Patent ID: 11862482
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H  B | IPC B  H

Claim 0:
1. A method, comprising:
opening a first valve of a gas supply system of a bonding tool to provide a bonding gas to a processing chamber of the bonding tool through a gas supply line of the gas supply system;
closing the first valve after purging the processing chamber using the bonding gas;
pressurizing the processing chamber and the gas supply line to a first pressure;
opening a second valve to regulate a flow of the bonding gas to the processing chamber through the gas supply line to maintain the processing chamber approximately at the first pressure,
wherein the bonding gas is supplied through the second valve at a second pressure; and

bonding a first semiconductor substrate and a second semiconductor substrate in the processing chamber while the processing chamber is maintained approximately at the first pressure.