| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a wiring circuit board having built-in passive elements, which circuit board contains a capacitance element having superior capacitance value precision and a resistance element adjusted exactly by trimming, and to provide a manufacturing method for the circuit board. <P>SOLUTION: According to the wiring board having the built-in passive elements, at least one wiring layer, vias, and passive elements are formed via an insulating layer 33. The passive elements consist of the capacitance element 40 and the resistance element 50. The capacitance element 40 is formed in such a way that a dielectric layer 21 is sandwiched between a capacitance element upper electrode 13a and a capacitance element lower electrode 12a. The resistance element 50 is formed on the insulating layer 33 on the dielectric layer 21. The capacitance element 40 is separated from the resistance element 50 across the insulating layer 33. <P>COPYRIGHT: (C)2007,JPO&INPIT</p> |
