Method of manufacturing ceramic capacitors using conductive paste
AssigneeMurata Manufacturing Co., Ltd.
InventorHisashi Miki
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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.
Claims6
A method for manufacturing multilayer ceramic capacitors comprising the steps of:
- forming a conductive paste layer by screen printing a conductive paste on green ceramic sheets,
- stacking the resultant green ceramic sheets to form a multilayered body, and
- firing the multilayered body,
- wherein said conductive paste consists essentially of 50 to 70% of an organic vehicle and 30 to 50% of a metal powder having 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,
- and wherein each particle of said powder is formed entirely of a metal selected from the group consisting of Pd, Au, Ag, and Pt, at least one particle being formed from Pd.
Dependencies are inferred from the claim text.