| 摘要 |
<p>PURPOSE:To enable small-sized mounting of a medium capacitance capacitor together with a large capacitance capacitor, by constituting a ceramic dielectric layer comprising a conductive wiring, a capacitor and a viahole with a plurality of conductive layers having different dielectric constants. CONSTITUTION:A viahole 2 for conducting an upper sheet into a lower sheet is provided at a desired position on a ceramic green sheet 1 with a high dielectric constant. An internal electrode 4 formed with a conductive paste attached to a sheet 1 with a high dielectric constant is connected to a land 3 by an internal wiring 5 formed with the conductive paste attached. An insulating ceramic green sheet 6 forms the viahole 2, the land 3 and the internal electrode 4. An external electrode 8 is formed with the above-described conductive paste attached to a most outside layer. The viahole 2, the land 3, the internal electrode 4 and the internal wiring 5 are provided in a sheet 9 with a medium dielectric constant. The sheet 1 with a high dielectric constant, the insulating sheet 6 and the sheet 9 with a medium dielectric constant are laminated and then baked to obtain a ceramic composite substrate having two dielectric layers.</p> |
