Patents by Inventor Yun-sung Woo

Yun-sung Woo 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: 9755179
    Abstract: A conductor includes a plurality of metal nanostructures having a circular cross-sectional shape, where each of the metal nanostructure is surrounded by an organic material having a thickness of less than or equal to about 0.5 nm. A method of manufacturing a conductor includes preparing a metal nanostructure having a polygonal cross-sectional shape, and providing a metal nanostructure having a circular cross-sectional shape by supplying light to the metal nanostructure having a polygonal cross-sectional shape.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: September 5, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun Sung Woo, Jinyoung Hwang, Weonho Shin, Hyangsook Lee, Chan Kwak
  • Publication number: 20170194074
    Abstract: An electrical conductor including a substrate, a first conductive layer including graphene, and a second conductive layer including a conductive metal nanowire, wherein the first conductive layer and the second conductive layer are disposed on the substrate, wherein the first conductive layer is disposed between the substrate and the second conductive layer or on the second conductive layer, wherein the first conductive layer has a first surface facing the second conductive layer and a second surface which is opposite to the first surface, and wherein, in the first surface and the second surface, the graphene is p-doped with a p-type dopant.
    Type: Application
    Filed: January 3, 2017
    Publication date: July 6, 2017
    Inventors: Hiesang SOHN, Weonho SHIN, Yun Sung WOO
  • Publication number: 20170133469
    Abstract: A transparent electrode including: a substrate; a first layer disposed on the substrate, the first layer including a graphene mesh structure, the graphene mesh structure including graphene and a plurality of holes; and a second layer disposed on the first layer, wherein the second layer includes a plurality of conductive nanowires.
    Type: Application
    Filed: August 15, 2016
    Publication date: May 11, 2017
    Inventors: Yun Sung WOO, Hiesang SOHN, Weonho SHIN, Eun-Hyoung CHO, Chan KWAK, Hyeon Cheol PARK, Youngjin CHO, Dong-Su KO, Woong KO, Kwanghee KIM
  • Publication number: 20170125136
    Abstract: A transparent electrode including: a first layer including a thermosetting copolymer including a first repeating unit having an aromatic moiety as a pendant group or incorporated in a backbone of the copolymer and a second repeating unit capable of lowering a curing temperature, a combination of a first polymer including the first repeating unit and a second polymer including the second repeating unit, or a combination thereof; a second layer disposed directly on one side of the first layer, wherein the second layer includes graphene; and a third layer disposed on the second layer, wherein the third layer includes an electrically conductive metal nanowire.
    Type: Application
    Filed: November 4, 2016
    Publication date: May 4, 2017
    Inventors: Hyeon Cheol PARK, Youngjin CHO, Daejin YANG, Chan KWAK, Kwanghee KIM, Weonho SHIN, Yun Sung WOO
  • Publication number: 20170113443
    Abstract: A conductive film including: a substrate; an electrically conductive layer disposed on the substrate, wherein the electrically conductive layer includes a plurality of nano-sized conductors; and a protective layer disposed directly on the electrically conductive layer, wherein the protective layer includes a crosslinked polymer having a perfluorinated backbone.
    Type: Application
    Filed: October 18, 2016
    Publication date: April 27, 2017
    Inventors: Daejin YANG, Weonho SHIN, Yun Sung WOO, Hyeon Cheol PARK
  • Publication number: 20170040566
    Abstract: A conductor includes a plurality of metal nanostructures having a circular cross-sectional shape, where each of the metal nanostructure is surrounded by an organic material having a thickness of less than or equal to about 0.5 nm. A method of manufacturing a conductor includes preparing a metal nanostructure having a polygonal cross-sectional shape, and providing a metal nanostructure having a circular cross-sectional shape by supplying light to the metal nanostructure having a polygonal cross-sectional shape.
    Type: Application
    Filed: January 22, 2016
    Publication date: February 9, 2017
    Inventors: Yun Sung WOO, Jinyoung HWANG, Weonho SHIN, Hyangsook LEE, Chan KWAK
  • Patent number: 9544999
    Abstract: A transparent electrode includes: a substrate; an electrically conductive layer disposed on the substrate and including a plurality of nano-sized conductors; and an organic/inorganic composite layer directly disposed on the electrically conductive layer and including a cross-linked polymer and nano-sized inorganic oxide particles, wherein the nano-sized inorganic oxide particles are included in an amount of greater than or equal to about 1 part by weight and less than about 35 parts by weight, relative to 100 parts by weight of the cross-linked polymer. Also an electronic device including the same.
