Method and structure for fabricating sensors with a...

Details Method and structure for fabricating sensors with a... Method and structure for fabricating sensors with a...

2006-03-21

2006-03-21

Parker, Fred J. (Department: 1762)

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

C427S154000, C427S259000, C427S264000, C427S273000, C427S282000

Reexamination Certificate

active

07014888

ABSTRACT:
A method and structure that protects interior electrical components of a pressure sensor (4) from corrosive particles using a sacrificial gel dome (30) to form a vent (34) in a protective gel (32) that covers electrical components that can be corroded such as wires (16), bond pads (18), and electrical leads (14). Sacrificial gel dome (30) is dispensed over a diaphragm (28) of pressure sensor (4) to form vent (34) enabling diaphragm (28) to sense pressure variations without the influence of protective gel (32). Sacrificial gel dome (30) is removed through a water rinsing process (42) to expose vent (34).

REFERENCES:
patent: 4059708 (1977-11-01), Heiss et al.
patent: 5164558 (1992-11-01), Huff et al.
patent: 6335224 (2002-01-01), Peterson et al.
patent: 6401545 (2002-06-01), Monk et al.
patent: 2002/0095980 (2002-07-01), Breed et al.

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