Patent ID: 11926523
Assignee: BEIJING VOYAGER TECHNOLOGY CO., LTD.
Field: Measurement (Instruments)
Classification: CPC B  G | IPC B  G

Claim 8:
9. The method of claim 8, wherein fabricating the MEMS actuation platform using the second micro-fabrication process:
preparing an SOI wafer containing a silicon device layer, a BOX layer, and a silicon handle layer;
applying a first patterned hard mask over the silicon device layer and a second patterned hard mask under the silicon handle layer;
etching the silicon device layer with the first patterned hard mask for forming a front side MEMS actuation platform;
etching the silicon handle wafer with the second patterned hard mask to create a backside cavity; and
removing the BOX layer to release the MEMS actuation platform.