| 摘要 |
Single-sided conductor patterned films are prepared, each of which has a conductor pattern formed only one side of a resin film and via hole filled with conductive paste. A single-sided conductor patterned film which has a conductor pattern formed only one side of a resin film and an opening formed in the resin film so as to expose an electrode is laminated on the single-sided conductor patterned films. Moreover, a cover layer with an opening to expose an electrode is laminated on a bottom surface of the single-sided conductor patterned films to form a laminate. Then, by pressing while heating the laminate, a multilayer substrate having the electrodes at both sides thereof can be produced.
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