Conductive paste and its usage

Details Conductive paste and its usage Conductive paste and its usage

1995-01-04

1997-11-11

Picard, Leo P.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

3613214, 3613215, 3613063, 252514, 427 79, H01G 4008

Patent

active

056870558

ABSTRACT:
Thin, smooth conductive layers for internal electrodes of multilayer ceramic capacitors are produced by a method including the steps of forming a conductive paste layer on a green ceramic sheet with a conductive paste by screen printing so as to have a center-line mean roughness of not more than 1.0 .mu.m, a ten-point mean roughness of not more than 5.0 .mu.m and a thickness of metal in the dried conductive paste layer of 0.5 to 2.0 .mu.m. The conductive paste consists essentially of 50 to 70% of an organic vehicle and 30 to 50% of a metal powder with a particle size range of 0.1 to 1.5 .mu.m and a mean particle size of 0.3 to 1.0 .mu.m.

REFERENCES:
patent: 4559279 (1985-12-01), Honjo et al.
patent: 4642202 (1987-02-01), Railsback
patent: 4765929 (1988-08-01), Shaffer
patent: 4888135 (1989-12-01), Tsunaga et al.
patent: 4965698 (1990-10-01), Thoma et al.
patent: 5254360 (1993-10-01), Crownover et al.
patent: 5316698 (1994-05-01), Tani et al.
WPI Abstract Accession No. 85-071409/12; JP 600025289 (Tanaka Matthey) Feb. 8, 1985.
WPI Abstract Accession No. 93-354431/45; JP 050258608 (NEC) Oct. 8, 1993.

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