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

Claim 0:
1. A bonding apparatus, comprising:
a first holder configured to hold a first substrate;
a second holder, disposed at a position facing the first holder, having an attraction surface configured to attract a second substrate to be bonded to the first substrate;
an attracting pressure generator configured to generate an attracting pressure in the attraction surface; and
a lift pin configured to space the second substrate on the attraction surface apart from the second holder,
wherein the second holder is provided with a space including an opening through which the lift pin passes, and
the space is controlled to have a pressure lower than an atmospheric pressure,
wherein the second holder comprises:
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.