Provided is a semiconductor device, including: a first substrate that includes a first wiring; a second substrate that is disposed facing the first substrate and includes a second wiring, the second wiring being connected to the first wiring through a connection terminal, and the second substrate being smaller in area than the first substrate; a first resin layer that is filled in a gap between the first substrate and the second substrate and covers a region, on the first substrate, in an outer periphery of the second substrate; an organic film pattern that is provided on the first substrate and surrounds the first resin layer; and a second resin layer that covers the first substrate, the organic film pattern, the first resin layer, and the second substrate.