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US 2020/0027661 A1Published application
Multilayer capacitor
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsByeong Gyu PARK, Yong Jin YUN, So Ra KANG, Jae Yeol CHOI
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Abstract
A multilayer capacitor includes a body and external electrodes on external surfaces of the body. The body includes a plurality of internal electrodes alternately laminated with dielectric layers. The external electrodes are electrically connected to the internal electrodes. Edges of cover portions of the body are rounded. The rounded edges have a radius of curvature R and the body has a thickness T, such that R and T satisfy 10 μm≤R≤T/4. Among the plurality of internal electrodes, an internal electrode in each of the cover portions has a width less than that of an internal electrode of the central portion.
Claims29
A multilayer capacitor comprising:
- a body including a plurality of internal electrodes alternately laminated with dielectric layers interposed therebetween;
- and
- external electrodes on external surfaces of the body and electrically connected to respective internal electrodes of the plurality of internal electrodes,
- wherein the body includes a central portion, an upper cover portion above the central portion in a lamination direction of the plurality of the dielectric layers, and a lower cover portion below the central portion in the lamination direction,
- wherein the upper and lower cover portions each have rounded edges,
- wherein the body has a thickness T in the lamination direction and each of the rounded edges has a respective radius of curvature R that satisfies 10 μm≤R≤T/4, and
- wherein a first internal electrode in the upper cover portion has a first width in a width direction, substantially perpendicular to the lamination direction, a second internal electrode in the lower cover portion has a second width in the lamination direction, a third internal electrode in the central portion has a third width in the laminations direction, and the first and second widths are each less than the third width.
4 more elements
A multilayer capacitor comprising:
- a body including a plurality of internal electrodes alternately laminated with dielectric layers interposed therebetween;
- and
- external electrodes on external surfaces of the body and electrically connected to respective internal electrodes of the plurality of internal electrodes,
- wherein the body is includes a central portion, an upper cover portion above the central portion in a lamination direction of the plurality of the dielectric layers, and a lower cover portion below the central portion in the lamination direction,
- wherein the upper and lower cover portions of the body each have rounded edges, and
- wherein a virtual surface defined by end portions of the plurality of internal electrodes in the upper and lower cover portions of the body has rounded edges.
3 more elements
A multilayer capacitor comprising:
- a body comprising a plurality of internal electrodes laminated with dielectric layers therebetween and including:
- a central portion with first and second side surfaces, opposing each other in a width direction perpendicular to a lamination direction of the internal electrodes and substantially flat,
- an upper cover portion above the central portion in the lamination direction and with first and second side surfaces that are curved from the respective first and second side surfaces of the central portion to an upper surface of the body in the lamination direction, and
- a lower cover portion below the central portion in the lamination direction and with first and second side surfaces that are curved from the respective first and second side surfaces of the central portion to a lower surface of the body in the lamination direction;
- and
- an external electrode on the body and electrically connected to the plurality of internal electrodes,
- wherein the body has a first thickness in the lamination direction, the upper cover portion has a second thickness in the lamination direction, and the lower cover portion has a third thickness in the lamination direction, and the second a third thicknesses are each less than or equal to one-fourth the first thickness, and
- wherein the central portion includes first internal electrodes, of the plurality of internal electrodes, with substantially equal widths in the width direction, and the upper and lower cover portions respectively include second and third internal electrodes, of the plurality of internal electrodes, with widths less than those of the first internal electrodes.
5 more elements
A multilayer capacitor comprising:
- a body comprising an internal electrode region, including a plurality of internal electrodes laminated with dielectric layers therebetween, where a surface of the internal electrode region is defined by endpoints of the internal electrodes, and a margin region, surrounding the internal electrode region in a lamination direction and a width direction substantially perpendicular to the lamination direction;
- and
- an external electrode on the body and electrically connected to the plurality of internal electrodes,
- wherein the surface of the internal electrode region includes rounded edges,
- wherein the margin region has a first thickness Wg between the surface of the internal electrode region and a side surface of the body, substantially parallel to the lamination direction, and a second thickness δ between the surface of the internal electrode region at one of the rounded edges and a nearest point on a surface of the body, and the first and second thicknesses satisfy 1≤δ/Wg≤1.2.
2 more elements
Dependencies are inferred from the claim text.