# US 12,014,866 B2 · Coil electronic component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,014,866 B2 - Document ID: US12014866B2 - Status: Granted - Kind: B2 - Application number: 17/948,656 - Filed: 2022-09-20 - Published: 2023-01-19 - Granted: 2024-06-18 - Earliest claimed: 2017-10-18 - Assignees: Samsung Electro-Mechanics Co., Ltd. - Applicants: Samsung Electro-Mechanics Co., Ltd. - Inventors: Young Il Lee; Han Wool Ryu; Sang Kyun Kwon - Web page: https://patentgrep.com/patent/US12014866B2 ## CPC - H01F 27/324: {Insulation between coil and core, between different winding sections, around the coil; Other insulation structures} - C23C 16/45555: {applied in non-semiconductor technology} - H01F 1/147: Alloys characterised by their composition {(treatment thereof for enhancing their electromagnetic properties C21D8/12)} - H01F 1/26: by macromolecular organic substances - H01F 17/0013: {with stacked layers} - H01F 17/04: with magnetic core - H01F 27/255: made from particles (H01F27/26 takes precedence) - H01F 27/29: Terminals; Tapping arrangements {for signal inductances} - H01F 27/292: {Surface mounted devices} - C23C 16/403: {of aluminium, magnesium or beryllium} - C23C 16/45525: {Atomic layer deposition [ALD]} - H01F 1/33: mixtures of metallic and non-metallic particles; metallic particles having oxide skin - H01F 41/0246: {Manufacturing of magnetic circuits by moulding or by pressing powder (magnetic cores made by moulding or by pressing powder H01F27/255; soft magnetic particles H01F1/20, H01F1/36)} - 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 - C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04) ## Abstract A coil electronic component includes a body including an insulator; a coil portion embedded in the body; aggregates dispersed in the insulator, where the aggregates each comprise a plurality of magnetic particles, coating layers formed on surfaces of the aggregates using an insulating material, and external electrodes connected to the coil portion. ## Claims ### Claim 1 A coil electronic component comprising: a body including an insulator; a coil portion embedded in the body; aggregates dispersed in the insulator, where the aggregates each comprise a plurality of magnetic particles directly contacting each other; coating layers formed on respective surfaces of the aggregates; and external electrodes connected to the coil portion, wherein at least one coating layer is formed in accordance with the surface of at least one of the aggregates, and wherein the at least one of the aggregates includes an aggregated region of magnetic particles which is devoid of the at least one coating layer. ### Claim 2 (depends on 1) The coil electronic component of claim 1, wherein at least one of the aggregates has a porous structure. ### Claim 3 (depends on 1) The coil electronic component of claim 1, wherein at least one of the coating layers has a thickness of 1 μm or less. ### Claim 4 (depends on 1) The coil electronic component of claim 1, wherein at least one of the coating layers is formed of alumina. ### Claim 5 (depends on 1) The coil electronic component of claim 1, wherein the insulator and at least one of the coating layers are formed of different materials. ### Claim 6 (depends on 5) The coil electronic component of claim 5, wherein the insulator includes an insulating resin, and at least one of the coating layers is formed of ceramic. ### Claim 7 (depends on 5) The coil electronic component of claim 5, wherein the insulator and at least one of the coating layers are formed of different ceramic materials. ### Claim 8 (depends on 1) The coil electronic component of claim 1, wherein the insulator and at least one of the coating layers are formed in an integral structure using the same material. ### Claim 9 (depends on 8) The coil electronic component of claim 8, wherein the insulator and at least one of the coating layers are formed of alumina. ### Claim 10 (depends on 1) The coil electronic component of claim 1, wherein the magnetic particles are electrically conductive. ### Claim 11 (depends on 10) The coil electronic component of claim 10, wherein the magnetic particles comprise an Fe-based alloy. ### Claim 12 (depends on 1) The coil electronic component of claim 1, wherein at least one of the coating layers is formed of an insulating material.