Abstract: A wiring board includes an insulating layer including a first insulating film provided with a first surface and a second surface that is opposite to the first surface, and composed of only resin, and a second insulating film provided with a first surface and a second surface that is opposite to the first surface, including a reinforcing member and resin, in which the reinforcing member is impregnated with the resin, and stacked on the first surface of the first insulating film such that the second surface of the second insulating film contacts the first surface of the first insulating film and the second surface of the first insulating film is exposed outside; and a first wiring layer embedded in the first insulating film, a predetermined surface of the first wiring layer being exposed from the second surface of the first insulating film.

Abstract: A wiring substrate includes a stack having a plurality of insulation layers and a plurality of wiring layers. Each of the plurality of insulation layer is formed by an insulative resin of which main component is a photosensitive resin. The plurality of insulation layers and the plurality of wiring layers are alternately stacked one upon another. The wiring substrate further includes a first insulation layer covering a lower surface of the stack and entirely covering a side surface of the stack. The first insulation layer has a higher rigidity than the plurality of insulation layers. An upper surface of the uppermost one of the plurality of wiring layers and an upper surface of the uppermost one of the plurality of insulation layers are exposed from the first insulation layer.

Abstract: A wiring board includes an insulating layer including a first insulating film provided with a first surface and a second surface that is opposite to the first surface, and composed of only resin, and a second insulating film provided with a first surface and a second surface that is opposite to the first surface, including a reinforcing member and resin, in which the reinforcing member is impregnated with the resin, and stacked on the first surface of the first insulating film such that the second surface of the second insulating film contacts the first surface of the first insulating film and the second surface of the first insulating film is exposed outside; and a first wiring layer embedded in the first insulating film, a predetermined surface of the first wiring layer being exposed from the second surface of the first insulating film.

Abstract: A wiring substrate includes a stack having a plurality of insulation layers and a plurality of wiring layers. Each of the plurality of insulation layer is formed by an insulative resin of which main component is a photosensitive resin. The plurality of insulation layers and the plurality of wiring layers are alternately stacked one upon another. The wiring substrate further includes a first insulation layer covering a lower surface of the stack and entirely covering a side surface of the stack. The first insulation layer has a higher rigidity than the plurality of insulation layers. An upper surface of the uppermost one of the plurality of wiring layers and an upper surface of the uppermost one of the plurality of insulation layers are exposed from the first insulation layer.

Abstract: A semiconductor device includes an electronic component and a wiring structural body located below the electronic component. The wiring structural body includes an insulation layer and a wiring layer that is connected to an electrode terminal of the electronic component. The semiconductor device also includes a wiring shield body arranged on a side surface of the wiring structural body, an encapsulation resin covering an upper surface of the wiring structural body and a side surface of the electronic component, and a component shield body covering a surface of the encapsulation resin and continuously covering an upper surface side of the electronic component. The wiring shield body is connected to the component shield body. The wiring shield body includes an exposed side surface that is coplanar with a side surface of the component shield body.

Abstract: A circuit board includes an insulating layer including first and second insulator films, a first wiring layer embedded in the first insulator film and including pads and first wiring patterns exposed from the first insulator film, and a second wiring layer including second wiring patterns formed on the second insulator film and via wirings penetrating the insulating layer and electrically connecting the second wiring patterns to the first wiring layer. The first insulator film is made of a reinforcement-free resin that includes no reinforcing member. The second insulator film is made of a reinforcing member impregnated with a resin.

Abstract: A semiconductor device includes: a semiconductor element; a heat radiator body having a housing recess wherein a bottom surface of the housing recess is thermally connected to the upper surface of the semiconductor element; a heat sink which is thermally connected to an upper surface of the heat radiator body through adhesive agent; a sealing resin which covers the lower surface and a side surface of the heat radiator body, an inner side surface of the housing recess, and the lower surface and a side surface of the semiconductor element; and a wiring structure body formed on a lower surface of the sealing resin. The sealing resin includes a covering portion having an upper surface which is substantially flush with the bottom surface of the housing recess and covering the side surface of the heat radiator body. The adhesive agent contacts the side surface of the heat radiator body.

