire circumference of the at least one plated through-hole is disposed completely within the at least one saw street of the PCB strip.
11. The method of claim 10 , wherein the at least one plated through-hole is formed to intersect the plating bus.
12. The method of claim 10 , wherein the at least one plated through-hole electrically shorts the inner circuitry layer with the plating bus.
13. The method of claim 10 , wherein the at least one plated through-hole is formed within at least one saw street.
14. The method of claim 10 , further comprising cutting along the plating bus to form a plurality of PCB units.
15. The method of claim 14 , wherein at least one of the PCB units is a carrier substrate.
16. The method of claim 14 , wherein at least one of the PCB units is a system level substrate.
17. A method comprising:
providing a printed circuit board (PCB) strip including an inner circuitry layer, the inner circuitry layer comprising a plurality of trace lines, wherein the inner circuitry layer does not include a plating bus;
providing a top circuitry layer formed over the inner circuitry layer, the top circuitry layer including a plating bus;
cutting the PCB strip along the plating bus to form a plurality of PCB units,
wherein the PCB strip further includes at least one plated through-hole interconnecting the plating bus of the top circuitry layer to one or more of the plurality of trace lines of the inner circuitry layer, and
wherein cutting the PCB strip results in the complete removal of the at least one plated through-hole.
18. The method of claim 17 , wherein the at least one plated through-hole intersects the plating bus.
19. The method of claim 17 , wherein the plating bus is formed within at least one saw street of the PCB strip.
20. The method of claim 17 , wherein the at least one plated through-hole is located within a saw street.
21. The method of claim 17 , wherein at least one of the PCB units is a carrier substrate.
22. The method of claim 17 , wherein at least one of the PCB units is a system level substrate.