Patents by Inventor Il-Doo Kim

Il-Doo Kim 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: 8609018
    Abstract: The present invention provides an electrode for a supercapacitor, a fabrication method thereof, and a supercapacitor comprising the same. The electrode exhibits enhanced specific capacitance and electrical conductivity, among others, due to the fact that it comprises a porous composite metal oxide layer which has the structure of a web of entangled nanofibers or has a nanoparticle network structure.
    Type: Grant
    Filed: October 15, 2009
    Date of Patent: December 17, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Il Doo Kim, Doo Young Youn
  • Patent number: 8558324
    Abstract: a composite dielectric thin film capable of high dielectric constant, low leakage current characteristics, and high dielectric breakdown voltage while being deposited at a room temperature, a capacitor and a field effect transistor (FET) using the same, and their fabrication methods. The composite dielectric thin film is deposited at a room temperature or less than 200° C. and comprises crystalline or amorphous insulating filler uniformly distributed within an amorphous dielectric matrix or within an amorphous and partially nanocrystalline dielectric matrix.
    Type: Grant
    Filed: May 4, 2009
    Date of Patent: October 15, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Il-Doo Kim, Dong-Hun Kim, Ho-Gi Kim, Nam-Gyu Cho
  • Patent number: 8518178
    Abstract: Disclosed is: a single crystalline silicon carbide nanofiber having improved thermal and mechanical stability as well as a large specific surface area which is applicable to a system for purifying exhaust gas, silicon carbide fiber filter, diesel particulate filter having a high temperature stability and may be used in the form of nanostructures such as nanorods and nanoparticles.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: August 27, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Il Doo Kim, Seung Hun Choi, Seong Mu Jo, Jae-Min Hong
  • Patent number: 8384082
    Abstract: Disclosed are a transistor including a gate insulation layer and an organic passivation layer of a polymer thin film, and a fabrication method thereof. The transistor comprises a substrate, a gate electrode formed on the substrate, a gate insulation layer including a polymethacrylic acid thin film, formed on the gate electrode and the substrate, a channel layer formed on the gate insulation layer, source electrode and drain electrode formed on the channel layer so as to expose at least a part of the channel layer, and an organic passivation layer including a polymethacrylic acid thin film, formed on the source electrode, drain electrode and the partially exposed channel layer.
    Type: Grant
    Filed: April 30, 2010
    Date of Patent: February 26, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Il Doo Kim, Dong Hun Kim, Seung Hun Choi
  • Publication number: 20120273784
    Abstract: A transfer layer includes a transparent substrate. A buffer layer is formed on the transparent substrate that comprises PbO, GaN, PbTiO3, La0.5Sr0.5CoO3 (LSCO), or LaxPb1-xCoO3 (LPCO) so that separation between the buffer layer and the transparent substrate occurs at substantially high temperatures.
    Type: Application
    Filed: June 27, 2012
    Publication date: November 1, 2012
    Applicant: MASSACHUSETTS INSTITUTE OF TECHNOLOGY
    Inventors: Il-Doo Kim, Harry L. Tuller, Yong Woo Choi, Akintunde I. Akinwande
  • Patent number: 8255580
    Abstract: An image display device and method of changing extended display identification data (EDID) information includes a first storage unit which stores extended display identification data (EDID) information to be provided to the source providing device, a second storage unit which stores at least one version of the EDID information which is different from the EDID information stored in the first storage unit, and a control unit which replaces the EDID information stored in the first storage unit with the different version of the EDID information stored in the second storage unit if an EDID information change request signal is input. Accordingly, compatibility of the EDID information between the source providing device and the image display device can be maintained.
    Type: Grant
    Filed: October 24, 2011
    Date of Patent: August 28, 2012
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Ho-woong Kang, Il-doo Kim
  • Patent number: 8243420
    Abstract: A porous conducting metal oxide electrode prepared by depositing a porous conducting metal oxide film containing a conducting metal oxide film layer having a network structure of nanofibers, containing nanograins or nanoparticles, on at least one surface of a current collector, and a conducting metal oxide coating layer on the network layer of the porous conducting metal oxide through a constant current method or a cyclic voltammetric method; and a high-speed charge/discharge and ultrahigh-capacity supercapacitor using the porous conducting metal oxide electrode are provided.
    Type: Grant
    Filed: August 11, 2008
    Date of Patent: August 14, 2012
    Assignee: Korea Institute of Science and Technology
    Inventors: Il Doo Kim, Jae-Min Hong, Seong Mu Jo, Dong Young Kim
  • Patent number: 8237930
    Abstract: Provided is an oxygen sensor using surface plasmon resonance, including: a laser diode emitting light; a polarizer converting the emitted light into polarized light; a prism receiving the polarized light from the polarizer and having a sensor substrate on one surface thereof so that the polarized light is reflected, the sensor substrate coated with oxygen-sensitive organic material; an oxygen concentration measurement chamber provided to enclose the sensor substrate so that oxygen whose concentration is to be measured is contained therein; a photodiode measuring an amount of light reflected from the prism; and a microcontroller unit controlling operation of the oxygen sensor and calculating the oxygen concentration.
