Patent ID: 8592691

Claim:
A printed wiring board comprising: an insulative board; a pad formed on a surface of the insulative board and positioned such that the pad is wire-bonded with an electrode of an electronic component; a conductive circuit contiguous to the pad and formed on the surface of the insulative board; an insulation layer formed on the insulative board and the conductive circuit, the insulation layer having an opening through which the pad and a portion of the conductive circuit are exposed; and a metal coating formed on the pad, wherein the pad comprises a first portion of a first conductive film formed on the insulative board and a second conductive film formed on the first portion of the first conductive film, the conductive circuit comprises a second portion of the first conductive film contiguously extended from the first portion of the first conductive film underneath the second conductive film of the pad, the first portion and the second portion of the first conductive film and the second conductive film are formed such that the pad having a thickness greater than a thickness of the conductive circuit is formed in the opening of the insulation layer, and the metal coating is formed on a top portion of the pad and on the second portion which is contiguously extended from the first portion of the first conductive film and forms the conductive circuit.