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US 11,145,463 B2Granted
Multilayer capacitor
AssigneeSamsung Electro-Mechanics Co., Ltd.
InventorsByeong Gyu Park, Yong Jin Yun, So Ra Kang, Jung Min Park, Jea Yeol Choi
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Abstract
A multilayer capacitor includes a body, a plurality of internal electrodes, and an external electrode. A cover portion of the body has curved corners, and a radius of curvature, R, of each of the curved corners and a thickness, T, of the body satisfy a condition of 10 μm≤R≤T/3, and a width, W, and a thickness, T, of the body satisfy a condition of T/W<0.8.
Claims22
A multilayer capacitor, comprising:
- a body including a stack structure of a plurality of dielectric layers, and a plurality of internal electrodes stacked with the plurality of dielectric layers interposed therebetween;
- and
- external electrodes disposed on an external portion of the body and connected to the plurality of internal electrodes,
- wherein the body includes an active portion in which the plurality of internal electrodes are disposed to form capacitance, and an upper cover and a lower cover portion disposed on an upper portion and a lower portion of the active portion in a layering direction of the plurality of dielectric layers, respectively,
- wherein the body includes a first surface and a second surface exposing the plurality of internal electrodes and opposing each other in a length direction of the body, a third surface and a fourth surface opposing each other in the layering direction of the plurality of dielectric layers, and a fifth surface and a sixth surface connected to the first to fourth surfaces and opposing each other in a width direction of the body,
- wherein each of the upper and lower cover portions of the body has curved corners,
- wherein a radius of curvature, R, of a curved corner, in a width direction-layering direction plane, among the curved corners, and a thickness, T, of the body satisfy 10 μm<R<T/3,
- wherein a width, W, and a thickness, T, of the body satisfy T/W<0.8,
- wherein the radius of curvature, R, of the curved corner, in the layering direction-width direction plane, among the curved corners, is greater than a radius of curvature of a curved corner, in a length direction-layering direction, among the curved corners.
6 more elements
A multilayer capacitor, comprising:
- a body including a stack structure of a plurality of dielectric layers, and a plurality of internal electrodes stacked with the plurality of dielectric layers interposed therebetween;
- and
- external electrodes disposed on an external portion of the body and connected to the plurality of internal electrodes,
- wherein the body includes an active portion in which the plurality of internal electrodes are disposed to form capacitance, and an upper cover and a lower cover portion disposed on an upper portion and a lower portion of the active portion in a layering direction of the plurality of dielectric layers, respectively,
- wherein the body includes a first surface and a second surface exposing the plurality of internal electrodes and opposing each other, a third surface and a fourth surface opposing each other in the layering direction of the plurality of dielectric layers, and a fifth surface and a sixth surface connected to the first to fourth surfaces and opposing each other,
- wherein each of the upper and lower cover portions of the body has curved corners, and a radius of curvature, R, of one of the curved corners and a thickness, T, of the body satisfy 10 μm≤R≤T/3,
- wherein a width, W, and a thickness, T, of the body satisfy T/W<0.8,
- wherein, an outer region of the body surrounding the plurality of internal electrodes is defined as a margin region, and density of dielectric layers in the margin region is less than density of the plurality of dielectric layers, and
- wherein the margin region includes a plurality of needle-type pores.
6 more elements
A multilayer capacitor, comprising:
- a body including an active portion in which first and second internal electrodes are disposed with first dielectric layers disposed therebetween, the first and second internal electrodes exposed from first and second end surfaces of the active region, respectively;
- and
- first and second external electrodes disposed on the first and second end surfaces of the active region and connected to the first and second internal electrodes, respectively,
- wherein the body further includes second dielectric layers as a margin portion surrounding the active portion except the first and second end surfaces of the active portion,
- wherein the body includes a third surface and a fourth surface opposing each other in a layering direction of the first dielectric layers, and a fifth surface and a sixth surface connected to the third and fourth surfaces and opposing each other,
- wherein corners of the margin portion at which the third surface is connected to the fifth surface and the sixth surface, and corners of the margin portion at which the fourth surface is connected to the fifth surface and the sixth surface are curved,
- wherein a radius of curvature, R, of one of the curved corners and a thickness, T, of the body satisfy 10 μm≤R≤T/3,
- wherein a width, W, and a thickness, T, of the body satisfy T/W<0.8,
- wherein the thickness T of the body is 100 to 400 μm, and
- wherein R is equal to or greater than a margin, Wg, from the fifth surface to the plurality of internal electrodes or from the sixth surface to the plurality of internal electrodes.
7 more elements
Dependencies are inferred from the claim text.