High dielectric constant ink for thick film capacitors
AssigneeGeneral Electric Company
InventorsRoland T. Girard, George A. Rice
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Abstract
An improved high dielectric constant ink useful in making thick film capacitors is disclosed in which a dielectric material is combined with a glass bonding agent having at least one electropositive element therein which is common with the powdered, high dielectric material which is one selected from the group consisting of chemically pure barium titanate and chemically pure barium titanate modified with from about 0.125% to about 5.0% by weight of a metal oxide additive. The glass bonding agent is an alkali-free binder comprising from 3 percent to 7 percent by total weight of the dielectric and binder materials.
Claims11
An improved dielectric ink for thick film printing consisting of:
- a powdered, high dielectric constant material which includes a barium titanate material which is one selected from the group consisting of chemically pure barium titanate and chemically pure barium titanate modified with from about 0.125% to about 5.0% by weight of a metal oxide additive;
- an alkali-free glass binder comprising from 3 percent to 7 percent by total weight of the dielectric and binder materials, the binder having at least the electropositive element barium present therein, the alkali-free glass has the following formulation:
- ______________________________________ Ingredient % by weight ______________________________________ BaO 38 to 46 ZnO 7 to 11 SiO.sub.2 35 to 45 B.sub.2 O.sub.3 6 to 8 Al.sub.2 O.sub.3 2 to 5 ______________________________________
- and
- a liquid vehicle for said dielectric and binder materials.
Dependencies are inferred from the claim text.