# US 11,443,894 B2 · Coil component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,443,894 B2 - Document ID: US11443894B2 - Status: Granted - Kind: B2 - Application number: 16/783,540 - Filed: 2020-02-06 - Published: 2021-01-21 - Granted: 2022-09-13 - Earliest claimed: 2019-07-17 - Assignees: Samsung Electro-Mechanics Co., Ltd. - Applicants: Samsung Electro-Mechanics Co., Ltd. - Inventors: Dong Hwan Lee; Chan Yoon; Dong Jin Lee; Young Ghyu Ahn - Web page: https://patentgrep.com/patent/US11443894B2 ## CPC - H01F 27/292: {Surface mounted devices} - H01F 27/36: Electric or magnetic shields or screens (movable for varying inductance H01F21/10) - H01F 17/0013: {with stacked layers} - H01F 17/04: with magnetic core - H01F 27/24: Magnetic cores - H01F 27/2804: {Printed windings} - H01F 27/29: Terminals; Tapping arrangements {for signal inductances} - H01F 27/323: {Insulation between winding turns, between winding layers} - H01F 27/363: {made of electrically conductive material} - H01F 41/041: {Printed circuit coils (apparatus or processes for manufacturing printed circuits in general H05K3/00)} - H01F 27/2809: {on stacked layers} - H01F 2017/008: {Electric or magnetic shielding of printed inductances} - H01F 2017/048: {with encapsulating core, e.g. made of resin and magnetic powder} - H01F: MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES ## Abstract A coil component includes a body, a support substrate buried in the body, a coil portion disposed on at least one surface of the support substrate and having both ends exposed to a surface of the body, a noise removing portion disposed on the at least one surface of the support substrate, spaced apart from the coil portion, and forming an open loop such that one end of the noise removing portion is exposed to a surface of the body, an insulating layer disposed between the coil portion and the noise removing portion, first and second external electrodes disposed on a surface of the body and connected to both ends of the coil portion, respectively, and a third external electrode disposed on a surface of the body and connected to the one end of the noise removing portion. ## Claims ### Claim 1 A coil component, comprising: a body; a support substrate buried in the body; a coil portion disposed on at least one surface of the support substrate and having both ends exposed from the body; a noise removing portion disposed on the at least one surface of the support substrate, spaced apart from the coil portion, and having an open loop such that one end of the noise removing portion is exposed from the body; an insulating layer disposed between the coil portion and the noise removing portion; first and second external electrodes disposed on the body and connected to both ends of the coil portion, respectively; and a third external electrode disposed on the body and connected to the one end of the noise removing portion. ### Claim 2 (depends on 1) The coil component of claim 1, wherein the noise removing portion is disposed to correspond to a region in which the coil portion is disposed. ### Claim 3 (depends on 1) The coil component of claim 1, wherein the noise removing portion has a ring shape including a slit. ### Claim 4 (depends on 1) The coil component of claim 1, wherein the slit separates the one end of the noise removing portion and another end of the noise removing portion from each other. ### Claim 5 (depends on 1) The coil component of claim 1, wherein each of the coil portion and the noise removing portion has a planar spiral form. ### Claim 6 (depends on 5) The coil component of claim 5, wherein the coil portion and the noise removing portion have the same coiling direction from an innermost turn to an outermost turn. ### Claim 7 (depends on 1) The coil component of claim 1, further comprising: an insulating film disposed along a surface of the coil portion and disposed between the coil portion and the insulating layer. ### Claim 8 (depends on 1) The coil component of claim 1, further comprising: an insulating film disposed along a surface of the noise removing portion and disposed between the noise removing portion and the body. ### Claim 9 (depends on 1) The coil component of claim 1, wherein the coil portion includes first and second coil patterns disposed on both surfaces of the support substrate opposing each other, respectively, and each having a planar spiral form, and wherein the noise removing portion includes first and second noise removing patterns disposed on the first and second coil patterns, respectively, and each having an open loop. ### Claim 10 (depends on 9) The coil component of claim 9, wherein at least one of the first and second noise removing patterns has a ring shape including a slit. ### Claim 11 (depends on 9) The coil component of claim 9, wherein at least one of the first and second noise removing patterns has a planar spiral form. ### Claim 12 (depends on 9) The coil component of claim 9, further comprising: a fourth external electrode disposed on a surface of the body and spaced apart from the first to third external electrodes, wherein one end of the first noise removing pattern is connected to the third external electrode, and wherein one end of the second noise removing pattern is connected to the fourth external electrode. ### Claim 13 (depends on 12) The coil component of claim 12, wherein the third external electrode and the fourth external electrode are in contact with and connected to each other on another surface of the body. ### Claim 14 (depends on 12) The coil component of claim 12, wherein the body has one surface and another surface opposing each other, front and rear surfaces connecting the one surface and the another surface and opposing each other, and side surfaces connecting the front and rear surfaces of the body and opposing each other, wherein the first and second external electrodes are disposed on the front and rear surfaces of the