Abstract: A wiring board includes an insulating layer including a first insulating film provided with a first surface and a second surface that is opposite to the first surface, and composed of only resin, and a second insulating film provided with a first surface and a second surface that is opposite to the first surface, including a reinforcing member and resin, in which the reinforcing member is impregnated with the resin, and stacked on the first surface of the first insulating film such that the second surface of the second insulating film contacts the first surface of the first insulating film and the second surface of the first insulating film is exposed outside; and a first wiring layer embedded in the first insulating film, a predetermined surface of the first wiring layer being exposed from the second surface of the first insulating film.

Abstract: A semiconductor device includes an electronic component and a wiring structural body located below the electronic component. The wiring structural body includes an insulation layer and a wiring layer that is connected to an electrode terminal of the electronic component. The semiconductor device also includes a wiring shield body arranged on a side surface of the wiring structural body, an encapsulation resin covering an upper surface of the wiring structural body and a side surface of the electronic component, and a component shield body covering a surface of the encapsulation resin and continuously covering an upper surface side of the electronic component. The wiring shield body is connected to the component shield body. The wiring shield body includes an exposed side surface that is coplanar with a side surface of the component shield body.

Abstract: A semiconductor device includes: a semiconductor element; a heat radiator body having a housing recess wherein a bottom surface of the housing recess is thermally connected to the upper surface of the semiconductor element; a heat sink which is thermally connected to an upper surface of the heat radiator body through adhesive agent; a sealing resin which covers the lower surface and a side surface of the heat radiator body, an inner side surface of the housing recess, and the lower surface and a side surface of the semiconductor element; and a wiring structure body formed on a lower surface of the sealing resin. The sealing resin includes a covering portion having an upper surface which is substantially flush with the bottom surface of the housing recess and covering the side surface of the heat radiator body. The adhesive agent contacts the side surface of the heat radiator body.

Abstract: A circuit board includes an insulating layer including first and second insulator films, a first wiring layer embedded in the first insulator film and including pads and first wiring patterns exposed from the first insulator film, and a second wiring layer including second wiring patterns formed on the second insulator film and via wirings penetrating the insulating layer and electrically connecting the second wiring patterns to the first wiring layer. The first insulator film is made of a reinforcement-free resin that includes no reinforcing member. The second insulator film is made of a reinforcing member impregnated with a resin.

Abstract: A wiring substrate includes an inorganic substrate including a substrate body formed of an inorganic material, a wiring pattern formed on the substrate body, and an external connection terminal being electrically connected to the wiring pattern, an organic substrate that is formed below the inorganic substrate, the organic substrate including an insulating layer and a wiring layer formed on the insulating layer, and a bonding layer interposed between the inorganic substrate and the organic substrate, the bonding layer including a stress buffer layer and a penetration wiring that penetrates the stress buffer layer. A thermal expansion coefficient of the stress buffer layer is greater than a thermal expansion coefficient of the inorganic substrate and less than a thermal expansion coefficient of the organic substrate. The wiring pattern and the wiring layer are electrically connected by way of the penetration wiring.

Abstract: A wiring substrate includes an inorganic substrate including a substrate body formed of an inorganic material, a wiring pattern formed on the substrate body, and an external connection terminal being electrically connected to the wiring pattern, an organic substrate that is formed below the inorganic substrate, the organic substrate including an insulating layer and a wiring layer formed on the insulating layer, and a bonding layer interposed between the inorganic substrate and the organic substrate, the bonding layer including a stress buffer layer and a penetration wiring that penetrates the stress buffer layer. A thermal expansion coefficient of the stress buffer layer is greater than a thermal expansion coefficient of the inorganic substrate and less than a thermal expansion coefficient of the organic substrate. The wiring pattern and the wiring layer are electrically connected by way of the penetration wiring.