Patents by Inventor Ju Ok Park

Ju Ok Park 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: 11967705
    Abstract: An anode active material for a lithium secondary battery includes a carbon-based particle including pores therein, a silicon-containing coating layer formed at an inside the pores of the carbon-based particle or on a surface of the carbon-based particle, and a carbon coating layer formed on the silicon-containing coating layer. A full width at half maximum (FWHM) of an O1s peak of a surface measured by an X-ray photoelectron spectroscopy (XPS) is 2.0 or more. A lithium secondary battery including the anode active material having improved initial discharge capacity and capacity efficiency is provided.
    Type: Grant
    Filed: July 1, 2022
    Date of Patent: April 23, 2024
    Assignee: SK ON CO., LTD.
    Inventors: Gwi Ok Park, Seok Keun Yoo, Dong Il Jang, Ju Ho Chung
  • Publication number: 20240088389
    Abstract: An anode active material for a lithium secondary battery and a lithium secondary battery are provided. The anode active material includes a carbon-based particle including pores formed in at least one of an inside of the particle and a surface of the particle and having a pore size of the carbon-based particle is 20 nm or less, and silicon formed at an inside of the pores of the carbon-based particle or on the surface of the carbon-based particle. Silicon has an amorphous structure or a crystallite size of silicon measured by an XRD analysis is 7 nm or less. Difference between volume expansion ratios of carbon and silicon can be reduced to improve life-span property of the secondary battery.
    Type: Application
    Filed: November 15, 2023
    Publication date: March 14, 2024
    Inventors: Gwi Ok PARK, Seok Keun YOO, Ju Ho CHUNG
  • Patent number: 9224820
    Abstract: An oxide semiconductor sputtering target which is used for depositing a thin film having high electron mobility and high operational reliability, a method of manufacturing thin-film transistors (TFTs) using the same, and a TFT manufactured using the same. The oxide semiconductor sputtering target is used in a sputtering process for depositing an active layer on a TFT. The oxide semiconductor sputtering target is made of a material based on a composition including indium (In), tin (Sn), gallium (Ga) and oxygen (O). The method includes the step of depositing an active layer using the above-described oxide semiconductor sputtering target. The thin-film transistor may be used in a display device, such as a liquid crystal display (LCD) or an organic light-emitting display (OLED).
    Type: Grant
    Filed: May 29, 2013
    Date of Patent: December 29, 2015
    Assignee: Samsung Corning Advanced Glass, LLC
    Inventors: Jinjoo Ha, Seungju Lee, Joo Hye Oh, Johann Cho, Ju Ok Park, In Sung Sohn, Hyungrok Lee, Jin Woo Han
  • Publication number: 20140239295
    Abstract: Provided are a zinc oxide-based sputtering target, a method of preparing the same, and a thin film transistor including a barrier layer deposited by the zinc oxide-based sputtering target. The zinc oxide-based sputtering target includes a sintered body that is composed of zinc oxide in which indium oxide is doped in a range from about 1% w/w to about 50% w/w. A backing plate is coupled to a back of the sintered body. The backing plate supports the sintered body.
    Type: Application
    Filed: February 26, 2014
    Publication date: August 28, 2014
    Applicant: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Woo PARK, Dong-Jo Kim, Ju-Ok Park, In-Sung Sohn, Sang-Won Yoon, Gun-Hyo Lee, Yong-Jin Lee, Yoon-Gyu Lee, Do-Hyun Kim, Woo-Seok Jeon
  • Publication number: 20130320336
    Abstract: An oxide semiconductor sputtering target which is used for depositing a thin film having high electron mobility and high operational reliability, a method of manufacturing thin-film transistors (TFTs) using the same, and a TFT manufactured using the same. The oxide semiconductor sputtering target is used in a sputtering process for depositing an active layer on a TFT. The oxide semiconductor sputtering target is made of a material based on a composition including indium (In), tin (Sn), gallium (Ga) and oxygen (O). The method includes the step of depositing an active layer using the above-described oxide semiconductor sputtering target. The thin-film transistor may be used in a display device, such as a liquid crystal display (LCD) or an organic light-emitting display (OLED).
    Type: Application
    Filed: May 29, 2013
    Publication date: December 5, 2013
    Applicant: SAMSUNG CORNING PRECISION MATERIALS CO., LTD.
