Multi-functional multilayer device and method for making
First Claim
1. A multi-functional multilayer device comprising a body having a varistor section and a capacitor section disposed thereon and a pair of terminal electrodes formed on outer surfaces of said body, whereinsaid varistor section includes at least one varistor layer interleaved between said internal plates,said capacitor section includes at least one dielectric layer interleaved between internal plates,said varistor section and said capacitor section are electrically connected in parallel by said pair of terminal electrodes,said varistor layer contains zinc oxide as a main component and at least one lanthanide oxide as an auxiliary component, andsaid dielectric layer contains titanium oxide or an oxide containing lanthanum and titanium as a main component.
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Accused Products
Abstract
In a multi-functional multilayer device including a body (10) having a varistor section (2) and a capacitor section (3) stacked and integrated therewith, the adhesion between a varistor layer and a dielectric layer is improved when the varistor layer (22) contains zinc oxide as a main component and at least one lanthanide oxide as an auxiliary component, and the dielectric layer (32) contains titanium oxide or lanthanum/titanium oxide as a main component. The device experiences little warpage upon firing when glass is added to the dielectric layer. A high resistivity intermediate layer (5) disposed between the varistor and capacitor sections (2 and 3) prevents the deterioration or loss of varistor and capacitor properties by interdiffusion of elements between the varistor and capacitor sections.
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Citations
12 Claims
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1. A multi-functional multilayer device comprising a body having a varistor section and a capacitor section disposed thereon and a pair of terminal electrodes formed on outer surfaces of said body, wherein
said varistor section includes at least one varistor layer interleaved between said internal plates, said capacitor section includes at least one dielectric layer interleaved between internal plates, said varistor section and said capacitor section are electrically connected in parallel by said pair of terminal electrodes, said varistor layer contains zinc oxide as a main component and at least one lanthanide oxide as an auxiliary component, and said dielectric layer contains titanium oxide or an oxide containing lanthanum and titanium as a main component.
Specification