| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a wiring board incorporating a capacitor in which high connection reliability is ensured between the wiring board and a circuit even when it is subjected to a severe heat cycle. SOLUTION: A capacitor element 4 is placed in an air gap part 11 of a wiring board comprising an insulation board formed by laminating a plurality of insulation sheets 1, 6, 7 containing a thermosetting resin, e.g. PPE (polyphenylene ether) resin, a wiring circuit layer 3 formed in the insulation board and on the surface thereof, and via hole conductors 2. Electrodes 6 of the capacitor element 4 are connected with the via hole conductors 2 and the capacitor element 4 is coated, except the electrodes 6 thereof, with at least one kind of thermosetting resin 5 selected from a group of polyester resin having a glass transition point of 100 deg.C or below, polyamide based resin and polyurethane based resin.</p> |
