Patent ID: 11931995
Assignee: TOKYO ELECTRON LIMITED
Field: Semiconductors (Electrical engineering)
Classification: CPC B  H | IPC B

Claim 0:
1. A bonding method including attracting and holding a first substrate by using a first holder; attracting and holding a second substrate by using a second holder; and forming a combined substrate by moving the first holder and the second holder relative to each other to bring the first substrate and the second substrate into contact with each other, the bonding method comprising:
heating the first substrate and the second substrate or the combined substrate; and
cooling the heated combined substrate by using a cooling unit,
wherein, in the cooling, bending of the combined substrate is controlled by forming a temperature difference in the combined substrate, and
in the cooling, the temperature difference is formed between a first main surface of the combined substrate and a second main surface of the combined substrate, the second main surface being opposite to the first main surface,
wherein the cooling unit comprises a cooling plate and an inverting unit configured to invert the combined substrate, and
in the cooling, the temperature difference is formed between the first main surface and the second main surface by controlling the inverting unit to invert the combined substrate to allow a predetermined one of the first main surface and the second main surface to face the cooling plate, and then, by placing the combined substrate on the cooling plate.