Patent ID: 8508050
Filing Date: 2013-08-13
Classification: H01L

Abstract:
1. A wiring substrate comprising: an uppermost layer wiring; and an insulating layer covering the uppermost layer wiring, wherein parts of the uppermost layer wiring form pads, each including an upper surface exposed from the insulating layer and a side surface covered by the insulating layer, the insulating layer includes an insulating resin formed at least between adjacent ones of the pads so that the insulating resin contacts the side surface adjacent the pads, wherein the insulating resin includes an inwardly curved surface between the adjacent ones of the pads, and at least portions of the insulating resin surrounding the pads include an upper surface that is higher than the upper surface of each pad, the insulating layer further includes a recess, the recess having a bottom surface, which exposes the upper surface of each pad and is higher than the upper surface of each pad, and a step, which is formed between the upper surface of the insulating layer and the bottom surface of the recess, wherein the step includes an inclined surface, and the pads are arranged at positions of the wiring substrate corresponding to connection terminals of a mounting body to be mounted on the wiring substrate via the connection terminals arranged along a periphery of the mounting body.