Patents by Inventor Chang Hak Choi
Chang Hak Choi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 12278053Abstract: A ceramic electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains. The grain boundary includes a secondary phase including Sn, a rare-earth element, and a first subcomponent. The rare-earth element includes at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La, Gd and Yb. The first subcomponent includes at least one of Si, Mg, and Al.Type: GrantFiled: December 6, 2023Date of Patent: April 15, 2025Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jin Woo Kim, Chang Hak Choi, Seok Hyun Yoon, Ki Yong Lee, Jong Myeong Jeon
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Patent number: 12266479Abstract: A multilayer electronic component has a body and a non-conductive resin layer. The non-conductive resin layer includes a body cover portion disposed in a region of an external surface of the body in which an electrode layer of an external electrode is not disposed, and an extending portion extending from the body cover portion between the electrode layer and a conductive resin layer of the external electrode, to thereby suppress arc discharge, improve bending strength, and improve moisture resistance.Type: GrantFiled: February 13, 2024Date of Patent: April 1, 2025Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Seok Yi, Jung Min Kim, Bon Seok Koo, Chang Hak Choi, Il Ro Lee, Byung Woo Kang, San Kyeong, Hae Sol Kang
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Patent number: 12260992Abstract: A multilayer ceramic electronic component includes: a ceramic body including a dielectric layer having a main component represented by (Ba1-xCax)(Ti1-y (Zr, Hf)y)O3 (where, 0?x?1, 0?y?0.5), and including first and second internal electrodes alternately stacked with the dielectric layer interposed therebetween; a first external electrode connected to the first internal electrode; and a second external electrode connected to the second internal electrode, wherein at least one of the dielectric layer and the internal electrode includes Sn or Dy. If Sn, an average content of Sn at an interface between the dielectric layer and the internal electrode is within a range of 5 at % or more and 20 at % or less. If Dy, an average content of Dy at an interface between the dielectric layer and the internal electrode is within a range of 1 at % or more and 5 at % or less.Type: GrantFiled: May 22, 2024Date of Patent: March 25, 2025Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Kyung Ryul Lee, Jong Suk Jeong, Chang Hak Choi
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Patent number: 12230443Abstract: A multilayer electronic component includes a body including dielectric layers and internal electrodes alternately disposed with the dielectric layers and external electrodes disposed on the body and connected to the internal electrodes. The one of the internal electrodes includes Ni, Ba, Ti, O, and Tb, and a content of Tb relative to a sum of contents of Ni, Ba, Ti, O, and Tb is 0.45 to 3.0 wt %.Type: GrantFiled: June 15, 2023Date of Patent: February 18, 2025Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Min Jung Cho, Byung Kun Kim, Yu Hong Oh, Chang Hak Choi
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Patent number: 12173393Abstract: An Fe-based nanocrystalline alloy is represented by Composition Formula, (Fe(1-a)M1a)100-b-c-d-e-gM2bBcPdCueM3g, where M1 is at least one element selected from the group consisting of Co and Ni, M2 is at least one element selected from the group consisting of Nb, Mo, Zr, Ta, W, Hf, Ti, V, Cr, and Mn, M3 is at least two elements selected from the group consisting of C, Si, Al, Ga, and Ge but necessarily includes C, and 0?a?0.5, 1.5<b?3, 10?c?13, 0<d?4, 0<e?1.5, and 8.5?g?12.Type: GrantFiled: January 9, 2023Date of Patent: December 24, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sang Kyun Kwon, Han Wool Ryu, Chul Min Sim, Chang Hak Choi, Jong Suk Jeong
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Patent number: 12148574Abstract: A multilayer capacitor includes a capacitor body including a dielectric layer and a plurality of internal electrodes, and external electrodes disposed on both ends of the capacitor body and connected to exposed portions of the plurality of internal electrodes, respectively. Each of the external electrodes includes a conductive layer disposed on the capacitor body to be connected to one or more of the plurality of internal electrodes, a conductive resin layer covering the conductive layer, and including a plurality of metal particles, a plurality of elastic fine powder particles each having an elastic powder particle and a metal film plated on a surface of the elastic powder particle, and a conductive resin surrounding the plurality of metal particles and the plurality of elastic fine powder particles and contacting the conductive layer, and a plating layer covering the conductive resin layer.Type: GrantFiled: August 30, 2023Date of Patent: November 19, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: San Kyeong, Chang Hak Choi, Jae Seok Yi, Bon Seok Koo, Jung Min Kim, Hae Sol Kang, Jun Hyeon Kim
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Publication number: 20240363286Abstract: A multilayer ceramic electronic component includes: a ceramic body including a dielectric layer having a main component represented by (Ba1-xCax)(Ti1-y (Zr, Hf)y)O3 (where, 0?x?1, 0?y?0.5), and including first and second internal electrodes alternately stacked with the dielectric layer interposed therebetween; a first external electrode connected to the first internal electrode; and a second external electrode connected to the second internal electrode, wherein at least one of the dielectric layer and the internal electrode includes Sn or Dy. If Sn, an average content of Sn at an interface between the dielectric layer and the internal electrode is within a range of 5 at % or more and 20 at % or less. If Dy, an average content of Dy at an interface between the dielectric layer and the internal electrode is within a range of 1 at % or more and 5 at % or less.Type: ApplicationFiled: May 22, 2024Publication date: October 31, 2024Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Kyung Ryul Lee, Jong Suk Jeong, Chang Hak Choi
