# US 12,224,124 B2 · Multilayer electronic component > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 12,224,124 B2 - Document ID: US12224124B2 - Status: Granted - Kind: B2 - Application number: 18/131,032 - Filed: 2023-04-05 - Published: 2024-06-20 - Granted: 2025-02-11 - Earliest claimed: 2022-12-14 - Assignees: Samsung Electro-Mechanics Co., Ltd. - Applicants: Samsung Electro-Mechanics Co., Ltd. - Inventors: Young Joon Oh; Jeong Ryeol Kim - Web page: https://patentgrep.com/patent/US12224124B2 ## CPC - H01G 4/1227: {based on alkaline earth titanates} - H01G 4/008: Selection of materials - H01G 4/012: Form of non-self-supporting electrodes - H01G 4/12: Ceramic dielectrics {(H01G4/085 takes precedence)} - H01G 4/1209: {characterised by the ceramic dielectric material (H01G4/1272, H01G4/1281 take precedence)} - H01G 4/224: Housing; Encapsulation - H01G 4/232: electrically connecting two or more layers of a stacked or rolled capacitor - H01G 4/2325: {characterised by the material of the terminals} - H01G 4/30: Stacked capacitors (H01G4/33 takes precedence) - H01G: CAPACITORS; CAPACITORS, RECTIFIERS, DETECTORS, SWITCHING DEVICES, LIGHT-SENSITIVE OR TEMPERATURE-SENSITIVE DEVICES OF THE ELECTROLYTIC TYPE (selection of specified materials as dielectric H01B3/00; capacitors having potential barriers H10D1/62, H10K10/10) ## Abstract A multilayer electronic component includes a body including a first dielectric layer and internal electrodes alternately disposed with the first dielectric layer interposed therebetween in a first direction; and external electrodes disposed on the body. The internal electrodes include body portions alternately disposed with the first dielectric layer in the first direction to form capacitance, and end portions extending from the body portions in the second direction. A region including the first dielectric layer and the body portions in the body is a capacitance forming portion. Regions disposed on one surface and the other surface of the capacitance forming portion in the second direction and including the end portions of the internal electrodes is first margin portions. The first margin portions are disposed between the end portions of the internal electrodes and include a second dielectric layer including Ta4AlC3. ## Claims ### Claim 1 A multilayer electronic component comprising: a body including a first dielectric layer and internal electrodes alternately disposed with the first dielectric layer interposed therebetween in a first direction, the body comprising first and second surfaces opposing each other in the first direction, third and fourth surfaces connected to the first and second surfaces and opposing each other in a second direction, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other in a third direction; and external electrodes disposed on the third and fourth surfaces, wherein: the internal electrodes include: body portions alternately disposed with the first dielectric layer in the first direction to form capacitance, and end portions extending from the body portions in the second direction, and a region including the first dielectric layer and the body portions in the body is a capacitance forming portion, regions disposed on one surface and the other surface of the capacitance forming portion in the second direction and including the end portions of the internal electrodes are first margin portions, and at least one of the first margin portions includes a second dielectric layer including Ta4AlC3, and the second dielectric layer is disposed between the end portions of the internal electrodes. ### Claim 2 (depends on 1) The multilayer electronic component of claim 1, wherein an average value of a number of pores per unit area of the second dielectric layer is smaller than an average value of a number of pores per unit area of the first dielectric layer. ### Claim 3 (depends on 1) The multilayer electronic component of claim 1, wherein an average thickness of the second dielectric layer is greater than an average thickness of the first dielectric layer. ### Claim 4 (depends on 3) The multilayer electronic component of claim 3, wherein the average thickness of the second dielectric layer is more than twice the average thickness of the first dielectric layer. ### Claim 5 (depends on 1) The multilayer electronic component of claim 1, wherein an end of at least one of the internal electrodes is substantially parallel to the second direction. ### Claim 6 (depends on 1) The multilayer electronic component of claim 1, wherein the third and fourth surfaces are substantially parallel to the first direction. ### Claim 7 (depends on 1) The multilayer electronic component of claim 1, wherein: at least one of the external electrodes includes an electrode layer disposed on the body and a plating layer disposed on the electrode layer, and the electrode layer includes Cu. ### Claim 8 (depends on 1) The multilayer electronic component of claim 1, wherein: the first dielectric layer includes a first oxide including Ba and Ti, the second dielectric layer includes a second oxide including Ba and Ti, and a content of Ta4AlC3 of the second dielectric layer is 20 wt % or more compared to the first and second oxides. ### Claim 9 (depends on 1) The multilayer electronic component of claim 1, wherein an end of at least one of the internal electrodes does not substantially include Ta4AlC3. ### Claim 10 (depends on 1) The multilayer electronic component of claim 1, wherein: the body further includes a second margin portion disposed on one surface and the other surface of the capacitance forming portion in the third direction, the second margin portion includes a third dielectric layer, and the third dielectric layer includes Ta4AlC3. ### Claim 11 (depends on 10) The multilayer electronic component of claim 10, wherein an average value of a number of pores per unit area of the third dielectric layer is smaller than an average value of a number of pores per unit area of the first dielectric layer. ### Claim 12 (depends on 10) The multilayer electronic component of claim 10, wherein the second margin portion does not include the internal electrodes. ### Claim 13 (depends on 10) The multilayer electronic component of claim 10, wherein an end of at least one of the body portions in the third direction is substantially parallel to the third direction. ### Claim 14 A multilayer electronic component comprising: a body including: a capacitance forming portion including: a first dielectric layer, and internal electrodes alternately disposed with the first dielectric layer interposed therebetween in a first direction, and a first margin portion disposed on opposing surfaces of the capacitance forming portion, the first margin portion including: a second dielectric layer including Ta4AlC3, and end portions of the internal electrodes; and external electrodes disposed on the body. ### Claim 15 (depends on 14) The multilayer electronic component of claim 14, wherein the second dielectric layer is disposed between end portions of the internal electrodes. ### Claim 16 (depends on 14) The multilayer electronic component of claim 14, wherein an average value of a number of pores per unit area of the second dielectric layer is smaller than an average value of a number of pores per unit area of the first dielectric layer. ### Claim 17 (depends on 14) The multilayer electronic component of claim 14, wherein an average thickness of the second dielectric layer is greater than an average thickness of the first dielectric layer. ### Claim 18 (depends on 17) The multilayer electronic component of claim 17, wherein the average thickness of the second dielectric layer is more than twice the average thickness of the first dielectric layer. ### Claim 19 (depends on 14) The multilayer electronic component of claim 14, wherein: the body comprises first and second surfaces opposing each other in the first direction, third and fourth surfaces connected to the first and second surfaces and opposing each other in a second direction, and fifth and sixth surfaces connected to the first to fourth surfaces and opposing each other in a third direction, and the end portions are substantially parallel to the second direction. ### Claim 20 (depends on 19) The multilayer electronic component of claim 19, wherein: the body further includes a second margin portion disposed on one surface and the other surface of the capacitance forming portion in the third direction, the second margin portion includes a third dielectric layer including Ta4AlC3. ### Claim 21 (depends on 20) The multilayer electronic component of claim 20, wherein the second margin portion does not include the internal electrodes. ### Claim 22 (depends on 14) The multilayer electronic component of claim 14, wherein the first dielectric layer does not substantially include Ta4AlC3.