Patent ID: 7926175

Claim:
A method for manufacturing a wiring board comprising an insulating member, comprising: forming a penetrating hole in the insulating member; inserting a conductive connecting particle into the penetrating hole; disposing conductive layers on both surfaces of the insulating member; pressing the conductive layers toward the connecting particle in the penetrating hole to deform the connecting particle in the pressing direction to obtain a connecting member such that the connecting member completely fills the penetrating hole so that there is no gap between the connecting member and the penetrating hole; and patterning the conductive layers, wherein the pressing is performed such that a cross-sectional area in a direction along a surface of the insulating member of at least a portion of the connecting member is greater than a contact area of the connecting member with the conductive layers, wherein the penetrating hole is formed such that an inner diameter at one end is greater than the connecting particle, and an inner diameter at the other end is smaller than the connecting particle, and wherein the penetrating hole is formed such that an inner diameter at an upper end is greater than the connecting particle, and an inner diameter at a lower end is smaller than the connecting particle.