Patents by Inventor Ji Sung Cho

Ji Sung Cho 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: 20210376023
    Abstract: A manufacturing method of a display device includes: forming a transistor on a substrate; forming an organic insulating layer on the transistor; and performing a plasma treatment on the organic insulating layer. The organic insulating layer includes an acryl-based polymer, and the plasma treatment is performed by using helium gas or argon gas.
    Type: Application
    Filed: March 25, 2021
    Publication date: December 2, 2021
    Inventors: Hyun Min CHO, Tae Sung KIM, Yun Jong YEO, Ji Youn NAM, Hee Min YOO
  • Publication number: 20150156887
    Abstract: Disclosed herein are a method of forming an amorphous alloy film and a printed wiring board manufactured by the same. The amorphous alloy film may be formed on a copper foil as one of rust-proofing treatment methods of the copper foil to thereby simultaneously show and improve corrosion-resistance and conductivity, and the amorphous alloy film may be formed by the sputtering deposition method, such that high melting point materials may be manufactured as a thin film at a relatively low temperature and the amorphous alloy film having strong adhesion strength with a substrate may be obtained.
    Type: Application
    Filed: March 13, 2014
    Publication date: June 4, 2015
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ji Sung Cho, Toshiko Yokota, Makoto Dobashi, Jin Gu Kim, Ichiro Ogura, Je Hong Kyoung
  • Patent number: 9011709
    Abstract: The present invention relates to an electrolyte of an energy storage device. An electrolyte composition in accordance with an embodiment of the present invention includes an electrolyte salt, a carbonate solvent, and at least one nitrile solvent of acetonitrile and propionitrile.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: April 21, 2015
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Jae Hoon Choi, Ji Sung Cho, Eun Sil Kim, Se Woong Paeng, Bae Kyun Kim
  • Publication number: 20150101848
    Abstract: Disclosed herein are a surface-treated copper foil, a copper-clad laminate plate including the same, a printed circuit board using the same, and a method for manufacturing the same. In detail, the copper-clad laminate plate according to one implementation embodiment of the present invention includes: carrier; a peel layer formed on the carrier; a copper-clad layer formed on the peel layer; and a surface-treated layer formed on the copper-clad layer, in which the surface-treated layer includes a thiol-based compound. Therefore, the present invention provides a printed circuit board capable of improving an adhesive force between a base and a copper-clad layer without treating a roughed surface by forming the surface-treated layer on the copper-clad layer.
    Type: Application
    Filed: September 19, 2014
    Publication date: April 16, 2015
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Ji Sung CHO, Toshiko Yokota, Makoto Dobashi, Seung Min Baek, Ichiro Ogura, Eun Jung Lim, Yoon Su Kim, Sung Han
  • Publication number: 20140168853
    Abstract: Disclosed herein is a super capacitor including: an electrode assembly; a pouch cell enclosing an outer peripheral surface of the electrode assembly; a resin case molding the pouch cell; and a lead wire of which one side is electrically connected to the electrode assembly and the other side exposed to the outside of the resin case is bonded to an outer peripheral surface of the resin case. According to the present invention, the super capacitor may have durability against external impact, and cycle life characteristics of the super capacitor may be significantly improved.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 19, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Hoon Choi, Yeong Su Cho, Eun Sil Kim, Se Woong Paeng, Bae Kyun Kim, Ji Sung Cho
  • Publication number: 20140160631
    Abstract: The present invention relates to an electrolyte of an energy storage device. An electrolyte composition in accordance with an embodiment of the present invention includes an electrolyte salt, a carbonate solvent, and at least one nitrile solvent of acetonitrile and propionitrile.
    Type: Application
    Filed: March 15, 2013
    Publication date: June 12, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Jae Hoon Hoon CHOI, Ji Sung CHO, Eun Sil KIM, Se Woong PAENG, Bae Kyun KIM
  • Patent number: 8520367
    Abstract: Provided are a method of manufacturing a lithium ion capacitor and a lithium ion capacitor manufactured using the same. The method of manufacturing a lithium ion capacitor includes forming a lithium thin film on one surface of a separator; making the lithium thin film in contact with an anode, and alternately disposing the anode and a cathode with the separator interposed therebetween to form an electrode cell; and enclosing the electrode cell and an electrolyte into a housing, and pre-doping lithium ions to the anode from the lithium thin film.
