Thick film capacitor adjustable by low energy laser beam and...

Details Thick film capacitor adjustable by low energy laser beam and... Thick film capacitor adjustable by low energy laser beam and...

H - Electricity

01

G

334/22.1, 334/7.

H01G 7/00 (2006.01) H01G 4/06 (2006.01)

Patent

CA 1156731

- 1 - Abstract An adjustable thick film capacitor includes a con- ductive paste layer which is fired to form a first elec- trode on a substrate, at least one dielectric paste layer over the conductive electrode which is also fired, and an organo-metallic paste layer over the dielectric layer, which is fired at high temperature to form a very thin sintered metallic conductive layer for the second electrode. The organo-metallic paste includes molecules having conducting particles, such as gold atoms, which after firing form a residue layer having a thickness of the order of 1 micron. This thin electrode can be trimmed by an accurately controlled low energy laser beam to adjust the capacitor value.

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