Patents by Inventor Hyoyoung Lee

Hyoyoung Lee 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: 20170125696
    Abstract: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; and an organic layer that is between the first electrode and the second electrode and includes an emission layer, wherein the organic layer includes a compound represented by Formula 1: When compounds represented by Formula 1 are used as an electron transport material, excellent I-V-L characteristics may be obtained.
    Type: Application
    Filed: June 9, 2016
    Publication date: May 4, 2017
    Inventors: Junha Park, Youngkook Kim, Munki Sim, Eunyoung Lee, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang
  • Publication number: 20170110671
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer comprises a compound represented by Formula 1. An organic light-emitting device including the compound may have high efficiency, low voltage, high luminance, and a long lifespan.
    Type: Application
    Filed: June 8, 2016
    Publication date: April 20, 2017
    Inventors: Eunyoung Lee, Youngkook Kim, Junha Park, Munki Sim, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang
  • Publication number: 20170104167
    Abstract: An organic light-emitting device includes a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a compound represented by Formula 1:
    Type: Application
    Filed: May 23, 2016
    Publication date: April 13, 2017
    Inventors: Munki Sim, Eunyoung Lee, Youngkook Kim, Junha Park, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang, Mikyung Kim, Seunggak Yang
  • Publication number: 20170088429
    Abstract: A method of manufacturing a MXene nanosheet includes removing an A atomic layer from an inorganic compound having a formula of Mn+1AXn to form a nanosheet, the nanosheet having a formula of Mn+1XnTs, and reducing the nanosheet having a formula of Mn+1XnTsto form an MXene nanosheet, the MXene nanosheet having a formula of Mn+1Xn, wherein M is at least one of Group 3 transition metal, Group 4 transition metal, Group 5 transition metal, and Group 6 transition metal, A is at least one of a Group 12 element, Group 13 element, Group 14 element, Group 15 element and Group 16 element, X is one of carbon (C), nitrogen (N) and a combination thereof, Ts is one of oxide (O), epoxide, hydroxide (OH), alkoxide having 1-5 carbon atoms, fluoride (F), chloride (Cl), bromide (Br), iodide (I), and a combination thereof, and n is one of 1, 2 and 3.
    Type: Application
    Filed: July 28, 2016
    Publication date: March 30, 2017
    Applicants: Samsung Electronics Co., Ltd., Research & Business Foundation Sungkyunkwan University
    Inventors: HYEONJIN SHIN, Hyoyoung LEE, Yeoheung Yoon
  • Patent number: 9576707
    Abstract: A conductive thin film, a transparent electrode, and methods of producing the same are provided. A method for preparing a conductive thin film may involve forming a layer of reduced graphene oxide and carbon nanotube on a substrate using a reducing agent containing a halogen atom.
    Type: Grant
    Filed: July 26, 2013
    Date of Patent: February 21, 2017
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Hyoyoung Lee, Eun Hee Hwang, Hye Mi Lee, Jung Hyun Lee, Eun Kyo Lee, Gi Youn Kim
  • Publication number: 20170040549
    Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including a compound represented by Formula 1. The organic light-emitting device including the compound of Formula 1 may have high efficiency, low driving voltage, high brightness, and long lifespan characteristics.
    Type: Application
    Filed: March 30, 2016
    Publication date: February 9, 2017
    Inventors: Eunjae Jeong, Youngkook Kim, Junha Park, Munki Sim, Eunyoung Lee, Hyoyoung Lee, Seokhwan Hwang
  • Publication number: 20170033297
    Abstract: Provided are a condensed cyclic compound and an organic light-emitting device including the same. The material is represented by the formula A2-(A1)n1, wherein A2 may be selected from groups represented by Formula 2, A1 may be selected from groups represented by Formulae 2-1 to 2-4, and n1 may be an integer selected from 1 to 5: Organic light-emitting devices manufactured using this material were found to have lower driving voltages, higher brightness values, higher efficiencies, and longer half-lifespans.
    Type: Application
    Filed: February 5, 2016
    Publication date: February 2, 2017
    Inventors: Junha Park, Youngkook Kim, Sungsoo Bae, Munki Sim, Eunyoung Lee, Hyoyoung Lee, Eunjae Jeong, Seokhwan Hwang
  • Publication number: 20160376154
    Abstract: Functionalized reduced graphene oxide (functionalized rGO), and a method of producing the same are provided.
    Type: Application
    Filed: September 13, 2016
    Publication date: December 29, 2016
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventor: Hyoyoung LEE
  • Publication number: 20160236175
    Abstract: The following description related to a reduced titanium dioxide, which is formed by reducing rutile titanium dioxide and includes a disordered surface, a preparing method the same, and a photocatalyst including the reduced titanium dioxide.