body, respectively, and wherein the third and fourth external electrodes are disposed on the side surfaces of the body, respectively. ### Claim 15 (depends on 9) The coil component of claim 9, further comprising: a fourth external electrode disposed on a surface of the body and spaced apart from the first to third external electrodes, wherein the first and second noise removing patterns are connected to the third external electrode, and wherein the fourth external electrode is spaced apart from the coil portion and the first and second noise removing patterns. ### Claim 16 (depends on 9) The coil component of claim 9, further comprising: a fourth external electrode disposed on a surface of the body and spaced apart from the first to third external electrodes, wherein among the third and fourth external electrodes, the first noise removing pattern is connected to only the third external electrode, and wherein among the third and fourth external electrodes, the second noise removing pattern is connected to only the fourth external electrode. ### Claim 17 (depends on 1) The coil component of claim 1, wherein the noise removing portion includes first and second noise removing patterns disposed on surfaces of the support substrate opposing each other, respectively, and each having an open loop, and wherein the coil portion includes first and second coil patterns disposed on the first and second noise removing patterns, respectively, and each having a planar spiral form, and the coil portion further includes a via penetrating the insulating layer and the support substrate to connect the first and second coil patterns. ### Claim 18 (depends on 1) The coil component of claim 1, wherein the noise removing portion is composed of a conductive material. ### Claim 19 A coil component, comprising: a body and a support substrate buried in the body; a coil portion disposed on at least one surface of the support substrate and including a coil pattern having a planar spiral form; a noise removing portion disposed on at least one surface of the support substrate, spaced apart from the coil portion, and including an open loop with a slit; an insulating layer disposed between the coil portion and the noise removing portion; first and second external electrodes disposed on a surface of the body and connected to both ends of the coil portion, respectively; and a third external electrode disposed on another surface of the body and connected to one end of the noise removing portion. ### Claim 20 A coil component, comprising: a body and a support substrate buried in the body; a coil portion disposed on at least one surface of the support substrate and including a coil pattern having a planar spiral form; a noise removing portion having a planar spiral form, disposed on at least one surface of the support substrate, and spaced apart from the coil portion; an insulating layer disposed between the coil portion and the noise removing portion; first and second external electrodes disposed on a surface of the body and connected to both ends of the coil portion, respectively; and a third external electrode disposed on another surface of the body and connected to one end of the noise removing portion. ### Claim 21 (depends on 20) The coil component of claim 20, wherein each of the coil pattern and the noise removing portion has a plurality of turns, and wherein the coil pattern and the noise removing portion have the same coiling direction from an innermost turn to an outermost turn. ### Claim 22 A coil component, comprising: a body; a coil portion embedded in the body and having an end exposed from the body; a noise removing portion embedded in the body and spaced apart from the coil portion, the noise removing portion having an open loop including a first end exposed from the body and a second end embedded in the body; a first external electrode disposed on the body and connected to the end of coil portion; and a second external electrode disposed on the body and connected to the first end of the noise removing portion. ### Claim 23 (depends on 22) The coil component of claim 22, wherein the noise removing portion is exposed from the body only through the first end. ### Claim 24 (depends on 22) The coil component of claim 22, wherein the noise removing portion includes a slit. ### Claim 25 (depends on 24) The coil component of claim 24, wherein the slit separates the first and second ends from each other. ### Claim 26 (depends on 22) The coil component of claim 22, wherein each of the coil portion and the noise removing portion has a planar spiral form. ### Claim 27 A coil component, comprising: a magnetic body; a coil portion embedded in the magnetic body and having ends exposed from the magnetic body; an insulating layer embedded in the magnetic body; a noise removing portion embedded in the magnetic body and spaced apart from the coil portion; an insulating layer disposed between the coil portion and the noise removing portion; first and second external electrodes disposed on the magnetic body and connected to the ends of the coil portion, respectively; and a third external electrode disposed on the magnetic body and connected to one end of the noise removing portion, wherein the noise removing portion is in direct contact with the insulating layer. ### Claim 28 (depends on 27) The coil component of claim 27, wherein the noise removing portion has an open loop such that the one end of the noise removing portion is exposed from the magnetic body. ### Claim 29 (depends on 27) The coil component of claim 27, further comprising: a support substrate buried in the body, wherein the noise removing portion is disposed between the support substrate and the insulating layer. ### Claim 30 (depends on 27) The coil component of claim 27, further comprising: a support substrate buried in the body, wherein the insulating layer is disposed between the support substrate and the noise removing portion.