Stack capacitor having high volumetric efficiency
AssigneeKemet Electronics Corporation
InventorsLiancai Ning, Chris Stolarski, Qun Ya
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Abstract
An improved capacitor and method of making an improved capacitor is set forth. The capacitor has planer anodes with each anode comprising a fusion end and a separated end and the anodes are in parallel arrangement with each anode in direct electrical contact with all adjacent anodes at the fusion end. A dielectric is on the said separated end of each anode wherein the dielectric covers at least an active area of the capacitor. Spacers separate adjacent dielectrics and the interstitial space between the adjacent dielectrics and spacers has a conductive material in therein.
Claims50
A capacitor comprising:
- planer anodes with each anode of said anodes comprising a fusion end and a separated end and said anodes are in parallel arrangement with each anode in direct electrical contact with all adjacent anodes at said fusion end;
- a dielectric on said separated end of each said anode wherein said dielectric covers at least an active area of said capacitor;
- spacers separating adjacent dielectrics;
- interstitial spaces between said adjacent dielectrics and said spacers;
- and
- a conductive material in said interstitial spaces.
A method of making a capacitor comprising:
- providing planer anodes wherein each anode of said anodes comprises a fusing end and a separated end wherein each said anode comprises a dielectric covering at least a portion of said separated end;
- applying a matrix to said dielectric of at least a portion of said anodes wherein said matrix comprises a binder and a spacer;
- forming a layered stack of said anodes wherein at least one matrix is between adjacent dielectrics;
- fusing said anodes at said fusing end;
- partially removing said binder thereby forming interstitial spaces between said adjacent dielectrics with said adjacent dielectrics separated by said spacers;
- inserting a conductive material in said interstitial spaces and over an exterior of said layered stack;
- electrically attaching an anode lead to said fused anodes;
- and
- electrically attaching a cathode lead to said conductive material.
Dependencies are inferred from the claim text.