Patents by Inventor Dong Ik Chang

Dong Ik Chang 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).

  • Patent number: 8456799
    Abstract: Disclosed are a multilayer ceramic capacitor and a method of manufacturing the same. The multilayer ceramic capacitor includes a ceramic body having a plurality of dielectric layers stacked on top of each other, at least one internal electrode formed on a corresponding one of the plurality of dielectric layers and having uneven portions formed at an edge thereof, the internal electrode having a connectivity of between 0.7 and 0.9, which is defined by an equation below, and an external electrode formed on an outer surface of the ceramic body and connected with the internal electrode, Z=X?Y/X ??(Equation) where X denotes a length of a cross-section of the internal electrode in one direction, Y denotes a total length of gaps formed by holes in the cross-section, and Z denotes the connectivity of the internal electrode. The multilayer ceramic capacitor achieves a low crack generation rate and a high level of reliability.
    Type: Grant
    Filed: February 24, 2011
    Date of Patent: June 4, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Dong Ik Chang, Kang Heon Hur, Doo Young Kim, Ji Hun Jeong
  • Patent number: 8390983
    Abstract: Disclosed is a multilayer ceramic capacitor. The multilayer ceramic capacitor includes a capacitive part including a plurality of dielectric layers and first and second internal electrodes that are laminated in an alternating manner, wherein one set of ends of the first internal electrodes and the other set of ends of the second internal electrodes are exposed in a lamination direction in which the dielectric layers are laminated, a protective layer formed on at least one of top and bottom surfaces of the capacitive part, including a plurality of pores having an average pore size of 0.5 ?m to 3 ?m, and having a porosity of 2% to 10%, and first and second external electrodes electrically connected to the first and second internal electrodes exposed in the lamination direction of the dielectric layers.
    Type: Grant
    Filed: April 23, 2010
    Date of Patent: March 5, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji Hun Jeong, Hyo Jung Kim, Dong Ik Chang, Doo Young Kim
  • Patent number: 8345405
    Abstract: Disclosed is multilayer ceramic capacitor. The multilayer ceramic capacitor includes a capacitive part including dielectric layers and first and second internal electrodes alternately laminated therein, wherein the dielectric layers include first ceramic particles having an average particle size of 0.1 ?m to 0.3 ?m, and one set of ends of the first internal electrodes and one set of ends of the second internal electrodes are exposed in a lamination direction of the dielectric layers, a protective layer formed on at least one of top and bottom surfaces of the capacitive part, including second ceramic particles and having a porosity of 2% to 4%, wherein an average particle size ratio of the second ceramic particles to the first ceramic particles ranges from 1.1 to 1.3; and first and second external electrodes electrically connected to the first and second internal electrodes exposed in the lamination direction of the dielectric layers.
    Type: Grant
    Filed: April 28, 2010
    Date of Patent: January 1, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ji Hun Jeong, Hyo Jung Kim, Hyo Jung Kim, Dong Ik Chang, Doo Young Kim
  • Patent number: 8264815
    Abstract: A multilayer ceramic capacitor includes: a ceramic element; a plurality of first and second inner electrodes formed at the interior of the ceramic element and including capacity contribution portions facing each other and capacity non-contribution portions extending from the capacity contribution portions and having one end alternately exposed from the side of the ceramic element; first and second outer electrodes formed at the side of the ceramic main body and electrically connected with the first and second inner electrodes, wherein the thickness of the capacity non-contribution portion is greater than that of the capacity contribution portion and connectivity of the capacity non-contribution portion is higher than that of the capacity contribution portion at one or more of the first and second inner electrodes.
