H - Electricity – 05 – K
Patent
H - Electricity
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K
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H05K 3/12 (2006.01) H01L 21/48 (2006.01) H05K 1/16 (2006.01) H05K 3/46 (2006.01) H05K 1/03 (2006.01) H05K 1/09 (2006.01)
Patent
CA 2015772
A PROCESS FOR MAKING HYBRID MICBOCIRCUITS PROVIDING ACCURATE THICK FILM RESISTOR PRINTING ABSTRACT An improved process for fabricating thick film hybrid microcircuits that produces thick film resistors having electrical characteristics consistent with the microcircuit design tolerances, in areas proximate a dielectric build-up. The process includes, establishing by printing and firing a plurality of first conductor traces including the cross-under conductors to a sub- strate. Next, the resistive elements are printed and fired on the substrate and a dielectric glaze printed and fired over the resistive elements. At least one dielectric layer is then printed and fired over the cross-under conductors. A plurality of second conductor traces are next printed and fired on the substrate, including the cross-over conductors which are printed over the dielectric layer. Finally, a dielectric glaze is printed and fired over the cross-over conductors. 12
Ag Communication Systems Corporation
R. William Wray & Associates
LandOfFree
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