    Type: Grant
    Filed: October 21, 2015
    Date of Patent: January 10, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Weonho Shin, Yun Sung Woo, Daejin Yang, Jinyoung Hwang, Chan Kwak, Hyeon Cheol Park, Jae-Young Choi
  • Publication number: 20160192483
    Abstract: A transparent electrode includes: a substrate; an electrically conductive layer disposed on the substrate and including a plurality of nano-sized conductors; and an organic/inorganic composite layer directly disposed on the electrically conductive layer and including a cross-linked polymer and nano-sized inorganic oxide particles, wherein the nano-sized inorganic oxide particles are included in an amount of greater than or equal to about 1 part by weight and less than about 35 parts by weight, relative to 100 parts by weight of the cross-linked polymer. Also an electronic device including the same.
    Type: Application
    Filed: October 21, 2015
    Publication date: June 30, 2016
    Inventors: Weonho SHIN, Yun Sung WOO, Daejin YANG, Jinyoung HWANG, Chan KWAK, Hyeon Cheol PARK, Jae-Young CHOI
  • Patent number: 9376321
    Abstract: A method and an apparatus for manufacturing a nanowire are provided. The method for manufacturing a nanowire includes i) providing a source gas into a chamber, ii) controlling the temperature of a substrate received in the chamber separately from the temperature of the source gas, iii) forming a temperature gradient on the substrate, and iv) forming a nanowire having at least one growth condition selected from a group of growth speed and growth direction controlled according to the temperature gradient on the substrate.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: June 28, 2016
    Assignee: POSTECH ACADEMY-INDUSTRY FOUNDATION
    Inventors: Moon-Ho Jo, Yun-Sung Woo, Geun-Hee Lee
  • Publication number: 20160180983
    Abstract: A transparent electrode including: a substrate; an undercoat disposed on the substrate; a conductive film disposed on the undercoat and including a plurality of conductive metal nanowires and a carboxyl group-containing cellulose; and an overcoat disposed on the conductive film. Also an electronic device including the transparent electrode.
    Type: Application
    Filed: October 20, 2015
    Publication date: June 23, 2016
    Inventors: Jinyoung HWANG, Kwanghee KIM, Chan KWAK, Hyeon Cheol PARK, Weonho SHIN, Yun Sung WOO, Jae-Young CHOI, Sungjin KIM, Hyosug LEE
  • Patent number: 9373685
    Abstract: A graphene device and an electronic apparatus including the same are provided. According to example embodiments, the graphene device includes a transistor including a source, a gate, and a drain, an active layer through which carriers move, and a graphene layer between the gate and the active layer. The graphene layer may be configured to function both as an electrode of the active layer and a channel layer of the transistor.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: June 21, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyeon-jin Shin, Kyung-eun Byun, Hyun-jae Song, Seong-jun Park, David Seo, Yun-sung Woo, Dong-wook Lee, Jae-ho Lee, Hyun-jong Chung, Jin-seong Heo, In-kyeong Yoo
  • Publication number: 20160163410
    Abstract: An electrically conductive thin film including a plurality of nanosheets including a doped titanium oxide represented by Chemical Formula 1 and having a layered crystal structure: (A?Ti1??)O2+???Chemical Formula 1 wherein, in Chemical Formula 1, ? is greater than 0, A is at least one dopant metal selected from Nb, Ta, V, W, Cr, and Mo, and ? is greater than 0 and less than 1. Also, an electronic device including the electrically conductive thin film.
    Type: Application
    Filed: September 30, 2015
    Publication date: June 9, 2016
    Inventors: Doh Won JUNG, Hee Jung PARK, Yoon Chul SON, Yun Sung WOO, Jongmin LEE, Yong Hee CHO, Kyoung-Seok MOON, Jae-Young CHOI, Kimoon LEE
  • Patent number: 9359211
    Abstract: Methods of fabricating graphene using an alloy catalyst may include forming an alloy catalyst layer including nickel on a substrate and forming a graphene layer by supplying hydrocarbon gas onto the alloy catalyst layer. The alloy catalyst layer may include nickel and at least one selected from the group consisting of copper, platinum, iron and gold. When the graphene is fabricated, a catalyst metal that reduces solubility of carbon in Ni may be used together with Ni in the alloy catalyst layer. An amount of carbon that is dissolved may be adjusted and a uniform graphene monolayer may be fabricated.
