Patent ID: 11901193
Assignee: SHENZHEN NEWSONIC TECHNOLOGIES CO., LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC B  H | IPC H

Claim 0:
1. A method for fabricating a device having a cavity, comprising:
obtaining a device wafer including a first substrate and a device structure formed on the first substrate;
depositing a first dielectric layer on the device wafer;
etching the first dielectric layer to expose the device structure and a portion of the first substrate;
depositing, after the etching, a second dielectric layer on the device wafer and the first dielectric layer;
performing a surface treatment on a surface of the second dielectric layer;
obtaining a second substrate; and
bonding the second substrate with the second dielectric layer on the device wafer, thereby forming the cavity between the second substrate and the device wafer.