Patent ID: 11894246
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B  Y | IPC B  H

Claim 7:
8. A bonding method, comprising:
holding a first substrate with a first holder;
holding a second substrate by generating an attracting pressure in an attraction surface of a second holder disposed at a position facing the first holder; and
bonding the first substrate and the second substrate,
wherein in the bonding of the first substrate and the second substrate, a space, provided in the second holder and provided with an opening through which a lift pin configured to space the second substrate on the attraction surface apart from the second holder passes, is controlled to have a pressure lower than an atmospheric pressure, the second holder comprising: a housing forming the space; a driving unit configured to drive the lift pin; and a sealing member, disposed between the housing and the driving unit, configured to close a gap between the housing and the lift pin when the first substrate and the second substrate are bonded,
wherein the sealing member is an O-ring seal.