Packaging micromechanical devices
First Claim
1. A micro-electronic machined mechanical (MEMS) assembly comprising a silicon chamber having a silicon base and silicon sidewalls, and a MEMS device mounted on the silicon base within the silicon chamber.
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Abstract
The specification describes packaging assemblies for micro-electronic machined mechanical systems (MEMS). The MEMS devices in these package assemblies are based on silicon MEMS devices on a silicon support and the MEMS devices and the silicon support are mechanically isolated from foreign materials. Foreign materials pose the potential for differential thermal expansion that deleteriously affects optical alignment in the MEMS devices. In a preferred embodiment the MEMS devices are enclosed in an all-silicon chamber. Mechanical isolation is also aided by using a pin contact array for interconnecting the silicon support substrate for the MEMS devices to the next interconnect level. The use of the pin contact array also allows the MEMS devices to be easily demountable for replacement or repair.
115 Citations
16 Claims
- 1. A micro-electronic machined mechanical (MEMS) assembly comprising a silicon chamber having a silicon base and silicon sidewalls, and a MEMS device mounted on the silicon base within the silicon chamber.
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4. A micro-electronic machined mechanical (MEMS) assembly comprising:
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(a) an interconnect substrate with a top and bottom surface, an array of contact pins extending from the top surface of the interconnect substrate, (b) a chamber assembly mounted on the interconnect substrate, the chamber assembly comprising;
(i) a silicon substrate with a top and bottom surface, (ii) silicon sidewalls attached to the top surface of the silicon substrate, the silicon sidewalls combining with the silicon substrate to form a silicon chamber, (iii) a MEMS device mounted on the top surface of the silicon substrate within the silicon chamber, and (iv) a plurality of electrical contact pads on only the bottom surface of the silicon substrate, each of the electrical contact pads aligned with and contacting a contact pin extending from the top surface of the interconnect substrate. - View Dependent Claims (5, 6, 7, 8)
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9. A micro-electronic machined mechanical (MEMS) assembly comprising:
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(a) an interconnect substrate with a top and bottom surface, an array of contact pins extending from the top surface of the interconnect substrate, (b) a silicon substrate mounted on the interconnect substrate, the silicon substrate having a top surface and a bottom surface, (c) a MEMS device mounted on the top surface of the silicon substrate, (d) a plurality of electrical contact pads on only the bottom surface of the silicon substrate, each of the electrical contact pads aligned with and contacting a contact pin extending from the top surface of the interconnect substrate. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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Specification