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).

  • Publication number: 20230187137
    Abstract: 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: Application
    Filed: June 6, 2022
    Publication date: June 15, 2023
    Applicant: 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
  • Publication number: 20230160047
    Abstract: 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: Application
    Filed: January 9, 2023
    Publication date: May 25, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sang Kyun KWON, Han Wool RYU, Chul Min SIM, Chang Hak CHOI, Jong Suk JEONG
  • Patent number: 11636984
    Abstract: 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: Grant
    Filed: April 29, 2022
    Date of Patent: April 25, 2023
    Assignee: 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
  • Patent number: 11637362
    Abstract: An antenna module includes a substrate having a first surface including a ground region and a feeder region; chip antennas mounted on the first surface of the substrate; and at least one patch antenna disposed inside of the substrate or at least partially disposed on a second surface of the substrate. The chip antennas include a body portion, a ground portion bonded to a first surface of the body portion, and a radiation portion bonded to a second surface of a body portion. The ground portion of each chip antenna is mounted on the ground region and the radiation portion of each chip antenna is mounted on the feeder region.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: April 25, 2023
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Yeong Kim, Sung Yong An, Chang Hak Choi
  • Publication number: 20230119994
    Abstract: A multilayer ceramic capacitor (MLCC) includes a body including first dielectric layers and second dielectric layers, the body including first to sixth surfaces, a second surface, a third surface, a fourth surface, a fifth surface and a sixth surface; first internal electrodes disposed on the first dielectric layers, exposed to the third surface, the fifth surface, and the sixth surface, and spaced apart from the fourth surface by first spaces; second internal electrodes disposed on the second dielectric layers to oppose the first internal electrodes with the first dielectric layers or the second dielectric layers interposed therebetween, exposed to the fourth surface, the fifth surface, and the sixth surface, and spaced apart from the third surface by second spaces; first dielectric patterns disposed in at least a portion of the first spaces, and second dielectric patterns disposed in at least a portion of the second spaces; and lateral insulating layers.
    Type: Application
    Filed: December 21, 2022
    Publication date: April 20, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Moon Soo PARK, Jae Hun CHOE, Dong Hun KIM, Byung Chul JANG, Chang Hak CHOI, Byung Kun KIM
  • Publication number: 20230066593
    Abstract: A multilayer electronic component include a first non-conductive resin layer, extending between a conductive resin layer and an electrode layer of a first external electrode, and a second non-conductive resin layer extending between a conductive resin layer and an electrode layer of a second external electrode. The first non-conductive layer and the second non-conductive layer may be spaced apart from each other to suppress arc discharge and to improve bending strength.
    Type: Application
    Filed: October 24, 2022
    Publication date: March 2, 2023
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Seok YI, Il Ro LEE, Chang Hak CHOI, Bon Seok KOO, Jung Min KIM, Byung Woo KANG, San KYEONG
  • Patent number: 11569033
    Abstract: A multilayer ceramic capacitor (MLCC) includes a body including first dielectric layers and second dielectric layers, the body including first to sixth surfaces, a second surface, a third surface, a fourth surface, a fifth surface and a sixth surface; first internal electrodes disposed on the first dielectric layers, exposed to the third surface, the fifth surface, and the sixth surface, and spaced apart from the fourth surface by first spaces; second internal electrodes disposed on the second dielectric layers to oppose the first internal electrodes with the first dielectric layers or the second dielectric layers interposed therebetween, exposed to the fourth surface, the fifth surface, and the sixth surface, and spaced apart from the third surface by second spaces; first dielectric patterns disposed in at least a portion of the first spaces, and second dielectric patterns disposed in at least a portion of the second spaces; and lateral insulating layers.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: January 31, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD
    Inventors: Moon Soo Park, Jae Hun Choe, Dong Hun Kim, Byung Chul Jang, Chang Hak Choi, Byung Kun Kim
  • Patent number: 11562859
    Abstract: A multilayered capacitor includes a shock absorbing layer disposed between an upper layer of a capacitor body and a conductive resin layer of an external electrode and between a lower layer of the capacitor body and the conductive resin layer of the external electrode. A length of the shock absorbing layer is longer than that of the conductive resin layer, thereby improving warpage strength characteristics of the capacitor body.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: January 24, 2023