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Publication number: 20240312713Abstract: A multilayer electronic component includes a body including a dielectric layer including Ba and Ti and an internal electrode alternately disposed with the dielectric layer, and including first and second surfaces opposing each other in a 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; a side margin portion disposed on the fifth and sixth surfaces; and external electrodes disposed on the third and fourth surfaces, wherein the side margin portion includes Sn and a transition metal, and wherein, in the side margin portion, a mole ratio of transition metal to Sn is 10 or more.Type: ApplicationFiled: February 22, 2024Publication date: September 19, 2024Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Dae Hee LEE, Seung Min KANG, Hong Seok KIM, Chang Hak CHOI
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Patent number: 12087511Abstract: A multilayer ceramic capacitor includes a ceramic body including a dielectric layer and including first and second surfaces opposing each other, third and fourth surfaces connecting the first and second surfaces. A plurality of internal electrodes is disposed inside the ceramic body, connected to the first and second surfaces, and have one ends connected to the third and fourth surfaces. First and second side margin parts are disposed on end portions of the internal electrodes connected to the first and second surfaces. The ceramic body includes an active portion forming capacitance by including the plurality of internal electrodes disposed to oppose each other with the dielectric layer interposed therebetween. An average Sn content in a region adjacent to the side margin part of the active portion is greater than an average Sn content in a central region of the active portion.Type: GrantFiled: June 29, 2022Date of Patent: September 10, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jong Myeong Jeon, Ki Yong Lee, Jin Woo Kim, Chang Hak Choi
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Patent number: 12068113Abstract: A dielectric ceramic composition includes a base material main component of barium titanate and a subcomponent. A microstructure of the dielectric ceramic composition after sintering includes a first grain having a Ca content of less than 3.5 at % and a second grain having a Ca content of 3.5 to 13.5 at %, and an area ratio of the second grain to an area of the total grains is 70% to 95%.Type: GrantFiled: June 27, 2023Date of Patent: August 20, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Seok Hyun Yoon, Chan Hee Nam, Song Je Jeon, Chang Hak Choi
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Patent number: 12033805Abstract: A multilayer electronic component includes a body including a plurality of dielectric layers and internal electrodes, external electrodes disposed on the body to be connected to the internal electrodes, and a metal oxide disposed between the body and the external electrodes. The metal oxide includes calcium (Ca), zinc (Zn), and silicon (Si), and further includes at least one selected from the group consisting of barium (Ba), boron (B), and aluminum (Al).Type: GrantFiled: October 19, 2022Date of Patent: July 9, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Seon Ho Park, Jae Seok Yi, Moon Soo Park, Chang Hak Choi
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Patent number: 12020866Abstract: A multilayer ceramic electronic component includes: a ceramic body including a dielectric layer having a main component represented by (Ba1-xCax) (Ti1-y(Zr, Hf)y)O3 (where, 0?x?1, 0?y?0.5), and including first and second internal electrodes alternately stacked with the dielectric layer interposed therebetween; a first external electrode connected to the first internal electrode; and a second external electrode connected to the second internal electrode, wherein at least one of the dielectric layer and the internal electrode includes Sn or Dy. If Sn, an average content of Sn at an interface between the dielectric layer and the internal electrode is within a range of 5 at % or more and 20 at % or less. If Dy, an average content of Dy at an interface between the dielectric layer and the internal electrode is within a range of 1 at % or more and 5 at % or less.Type: GrantFiled: January 14, 2022Date of Patent: June 25, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Kyung Ryul Lee, Jong Suk Jeong, Chang Hak Choi
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Publication number: 20240186070Abstract: A multilayer electronic component has a body and a non-conductive resin layer. The non-conductive resin layer includes a body cover portion disposed in a region of an external surface of the body in which an electrode layer of an external electrode is not disposed, and an extending portion extending from the body cover portion between the electrode layer and a conductive resin layer of the external electrode, to thereby suppress arc discharge, improve bending strength, and improve moisture resistance.Type: ApplicationFiled: February 13, 2024Publication date: June 6, 2024Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Seok YI, Jung Min KIM, Bon Seok KOO, Chang Hak CHOI, Il Ro LEE, Byung Woo KANG, San KYEONG, Hae Sol KANG
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Publication number: 20240128022Abstract: A ceramic electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains. The grain boundary includes a secondary phase including Sn, a rare-earth element, and a first subcomponent. The rare-earth element includes at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La, Gd and Yb. The first subcomponent includes at least one of Si, Mg, and Al.Type: ApplicationFiled: December 6, 2023Publication date: April 18, 2024Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jin Woo Kim, Chang Hak Choi, Seok Hyun Yoon, Ki Yong Lee, Jong Myeong Jeon
