# US 2023/0054091 A1 · Coil component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2023/0054091 A1 - Document ID: US20230054091A1 - Status: Published application - Kind: A1 - Application number: 17/735,375 - Filed: 2022-05-03 - Published: 2023-02-23 - Earliest claimed: 2021-08-18 - Assignees: Samsung Electro-Mechanics Co., Ltd. - Applicants: Samsung Electro-Mechanics Co., Ltd. - Inventors: Hyung Ho Kim; Sung Jin Park; Jin Hwan Kim - Web page: https://patentgrep.com/patent/US20230054091A1 ## CPC - H01F 27/29: Terminals; Tapping arrangements {for signal inductances} - H01F 27/292: {Surface mounted devices} - H01F 17/043: {with two, usually identical or nearly identical parts enclosing completely the coil (pot cores)} - H01F 17/045: {with core of cylindric geometry and coil wound along its longitudinal axis, i.e. rod or drum core} - H01F 27/022: {Encapsulation} - H01F 27/2828: {Construction of conductive connections, of leads} - H01F 27/2847: {Sheets; Strips (H01F27/2866 takes precedence)} - 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 including a molded portion having one surface and the other surface opposing each other, and a cover portion disposed on the one surface of the molded portion; a wound coil disposed between the molded portion and the cover portion in the body, and having first and second lead-out portions extending to one surface of the body; a first recess portion disposed in the one surface of the body; a first external electrode disposed on the one surface of the body to be connected to the first lead-out portion, and disposed along a surface of the first recess portion to have a first groove disposed therein; and a second external electrode disposed on the one surface of the body and connected to the second lead-out portion. ## Claims ### Claim 1 A coil component comprising: a body including a molded portion having one surface and the other surface opposing each other, and a cover portion disposed on the one surface of the molded portion; a wound coil disposed between the molded portion and the cover portion in the body, and having first and second lead-out portions extending to one surface of the body while being spaced apart from each other; a first recess portion disposed in the one surface of the body; a first external electrode disposed on the one surface of the body to be connected to the first lead-out portion, and disposed along a surface of the first recess portion to have a first groove disposed therein; and a second external electrode disposed on the one surface of the body while being spaced apart from the first external electrode and connected to the second lead-out portion. ### Claim 2 (depends on 1) The coil component of claim 1, further comprising a second recess portion disposed in the one surface of the body, wherein the second external electrode is disposed along a surface of the second recess portion to have a second groove disposed therein. ### Claim 3 (depends on 2) The coil component of claim 2, wherein each of the first and second grooves has a shape of a straight line perpendicular to each of the first and second external electrodes disposed parallel to each other. ### Claim 4 (depends on 3) The coil component of claim 3, wherein the first or second groove has a cross-sectional area of its inner surface smaller than a cross-sectional area of its outer surface, based on a cross section parallel to the one surface of the body. ### Claim 5 (depends on 4) The coil component of claim 4, wherein the first or second groove has a cross section in a shape of an arc convex toward the one surface of the molded portion, based on a cross section perpendicular to the one surface of the body and parallel to the first or second external electrode. ### Claim 6 (depends on 2) The coil component of claim 2, further comprising a third recess portion positioned in an extension line in which the first recess portion and the second recess portion are connected to each other on the one surface of the body. ### Claim 7 (depends on 2) The coil component of claim 2, wherein the first and second recess portions are disposed between a region of the one surface of the body, where the first and second lead-out portions are exposed and a region of the one surface of the body, where the other surface of the molded portion is exposed. ### Claim 8 (depends on 7) The coil component of claim 7, wherein the wound coil further includes a wound portion having at least one turn, and first and second bent portions respectively connecting the wound portion and the first and second lead-out portions to each other, and the first and second bent portions are respectively disposed above the first and second recess portions, in the body. ### Claim 9 (depends on 8) The coil component of claim 8, wherein an inclined surface close to each of the first and second lead-out portions among cross sections of the first and second recess portions, has an inclined direction coincident with a direction from one end of the first or second bent portion, connected to the wound portion, to the other end connected to the first or second lead-out portion, based on the cross section perpendicular to the one surface of the body and parallel to the first or second external electrode. ### Claim 10 (depends on 1) The coil component of claim 1, wherein the first recess portion is disposed between a region of the one surface of the body, where the first lead-out portion is exposed and a region of the one surface of the body, where the other surface of the molded portion is exposed. ### Claim 11 (depends on 1) The coil component of claim 1, wherein the wound coil further includes a wound portion having at least one turn, and first and second bent portions respectively connecting the wound portion and the first and second lead-out portions to each other, and the first and second bent portions are respectively disposed above the first and second recess portions, in the body. ### Claim 12 (depends on 11) The coil component of claim 11, wherein an inclined surface close to each of the first and second lead-out portions among cross sections of the first and second recess portions, has an inclined direction coincident with a direction from one end of the first or second bent portion, connected to the wound portion, to the other end connected to the first or second lead-out portion, based on the cross section perpendicular to the one surface of the body and parallel to the first or second external electrode. ### Claim 13 (depends on 11) The coil component of claim 11, wherein the molded portion includes a base portion having one surface and the other surface opposing each other, and a core disposed at a center of the one surface of the base portion and passing through the wound coil. ### Claim 14 (depends on 13) The coil component of claim 13, wherein the base portion includes: a first receiving groove through which the first bent portion passes and in contact with the first external electrode, and a second receiving groove through which the second bent portion passes and in contact with the second external electrode. ### Claim 15 (depends on 14) The coil component of claim 14, wherein the same magnetic material as that of the cover portion is disposed in the first or second receiving groove. ### Claim 16 (depends on 1) The coil component of claim 1, wherein the first groove has a cross-sectional area of its inner surface smaller than a cross-sectional area of its outer surface, based on a cross section parallel to the one surface of the body. ### Claim 17 (depends on 16) The coil component of claim 16, wherein the first groove has a cross section in a shape of an arc convex toward the one surface of the molded portion, based on a cross section perpendicular to the one surface of the body and parallel to the first or second external electrode. ### Claim 18 (depends on 1) The coil component of claim 1, wherein each of the molded portion and the cover portion includes a magnetic material, and the molded portion has a magnetic material filling rate higher than that of the cover portion. ### Claim 19 (depends on 1) The coil component of claim 1, wherein the wound coil includes a conductive metal, and has the remainder covered with an insulating covering layer, except for a portion in contact with the first or second external electrode. ### Claim 20 (depends on 1) The coil component of claim 1, wherein the first recess is recessed in the cover portion.