Protective electronic coating

Details Protective electronic coating Protective electronic coating

1995-11-27

1998-05-19

Speer, Timothy

Stock material or miscellaneous articles

Composite

Of silicon containing

428451, 428698, 428699, 428701, 428702, 437235, 437238, 437240, 4273722, 4273977, 427402, 4274194, B32B 904

Patent

active

057533741

ABSTRACT:
A method for forming a cap on an electronic device to prevent inspection. First, a silica-containing ceramic is applied to the surface the electronic device to planarize the surface. Next, a silicon carbide coating is applied to the surface of the silica containing ceramic to form a hermetic barrier. A layer of porous silica-containing ceramic is then formed on the surface of the silicon carbide coating. Finally, the porous silica-containing ceramic is impregnated with an opaque material.

REFERENCES:
patent: 3615272 (1971-10-01), Collins
patent: 4749631 (1988-06-01), Haluska et al.
patent: 4756977 (1988-07-01), Haluska et al.
patent: 4999397 (1991-03-01), Weiss
patent: 5010159 (1991-04-01), Bank
patent: 5399441 (1995-03-01), Bearinger
patent: 5436083 (1995-07-01), Haluska
patent: 5481135 (1996-01-01), Chandra
patent: 5516596 (1996-05-01), Camilletti

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