Patent ID: 11938562
Assignee: YANGTZE MEMORY TECHNOLOGIES CO., LTD.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  H | IPC B

Claim 1:
2. The method of claim 1, wherein forming the series of ablation structures in the bonded structure comprises:
determining a scan pattern for forming the series of ablation structures in the bonded structure;
determining relative positions between the series of ablation structures and the bonding interface of the bonded structure, the bonding interface being arranged between the first wafer and the second wafer;
determining at least one of one or more focal planes or a depth of focus of a laser beam based on the relative positions between the series of ablation structures and the bonding interface;
generating the laser beam, the laser beam having a series of pulsed lasers; and
moving the laser beam in the bonded structure according to the scan pattern to form the series of ablation structures in the bonded structure.