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Capacitor unit

A technology for capacitor units and capacitors, applied in stacked capacitors, fixed capacitor electrodes, multiple fixed capacitors, etc., can solve the problems of cost, labor, unstable operation, etc., and achieve the effect of improving polarity

Inactive Publication Date: 2020-06-30
TDK CORPARATION
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is a problem that the operation becomes unstable during installation due to the polarity of the DC bias characteristic, and there are problems of cost and labor due to the need to specify the direction of the applied voltage

Method used

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Examples

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Embodiment Construction

[0040] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings. As shown in FIG. 1(A) and FIG. 1(B), the capacitor unit 1A of this embodiment includes one or more pairs having: a dielectric body 3, a first electrode 4 formed on the dielectric body 3, and a first electrode 4 formed on the dielectric body 3. Capacitors 2A, 2B of the second electrode 5 of the dielectric body 3 . In this embodiment, capacitor unit 1A includes a pair of capacitor 2A and capacitor 2B. Capacitors 2A and 2B are film capacitors. The dielectric body 3 is for example comprised of ABO as 3 A thin film layer of a dielectric with a perovskite crystal structure, wherein the A element is at least one of Ba, Ca, Sr, Pb, etc., and the B element is at least one of Ti, Zr, Sn, etc. The first electrode 4 and the second electrode 5 are, for example, metal layers containing metals such as Pt, Ru, Rh, Pd, Ir, Au, Ag, Cu, Ni, or alloys thereof.

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Abstract

A capacitor unit includes a pair or a plurality of pairs of capacitors having a dielectric, a first electrode formed on the dielectric, and a second electrode formed on the dielectric, wherein voltages in reverse directions are applied between the first electrodes and the second electrodes of respective two capacitors forming a pair.

Description

technical field [0001] The invention relates to a capacitor unit. Background technique [0002] As electronic equipment is miniaturized, the installation space of electronic components allowed within the electronic equipment tends to be reduced. A capacitor (called "condenser" in many cases in Japan) is an electronic component mounted on many electronic devices. Therefore, miniaturization or thinning is essential. Compared with multilayer ceramic capacitors manufactured by the conventional thick-film method, thin-film capacitors have thinner substrates, dielectric layers, and insulating films on which dielectrics are formed, and can be made thinner and lower in profile. Therefore, film capacitors are expected to be mounted in a low-profile and small space as an electronic component. In addition, capacitors embedded in electronic component substrates have been developed in recent years. [0003] Film capacitors often have a smaller capacitance than conventional multilayer...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01G4/005H01G4/10H01G4/33H01G4/38
CPCH01G4/005H01G4/10H01G4/33H01G4/38H01G4/06
Inventor 高桥和子石井大基大槻史朗
Owner TDK CORPARATION