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Seok Yi, Jung Min Kim, Chang Hak Choi, Bon Seok Koo, Byung Woo Kang, Hae Sol Kang, San Kyeong, Jun Hyeon Kim
  • Patent number: 11538616
    Abstract: A coil electronic component includes a body, in which a coil portion is embedded, including a plurality of magnetic particles, and an external electrode connected to the coil portion. Among the plurality of magnetic particles, at least a portion of magnetic particles include a first layer, disposed on a surface of a magnetic particle among the magnetic particles, and a second layer disposed on a surface of the first layer. The first layer is an inorganic coating layer containing a phosphorus (P) component, and the second layer is an atomic layer deposition layer.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: December 27, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Kyung Lock Kim, Byeong Cheol Moon, Chang Hak Choi, Jeong Gu Yeo, Young Il Lee
  • Publication number: 20220399165
    Abstract: 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: Application
    Filed: May 10, 2022
    Publication date: December 15, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jin Woo Kim, Chang Hak Choi, Seok Hyun Yoon, Ki Yong Lee, Jong Myeong Jeon
  • Publication number: 20220384845
    Abstract: 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: Application
    Filed: August 12, 2022
    Publication date: December 1, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chang Ryul Jung, Kyung Lock Kim, Jong Sik Yoon, Chang Hak Choi, Byeong Cheol Moon
  • Patent number: 11508522
    Abstract: A multilayer electronic component include a first non-conductive resin layer, extending between a conductive resin layer and an electrode layer of a first external electrode, and a second non-conductive resin layer extending between a conductive resin layer and an electrode layer of a second external electrode. The first non-conductive layer and the second non-conductive layer may be spaced apart from each other to suppress arc discharge and to improve bending strength.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: November 22, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Seok Yi, Il Ro Lee, Chang Hak Choi, Bon Seok Koo, Jung Min Kim, Byung Woo Kang, San Kyeong
  • Patent number: 11482372
    Abstract: A coil component includes a body embedding a support substrate, an external electrode disposed on one surface of the body, and a coil portion disposed on the support substrate and including a lead-out pattern having one surface exposed to one end surface of the body abutting the one surface of the body. A connection electrode penetrates the lead-out pattern, extends to the external electrode, and has one surface exposed to the one end surface of the body. An intermetallic compound is disposed between the connection electrode and the lead-out pattern. The connection electrode includes a base resin, a plurality of metal particles disposed in the base resin, and a conductive connection portion surrounding the plurality of metal particles and in contact with the intermetallic compound.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: October 25, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Ju Hwan Yang, Chang Hak Choi, Byeong Cheol Moon, Yong Hui Li, Byung Soo Kang
  • Patent number: 11469444
    Abstract: 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: Grant
    Filed: March 16, 2020
    Date of Patent: October 11, 2022
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Chang Ryul Jung, Kyung Lock Kim, Jong Sik Yoon, Chang Hak Choi, Byeong Cheol Moon
  • Publication number: 20220301770
    Abstract: 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: Application
    Filed: January 14, 2022
    Publication date: September 22, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Kyung Ryul Lee, Jong Suk Jeong, Chang Hak Choi
  • Publication number: 20220301783
    Abstract: 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: Application
    Filed: June 9, 2022
    Publication date: September 22, 2022
    Applicant: 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
  • Publication number: 20220262571
    Abstract: 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: Application
    Filed: April 29, 2022
    Publication date: August 18, 2022
    Applicant: 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
  • Patent number: 11393630
    Abstract: 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: Grant
    Filed: March 30, 2020
    Date of Patent: July 19, 2022
    Assignee: 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
  • Patent number: 11393633
    Abstract: 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: Grant
    Filed: May 15, 2020
    Date of Patent: July 19, 2022
    Assignee: 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
  • Publication number: 20220199327
    Abstract: 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: Application
    Filed: March 11, 2022
    Publication date: June 23, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Seok Hyun YOON, Chan Hee NAM, Song Je JEON, Chang Hak CHOI