    Type: Grant
    Filed: July 28, 2010
    Date of Patent: September 11, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyea Sun Yun, Gee Lyong Kim, Doo Young Kim, Gi Woo Lee, Dong Ik Chang
  • Patent number: 8259434
    Abstract: There is provided a multilayer ceramic capacitor including: a capacitor main body formed by stacking a dielectric layer having a thickness of td and alternately stacking more than one opposing pair of a first internal electrode having a thickness of te and a second internal electrode having the same thickness as the first internal electrode, and having the dielectric layer therebetween; and a protective layer formed by stacking a second dielectric layer on at least one of an upper surface and a lower surface of the capacitor main body so that a dielectric material layer has a thickness of tc, wherein when a thickness from an end of a region where the first internal electrode and the second internal electrode oppose each other to side and end surfaces of the capacitor main body is a, it satisfies the following Equation 1 and a method of fabricating a multilayer ceramic capacitor are provided.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: September 4, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyo Jung Kim, Ji Hun Jeong, Dong Ik Chang, Doo Young Kim
  • Patent number: 8233264
    Abstract: There is provided a multilayer ceramic capacitor. The multilayer ceramic capacitor includes inner electrodes and dielectric layers stacked alternately with each other. When a continuity level of each of the inner electrodes is defined as B/A where A denotes a total length of the inner electrode and B denotes a length of the inner electrode excluding pores of the inner electrode, and a section of the inner electrode, having a predetermined length from each end of the inner electrode, is defined as an outer section, a section of the inner electrode excluding the outer section is defined as an inner section, and a section of the dielectric layers from each end of the inner electrode to a corresponding surface of the multilayer ceramic capacitor is defined as an edge section, a length of the outer section is 0.1 to 0.3 times that of the edge section, and the outer section of the inner electrode has a lower continuity level than that of the inner section of the inner electrode.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: July 31, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Soon Sam Cho, Dong Ik Chang, Doo Young Kim
  • Patent number: 8194390
    Abstract: A multilayer ceramic capacitor includes a capacitor body in which inner electrodes and dielectric layers are alternately laminated, and a length difference rate (D) of the inner electrodes is 7% or less. The length difference rate (D) is defined by D={L?1}/L×100, where L is a maximum length of the inner electrode, and l is a minimum length of the inner electrode.
    Type: Grant
    Filed: July 26, 2010
    Date of Patent: June 5, 2012
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Hyo Jung Kim, Dong Ik Chang, Doo Young Kim, Ji Hun Jeong
  • Publication number: 20120127626
    Abstract: Disclosed are a multilayer ceramic capacitor and a method of manufacturing the same. The multilayer ceramic capacitor includes a ceramic body having a plurality of dielectric layers stacked on top of each other, at least one internal electrode formed on a corresponding one of the plurality of dielectric layers and having uneven portions formed at an edge thereof, the internal electrode having a connectivity of between 0.7 and 0.9, which is defined by an equation below, and an external electrode formed on an outer surface of the ceramic body and connected with the internal electrode, Z=X?Y/X ??(Equation) where X denotes a length of a cross-section of the internal electrode in one direction, Y denotes a total length of gaps formed by holes in the cross-section, and Z denotes the connectivity of the internal electrode. The multilayer ceramic capacitor achieves a low crack generation rate and a high level of reliability.
    Type: Application
    Filed: February 24, 2011
    Publication date: May 24, 2012
    Inventors: Dong Ik CHANG, Kang Heon Hur, Doo Young Kim, Ji Hun Jeong
  • Publication number: 20120106025
    Abstract: There is provided a multilayer ceramic capacitor and a method of manufacturing the same. There is provided a multilayer ceramic capacitor, including: a ceramic body having a plurality of dielectric layers stacked therein and including a first side and a second side opposite to each other and a third side and a fourth side connected to the first side and the second side; and inner electrode layers formed on the dielectric layers, including electrode drawing parts exposed to the first side or the second side and an electrode main part, and having a length between the electrode main part and the third side of 100 ?m or less and a ratio of a length between the electrode drawing part and the third side to the length between the electrode main part and the third side of between 1.2:1 and 1.7:1. The multilayer ceramic capacitor may have improved reliability by suppressing cracks occurring in the ceramic laminate due to thermal impact during a sintering or mounting process.
