Abstract: A semiconductor device includes a laminate including a semiconductor element, an insulating substrate on a first surface of the semiconductor element, an interconnect on the insulating substrate, and an interconnect member on a second surface of the semiconductor element. The interconnect is electrically connected to a first electrode in the first surface of the semiconductor element through a through hole in the insulating substrate. The interconnect member is electrically connected to a second electrode in the second surface of the semiconductor element. The semiconductor device further includes first and second elastic terminals holding the laminate therebetween. The first terminal includes a bulge that engages with a depression in the interconnect. The second terminal contacts the interconnect member. The semiconductor device further includes a fixing member fixing the first terminal and the second terminal while electrically isolating the first terminal and the second terminal from each other.

Abstract: A semiconductor device includes a lower substrate, a first wiring pattern disposed on the lower substrate with a current input terminal, a semiconductor element mounted on the lower substrate with a first electrode electrically connected to the first wiring pattern and a second electrode opposed to the first wiring pattern, an upper substrate disposed on the second electrode, via wirings extending through the upper substrate and connected to the second electrode, a second wiring pattern disposed on the upper substrate and electrically connected to the second electrode via the via wirings, and a current output terminal. The second wiring pattern is electrically connected to the current output terminal and extends from the second electrode toward the current output terminal in plan view. Among the via wirings, first via wirings closest to the current output terminal are larger than second via wirings adjacent to the first via wirings in plan view.

Abstract: A semiconductor device includes a film substrate, an adhesive on a first surface of the film substrate, an electronic component on the adhesive, a wiring layer on a second surface of the film substrate opposite from the first surface, and a reinforcement member in an area around the electronic component on the adhesive. The wiring layer is connected to the electronic component through a via hole piercing through the film substrate and the adhesive. The reinforcement member has a thickness smaller than the thickness of the electronic component.

Abstract: An electronic-component-embedded substrate includes a base having flexibility and cavities formed therethrough, electronic components disposed in the cavities, respectively, and interconnects disposed on the base and connected to the electronic components, wherein the interconnects include a metal foil having openings that abut the electronic components, and include a plating layer disposed on the metal foil and connected to the electronic components through the openings.

Abstract: A semiconductor device includes a film substrate, an adhesive on a first surface of the film substrate, an electronic component on the adhesive, a wiring layer on a second surface of the film substrate opposite from the first surface, and a reinforcement member in an area around the electronic component on the adhesive. The wiring layer is connected to the electronic component through a via hole piercing through the film substrate and the adhesive. The reinforcement member has a thickness smaller than the thickness of the electronic component.

Abstract: An electronic-component-embedded substrate includes a base having flexibility and cavities formed therethrough, electronic components disposed in the cavities, respectively, and interconnects disposed on the base and connected to the electronic components, wherein the interconnects include a metal foil having openings that abut the electronic components, and include a plating layer disposed on the metal foil and connected to the electronic components through the openings.

Abstract: A wiring substrate includes a first wiring layer, an insulation layer arranged on the first wiring layer and formed of a photosensitive resin, a via hole formed in the insulation layer and reaching the first wiring layer, and a second wiring layer formed in the via hole and on the insulation layer and connected to the first wiring layer. A surface of the first wiring layer in the via hole is formed as a roughened surface.

Abstract: A wiring substrate includes a first wiring layer, an insulation layer arranged on the first wiring layer and formed of a photosensitive resin, a via hole formed in the insulation layer and reaching the first wiring layer, and a second wiring layer formed in the via hole and on the insulation layer and connected to the first wiring layer. A surface of the first wiring layer in the via hole is formed as a roughened surface.