Patent ID: 9419030
Filing Date: 2016-08-16
CPC Classification: H01L

Claim Text:
1. A device comprising: a first substrate provided with a first transistor on a primary face of the first substrate; a first wiring structure which is disposed on the first substrate, the first wiring structure having a first conductive portion, a first wiring and a first insulating film, the first conductive portion containing a conductive material and being connected to a first circuit including the first transistor via the first wiring; a second substrate provided with a second transistor on a primary face of the second substrate; and a second wiring structure which is disposed on the second substrate, the second wiring structure having a second conductive portion, and a second wiring and a second insulating film, the second conductive portion containing a conductive material and being connected to a second circuit including the second transistor via the second wiring, wherein the first wiring structure and the second wiring structure are disposed between the first substrate and the second substrate, and the first wiring structure and the second wiring structure are bonded to each other at a bonding plane so that the first conductive portion and the second conductive portion are connected to each other, wherein the first insulating film has a groove in which the first conductive portion is disposed, and the first insulation film has, on a side of the second wiring structure, a first face extend along the primary face of the first substrate from the groove of the first insulating film, and the second insulating film has a groove in which the second conductive portion is disposed, and the second insulating film has, on a side of the first wiring structure, a second face extend along the primary face of the second substrate from the groove of the second insulating film, and the device further comprising at least one of: a first film which has a portion positioned, in a direction perpendicular to the primary face of the first substrate, between the first face of the first insulating film and the second conductive portion, so that the portion of the first film prevents a diffusion of the conductive material of the second conductive portion; and a second film which has a portion positioned, in a direction perpendicular to the primary face of the second substrate, between the second face of the second insulating film and the first conductive portion, so that the portion of the second film prevents a diffusion of the conductive material of the first conductive portion, wherein at least one of the first film and the second film forms the bonding plane.