    Type: Application
    Filed: May 26, 2011
    Publication date: May 3, 2012
    Inventors: Ji Hun JEONG, Doo Young Kim, Dong Ik Chang, Kang Heon Hur, Sung Ae Kim
  • Publication number: 20120099241
    Abstract: Disclosed are a multilayer ceramic electronic component and a method of manufacturing the same. There is provided a multilayer ceramic electronic component, including: a ceramic main body in which a plurality of dielectric layers having an average thickness of 1 ?m or less are stacked; and inner electrode layers formed on the dielectric layers and having connectivity of 90% or more expressed by the following Equation, wherein the ratio of the thickness of the inner electrode layer to the thickness of the dielectric layer is between 0.8:1 and 1.3:1. The Equation is as follows.
    Type: Application
    Filed: May 31, 2011
    Publication date: April 26, 2012
    Inventors: Dong Ik Chang, Kang Heon Hur, Doo Young Kim, Ji Hun Jeong
  • Publication number: 20110157766
    Abstract: There is provided a multilayer ceramic capacitor. The multilayer ceramic capacitor includes inner electrodes and dielectric layers stacked alternately with each other. When a continuity level of each of the inner electrodes is defined as B/A where A denotes a total length of the inner electrode and B denotes a length of the inner electrode excluding pores of the inner electrode, and a section of the inner electrode, having a predetermined length from each end of the inner electrode, is defined as an outer section, a section of the inner electrode excluding the outer section is defined as an inner section, and a section of the dielectric layers from each end of the inner electrode to a corresponding surface of the multilayer ceramic capacitor is defined as an edge section, a length of the outer section is 0.1 to 0.3 times that of the edge section, and the outer section of the inner electrode has a lower continuity level than that of the inner section of the inner electrode.
    Type: Application
    Filed: July 30, 2010
    Publication date: June 30, 2011
    Inventors: Soon Sam CHO, Dong Ik Chang, Doo Young Kim
  • Publication number: 20110157765
    Abstract: A multilayer ceramic capacitor includes a capacitor body in which inner electrodes and dielectric layers are alternately laminated, and a length difference rate (D) of the inner electrodes is 7% or less. The length difference rate (D) is defined by D={L?1}/L×100, where L is a maximum length of the inner electrode, and l is a minimum length of the inner electrode.
    Type: Application
    Filed: July 26, 2010
    Publication date: June 30, 2011
    Inventors: Hyo Jung Kim, Dong Ik Chang, Doo Young Kim, Ji Hun Jeong
  • Publication number: 20110149469
    Abstract: There is provided a multilayer ceramic capacitor including: a capacitor main body formed by stacking a dielectric layer having a thickness of td and alternately stacking more than one opposing pair of a first internal electrode having a thickness of to and a second internal electrode having the same thickness as the first internal electrode, and having the dielectric layer therebetween; and a protective layer formed by stacking a second dielectric layer on at least one of an upper surface and a lower surface of the capacitor main body so that a dielectric material layer has a thickness of tc, wherein when a thickness from an end of a region where the first internal electrode and the second internal electrode oppose each other to side and end surfaces of the capacitor main body is a, it satisfies the following Equation 1 and a method of fabricating a multilayer ceramic capacitor are provided.
    Type: Application
    Filed: July 26, 2010
    Publication date: June 23, 2011
    Inventors: Hyo Jung Kim, Ji Hun Jeong, Dong Ik Chang, Doo Young Kim
  • Publication number: 20110141659
    Abstract: There is provided a multilayer ceramic capacitor. The multilayer ceramic capacitor includes an effective layer including inner electrodes and dielectric layers that are alternately stacked, and a protection layer formed on each of top and bottom surfaces of the effective layer, the protection layer being formed by stacking dielectric layers. The effective layer has an outside part, an inside part and an outside part in that order along a stack direction, the inner electrodes of the outside parts have a smaller thickness than that of the inner electrodes of the inside part, and the outside parts have a thickness 0.1 to 0.5 times that of the protection layer.
