Patent ID: 8618667

Claim:
A semiconductor device comprising: a first substrate on whose one surface a first electrode and a first insulating film are formed; and a second substrate on whose one surface a second electrode and a second insulating film are formed, and the first substrate and the second substrate being layered and being electrically connected to each other by bonding the one surface of the first substrate and the one surface of the second substrate, wherein the first electrode is formed in a first region of the first insulating film, a first dummy bump made of the same material as a material of the first electrode is formed in a second region of the first insulating film, the second electrode is formed in a first region of the second insulating film, and a second dummy bump made of the same material as a material of the second electrode is formed in a second region of the second insulating film, in a direction vertical to the one surface of the first substrate, a distance from the one surface of the first substrate to an upper surface of the first electrode, a distance from the one surface of the first substrate to an upper surface of the first dummy bump, and a distance from the one surface of the first substrate to an upper surface of the first insulating film are equal to each other, in a direction vertical to the one surface of the second substrate, a distance from the one surface of the second substrate to an upper surface of the second electrode, a distance from the one surface of the second substrate to an upper surface of the second dummy bump, and a distance from the one surface of the second substrate to an upper surface of the second insulating film are equal to each other, the first dummy bump is in contact with the second insulating film, and the second dummy bump is in contact with the first insulating film, and the first insulating film and the second insulating film contain at least one of polyimide, polybenzoxazole, and benzocyclobutene.