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US 2026/0031273 A1Published application
Multilayer ceramic capacitor
AssigneeMurata Manufacturing Co., Ltd.
InventorMakoto NISHIKORI
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Abstract
A multilayer ceramic capacitor includes internal electrode layers including first internal electrode layers, second internal electrode layers, and intermediate electrode layers. At least a portion of each of the intermediate electrode layers has a coverage higher than a coverage of a region of a first counter portion of each of the first internal electrode layers adjacent to a first end surface, and a coverage higher than a coverage of a region of a second counter portion of each of the second internal electrode layers adjacent to a second end surface.
Claims18
A multilayer ceramic capacitor comprising:
- a multilayer body including a plurality of dielectric layers and a plurality of internal electrode layers that are laminated, a first main surface and a second main surface opposed to each other in a lamination direction, a first lateral surface and a second lateral surface opposed to each other in a width direction orthogonal or substantially orthogonal to the lamination direction, and a first end surface and a second end surface opposed to each other in a length direction orthogonal or substantially orthogonal to the lamination direction and the width direction;
- a first external electrode on the first end surface;
- and
- a second external electrode on the second end surface;
- wherein
- the plurality of internal electrode layers include first internal electrode layers, second internal electrode layers, and intermediate electrode layers;
- each of the first internal electrode layers includes, at one end portion thereof, a first extension portion extending toward the first end surface and connected to the first external electrode, and a first counter portion connected to the first extension portion and opposed to a corresponding one of the internal electrode layers adjacent in the lamination direction;
- each of the second internal electrode layers includes, at one end portion thereof, a second extension portion extending toward the second end surface and connected to the second external electrode, and a second counter portion connected to the second extension portion and opposed to a corresponding one of the internal electrode layers adjacent in the lamination direction;
- each of the intermediate electrode layers is not connected to either of the first external electrode or the second external electrode, and defines a series-connected capacitor element together with the first internal electrode layer and the second internal electrode layer;
- and
- at least a portion of each of the intermediate electrode layers has a coverage higher than a coverage of a region of the first counter portion of the first internal electrode layer adjacent to the first end surface, and higher than a coverage of a region of the second counter portion of the second internal electrode layer adjacent to the second end surface.
8 more elements
A multilayer ceramic capacitor comprising:
- a multilayer body including a plurality of dielectric layers and a plurality of internal electrode layers that are laminated, a first main surface and a second main surface opposed to each other in a lamination direction, a first lateral surface and a second lateral surface opposed to each other in a width direction orthogonal or substantially orthogonal to the lamination direction, and a first end surface and a second end surface opposed to each other in a length direction orthogonal or substantially orthogonal to the lamination direction and the width direction;
- a first external electrode on the first end surface;
- and
- a second external electrode on the second end surface;
- wherein
- the plurality of internal electrode layers include first internal electrode layers, second internal electrode layers, and intermediate electrode layers;
- each of the first internal electrode layers includes, at one end portion thereof, a first extension portion extending toward the first end surface and connected to the first external electrode, and a first counter portion connected to the first extension portion and opposed to a corresponding one of the intermediate electrode layers adjacent in the lamination direction;
- each of the second internal electrode layers includes, at one end portion thereof, a second extension portion extending toward the second end surface and connected to the second external electrode, and a second counter portion connected to the second extension portion and opposed to a corresponding one of the intermediate electrode layers adjacent in the lamination direction;
- each of the intermediate electrode layers is not connected to either of the first external electrode or the second external electrode, and includes a first electrode layer-side counter portion opposed to a corresponding one of the first internal electrode layers adjacent in the lamination direction, and a second electrode layer-side counter portion opposed to a corresponding one of the second internal electrode layers adjacent in the lamination direction;
- the first internal electrode layers, the intermediate electrode layers, and the second internal electrode layers define a series-connected capacitor element;
- the first counter portion includes a first region adjacent to the first end surface, and a second region adjacent to the second end surface and having a coverage higher than a coverage of the first region;
- the second counter portion includes a third region adjacent to the second end surface, and a fourth region adjacent to the first end surface and having a coverage higher than a coverage of the third region;
- the first electrode layer-side counter portion includes a fifth region adjacent to the first end surface, and a sixth region adjacent to the second end surface and having a coverage higher than a coverage of first region;
- and
- the second electrode layer-side counter portion includes a seventh region adjacent to the second end surface, and an eighth region adjacent to the first end surface and having a coverage higher than a coverage of the seventh region.
12 more elements
Dependencies are inferred from the claim text.