Patents by Inventor Hee-Sun Chun

Hee-Sun Chun 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: 20220208455
    Abstract: A multilayer capacitor includes a body including a plurality of dielectric layers and a plurality of internal electrodes laminated in a first direction, and external electrodes. The body includes an active portion, in which the plurality of internal electrodes are disposed to form capacitance, corresponding to a region between internal electrodes disposed on an outermost side in the first direction, among the plurality of internal electrodes, a cover portion covering the active portion in the first direction, and a side margin portion covering the active portion in a second direction, perpendicular to the first direction, and 1.49<A1/A2<2.50 where A1 is an average grain size of the dielectric layer in a central region of the active portion, and A2 is an average grain size of the dielectric layer in an active-cover boundary portion, adjacent to the cover portion, of the active portion.
    Type: Application
    Filed: June 4, 2021
    Publication date: June 30, 2022
    Inventors: Hong Gi NAM, Seung In BAIK, Ji Su HONG, Eun Ha JANG, Hee Sun CHUN, Jae Sung PARK
  • Publication number: 20220204407
    Abstract: A dielectric material includes a main component represented by (Ba1-xCax)(Ti1-y(Zr, Sn, Hf)y)O3 (0?x?1 and 0?y?0.5); a first subcomponent including at least one of elements among Y, Dy, Ho, Er, Gd, Ce, Nd, Nb, Sm, Tb, Eu, Tm, La, Lu, and Yb; a second subcomponent including Si and/or Al; and a third subcomponent including Ba and/or Ca.
    Type: Application
    Filed: November 10, 2021
    Publication date: June 30, 2022
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Sung PARK, Hee Sun CHUN, In Tae SEO, Hyung Joon JEON, Chung Eun LEE, Jong Han KIM
  • Publication number: 20220181080
    Abstract: A dielectric composition includes: a BaTiO3-based main component and a first accessory component, wherein the first accessory component includes dysprosium (Dy) and terbium (Tb), the sum (Dy+Tb) of contents of dysprosium (Dy) and terbium (Tb) is more than 1.5 mol and 2.0 mol or less based on 100 mol of Ti of the main component, and 0.1?Tb/Dy<0.15 in which Tb/Dy is a ratio of the content of terbium (Tb) to the content of dysprosium (Dy).
    Type: Application
    Filed: August 2, 2021
    Publication date: June 9, 2022
    Inventors: Hee Sun CHUN, Hong Gi NAM, Je Hee LEE, Ji Su HONG, Seung In BAIK, Jae Sung PARK
  • Patent number: 11315729
    Abstract: A multilayer ceramic capacitor includes a ceramic body including first and second surfaces opposing each other, and third and fourth surfaces connecting the first and second surfaces, a plurality of internal electrodes disposed inside the ceramic body, exposed from the first and second surfaces, and having an end exposed from the third surface or the fourth surface, and a first side margin and a second side margin respectively disposed on the first and second surfaces, from which end portions of the plurality of internal electrodes are exposed. The first and second side margins include a base material powder of a barium titanate-based base powder and a subcomponent. The subcomponent includes terbium (Tb) as a first subcomponent including a lanthanide rare earth element, and a content ratio of the terbium (Tb) to a content of the first subcomponent (RE) excluding the terbium (Tb) satisfies 0.110?Tb/RE?2.333.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: April 26, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Sung Park, Jeong Ryeol Kim, In Tae Seo, Jong Han Kim, Hyung Soon Kwon, Hee Sun Chun
  • Patent number: 11295894
    Abstract: A dielectric ceramic composition and a multilayer ceramic capacitor comprising the same are provided. The dielectric ceramic composition includes a BaTiO3-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and neodymium (Nd) as first accessory ingredients. A total content of Nd is less than 0.699 mol % based on 100 mol % of titanium (Ti) of the base material main ingredient.