    Type: Grant
    Filed: August 18, 2009
    Date of Patent: August 7, 2012
    Assignee: Korea Institute of Science and Technology
    Inventors: Jae Min Hong, Hee Dok Choi, Il Doo Kim
  • Patent number: 8232182
    Abstract: A transfer layer includes a transparent substrate. A buffer layer is formed on the transparent substrate that comprises PbO, GaN, PbTiO3, La0.5Sr0.5CoO3 (LSCO), or LaxPb1-xCoO3 (LPCO) so that separation between the buffer layer and the transparent substrate occurs at substantially high temperatures.
    Type: Grant
    Filed: September 7, 2005
    Date of Patent: July 31, 2012
    Assignee: Massachusetts Institute of Technology
    Inventors: Il-Doo Kim, Harry L. Tuller, Yong Woo Choi, Akintunde I. Akinwande
  • Publication number: 20120107683
    Abstract: A composite of electrode active material including aggregates formed by self-assembly of electrode active material nanoparticles and carbon nanotubes, and a fabrication method thereof are disclosed. This composite is in the form of a network in which at least some of the carbon nanotubes connect two or more aggregates that are not directly contacting each other, creating an entangled structure in which a plurality of aggregates and a plurality of carbon nanotube strands are intertwined. Due to the highly conductive properties of the carbon nanotubes in this composite, charge carriers can be rapidly transferred between the self-assembled aggregates. This composite may be prepared by preparing a dispersion in which the nanoparticles and/or carbon nanotubes are dispersed without any organic binders, simultaneously spraying the nanoparticles and the carbon nanotubes on a current collector through electrospray, and then subjecting the composite material formed on the current collector to a heat treatment.
    Type: Application
    Filed: October 20, 2011
    Publication date: May 3, 2012
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Il Doo KIM, Jin Hoon CHOI
  • Publication number: 20120100303
    Abstract: Disclosed are amorphous carbon nanofibers including copper nanoparticles or copper alloy nanoparticles, copper composite nanoparticles prepared by grinding the amorphous carbon nanofibers and implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons, a dispersed solution including the copper composite nanoparticles, and preparation methods thereof and the amorphous carbon nanofibers include nanoparticles including copper, copper nanoparticles or copper alloy nanoparticles, and, the copper composite nanoparticles are implemented as surfaces of Cu-included particles are partially or wholly coated with amorphous carbons.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 26, 2012
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Il Doo KIM, Yong-Won SONG, Jae-Min HONG
  • Publication number: 20120063058
    Abstract: Disclosed are a composite electrode active material and a supercapacitor using the same, and more particularly, an electrode active material having M1-xRuxO3 (M=Sr, Ba, Mg) and a supercapacitor using the same, wherein the electrode active material is characterized by comprising M1-xRuxO3, where M is at least one selected from a group consisting of strontium, barium and magnesium, and a method for fabricating a composite electrode active material comprises (a) preparing a spinning solution containing a precursor of M oxide, a precursor of Ru oxide, a polymer and a solvent, (b) spinning the spinning solution on a collector to fabricate a nanofiber web having M1-xRuxO3 precursor, and (c) performing heat treatment for the nanofiber web to remove the polymer so as to make an electrode active material in the structure of porous nanofiber web having M1-xRuxO3, wherein the M comprises at least one selected from a group consisting of strontium, barium and magnesium.
    Type: Application
    Filed: September 13, 2010
    Publication date: March 15, 2012
    Inventors: Il Doo KIM, Yong-Won SONG, Tae Seon HYUN
  • Publication number: 20120042713
    Abstract: The present invention provides a gas sensor, including: a sensor substrate provided with an electrode; and a thin layer of sensor material formed by spraying a solution in which metal oxide nanoparticles are dispersed onto the sensor substrate. The gas sensor is advantageous in that a sensor material is formed into a porous thin layer containing metal oxide nanoparticles having a large specific surface area, thus realizing high sensitivity on the ppb scale and a high reaction rate. Further, the gas sensor is advantageous in that it can be manufactured at room temperature, and the thickness of a sensor material can be easily adjusted by adjusting the spray time, so that a thin gas sensor or a thick gas sensor can be easily manufactured.
    Type: Application
    Filed: April 30, 2010
    Publication date: February 23, 2012
    Applicants: Korea Institute of Science and Technology, Amogreentech Co., Ltd.
