Patent ID: 8319115

Claim:
A wiring board comprising: an insulation substrate having on its upper surface a mounting portion for mounting a semiconductor element; a plurality of circular semiconductor element connection pads comprising a plating layer which are deposited in a lattice form on the mounting portion of the insulation substrate, electrodes of the semiconductor element being connected to upper surfaces of the semiconductor element connection pads through conductive bumps; and a solder resist layer deposited onto the insulation substrate, the solder resist layer covering side surfaces of the semiconductor element connection pads and exposing the upper surfaces of the semiconductor element connection pads, the solder resist layer having a concave part whose bottom surface corresponds to at least all the upper surfaces of the semiconductor element connection pads, and an electronic component connection pad comprising a plating layer, to which an electronic component other than the semiconductor element is connected, is formed outside of the mounting portion on the upper surface of the insulation substrate, and an upper surface mid part of the electronic component connection pad is exposed from the solder resist layer, wherein a thickness of the semiconductor element connection pad is larger than a thickness of the electronic component connection pad.