    Type: Application
    Filed: February 11, 2016
    Publication date: August 18, 2016
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyoyoung LEE, Luyang WANG, Youngmin KIM
  • Patent number: 9388049
    Abstract: A method of producing reduced graphene oxide and reduce graphene oxide produced by the method are provided. The method of producing reduced graphene oxide involves forming a graphene oxide-dispersed solution comprising graphene oxide and a surfactant that comprises at least two aromatic functional groups, reducing the graphene oxide-dispersed solution to obtain a layered structure of reduced graphene oxide comprising the at least two aromatic functional groups, and dispersing the layered structure of reduced graphene oxide in a solvent to produce a multi-layered reduced graphene oxide.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: July 12, 2016
    Assignee: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventor: Hyoyoung Lee
  • Patent number: 9377662
    Abstract: The following description relates to an electrochromic device including a carbon-based material and a viologen-based compound, a method for producing the electrochromic device, and use thereof. There is provided the electrochromic device including an active layer arranged between a first electrode and a second electrode, in which the active layer includes a carbon-based material and a viologen-based compound, and the carbon-based material and the viologen-based compound are bonded to each other through a non-covalent interaction.
    Type: Grant
    Filed: August 4, 2015
    Date of Patent: June 28, 2016
    Assignee: Research & Business Foundation Sungkyunkwan University
    Inventors: Hyoyoung Lee, Eunhee Hwang, Sohyeon Seo
  • Publication number: 20160095212
    Abstract: The present application relates to a transparent electrode and a method for manufacturing the same.
    Type: Application
    Filed: February 28, 2014
    Publication date: March 31, 2016
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyoyoung LEE, Hanleem LEE
  • Patent number: 9287518
    Abstract: The present disclosure relates to a light emitting device using a graphene quantum dot, and an organic light emitting device including the same.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: March 15, 2016
    Assignee: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyoyoung Lee, Jung Hyun Lee, Yong Hun Shin
  • Patent number: 9284195
    Abstract: Aggregated graphene oxide includes a range of specific surface area, and a method of preparing aggregated graphene oxide includes dispersing graphene oxide in an organic solvent and adding an anti-solvent. Aggregated graphene includes a range of specific surface area, and a method of preparing aggregated graphene includes dispersing graphene oxide in an organic solvent, adding an anti-solvent, and reducing the aggregated graphene oxide. Aggregated and nitrogen-doped includes a range of specific surface area, and a method of preparing aggregated and nitrogen-doped graphene includes dispersing graphene oxide in an organic solvent, adding an anti-solvent, and photo-reacting the aggregated graphene oxide.
    Type: Grant
    Filed: January 30, 2014
    Date of Patent: March 15, 2016
    Assignee: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyoyoung Lee, Yeo Heung Yoon, Chul Baik, Keun Sik Lee
  • Patent number: 9284194
    Abstract: An agent for reducing graphene oxide and a method for preparing reduced graphene oxide or graphene are provided. An agent for reducing graphene oxide include a mixture of a reducing agent containing a halogen element with trifluoroacetic acid (CF3COOH).
    Type: Grant
    Filed: August 9, 2013
    Date of Patent: March 15, 2016
    Assignee: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyoyoung Lee, Peng Cui
  • Publication number: 20160060121
    Abstract: The present disclosure relates to graphene quantum dot and a method for preparing the graphene quantum dot.
    Type: Application
    Filed: August 26, 2015
    Publication date: March 3, 2016
    Applicants: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, GRAPHENEALL CO., LTD.
    Inventors: Hyoyoung LEE, Yong Hun SHIN, Daesun HYUN, Jintaek PARK, Kyoung Soo KIM
  • Publication number: 20160064681
    Abstract: The present disclosure relates to a light emitting device using graphene quantum dot and a preparing method of the light emitting device using graphene quantum dot.
    Type: Application
    Filed: August 27, 2015
    Publication date: March 3, 2016
    Applicants: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY, GRAPHENEALL CO., LTD.
    Inventors: Hyoyoung LEE, Yong Hun SHIN, Daesun HYUN, Jintaek PARK, Kyoung Soo KIM
  • Publication number: 20160033839
    Abstract: The following description relates to an electrochromic device including a carbon-based material and a viologen-based compound, a method for producing the electrochromic device, and use thereof. There is provided the electrochromic device including an active layer arranged between a first electrode and a second electrode, in which the active layer includes a carbon-based material and a viologen-based compound, and the carbon-based material and the viologen-based compound are bonded to each other through a non-covalent interaction.
    Type: Application
    Filed: August 4, 2015
    Publication date: February 4, 2016
    Applicant: RESEARCH AND BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyoyoung LEE, Eunhee HWANG, Sohyeon SEO
  • Publication number: 20150368804
    Abstract: The present disclosure relates to a metal-containing graphene hybrid composite, a preparing method of the metal-containing graphene hybrid composite, and a preparing method of a metal-containing graphene hybrid film.
    Type: Application
    Filed: April 17, 2015
    Publication date: December 24, 2015
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Hyoyoung LEE, Yeoheung YOON
  • Publication number: 20150361089
    Abstract: A functionalized graphene composition, doped-reduced graphene oxide and methods of producing the same are provided. The method of producing doped-reduced graphene oxide involves a step of dispersing a graphene oxide in an organic solvent, and a step of adding BF3-etherate, and alkylthiol, arylthiol, alkylamine, or arylamine to the organic solvent in which the graphene oxide is dispersed to obtain a fluorine doped-reduced graphene oxide.
    Type: Application
    Filed: December 11, 2014
    Publication date: December 17, 2015
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventor: Hyoyoung LEE