Patent ID: 9565760
Date: 2017-02-07
CPC Classifications: H01L,H05K,Y02P

Claim:
1. A wiring board comprising: an insulating board having an insulating layer as an outermost layer; a plurality of strip-shaped wiring conductors which are adhered on the insulating layer of the outermost layer, and are partially provided with semiconductor element connection pads to which electrode terminals of a semiconductor element are connected, and the semiconductor element connection pads being provided at positions which prevent the connection pads adjacent to each other from being laterally arranged; and a solder resist layer which is adhered on the insulating board and on the strip-shaped wiring conductors and has openings for individually exposing the semiconductor element connection pads such that each of the openings has opening edges which are positioned between the corresponding semiconductor element connection pad and the strip-shaped wiring conductors adjacent to this pad; wherein the solder resist layer internally contains an insulating filler, and the insulating filler is sunk below an upper surface of the strip-shaped wiring conductors, wherein the upper surface of the strip-shaped conductor wirings forms a rounded convex surface.