Environment-resistant module, micropackage and methods of manufacturing same
An environment-resistant module which provides both thermal and vibration isolation for a packaged micromachined or MEMS device is disclosed. A microplatform and a support structure for the microplatform provide the thermal and vibration isolation. The package is both hermetic and vacuum compatible and provides vertical feedthroughs for signal transfer. A micromachined or MEMS device transfer method is also disclosed that can handle a wide variety of individual micromachined or MEMS dies or wafers, in either a hybrid or integrated fashion. The module simultaneously provides both thermal and vibration isolation for the MEMS device using the microplatform and the support structure which may be fabricated from a thin glass wafer that is patterned to create crab-leg shaped suspension tethers or beams.
1. An environment-resistant module including a packaged device, the module comprising:
a device;
a package having an inner surface which forms a cavity and an outer surface which communicates with the environment;
a microplatform located within the cavity, the device being supported on the microplatform;
a flexible support structure to support the microplatform and the device within the cavity; and
an outer region of material about the support structure and supporting the support structure;
wherein the microplatform and the support structure provide physical isolation of the device, and wherein the microplatform, the support structure, and the outer region of material are substantially planar in a lateral direction and are all at least partially defined by a single planar layer of insulative material.
2. The module as claimed in claim 1 , wherein the support structure is manufactured from at least one material having high thermal resistance to provide the microplatform with thermal isolation.
3. The module as claimed in claim 2 , further comprising a heater and a temperature sensor disposed on the microplatform.
4. The module as claimed in claim 3 , further comprising electrical interconnections coupled to the heater or the temperature sensor, or both, to power the heater or temperature sensor, or both.
5. The module as claimed in claim 4 , wherein both the microplatform and the support structure are substantially planar in a lateral direction.
6. The module as claimed in claim 4 , further comprising at least one feedthrough through the package to electrically connect the device to the environment.
7. The module as claimed in claim 6 , wherein the at least one feedthrough includes a vertical feedthrough.
8. The module as claimed in claim 1 , wherein the package has a relatively low profile.
9. The module as claimed in claim 1 , wherein both the microplatform and the support structure are manufactured from a single substrate of glass.
10. The module as claimed in claim 1 , wherein both the microplatform and the support structure are manufactured from a single thermally conductive substrate.
11. The module as claimed in claim 1 , wherein the microplatform and the support structure provide thermal isolation of the device.
12. The module as claimed in claim 1 , wherein the microplatform and the support structure provide vibration isolation of the device.
13. The module as claimed in claim 1 , wherein the single planar layer of material is a thin glass wafer.
14. The module as claimed in claim 1 , wherein the device is a heater.
15. The module as claimed in claim 1 , wherein the device is a temperature sensor.
16. The module as claimed in claim 1 , further comprising electrical interconnections above the support structure connected to the device.
17. A method of making a packaged device, the method comprising:
providing a device;
providing a package having an inner surface which forms a cavity and an outer surface which communicates with the environment; and
out of a single substantially planar layer of insulative material, batch fabricating (i) a microplatform located within the cavity to support the device, (ii) a support structure to support the microplatform, and (iii) an outer region of material about the support structure and supporting the support structure, wherein the microplatform and the support structure provide physical isolation of the device.
18. The method as claimed in claim 17 , wherein the device is a micromachined or MEMS device.
19. The method as claimed in claim 17 , wherein the microplatform and the support structure provide thermal isolation of the device.
20. The method as claimed in claim 17 , wherein the microplatform and the support structure provide vibration isolation of the device.
21. An environment-resistant module including a packaged device, the module comprising:
a device;
a package having an inner surface which forms a cavity;
a microplatform located within the cavity for supporting the device;
a plurality of suspensions supporting the microplatform within the cavity; and
an outer region of material about the suspensions and supporting the suspensions;
wherein the microplatform, the suspensions, and the outer region of material are substantially planar in a lateral direction and are all at least partially defined by a single planar layer of insulative material.