Patent ID: 8410615

Claim:
A semiconductor device having a first substrate with a first electrode formed on one surface and a second substrate with a second electrode formed on one surface, the first electrode and the second electrode being electrically coupled by bonding of the one surface of the first substrate and the one surface of the second substrate, wherein a first insulating film is formed on the one surface of the first substrate; wherein the first electrode is formed inside a first bump hole, made in a first region of the first insulating film; wherein a first conductive film of the same material as the first electrode is formed inside a first channel made in a second region of the first insulating film; wherein a surface level of the first electrode is the same as a surface level of the first insulating film; wherein a recess having a surface level lower than the surface level of the first insulating film is made in a surface of the first conductive film; and wherein ends of the first channel extend to a periphery of the first substrate.