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US 11,114,243 B2Granted
Multilayer ceramic capacitor and method for producing the same
AssigneeMurata Manufacturing Co., Ltd.
InventorHiroaki Sugita
Life of this patent
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Abstract
A multilayer ceramic capacitor has a cuboid or substantially cuboid multilayer body including a stack of dielectric layers, inner-electrode layers alternating with the dielectric layers and exposed at end surfaces of the multilayer body, and outer electrodes on the end surfaces and coupled to the inner-electrode layers. The dielectric layers are primarily made of barium titanate. At the interfaces between the dielectric and inner-electrode layers, protective layers containing calcium zirconate cover the inner-electrode layers.
Claims18
A multilayer ceramic capacitor comprising:
- a multilayer body including:
- a stack of a plurality of dielectric layers;
- first and second primary surfaces opposite to each other in a stacking direction;
- first and second lateral surfaces opposite to each other in a width direction perpendicular to the stacking direction;
- and
- first and second end surfaces opposite to each other in a length direction perpendicular to both the stacking direction and the width direction;
- a plurality of inner-electrode layers alternating with the dielectric layers and exposed at the end surfaces;
- and
- outer electrodes disposed on the end surfaces and connected to the inner-electrode layers;
- wherein
- the dielectric layers include barium titanate as a primary component;
- and
- protective layers containing calcium zirconate covering the inner-electrode layers are located at interfaces between the dielectric layers and the inner-electrode layers.
10 more elements
Dependencies are inferred from the claim text.