Abstract:
A device embedded substrate includes an insulating layer including an insulating resin material, a device embedded in the insulating layer, a metal film coating at least one face of the device, and a roughened portion formed by roughening at least part of the surface of the metal film. Preferably, the device embedded substrate further includes: a conductive layer pattern-formed on a bottom face, the bottom face being one face of the insulating layer; and a bonding agent made of a material different from the insulating layer and joining the conductive layer (6) and a mounting face, the mounting face being one face of the device. The metal film is formed only on a face opposite to the mounting face, and the bonding agent has a thickness smaller than a thickness from the metal film to a top face, the top face being the other face of the insulating layer.
Abstract:
A device embedded substrate provided with first and second connecting terminals on different surfaces, the substrate including: an electrically conductive metal block having one surface connected to the first connecting terminal, and having a dimension in a lateral direction larger than that of the electronic device; an intermediate connecting portion juxtaposed to the electronic device, including first insulation layer and wiring layers, whereby the first wiring layer is connected to the one surface of the metal block via a first conductive via; a second insulation layer which accommodates the metal block; and a third insulation layer stacked on the second insulation layer to embed the electronic device and whereon a second wiring layer is stacked, wherein the second wiring layer is connected to the first wiring layer via a second conductive via and connected to the second connecting terminal of the electronic device via a third conductive via.
Abstract:
A device embedded substrate provided with first and second connecting terminals on different surfaces, the substrate including: an electrically conductive metal block having one surface connected to the first connecting terminal, and having a dimension in a lateral direction larger than that of the electronic device; an intermediate connecting portion juxtaposed to the electronic device, including first insulation layer and wiring layers, whereby the first wiring layer is connected to the one surface of the metal block via a first conductive via; a second insulation layer which accommodates the metal block; and a third insulation layer stacked on the second insulation layer to embed the electronic device and whereon a second wiring layer is stacked, wherein the second wiring layer is connected to the first wiring layer via a second conductive via and connected to the second connecting terminal of the electronic device via a third conductive via.