    Type: Grant
    Filed: February 1, 2011
    Date of Patent: August 27, 2013
    Assignee: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Kyun Lee, Ji Sung Cho, Bae Kyun Kim, Hong Seok Min, Dong Hyeok Choi
  • Publication number: 20130070390
    Abstract: An electrode active material having a partially crystalline structure in a fine area (short range), a method for preparing the same, and an electrochemical capacitor including the same. The electrode active material having a partially crystalline structure in a fine area (short range) can be prepared by performing heat treatment at a proper temperature. In a case where the electrode active material is used for an electrode of an electrochemical capacitor, the pores as well as the partially crystalline structure, of the electrode active material, can contribute to capacitance, and thus, energy density of the electrochemical capacitor can be significantly improved.
    Type: Application
    Filed: September 6, 2012
    Publication date: March 21, 2013
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Kyun Lee, Ji Sung Cho, Bae Kyun Kim
  • Publication number: 20130062571
    Abstract: A method for preparing electrode active material slurry including: mixing a conductive agent and a first thickener with a low molecular weight to primarily disperse the mixture; and mixing an active material and a second thickener with a higher molecular weight than the first thickener in the primary dispersion to secondarily disperse the mixture, and an electrochemical capacitor comprising an electrode using electrode active material slurry prepared by the method. It is possible to prepare a low resistance and high capacity electrochemical capacitor by selectively using at least two thickeners with different degrees of polymerization and molecular weights to remarkably improve dispersibility of an active material and a conductive agent. Particularly, it is possible to reduce resistance based on an electrochemical capacitor with the same capacity.
    Type: Application
    Filed: August 9, 2012
    Publication date: March 14, 2013
    Applicant: Samsung Electro-Mechanics
    Inventors: Sang Kyun LEE, Seung Min KIM, Ji Sung CHO, Bae Kyun KIM, Sergey Remizov
  • Publication number: 20120300365
    Abstract: A cathode active material, a method for preparing the same, and a lithium ion capacitor including the same. The cathode active material has a surface with a porous structure and an inside with an amorphous structure where crystalline phases are not present. The cathode active material according to the present invention has the inside having an amorphous structure where crystal lattices are not contained in a short range order, thereby preventing the lithium ions from being intercalated into the inside of the cathode active material while the anode is pre-doped. The lithium ion capacitor containing the cathode active material having the above structure can maintain a potential difference between the cathode and the anode constantly, thereby obtaining high withstand voltage, high energy density, and high input and output characteristics. Furthermore, a large-capacitance lithium ion capacitor device having excellent reliability of high-speed charging and discharging cycle can be manufactured.
    Type: Application
    Filed: May 3, 2012
    Publication date: November 29, 2012
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Kyun Lee, Bae Kyun Kim, Ji Sung Cho
  • Publication number: 20120300366
    Abstract: Disclosed herein are a method for pre-doping an anode and a lithium ion capacitor storage device including the same. The method of the present invention includes: disposing lithium metal films and anodes alternately; and charging the lithium metal films and the anodes to directly pre-dope lithium metal contained in the lithium metal films onto the anodes. The lithium ion capacitor storage device is manufactured by the method. According to the present invention, the lithium ion capacitor storage device including the anode can provide a high-capacitance capacitor capable of operating even at a high voltage range of up to 3.8V to 2.0V, and ensure high reliability even in a high-temperature (60° C.) cycle.
    Type: Application
    Filed: May 3, 2012
    Publication date: November 29, 2012
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Ji Sung Cho, Sang Kyun Lee, Hyun Chul Jung, Bae Kyun Kim
  • Publication number: 20120293916
    Abstract: Disclosed herein are an electrolyte solution composition and an energy storage device including the same. The electrolyte solution may include: a solvent including one or more compound selected from one or more cyclic carbonate compound; and additives including one or more selected from a group consisting of catechol carbonate (CC), fluoro ethylene carbonate (FEC), propane sulton (PS), and propene sulton (PST).
    Type: Application
    Filed: April 26, 2012
    Publication date: November 22, 2012
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventors: Sang Kyun LEE, Hong Seok Min, Bae Kyun Kim, Ji Sung Cho
  • Publication number: 20120270116
    Abstract: Disclosed is a metal air battery a metal anode and an air cathode, wherein the metal anode includes an organic electrolyte and the air cathode includes an aqueous electrolyte, and a method for preparing the same. The metal air battery having a structure according to the exemplary embodiment of the present invention may prevent the electrolytes of the cathode and the anode from being mixed and activate battery reaction, thereby preparing a high-capacity battery.