    Inventors: Jinjoo Ha, Seungju Lee, Joo Hye Oh, Johann Cho, Ju Ok Park, In Sung Sohn, Hyungrok Lee, Jin Woo Han
  • Patent number: 8372314
    Abstract: Disclosed are an indium Tin Oxide (ITO) target, a method for manufacturing the same, a transparent conductive film of ITO, and a method for manufacturing the transparent conductive film of ITO. The ITO target includes at least one oxide selected from the group consisting of Sm2O3 and Yb2O3, wherein an amount of the oxide is about 0.5 wt. % to about 10 wt. % based on the weight of the target.
    Type: Grant
    Filed: November 24, 2010
    Date of Patent: February 12, 2013
    Inventors: Bon kyung Koo, Han Ho Yoon, Ju Ok Park, Hyung Ryul Park, Hyun Su Kim, Sung Ryong Choi, Joong Ryeol Choi, Pung Keun Song, Joon-Hong Park
  • Publication number: 20110068003
    Abstract: Disclosed are an indium Tin Oxide (ITO) target, a method for manufacturing the same, a transparent conductive film of ITO, and a method for manufacturing the transparent conductive film of ITO. The ITO target includes at least one oxide selected from the group consisting of Sm2O3 and Yb2O3, wherein an amount of the oxide is about 0.5 wt. % to about 10 wt. % based on the weight of the target.
    Type: Application
    Filed: November 24, 2010
    Publication date: March 24, 2011
    Applicant: SAMSUNG CORNING PRECISION GLASS CO., LTD.
    Inventors: Bon Kyung KOO, Han Ho Yoon, Ju Ok Park, Hyung Ryul Park, Hyun Su Kim, Sung Ryong Choi, Joong Ryeol Choi, Pung Keun Song, Joon-Hong Park
  • Patent number: 7862748
    Abstract: Disclosed are an indium Tin Oxide (ITO) target, a method for manufacturing the same, a transparent conductive film of ITO, and a method for manufacturing the transparent conductive film of ITO. The ITO target includes at least one oxide selected from the group consisting of Sm2O3 and Yb2O3, wherein an amount of the oxide is about 0.5 wt. % to about 10 wt. % based on the weight of the target.
    Type: Grant
    Filed: October 1, 2008
    Date of Patent: January 4, 2011
    Assignee: Samsung Corning Precision Materials Co., Ltd.
    Inventors: Bon Kyung Koo, Han Ho Yoon, Ju Ok Park, Hyung Ryul Park, Hyun Su Kim, Sung Ryong Choi, Joong Ryeol Choi, Pung Keun Song, Joon-Hong Park
  • Publication number: 20090211903
    Abstract: Disclosed are an indium (In) zinc (Zn) oxide based sputtering target, a method of manufacturing the same, and an In Zn oxide based thin film deposited using the In Zn oxide based sputtering target. The In Zn oxide based sputtering target has a composition of (MO2)x(In2O3)y(ZnO)z, in which x:y is about 1:0.01 to 1:1, y:z is about 1:0.1 to 1:10, and M is at least one metal selected from a group consisting of hafnium (Hf), zirconium (Zr), and titanium (Ti).
    Type: Application
    Filed: February 25, 2009
    Publication date: August 27, 2009
    Inventors: Yoon-Gyu LEE, Jin-Ho LEE, Yil-Hwan YOU, Ju-Ok PARK
  • Publication number: 20090211904
    Abstract: Disclosed are a zinc (Zn) oxide based sputtering target, a method of manufacturing the same, and a Zn oxide based thin film deposited using the Zn oxide based sputtering target. The Zn oxide based sputtering target has a composition of InxHoyO3(ZnO)T, in which x+y=2, x:y is about 1:0.001 to 1:1, and T is about 0.1 to 5.
    Type: Application
    Filed: February 26, 2009
    Publication date: August 27, 2009
    Inventors: Yoon-Gyu Lee, Jin-Ho Lee, Yil-Hwan You, Ju-Ok Park
  • Publication number: 20090152511
    Abstract: Disclosed are an indium Tin Oxide (ITO) target, a method for manufacturing the same, a transparent conductive film of ITO, and a method for manufacturing the transparent conductive film of ITO. The ITO target includes at least one oxide selected from the group consisting of Sm2O3 and Yb2O3, wherein an amount of the oxide is about 0.5 wt. % to about 10 wt. % based on the weight of the target.
    Type: Application
    Filed: October 1, 2008
    Publication date: June 18, 2009
    Inventors: Bon Kyung KOO, Han Ho Yoon, Ju Ok Park, Hyung Ryul Park, Hyun Su Kim, Sung Ryong Choi, Joong Ryeol Choi, Pung Keun Song, Joon Hong Park