Metallizing paste

Details Metallizing paste Metallizing paste

1988-09-09

1990-07-10

Ryan, Patrick

Stock material or miscellaneous articles

Structurally defined web or sheet

Discontinuous or differential coating, impregnation or bond

428210, 428328, 428330, 428426, 428432, 428433, 428901, 252512, 252513, 252515, 252518, 106 112, B32B 900

Patent

active

049408496

ABSTRACT:
A metallizing paste capable of being used for screen printing applications which comprises tungsten powder and an organic vehicle system. The organic vehicle system can comprise a polymeric material, such as ethyl cellulose, and a solvent, such as terpineol and the paste preferably includes frit material, of alumina, cerium fluoride, bismuth oxide and silica and may also include manganese and/or nickel.
There is also disclosed a semi-conductor package made using the metallization paste. The package includes conductive attachment area, conductive feed-through paths, conductive vias and a conductive external underside, all of which are formed using the metallization paste in various formulations.

REFERENCES:
patent: 4051074 (1977-09-01), Asada
patent: 4381198 (1983-04-01), Kondo et al.
patent: 4799958 (1989-01-01), Morris et al.

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