    Type: Application
    Filed: December 13, 2010
    Publication date: June 16, 2011
    Inventors: Dong Ik CHANG, Jin Hyung Lim, Ji Hun Jeong, Doo Young Kim
  • Publication number: 20110141652
    Abstract: A multilayer ceramic capacitor includes: an effective layer formed by alternately laminating inner electrodes and dielectric layers; and a protection layer formed by stacking dielectric layers on upper and lower surfaces of the effective layer, wherein the thickness of the protection layer is 10.0 to 30.0 times the sum of an average thickness of the inner electrodes and an average thickness of the dielectric layers within the effective layer.
    Type: Application
    Filed: April 1, 2010
    Publication date: June 16, 2011
    Inventors: Dong Ik Chang, Hyo Jung Kim, Jong Hoon Bae, Chul Seung Lee, Doo Young Kim
  • Publication number: 20110141655
    Abstract: Disclosed is multilayer ceramic capacitor. The multilayer ceramic capacitor includes a capacitive part including dielectric layers and first and second internal electrodes alternately laminated therein, wherein the dielectric layers include first ceramic particles having an average particle size of 0.1 ?m to 0.3 ?m, and one set of ends of the first internal electrodes and one set of ends of the second internal electrodes are exposed in a lamination direction of the dielectric layers, a protective layer formed on at least one of top and bottom surfaces of the capacitive part, including second ceramic particles and having a porosity of 2% to 4%, wherein an average particle size ratio of the second ceramic particles to the first ceramic particles ranges from 1.1 to 1.3; and first and second external electrodes electrically connected to the first and second internal electrodes exposed in the lamination direction of the dielectric layers.
    Type: Application
    Filed: April 28, 2010
    Publication date: June 16, 2011
    Inventors: Ji Hun Jeong, Hyo Jung Kim, Hyo Jung Kim, Dong Ik Chang, Doo Young Kim
  • Publication number: 20110141656
    Abstract: A multilayer ceramic capacitor includes: a ceramic element; a plurality of first and second inner electrodes formed at the interior of the ceramic element and including capacity contribution portions facing each other and capacity non-contribution portions extending from the capacity contribution portions and having one end alternately exposed from the side of the ceramic element; first and second outer electrodes formed at the side of the ceramic main body and electrically connected with the first and second inner electrodes, wherein the thickness of the capacity non-contribution portion is greater than that of the capacity contribution portion and connectivity of the capacity non-contribution portion is higher than that of the capacity contribution portion at one or more of the first and second inner electrodes.
    Type: Application
    Filed: July 28, 2010
    Publication date: June 16, 2011
    Inventors: Hyea Sun Yun, Gee Lyong Kim, Doo Young Kim, Gi Woo Lee, Dong Ik Chang
  • Publication number: 20110141660
    Abstract: Disclosed is a multilayer ceramic capacitor. The multilayer ceramic capacitor includes a capacitive part including a plurality of dielectric layers and first and second internal electrodes that are laminated in an alternating manner, wherein one set of ends of the first internal electrodes and the other set of ends of the second internal electrodes are exposed in a lamination direction in which the dielectric layers are laminated, a protective layer formed on at least one of top and bottom surfaces of the capacitive part, including a plurality of pores having an average pore size of 0.5 ?m to 3 ?m, and having a porosity of 2% to 10%, and first and second external electrodes electrically connected to the first and second internal electrodes exposed in the lamination direction of the dielectric layers.
    Type: Application
    Filed: April 23, 2010
    Publication date: June 16, 2011
    Inventors: Ji Hun JEONG, Hyo Jung Kim, Dong Ik Chang, Doo Young Kim