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US 10,770,234 B2Granted
Multilayer capacitor
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsJung Min Kim, Bon Seok Koo, Chang Hak Choi, Hae Sol Kang, Ji Hye Han, Byung Woo Kang
Life of this patent
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Abstract
A multilayer capacitor may have a decreased equivalent series resistance (ESR) and improved warpage strength and reliability with conductive resin layers of external electrodes on surfaces where internal electrodes are exposed from a body, intermetallic compounds are in contact with conductive connecting portions of the conductive resin layers and the internal electrodes, and conductive connecting portions are in contact with a plurality of metal particles and second electrode layers.
Claims20
A multilayer capacitor comprising:
- a body, including a plurality of first and second internal electrodes alternately stacked with dielectric layers interposed therebetween, and having first and second surfaces opposing each other, third and fourth surfaces opposing each other and connected to the first and second surfaces, and fifth and sixth surfaces opposing each other, connected to the first and second surfaces, and connected to the third and fourth surfaces, the body including a plurality of first and second reduced-thickness portions respectively defined by the third and fourth surfaces and end portions of the first and second internal electrodes between adjacent dielectric layers, wherein the end portions of the first and second internal electrodes are exposed from the body through the first and second reduced-thickness portions, respectively;
- intermetallic compounds disposed in the first and second reduced-thickness portions and connected to the end portions of the first and second internal electrodes, respectively;
- and
- first and second external electrodes on the third and fourth surfaces of the body, respectively,
- wherein the first and second external electrodes include:
- conductive resin layers on the third and fourth surfaces of the body, respectively, and including a plurality of metal particles, conductive connecting portions surrounding the plurality of metal particles and in contact with the intermetallic compounds, and base resin;
- and
- first electrode layers on the respective conductive resin layers and in contact with the conductive connecting portions, and
- the first electrode layers are copper plating layers.
6 more elements
A multilayer capacitor comprising:
- a body, including a plurality of first and second internal electrodes alternately stacked with dielectric layers interposed therebetween, having first and second surfaces opposing each other, third and fourth surfaces opposing each other and connected to the first and second surfaces, and fifth and sixth surfaces opposing each other, connected to the first and second surfaces, and connected to the third and fourth surfaces, the body including a plurality of first and second reduced-thickness portions respectively defined by the third and fourth surfaces and end portions of the first and second internal electrodes between adjacent dielectric layers, wherein the dielectric layers are perpendicular to the third and fourth surfaces, and the end portions of the first and second internal electrodes are exposed from the body through the first and second reduced-thickness portions, respectively;
- intermetallic compounds disposed in the first and second reduced-thickness portions and connected to the end portions of the first and second internal electrodes, respectively;
- and
- first and second external electrodes on the third and fourth surfaces of the body, respectively,
- wherein the first and second external electrodes include:
- conductive resin layers disposed on the third and fourth surfaces of the body, respectively, and including a plurality of metal particles, conductive connecting portions surrounding the plurality of metal particles and in contact with the intermetallic compounds, and base resin;
- and
- first electrode layers on the respective conductive resin layers and in contact with the conductive connecting portions, and
- wherein a material of the first and second internal electrodes is different from a material of the respective first electrode layers of the first and second external electrodes.
6 more elements
Dependencies are inferred from the claim text.