Fluid-based switch, and method of making same

Details Fluid-based switch, and method of making same Fluid-based switch, and method of making same

2007-05-01

2007-05-01

Lee, Richard K. (Department: 2832)

Electricity: circuit makers and breakers

Liquid contact

C200S600000, C335S047000, C361S699000, C333S246000

Reexamination Certificate

active

11195047

ABSTRACT:
In one embodiment, a switch includes first and second mated substrates defining therebetween a number of cavities. A plurality of electrically conductive elements extends to near at least a first of the cavities. A switching fluid, held within at least the first of the cavities, serves to electrically, but not physically, couple and decouple at least a pair of the electrically conductive elements, in response to forces that are applied to the switching fluid. A passivation layer covers at least a first of the electrically conductive elements and i) separates the first of the electrically conductive elements from at least the first of the cavities, and ii) is a dielectric for a capacitor formed between the first of the electrically conductive elements and the switching fluid. Other switches, and methods for making same, are also disclosed.

REFERENCES:
patent: 6323447 (2001-11-01), Kondoh et al.
patent: 6717495 (2004-04-01), Kondoh et al.
patent: 6728113 (2004-04-01), Knight et al.
patent: 6743991 (2004-06-01), Wong et al.
patent: 6806431 (2004-10-01), Kondoh et al.
patent: 6822176 (2004-11-01), Fazzio

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