Patent ID: 8198541

Claim:
An electronic component built-in wiring board, comprising: a plurality of wiring patterns; an insulating layer disposed between a pair of said wiring patterns, said pair of wiring patterns being provided on a main surface and a rear surface of said insulating layer, respectively; an electronic component embedded in said insulating layer; a plurality of interlayer connectors; a metallic body provided at least on or above a main surface of said electronic component and thermally contacted with said electronic component; and a metallic heat radiation plate formed at a same surface level as at least one of said wiring patterns and thermally contacted with said metallic body, wherein: said plurality of wiring patterns further comprise additional wiring patterns embedded in said insulating layer; and said wiring patterns are at least partially and electrically connected with one another by the interlayer connectors, and said electronic component is partially and electrically connected with said wiring patterns.