Patent ID: 8528202
Filing Date: 2013-09-10
Classification: G01R,H05K,Y10T

Abstract:
1. A method for manufacturing a three-dimensional circuit board, comprising the steps of: forming a through hole onto a primary molded article of insulating material with a molding pin or projection during an injection molding process; forming predetermined circuit patterns of a conductive material, respectively, on both sides of a circuit board constituted of the primary molded article in a plating process, wherein at a given side of the circuit board the predetermined circuit patterns are lined up with each one of said given side predetermined circuit patterns extending in a first direction; and forming a conductive layer over the through hole, which electrically connects the respectively formed predetermined circuit patterns on the both sides of the circuit board; wherein said through hole is polygonal and tapered in a direction extending from one side to another side of said both sides, wherein for every depth level of the through hole from one side to said another side of the circuit board, a planar area of the polygonal through hole at each one depth level has a first dimension larger than a second dimension orthogonal to the first dimension; wherein at said given side of said both sides of the circuit board, a shape of the through hole has said first dimension in said first direction that is larger than said second dimension along said given side, said second dimension being orthogonal to the first dimension.