US 2025/0029791 A1Published application

Thin film capacitor

AssigneeTDK Corporation

InventorHitoshi SAITA

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Abstract

A thin film capacitor includes a dielectric layer, capacitor electrodes formed respectively on first and second surfaces of the dielectric layer, a protective insulating film formed on the first surface of the dielectric layer so as to embed therein one of the capacitor electrodes, a protective insulating film formed on the second surface of the dielectric layer so as to embed therein another of the capacitor electrodes, and terminal electrodes connected respectively to the capacitor electrodes. One of the terminal electrodes includes a first section positioned on the protective insulating film so as to overlap the other of the capacitor electrodes, a second section positioned on the protective insulating film so as not to overlap the other of the capacitor electrodes, and a third section connecting the first and second sections.

Claims7

Dependent claims

A thin film capacitor comprising:

a dielectric layer having a first surface and a second surface positioned on an opposite side of the first surface;
a first capacitor electrode formed on the first surface of the dielectric layer;
a second capacitor electrode formed on the second surface of the dielectric layer;
a first protective insulating film formed on the first surface of the dielectric layer so as to embed therein the first capacitor electrode;
a second protective insulating film formed on the second surface of the dielectric layer so as to embed therein the second capacitor electrode;
a first terminal electrode electrically connected to the first capacitor electrode;
and
a second terminal electrode electrically connected to the second capacitor electrode,
wherein the first terminal electrode includes a first section positioned on the first protective insulating film so as to overlap the first capacitor electrode, a second section positioned on the second protective insulating film so as not to overlap the second capacitor electrode, and a third section connecting the first and second sections.

6 more elements

A thin film capacitor including first and second unit capacitors,

wherein each of the first and second unit capacitors comprises:
a dielectric layer having a first surface and a second surface positioned on an opposite side of the first surface;
a first capacitor electrode formed on the first surface of the dielectric layer;
a second capacitor electrode formed on the second surface of the dielectric layer;
a first protective insulating film formed on the first surface of the dielectric layer so as to embed therein the first capacitor electrode;
a second protective insulating film formed on the second surface of the dielectric layer so as to embed therein the second capacitor electrode;
a first terminal electrode electrically connected to the first capacitor electrode;
and
a second terminal electrode electrically connected to the second capacitor electrode,
wherein the first terminal electrode includes a first section positioned on the first protective insulating film so as to overlap the first capacitor electrode, a second section positioned on the second protective insulating film so as not to overlap the second capacitor electrode, and a third section connecting the first and second sections, and
wherein the first and second unit capacitors are stacked such that the first section of the first terminal electrode included in the first unit capacitor and the first section of the first terminal electrode included in the second unit capacitor are connected to each other.

8 more elements

Dependencies are inferred from the claim text.