Patents by Inventor Hyun-jong Chung

Hyun-jong Chung 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: 20110089995
    Abstract: Provided is a graphene device and a method of manufacturing the same. The graphene device may include an upper oxide layer on at least one embedded gate, and a graphene channel and a plurality of electrodes on the upper oxide layer. The at least one embedded gate may be formed on the substrate. The graphene channel may be formed on the plurality of electrodes, or the plurality of electrodes may be formed on the graphene channel.
    Type: Application
    Filed: August 25, 2010
    Publication date: April 21, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Jin seong Heo, Sun-ae Seo, Dong-chul Kim, Yun-sung Woo, Hyun-jong Chung
  • Publication number: 20110089403
    Abstract: An electronic device, a transparent display and methods for fabricating the same are provided, the electronic device including a first, a second and a third element each formed of a two-dimensional (2D) sheet material. The first, second, and third elements are stacked in a sequential order or in a reverse order. The second element is positioned between the first element and the third element. The second element has an insulator property, the first and third elements have a metal property or a semiconductor property.
    Type: Application
    Filed: September 7, 2010
    Publication date: April 21, 2011
    Inventors: Yun-sung Woo, Sun-ae Seo, Dong-chul Kim, Hyun-jong Chung
  • Publication number: 20110092054
    Abstract: Methods of fixing graphene using a laser beam and methods of manufacturing an electronic device are provided, the method of fixing graphene includes fixing a defect of a graphene nanoribbon by irradiating the laser beam onto the graphene nanoribbon.
    Type: Application
    Filed: August 27, 2010
    Publication date: April 21, 2011
    Inventors: Sun-ae Seo, Dong-chul Kim, Yun-sung Woo, Hyun-jong Chung, Jin-seong Heo
  • Publication number: 20100157408
    Abstract: A display device may include a substrate, a thin film layer formed on the substrate and/or having a light absorptance that varies according to an electric field applied to the thin film layer, and/or electrodes disposed to apply the electric field to the thin film layer and/or configured to change the electric field applied to the thin film layer.
    Type: Application
    Filed: December 8, 2009
    Publication date: June 24, 2010
    Inventor: Hyun-jong Chung
  • Publication number: 20100090759
    Abstract: A quantum interference transistor may include a source; a drain; N channels (N?2), between the source and the drain, and having N?1 path differences between the source and the drain; and at least one gate disposed at one or more of the N channels. One or more of the N channels may be formed in a graphene sheet. A method of manufacturing the quantum interference transistor may include forming one or more of the N channels using a graphene sheet. A method of operating the quantum interference transistor may include applying a voltage to the at least one gate. The voltage may shift a phase of a wave of electrons passing through a channel at which the at least one gate is disposed.
    Type: Application
    Filed: September 23, 2009
    Publication date: April 15, 2010
    Inventors: Jai-kwang Shin, Sun-ae Seo, Jong-seob Kim, Ki-ha Hong, Hyun-jong Chung
  • Publication number: 20090294759
    Abstract: Provided are a stack structure including an epitaxial graphene, a method of forming the stack structure, and an electronic device including the stack structure. The stack structure includes: a Si substrate; an under layer formed on the Si substrate; and at least one epitaxial graphene layer formed on the under layer.
    Type: Application
    Filed: August 29, 2008
    Publication date: December 3, 2009
    Inventors: Yun-sung Woo, Sun-ae Seo, Dong-chul Kim, Hyun-jong Chung, Dae-young Jeon
  • Publication number: 20090251267
    Abstract: An inductor may include a conductive line including a material in which an electrical resistance varies depending on an electric field applied to the material and/or first and second electrodes electrically connected to first and second end portions of the conductive line, respectively. A method of operating an inductor may include applying current to a conductive line of the inductor. The conductive line may include a material in which an electrical resistance may vary depending on an electric field applied to the material. The current may be applied to the conductive line via first and second electrodes electrically connected to first and second end portions of the conductive line, respectively.
    Type: Application
    Filed: October 29, 2008
    Publication date: October 8, 2009
    Inventors: Dae-young Jeon, Dong-chul Kim, Sun ae Seo, Ran-ju Jung, Yun-sung Woo, Hyun-jong Chung
  • Publication number: 20090032795
    Abstract: A Schottky diode and a memory device including the same are provided. The Schottky diode includes a first metal layer and an Nb-oxide layer formed on the first metal layer.
    Type: Application
    Filed: February 15, 2008
    Publication date: February 5, 2009
    Inventors: Dong-chul Kim, Ran-ju Jung, Sun-ae Seo, Bae-ho Park, Chang-won Lee, Hyun-jong Chung, Jin-soo Kim
  • Publication number: 20090020399
    Abstract: Provided is an electromechanical switch and a method of manufacturing the same. The electromechanical switch includes an elastic conductive layer that moves by the application of an electric field, wherein the elastic conductive layer includes at least one layer of graphene.
    Type: Application
    Filed: October 31, 2007
    Publication date: January 22, 2009
    Inventors: Dong-chul Kim, Ran-ju Jung, Sun-ae Seo, Chang-won Lee, Hyun-jong Chung
  • Publication number: 20080312088
    Abstract: Provided are a field effect transistor, a logic circuit including the same and methods of manufacturing the same. The field effect transistor may include an ambipolar layer that includes a source region, a drain region, and a channel region between the source region and the drain region, wherein the source region, the drain region, and the channel region may be formed in a monolithic structure, a gate electrode on the channel region, and an insulating layer separating the gate electrode from the ambipolar layer, wherein the source region and the drain region have a width greater than that of the channel region in a second direction that crosses a first direction in which the source region and the drain region are connected to each other.
    Type: Application
    Filed: December 27, 2007
    Publication date: December 18, 2008
    Inventors: Hyun-jong Chung, Ran-ju Jung, Sun-ae Seo, Dong-chul Kim, Chang-won Lee
  • Publication number: 20080284481
    Abstract: Provided is a cross-point latch and a method of operating the cross-point latch. The cross-point latch includes a signal line, two control lines crossing the signal line, and unipolar switches disposed at crossing points between the signal line and the control lines.
    Type: Application
    Filed: September 21, 2007
    Publication date: November 20, 2008
    Inventors: Hyun-Jong Chung, Sun-ao Seo, Chang-won Lee, Dao-young Jeon, Ran-ju Jung, Dong-chul Kim, Ji-young Bae
  • Patent number: 5468263
    Abstract: The present invention relates to an alkylphenyl poly(oxyalkylene) polyamine acid ester fuel detergent effective for controlling deposit generated in an automobile engine, prepared by reacting polyamine and alkylphenyl poly(oxyalkylene) maleate derivative prepared by reaction of alkylphenyl poly(oxyalkylene) alcohol and maleic anhydride, through Michael reaction. A fuel detergent diluted solution comprising 5-70 wt % of said fuel detergent and an inert organic solvent, and a hydrocarbon fuel composition comprising thereof are prepared. The present invention does not use deadly toxic phosgene gas used in preparation of a deposit control additive for conventional polyether amine deposit control additive and prevents generation of amine salt to eliminate the process for removing amine salt.
    Type: Grant
    Filed: February 18, 1994
    Date of Patent: November 21, 1995
    Assignee: Yukong Limited
    Inventors: Hyun-jong Chung, Sang-chul Yim, Bon-chul Ku, Ho-young Guen, Duk-han Kim