Patent ID: 7992297

Claim:
A method for forming a via, comprising: forming a first conductive layer on a first side of a circuit board, and forming a second conductive layer on a second side of the circuit board; forming a first hole in the first side of the circuit board, wherein the first hole does not pass all the way through the printed circuit board; forming a first conductive material on a vertical edge of the first hole and in contact with the first conductive layer; filling the first hole with a first dielectric; forming a second hole in the second side of the circuit board and in the first dielectric, wherein the second hole does not pass all the way through the printed circuit board; forming a second conductive material on a vertical edge of the second hole, wherein the second conductive material is in contact with the second conductive layer; filling the second hole with a second dielectric; and forming a via in the second dielectric and all the way through the circuit board.