    Inventors: Il-Doo Kim, Dong-Young Kim, Sung-Yeon Jang, Seong-Mu Jo, Jae-Min Hong, Yun-Seok Lee, Sung-Chul Yang
  • Publication number: 20120038655
    Abstract: An image display device and method of changing extended display identification data (EDID) information includes a first storage unit which stores extended display identification data (EDID) information to be provided to the source providing device, a second storage unit which stores at least one version of the EDID information which is different from the EDID information stored in the first storage unit, and a control unit which replaces the EDID information stored in the first storage unit with the different version of the EDID information stored in the second storage unit if an EDID information change request signal is input. Accordingly, compatibility of the EDID information between the source providing device and the image display device can be maintained.
    Type: Application
    Filed: October 24, 2011
    Publication date: February 16, 2012
    Applicant: Samsung Electronics Co. Ltd
    Inventors: Ho-woong KANG, Il-doo KIM
  • Patent number: 8069276
    Abstract: An image display device and method of changing extended display identification data (EDID) information includes a first storage unit which stores extended display identification data (EDID) information to be provided to the source providing device, a second storage unit which stores at least one version of the EDID information which is different from the EDID information stored in the first storage unit, and a control unit which replaces the EDID information stored in the first storage unit with the different version of the EDID information stored in the second storage unit if an EDID information change request signal is input. Accordingly, compatibility of the EDID information between the source providing device and the image display device can be maintained.
    Type: Grant
    Filed: February 5, 2008
    Date of Patent: November 29, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ho-woong Kang, Il-doo Kim
  • Publication number: 20110274906
    Abstract: Disclosed is: a single crystalline silicon carbide nanofiber having improved thermal and mechanical stability as well as a large specific surface area which is applicable to a system for purifying exhaust gas, silicon carbide fiber filter, diesel particulate filter having a high temperature stability and may be used in the form of nanostructures such as nanorods and nanoparticles.
    Type: Application
    Filed: January 24, 2011
    Publication date: November 10, 2011
    Applicant: Korea Institute of Science and Technology
    Inventors: Il Doo KIM, Seung Hun Choi, Seong Mu Jo, Jae-Min Hong
  • Patent number: 8048567
    Abstract: There is provided a metal oxide having a continuous nano-fiber network structure as a negative active material for a secondary battery. A method for fabricating such negative active material for a secondary battery comprises spinning a mixed solution of a metal oxide precursor and a polymer onto a collector to form composite fibers mixed with the metal oxide precursor and the polymer, thermally compressing or thermally pressurizing the composite fibers, and thermally treating the thermally compressed or thermally pressurized composite fibers to remove the polymer from the composite fiber.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: November 1, 2011
    Assignee: Korea Institute of Science and Technology
    Inventors: Il-Doo Kim, Jae-Min Hong, Seong-Mu Jo
  • Publication number: 20110151255
    Abstract: A nanofiber, which is prepared by using a fabrication method comprising the steps of spinning a spinning solution prepared by dissolving at least one precursor for metal, metal oxide, or metal complex oxide with a polymer mixture comprising at least two polymers having different molecular weights and glass transition temperatures in a solvent and thermally treating the spun fiber, comprises close-packed nanoparticles of a metal, a metal oxide, a metal complex oxide or a mixture thereof and has excellent structural, thermal, and mechanical stability as well as a uniform fiber-shape.
    Type: Application
    Filed: April 5, 2010
    Publication date: June 23, 2011
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Il Doo Kim, Soo Hyun Kim
  • Publication number: 20110114953
    Abstract: Disclosed are a transistor including a gate insulation layer and an organic passivation layer of a polymer thin film, and a fabrication method thereof. The transistor comprises a substrate, a gate electrode formed on the substrate, a gate insulation layer including a polymethacrylic acid thin film, formed on the gate electrode and the substrate, a channel layer formed on the gate insulation layer, source electrode and drain electrode formed on the channel layer so as to expose at least a part of the channel layer, and an organic passivation layer including a polymethacrylic acid thin film, formed on the source electrode, drain electrode and the partially exposed channel layer.
    Type: Application
    Filed: April 30, 2010
    Publication date: May 19, 2011
    Inventors: Il Doo KIM, Dong Hun KIM, Seung Hun CHOI
  • Publication number: 20100167078
    Abstract: Disclosed are a method for fabricating nanopowders, nano ink containing the nanopowders and micro rods, and nanopowders containing nanoparticles, nano clusters or mixture thereof, milled from nano fiber composed of at least one kind of nanoparticles selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, nano ink containing the nanopowders and microrods, the method comprising spinning a spinning solution containing at least one kind of precursor capable of composing at least one kind selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, crystallizing or amorphizing the spun precursor to produce nano fiber containing at least one kind of nanoparticles selected from a group consisting of metal, nonmetal, metal oxide, metal compound, nonmetal compound and composite metal oxide, and milling the nano fiber to fabricate nanopowders containing nanoparticles, nano clusters or
    Type: Application
    Filed: December 23, 2009
    Publication date: July 1, 2010
    Inventors: Il Doo KIM, Seung hun CHOI