Composite polymer/desiccant coatings for IC encapsulation

Details Composite polymer/desiccant coatings for IC encapsulation Composite polymer/desiccant coatings for IC encapsulation

1990-10-25

1992-04-28

Lusignan, Michael

Coating processes

Electrical product produced

Integrated circuit, printed circuit, or circuit board

4274071, 427409, 427410, 4274191, C23C 2600

Patent

active

051087847

ABSTRACT:
This invention is directed to composite coating for maintaining low moisture levels at the surface of solid substrates. One embodiment of the invention comprises a coating having a desiccant layer between layers of the same or different elastomeric polymers. Another embodiment comprises a layer of elastomeric polymer covered with a layer of an elastomeric polymer/desiccant mixture. The composite coating may be applied to integrated circuits to prevent corrosion thereof.

REFERENCES:
patent: 4081397 (1978-03-01), Booe
patent: 4163072 (1979-07-01), Soos
patent: 4216246 (1980-08-01), Iwasaki
patent: 4707394 (1987-11-01), Chant
patent: 4717639 (1988-01-01), Dubin

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