Multi-layer ceramic substrate and method for producing the same
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United States of America Patent
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Nov 28, 2000
Grant Date -
N/A
app pub date -
Dec 28, 1998
filing date -
Jan 6, 1998
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention provides a method for producing a high-density multi-layer ceramic substrate with stable characteristics, the substrate incorporating therein a passive component such as a high-precision capacitor or inductor. The method comprises the steps of providing compact blocks containing a green ceramic functional material to form the passive components; providing a composite green laminate having a plurality of ceramic green sheets comprising a ceramic insulating material and in which the compact blocks are built in pre-disposed spaces and a paste containing a metal inducing, during firing, oxidation reaction accompanied by expansion is provided in space between inside walls of the spaces and the compact blocks; firing the composite green laminate in a state in which the laminate is sandwiched by the sheet-like supports formed of green ceramics that cannot be sintered at the sintering temperature, so as to prevent shrinkage of the laminate; and removing the unsintered sheet-like supports.
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