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Patent number: 11935703Abstract: A multilayer electronic component has a body and a non-conductive resin layer. The non-conductive resin layer includes a body cover portion disposed in a region of an external surface of the body in which an electrode layer of an external electrode is not disposed, and an extending portion extending from the body cover portion between the electrode layer and a conductive resin layer of the external electrode, to thereby suppress arc discharge, improve bending strength, and improve moisture resistance.Type: GrantFiled: January 9, 2023Date of Patent: March 19, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jae Seok Yi, Jung Min Kim, Bon Seok Koo, Chang Hak Choi, Il Ro Lee, Byung Woo Kang, San Kyeong, Hae Sol Kang
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Publication number: 20240071690Abstract: A multilayer electronic component includes a body including a plurality of dielectric layers and internal electrodes, and an external electrode disposed on the body and connected to the internal electrodes. The body includes an active portion including the plurality of internal electrodes to form capacitance, and cover portions disposed on the active portion, and the cover portions include an outer cover portion including a carbon compound and an inner cover portion disposed between the active portion and the outer cover portion. An average carbon content (Cc2) of the outer cover portion compared to an average carbon content (Cc1) of the inner cover portion satisfies 100?Cc2/Cc1?10,000.Type: ApplicationFiled: August 14, 2023Publication date: February 29, 2024Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Sang Yeop KIM, Jin Il KANG, Ji Hun LEE, Chang Hak CHOI
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Patent number: 11894196Abstract: A multilayer ceramic capacitor includes a body including a dielectric layer and first and second internal electrodes stacked in a first direction and having first and second surfaces opposing each other in the first direction, third and fourth surfaces opposing each other in a second direction, and fifth and sixth surfaces opposing each other in a third direction, and first and second external electrodes disposed on the third and fourth surfaces of the body, respectively, and connected to the first and second internal electrodes, respectively. The first and second external electrodes each include a central portion disposed in a center of each of the third and fourth surfaces and an outer portion disposed outside the central portion. T1>T2>T3, in which T1 and T3 are maximum value and minimum value of a thickness of the central portion, respectively, and T2 is a maximum value of a thickness of the outer portion.Type: GrantFiled: June 6, 2022Date of Patent: February 6, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: San Kyeong, Young Soo Yi, Kun Ho Koo, Soung Jin Kim, Ho Yeol Lee, Kyung Ryul Lee, Chang Hak Choi
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Patent number: 11887786Abstract: A ceramic electronic component includes a body including a dielectric layer and an internal electrode; and an external electrode disposed on the body and connected to the internal electrode. The dielectric layer includes a plurality of grains and grain boundaries disposed between adjacent grains. The grain boundary includes a secondary phase including Sn, a rare-earth element, and a first subcomponent. The rare-earth element includes at least one of Y, Dy, Ho, Er, Gd, Ce, Nd, Sm, Tb, Tm, La, Gd and Yb. The first subcomponent includes at least one of Si, Mg, and Al.Type: GrantFiled: May 10, 2022Date of Patent: January 30, 2024Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Jin Woo Kim, Chang Hak Choi, Seok Hyun Yoon, Ki Yong Lee, Jong Myeong Jeon
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Patent number: 11848415Abstract: An all-solid-state battery includes a body including a solid electrolyte layer, and an anode layer and a cathode layer alternately stacked with the solid electrolyte layer interposed therebetween. A first external electrode is disposed on one side of the body and includes a first electrode layer and a first conductive resin layer disposed on the first electrode layer, and a second external electrode is disposed on another side of the body and includes a second electrode layer and a second conductive resin layer disposed on the second electrode layer. A protective layer is disposed on an entirety of an external surface of the body free of the first and second electrode layers and on the first and second electrode layers, and at least one opening is included in a region of the protective layer disposed on at least one of the first electrode layer and the second electrode layer.Type: GrantFiled: August 12, 2022Date of Patent: December 19, 2023Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: Chang Ryul Jung, Kyung Lock Kim, Jong Sik Yoon, Chang Hak Choi, Byeong Cheol Moon
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Publication number: 20230402229Abstract: A multilayer capacitor includes a capacitor body including a dielectric layer and a plurality of internal electrodes, and external electrodes disposed on both ends of the capacitor body and connected to exposed portions of the plurality of internal electrodes, respectively. Each of the external electrodes includes a conductive layer disposed on the capacitor body to be connected to one or more of the plurality of internal electrodes, a conductive resin layer covering the conductive layer, and including a plurality of metal particles, a plurality of elastic fine powder particles each having an elastic powder particle and a metal film plated on a surface of the elastic powder particle, and a conductive resin surrounding the plurality of metal particles and the plurality of elastic fine powder particles and contacting the conductive layer, and a plating layer covering the conductive resin layer.Type: ApplicationFiled: August 30, 2023Publication date: December 14, 2023Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.Inventors: San Kyeong, Chang Hak Choi, Jae Seok Yi, Bon Seok Koo, Jung Min Kim, Hae Sol Kang, Jun Hyeon Kim