    Type: Grant
    Filed: July 12, 2010
    Date of Patent: June 7, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun-sung Woo, David Seo, Sun-ae Seo, Hyun-jong Chung, Sae-ra Kang, Jin-seong Heo
  • Patent number: 9324805
    Abstract: Provided is a graphene switching device including: a graphene layer formed on a substrate; a plurality of semiconductor nanowires on the substrate; a first electrode connected to a second end of the graphene layer; a second electrode on the substrate to face the first electrode so as to be connected to the plurality of semiconductor nanowires; a gate insulating layer on the substrate to cover the graphene layer; and a gate electrode on the gate insulating layer. The gate electrode and the plurality of semiconductor nanowires face each other with the graphene layer therebetween. At least one of the plurality of semiconductor nanowires is connected to at least one of the second electrode, the graphene layer, and the other of the plurality of semiconductor nanowires.
    Type: Grant
    Filed: April 30, 2014
    Date of Patent: April 26, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Yun-sung Woo
  • Publication number: 20160018845
    Abstract: An electrode structure includes: a first nonconductive layer; a first conductive layer disposed on the first nonconductive layer; a second nonconductive layer disposed on the first conductive layer; a second conductive layer disposed on the second nonconductive layer; and a third nonconductive layer disposed on the second conductive layer, where at least one of the first conductive layer and the second conductive layer includes a two-dimensional conductive material.
    Type: Application
    Filed: July 17, 2015
    Publication date: January 21, 2016
    Inventors: Chan KWAK, Jae-Young CHOI, Kwang Hee KIM, Jong Wook ROH, Hyeon Cheol PARK, Weon Ho SHIN, Yun Sung WOO, Hyosug LEE, Jinyoung HWANG
  • Patent number: 9108848
    Abstract: Example embodiments relate to methods of manufacturing and transferring a larger-sized graphene layer. A method of transferring a larger-sized graphene layer may include forming a graphene layer, a protection layer, and an adhesive layer on a substrate and removing the substrate. The graphene layer may be disposed on a transferring substrate by sliding the graphene layer onto the transferring substrate.
    Type: Grant
    Filed: September 21, 2010
    Date of Patent: August 18, 2015
    Assignees: Samsung Electronics Co., Ltd., Sungkyunkwan University Foundation For Corporate Collaboration
    Inventors: Yun-sung Woo, David Seo, Su-kang Bae, Sun-ae Seo, Hyun-jong Chung, Sae-ra Kang, Jin-seong Heo, Myung-hee Jung
  • Patent number: 9053932
    Abstract: A method of preparing graphene includes forming a silicon carbide thin film on a substrate, forming a metal thin film on the silicon carbide thin film, and forming a metal composite layer and graphene on the substrate by heating the silicon carbide thin film and the metal thin film.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: June 9, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong Wook Lee, Hyeon-jin Shin, Seong-jun Park, Kyung-eun Byun, David Seo, Hyun-jae Song, Yun-sung Woo, Jae-ho Lee, Hyun-jong Chung, Jin-seong Heo
  • Publication number: 20150129839
    Abstract: Provided is a graphene switching device including: a graphene layer formed on a substrate; a plurality of semiconductor nanowires on the substrate; a first electrode connected to a second end of the graphene layer; a second electrode on the substrate to face the first electrode so as to be connected to the plurality of semiconductor nanowires; a gate insulating layer on the substrate to cover the graphene layer; and a gate electrode on the gate insulating layer. The gate electrode and the plurality of semiconductor nanowires face each other with the graphene layer therebetween. At least one of the plurality of semiconductor nanowires is connected to at least one of the second electrode, the graphene layer, and the other of the plurality of semiconductor nanowires.
    Type: Application
    Filed: April 30, 2014
    Publication date: May 14, 2015
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Yun-sung WOO
  • Patent number: 9023221
    Abstract: A method of forming a multi-layer graphene includes forming a stack of a graphitizing metal catalyst layer and graphene by repeatedly performing a cycle of first forming the graphitizing metal catalyst layer on a substrate, and then forming the graphene on the graphitizing metal catalyst layer, and removing the graphitizing metal catalyst layer.
    Type: Grant
    Filed: April 20, 2012
    Date of Patent: May 5, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yun-sung Woo, Jae-young Choi, Won-mook Choi, Hyeon-jin Shin, Seon-mi Yoon
  • Patent number: 8999201
    Abstract: Graphene, a method of fabricating the same, and a transistor having the graphene are provided, the graphene includes a structure of carbon (C) atoms partially substituted with boron (B) atoms and nitrogen (N) atoms. The graphene has a band gap. The graphene substituted with boron and nitrogen may be used as a channel of a field effect transistor. The graphene may be formed by performing chemical vapor deposition (CVD) method using borazine or ammonia borane as a boron nitride (B-N) precursor.
    Type: Grant
    Filed: January 23, 2014
    Date of Patent: April 7, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung-hoon Lee, Sun-ae Seo, Yun-sung Woo, Hyun-jong Chung, Jin-seong Heo