Patent ID: 11932531
Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  G  H | IPC B  G  H

Claim 14:
15. A method of forming an integrated chip structure, comprising:
providing a substrate having a lower semiconductor layer separated from a semiconductor layer by an insulating layer;
patterning the semiconductor layer to form a plurality of curved trenches on opposing sides of a cantilever region, a first plurality of straight trenches on opposing sides of a proof mass region, and a second straight trench between a frame region and the plurality of curved trenches, wherein the plurality of curved trenches are separated from the first plurality of straight trenches by a first sacrificial region of the semiconductor layer and from the second straight trench by a second sacrificial region of the semiconductor layer;
filling the plurality of curved trenches, the first plurality of straight trenches, and the second straight trench with one or more fill materials; and
removing the first sacrificial region and the second sacrificial region to form one or more curved cantilevers separated from a proof mass and a frame by non-zero spaces, wherein the one or more curved cantilevers have curved sidewalls that continuously extend between the proof mass and the frame.