Patent ID: 11916040
Assignee: SHANGHAI INTEGRATED CIRCUIT EQUIPMENT & MATERIALS INDUSTRY INNOVATION CENTER CO., LTD
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A bonding cavity structure, comprising an upper carrier and a lower carrier, wherein further comprising: a gas-flow forming mechanism, which comprises multiple open-close integrated arms, a closed space is formed between the upper carrier and the lower carrier at bonding positions by all the integrated arms closed together, the integrated arms are provided with multiple nozzles facing to wafer bonding surfaces, and the nozzles are switched to be used as gas nozzles or vacuum suction nozzles; wherein, during closing all the integrated arms, all the nozzles located on a side of two wafers are set as the gas nozzles, which blow gas parallel to the wafer bonding surfaces, meanwhile, all the nozzles located on the other side of the two wafers are set as the vacuum suction nozzles, which suck the gas blown from the gas nozzle at corresponding position, a high-speed gas-flow is generated between the two wafers, so as to produce a low pressure of Bernoulli effect, which generates tension forces on the two wafers for bonding process.