Multi-functional multilayer device and method for making

Details Multi-functional multilayer device and method for making Multi-functional multilayer device and method for making

1997-09-22

1999-02-09

Ledynh, Bot L.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

361311, 361313, 3613212, 361322, 338 20, 338 21, H01G 4228, H01G 406, H01C 710

Patent

active

058702733

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.

REFERENCES:
patent: 5072329 (1991-12-01), Galvagni
patent: 5119062 (1992-06-01), Nakamura et al.
patent: 5548474 (1996-08-01), Chen et al.
patent: 5672220 (1997-09-01), Omori et al.
patent: 5739742 (1998-04-01), Iga et al.

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