    Type: Grant
    Filed: February 3, 2020
    Date of Patent: April 5, 2022
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Hee Sun Chun, Sea Han Na Doo, Ji Hong Jo, Kyung Sik Kim
  • Publication number: 20210142945
    Abstract: A multilayer ceramic capacitor includes a ceramic body including first and second surfaces opposing each other, and third and fourth surfaces connecting the first and second surfaces, a plurality of internal electrodes disposed inside the ceramic body, exposed from the first and second surfaces, and having an end exposed from the third surface or the fourth surface, and a first side margin and a second side margin respectively disposed on the first and second surfaces, from which end portions of the plurality of internal electrodes are exposed. The first and second side margins include a base material powder of a barium titanate-based base powder and a subcomponent. The subcomponent includes terbium (Tb) as a first subcomponent including a lanthanide rare earth element, and a content ratio of the terbium (Tb) to a content of the first subcomponent (RE) excluding the terbium (Tb) satisfies 0.110?Tb/RE?2.333.
    Type: Application
    Filed: May 29, 2020
    Publication date: May 13, 2021
    Inventors: Jae Sung PARK, Jeong Ryeol KIM, In Tae SEO, Jong Han KIM, Hyung Soon KWON, Hee Sun CHUN
  • Publication number: 20200395173
    Abstract: A dielectric ceramic composition and a multilayer ceramic capacitor comprising the same are provided. The dielectric ceramic composition includes a BaTiO3-based base material main ingredient and an accessory ingredient, where the accessory ingredient includes dysprosium (Dy) and neodymium (Nd) as first accessory ingredients. A total content of Nd is less than 0.99 mol % based on 100 mol % of titanium (Ti) of the base material main ingredient.
    Type: Application
    Filed: February 3, 2020
    Publication date: December 17, 2020
    Inventors: Hee Sun CHUN, Sea Han Na DOO, Ji Hong JO, Kyung Sik KIM
  • Patent number: 9318234
    Abstract: Disclosed herein are an insulating film and a producing method of the insulating film which can address problems caused by dents by providing a reinforcing layer having the weight ratio of the silica of 60 to 80 wt % on one surface of the insulating film.
    Type: Grant
    Filed: August 29, 2013
    Date of Patent: April 19, 2016
    Assignee: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chung Hee Lee, Jae Choon Cho, Jong Yoon Jang, Hee Sun Chun, Jong Su Park, Sung Hyun Kim
  • Patent number: 9202624
    Abstract: There are provided a conductive paste composition for an external electrode and a multilayer ceramic electronic component fabricated using the same, the conductive paste composition for an external electrode including: a conductive metal powder; and a resin mixture including at least one resin selected from a group consisting of an epoxy-based resin and a phenoxy-based resin, and a polyvinyl formal resin.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: December 1, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Choon Cho, Hee Sun Chun, Choon Keun Lee
  • Publication number: 20150056472
    Abstract: Disclosed herein are a laminate for a printed circuit board, a printed circuit board using the same, and a method of manufacturing the same. The laminate for a printed circuit board includes: a first insulating film; and a second insulating film formed on the first insulating film, wherein a content of a reaction accelerator in the first insulating film is different from that of the second insulating film.
    Type: Application
    Filed: August 21, 2014
    Publication date: February 26, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chung Hee LEE, Jae Choon Cho, Hee Sun Chun, Yong Yoon Jang, Dong Hoon Kim, Choon Keun Lee
  • Patent number: 8840967
    Abstract: The present invention relates to a method for manufacturing a printed circuit board including a flame retardant insulation layer. The printed circuit board of the present invention exhibits excellent thermal stability and excellent mechanical strength, is suitable for imprinting lithography process, provides improved reliability by reducing coefficient of thermal expansion, and has excellent adhesion between circuit patterns and an insulation layer.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: September 23, 2014
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae-Choon Cho, Myeong-Ho Hong, Hwa-Young Lee, Hee-Sun Chun, Choon-Keun Lee
  • Publication number: 20140065413
    Abstract: Disclosed herein are an insulating film and a producing method of the insulating film which can address problems caused by dents by providing a reinforcing layer having the weight ratio of the silica of 60 to 80 wt % on one surface of the insulating film.
