| 摘要 |
<p>To provide a circuit module using a multilayer substrate with built-in capacitors in which only the capacitance value of a predetermined one of the capacitors can be independently adjusted without changing the state of coupling between a corresponding capacitor electrode and another circuit element and the values of the other ones of the capacitors. A circuit module 10 includes a multilayer substrate 20 with built-in capacitors and external components 11 mounted on the surface of the multilayer substrate 20. On the surface of a dielectric layer 26, an auxiliary electrode 33 is formed. The auxiliary electrode 33 is electrically connected to a capacitor electrode 32 via a via electrode 37 passing through the dielectric layer 26. On the surface of a dielectric layer 28, a capacitor electrode 34 is formed so that it faces the capacitor electrode 32 and the auxiliary electrode 33 connected to the capacitor electrode 32. The auxiliary electrode 33 is formed in an area in which the capacitor electrodes 32 and 34 overlap as viewed from a lamination direction. A capacitor C31 is formed in a lightly shaded area in Fig. 1 .</p> |
