Circuit board
AssigneeTDK Corporation
InventorHitoshi Saita
Life of this patent
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Abstract
An object of the present disclosure is to provide a circuit board capable of achieving improved heat dissipation characteristics. The circuit board includes a substrate having a ceramic board as a base material; and a thin film capacitor mounted on the substrate such that a mounting surface faces the conductor layer. The thin film capacitor includes the dielectric layer, first and second capacitor electrodes, formed on one and the other surfaces of the dielectric layer. The capacitor electrode is connected to the wiring pattern included in the conductor layer. The capacitor electrode or a terminal electrode connected thereto is exposed to the upper surface of the thin film capacitor that faces away from the mounting surface.
Claims9
A circuit board comprising:
- a substrate including a ceramic board, a first conductor layer formed on one surface of the ceramic board, and a second conductor layer formed on other surface of the ceramic board;
- and
- a thin film capacitor mounted on the substrate such that a mounting surface thereof faces the first conductor layer,
- wherein the first conductor layer includes a first wiring pattern and a second wiring pattern,
- wherein the second conductor layer includes a solid pattern overlapping the first wiring pattern, the second wiring pattern, and the thin film capacitor,
- wherein the thin film capacitor includes a dielectric layer, a first capacitor electrode formed on one surface of the dielectric layer, and a second capacitor electrode formed on other surface of the dielectric layer, a first terminal electrode connected to the first capacitor electrode, and a second terminal electrode connected to the second capacitor electrode,
- wherein the first terminal electrode is connected to the first wiring pattern,
- wherein the second terminal electrode is connected to the second wiring pattern, and
- wherein the second capacitor electrode is exposed to an upper surface of the thin film capacitor that faces away from the mounting surface.
Dependencies are inferred from the claim text.