    Type: Application
    Filed: August 29, 2013
    Publication date: March 6, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Chung Hee LEE, Jae Choon CHO, Jong Yoon JANG, Hee Sun CHUN, Jong Su PARK, Sung Hyun KIM
  • Publication number: 20140041445
    Abstract: There are provided an apparatus for measuring a drying rate and a method for measuring a drying rate using the same in order to measure the drying rate of a substrate material for manufacturing an electronic apparatus, the apparatus for measuring a drying rate, including a support part having a substrate seated thereon, and a marking part disposed above the substrate while being vertically and horizontally movable, and forming a marking on the substrate while being in contact with the substrate.
    Type: Application
    Filed: July 9, 2013
    Publication date: February 13, 2014
    Inventors: Hee Sun Chun, Jae Choon Cho, Jong Yoon Jang, Dong Joo Shin, Sung Hyun Kim, Choon Keun Lee
  • Publication number: 20140037889
    Abstract: Disclosed are an insulator for a build-up PCB and a method of manufacturing a printed circuit board using the insulator. The insulator for a build-up PCB in accordance with an embodiment of the present invention includes: an insulation film layer, of which one surface has an area corresponding to a circuit board to be built-up; and a cover film layer, which is stacked on the insulation film layer and of which one surface has a larger area than the one surface of the insulation film layer so as to cover an entire outer perimeter of the insulation film layer.
    Type: Application
    Filed: August 6, 2013
    Publication date: February 6, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jong-Yoon JANG, Jae-Choon CHO, Dong-Joo SHIN, Hee-Sun CHUN, Sung-Hyun KIM, Choon-Keun LEE
  • Publication number: 20140014402
    Abstract: This invention relates to an epoxy resin composition, an insulating film formed therefrom, and a printed circuit board, and more particularly to an epoxy resin composition including an epoxy resin, an acid anhydride curing agent, etc., which exhibits improved dielectric properties by decreasing permittivity, dielectric tangent, etc. in a build-up type multilayer printed circuit board, and to an insulating film manufactured using the epoxy resin composition, and to a multilayer printed circuit board in which inner circuits formed of copper (Cu) are insulated by virtue of the insulating film to thus form multiple layers.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 16, 2014
    Inventors: Jae Choon Cho, Jong Yoon Jang, Chung Hee Lee, Hee Sun Chun, Sung Hyun Kim, Choon Keun Lee
  • Publication number: 20140017487
    Abstract: Disclosed herein is an insulation film having a metal layer, including: a carrier; a metal layer formed on the carrier; and an insulation layer formed on the metal layer.
    Type: Application
    Filed: July 9, 2013
    Publication date: January 16, 2014
    Inventors: Hee Sun Chun, Jae Choon Cho, Choon Keun Lee
  • Publication number: 20130329336
    Abstract: There are provided a conductive paste composition for an external electrode and a multilayer ceramic electronic component fabricated using the same, the conductive paste composition for an external electrode including: a conductive metal powder; and a resin mixture including at least one resin selected from a group consisting of an epoxy-based resin and a phenoxy-based resin, and a polyvinyl formal resin.
    Type: Application
    Filed: June 7, 2013
    Publication date: December 12, 2013
    Inventors: Jae Choon CHO, Hee Sun CHUN, Choon Keun LEE
  • Publication number: 20120064231
    Abstract: The present invention relates to a method for manufacturing a printed circuit board including a flame retardant insulation layer. The printed circuit board of the present invention exhibits excellent thermal stability and excellent mechanical strength, is suitable for imprinting lithography process, provides improved reliability by reducing coefficient of thermal expansion, and has excellent adhesion between circuit patterns and an insulation layer.
    Type: Application
    Filed: September 16, 2011
    Publication date: March 15, 2012
    Inventors: Jae-Choon Cho, Myeong-Ho Hong, Hwa-Young Lee, Hee-Sun Chun, Choon-Keun Lee