Patent ID: 6398561
Filing Date: 2002-06-04
Classification: G01R,H05K,Y10T

Abstract:
A contact structure of a lead comprising:a lead formed by etching a conductive foil; a bump formed by electric casting by means of plating; said bump and said lead being formed of different metals, respectively; said bump being connected to a surface of said lead through a conductive connecting material; said lead being intimately contacted at a surface, on which said bump is disposed, with a first main surface of a holeless insulative sheet; a basal portion of said bump being forcibly pierced into and extended all the way through the thickness of a material of said holeless insulative sheet and a side surface of the basal portion of said bump being fusion-adhered to an inner wall surface of said through-hole; and a distal portion of said bump being projected from a second main surface of said insulative sheet.