Patent ID: 9226382
Filing Date: 2015-12-29
Classification: H01L,H05K,Y10T

Abstract:
1. A printed wiring board, comprising: a first resin insulation layer; a second resin insulation layer formed on the first insulation layer and having an opening portion; a second conductive layer formed on the second resin insulation layer; a mounting conductive layer formed on the first resin insulation layer in the opening portion of the second resin insulation layer such that the mounting conductive layer has a surface exposed by the opening portion; an electronic component positioned in the opening portion of the second resin insulation layer such that the electronic component is mounted on the surface of the mounting conductive layer; a filler resin structure formed on the electronic component and the second resin insulation layer, the filler resin structure comprising a resin material filling a space formed between the second resin insulation layer and the electronic component; a third conductive layer formed on the filler resin structure; a plurality of via conductors formed through the filler resin structure, the plurality of via conductors including a first via conductor connected to an electrode of the electronic component and a second via conductor connecting the third conductive layer formed on the filler resin structure and the second conductive layer formed on the second resin insulation layer; and a heat-dissipating via conductor formed in the first resin insulation layer such that the heat-dissipating via conductor is connected to the mounting conductive layer formed on the first resin insulation layer, wherein the heat-dissipating via conductor is a filled via comprising a plated material filling an opening formed through the first resin insulation layer, and the mounting conductive layer comprise a plated material same as the plated material of the heat-dissipating via conductor.