Patent ID: 7985929
Filing Date: 2011-07-26
Classification: H05K,Y10T

Abstract:
1. A circuit board comprising: a multilayer board, in which a plurality of insulating layers and a plurality of conductive layers are alternately stacked; and a plurality of conductive terminals, which are fitted into a plurality of through holes extending in a thickness direction of the multilayer board at predetermined positions thereof, the multilayer board having cylindrical recesses each of which is formed around a through hole corresponding thereto, has a diameter larger than that of the through hole, has a depth starting from an outermost insulating layer in the multilayer board to a surface of a predetermined conductive layer in the multilayer board, such that the multilayer board has the predetermined conductive layer of which the surface is partially exposed via the recess, and the predetermined conductive layer and the conductive terminal being electrically connected at an interface between the predetermined conductive layer and the conductive terminal in the through hole, and at an electrical interface between the conductive terminal and the surface, which is partially exposed via the recess, of the predetermined conductive layer at the conductive terminal.