Enclosed cavity structures
An example of a cavity structure comprises a cavity substrate comprising a substrate surface, a cavity extending into the cavity substrate, the cavity having a cavity bottom and cavity walls, and a cap disposed on a side of the cavity opposite the cavity bottom. The cavity substrate, the cap, and the one or more cavity walls form a cavity enclosing a volume. A component can be disposed in the cavity and can extend above the substrate surface. The component can be a piezoelectric or a MEMS device. The cap can have a tophat configuration. The cavity structure can be micro-transfer printed from a source wafer to a destination substrate.
1. A cavity structure, comprising:
a component support;
a component extending from and suspended by the component support; and
a structure tether extending from the component support;
a cavity substrate comprising a substrate surface and wherein the component support is disposed on the substrate surface;
a destination substrate; and
a broken or separated structure tether physically connected to the cavity substrate,
wherein the cavity substrate is disposed on the destination substrate.
2. The cavity structure of claim 1 , wherein the component comprises piezoelectric material and component electrodes disposed on the piezoelectric material.
3. The cavity structure of claim 2 , wherein the component electrodes comprise a component top electrode disposed on a top of the piezoelectric material and a component bottom electrode disposed on a bottom of the piezoelectric material.
4. The cavity structure of claim 1 , wherein the component support surrounds the component.
5. The cavity structure of claim 1 , wherein the component support has a top surface in a common plane with at least a portion of the component.
6. The cavity structure of claim 1 , wherein the component support has a bottom surface in a plane, and the component is suspended over the plane.
7. The cavity structure of claim 1 , comprising a cap disposed over the component.
8. The cavity structure of claim 7 , wherein the cap comprises a broken or separated cap tether.
9. The cavity structure of claim 7 , wherein the cap is disposed on the component support.
10. The cavity structure of claim 9 , wherein the component support is disposed on the substrate surface and the component is enclosed by the cavity substrate, the component support, and the cap.
11. The cavity structure of claim 1 , comprising a cap disposed over the component and adhered to the substrate surface.
12. The cavity structure of claim 1 , wherein the component is enclosed by a cap and the cavity substrate.
13. The cavity structure of claim 1 , wherein the cavity substrate comprises a cavity and the component is disposed over the cavity.
14. The cavity structure of claim 1 , wherein the component support has a rectangular perimeter and the component is attached to a side of the rectangular perimeter.
15. A cavity structure, comprising:
a component support; and
a component extending from and suspended by the component support; and
a structure tether extending from the component support;
a cavity substrate comprising a substrate surface and wherein the component support is disposed on the substrate surface; and
a cavity structure source wafer having a sacrificial portion adjacent to a structure anchor and the cavity substrate is disposed over the sacrificial portion and physically connected to the structure anchor with a structure tether.