Patent ID: 11916038
Assignee: CANON ANELVA CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B  C | IPC C  H

Claim 39:
40. A hybrid bonding method for electronic devices, comprising forming a bonding surface that is at least partially smooth and has an electrode portion and an insulating portion on each of the two electronic devices to be bonded, and bonding the two bonding surfaces by aligning the electrode portions and the insulating portions with each other,
the bonding between the two bonding surface comprising:
a step of forming a bonding film, which is a thin film of a metal or semiconductor formed by vacuum deposition and oxidized at least on its surface, on one of the bonding surfaces after forming the electrode portions and insulating portions,
a step of exposing the surface of the bonding film to a space having moisture to hydrophilize the surface of the bonding film,
a step of bonding the two bonding surfaces by overlaying them with each other so that the surface of the bonding film in a hydrophilic state contacts the other hydrophilized or activated bonding surface with the electrode portions and the insulating portions of the two bonding surfaces aligned with each other,
the bonding through the bonding film providing continuity between the electrode portions of the two bonding surfaces and making the insulating portions electrically insulated.