    Type: Application
    Filed: January 24, 2012
    Publication date: October 25, 2012
    Inventors: Ji Sung CHO, Sang Kyun Lee, Hyun Chul Jung, Bae Kyun Kim, Chang Ryul Jung
  • Publication number: 20120262845
    Abstract: The present invention relates to a magnesium capacitor including: a cathode including a carbon material as an active material; an anode including magnesium and its alloys as active materials; and an electrolyte. Since the magnesium capacitor in accordance with the present invention can use magnesium metal and its alloys as anode materials, a separate pre-doping process of magnesium metal is not needed. Further, it is possible to provide a magnesium capacitor that can be charged and discharged in a predetermined range as well as overcome reduction in stability due to leakage of an electrolyte occurred when using lithium ions as an anode material in the prior art.
    Type: Application
    Filed: January 24, 2012
    Publication date: October 18, 2012
    Inventors: Sang Kyun LEE, Ji Sung CHO, Bae Kyun KIM
  • Publication number: 20120148921
    Abstract: Disclosed are an electrode for a low-resistance energy storage device, a method of manufacturing the same, and an energy storage device using the same. In detail, the electrode for an energy storage device is manufactured by forming electrode materials on a metal layer having a dendrite formed thereon. The energy storage device using the electrode for an energy storage device has low resistance characteristics.
    Type: Application
    Filed: May 20, 2011
    Publication date: June 14, 2012
    Inventors: Sang Kyun Lee, Bae Kyun Kim, Ji Sung Cho
  • Publication number: 20120099245
    Abstract: Disclosed herein are a lithium ion capacitor (LIC) including: a positive electrode including a positive electrode activated material; a negative electrode including a negative electrode activated material; and an electrolyte solution disposed between the positive electrode and the negative electrode, wherein the positive electrode activated material includes graphite, thereby making it possible to considerably improve capacitance of a lithium ion capacitor as compared to a lithium ion capacitor according to the related art, and a manufacturing method of the lithium ion capacitor.
    Type: Application
    Filed: August 22, 2011
    Publication date: April 26, 2012
    Inventors: Ji Sung CHO, Sang Kyun Lee, Bae Kyun Kim
  • Publication number: 20120099246
    Abstract: Disclosed herein is a lithium ion capacitor, including: a positive electrode including a positive electrode activated material; a negative electrode including a negative electrode activated material; and an electrolyte disposed between the positive and negative electrodes, wherein the positive electrode activated material includes a mixture of lithium iron phosphate (LiFePO4) and activated carbon, thereby having improved energy density and capacitance and a long life span.
    Type: Application
    Filed: August 29, 2011
    Publication date: April 26, 2012
    Inventors: Ji Sung Cho, Sang Kyun Lee, Bae Kyun Kim
  • Publication number: 20120087063
    Abstract: Provided is an anode structure of an energy storage device such as a lithium ion capacitor. The anode structure includes a current collector and an active material layer formed on the current collector, and the active material layer includes an active material, a conductive material for providing conductivity to the active material layer, and graphite surface-coated with amorphous carbon.
    Type: Application
    Filed: February 2, 2011
    Publication date: April 12, 2012
    Inventors: Ji Sung Cho, Sang Kyun Lee, Bae Kyun Kim
  • Publication number: 20120063061
    Abstract: Disclosed herein are an electrolyte solution composition and an energy storage device including the same. The electrolyte solution composition contains: a lithium salt including lithium ions; and a solvent made of a material selected from a group consisting of at least one cyclic carbonate compound and propionate compound. The electrolyte solution composition may balancedly maintain characteristics at a room temperature and a low temperature and be used for pre-doping lithium ions, thereby making it possible to improve pre-doping efficiency.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 15, 2012
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Kyun Lee, Bae Kyun Kim, Ji Sung Cho
  • Publication number: 20120063062
    Abstract: Disclosed herein are an electrolyte solution composition and an energy storage device including the same. The electrolyte solution composition contains: a lithium salt including lithium ions; and a solvent made of a material selected from a group consisting of at least one cyclic carbonate compound. The electrolyte solution composition may balancedly maintain characteristics at a room temperature and a high temperature and be used for pre-doping lithium ions, thereby making it possible to improve pre-doping efficiency.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 15, 2012
    Applicant: Samsung Electro-Mechanics Co., Ltd.
    Inventors: Sang Kyun Lee, Bae Kyun Kim, Ji Sung Cho