Patents by Inventor Dae-Seok Na

Dae-Seok Na 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: 10591523
    Abstract: A capacitive sensor is disclosed. The capacitive sensor includes a substrate, a first electrode and a second electrode formed on the substrate, an insulation layer formed on the substrate on which the first electrode and the second electrode are formed, and a sensing layer that is formed on the insulation layer and includes graphene.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: March 17, 2020
    Assignee: Korea University Research and Business Foundation
    Inventors: James Jungho Pak, Dae Seok Na
  • Publication number: 20170276711
    Abstract: A capacitive sensor is disclosed. The capacitive sensor includes a substrate, a first electrode and a second electrode formed on the substrate, an insulation layer formed on the substrate on which the first electrode and the second electrode are formed, and a sensing layer that is formed on the insulation layer and includes graphene.
    Type: Application
    Filed: May 26, 2015
    Publication date: September 28, 2017
    Applicant: Korea University Research and Business Foundation
    Inventors: James Jungho Pak, Dae Seok Na
  • Patent number: 8445898
    Abstract: The present invention relates to an organic/inorganic hybrid thin film passivation layer comprising an organic polymer passivation layer prepared by a UV/ozone curing process and an inorganic thin film passivation layer for blocking moisture and oxygen transmission of an organic electronic device fabricated on a substrate and improving gas barrier property of a plastic substrate; and a fabrication method thereof. Since the organic/inorganic hybrid thin film passivation layer of the present invention converts the surface polarity of an organic polymer passivation layer into hydrophilic by using the UV/ozone curing process, it can improve the adhesion strength between the passivation layer interfaces, increase the light transmission rate due to surface planarization of the organic polymer passivation layer, and enhance gas barrier property by effectively blocking moisture and oxygen transmission.
    Type: Grant
    Filed: April 20, 2011
    Date of Patent: May 21, 2013
    Assignee: Korea Institute of Science and Technology
    Inventors: Jai Kyeong Kim, Jung Soo Park, June Whan Choi, Dae-Seok Na, Jae-Hyun Lim, Joo-Won Lee
  • Publication number: 20120156436
    Abstract: A color conversion luminescent sheet and a method of preparing the same, the color conversion luminescent sheet including: an optical sheet having a plurality of protrusions and depressions on its lower surface; a conductive layer disposed on the upper surface of the optical sheet; a color conversion luminescent layer deposited on the upper surface of the conductive layer and comprising a mixture of nanofibers and nanobeads having a binder resin and a color conversion luminescent material; and a protective layer on the upper surface of the color conversion luminescent layer, the protective layer having a stacked structure including an organic polymer protective layer and an inorganic thin protective layer.
    Type: Application
    Filed: October 20, 2011
    Publication date: June 21, 2012
    Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jai Kyeong KIM, Dae Seok NA
  • Publication number: 20110260147
    Abstract: The present invention relates to an organic/inorganic hybrid thin film passivation layer comprising an organic polymer passivation layer prepared by a UV/ozone curing process and an inorganic thin film passivation layer for blocking moisture and oxygen transmission of an organic electronic device fabricated on a substrate and improving gas barrier property of a plastic substrate; and a fabrication method thereof. Since the organic/inorganic hybrid thin film passivation layer of the present invention converts the surface polarity of an organic polymer passivation layer into hydrophilic by using the UV/ozone curing process, it can improve the adhesion strength between the passivation layer interfaces, increase the light transmission rate due to surface planarization of the organic polymer passivation layer, and enhance gas barrier property by effectively blocking moisture and oxygen transmission.
    Type: Application
    Filed: April 20, 2011
    Publication date: October 27, 2011
    Inventors: Jai Kyeong Kim, Jung Soo Park, June Whan Choi, Dae-Seok Na, Jae-Hyun Lim, Joo-Won Lee
  • Patent number: 8004186
    Abstract: The present invention relates to a white and color photoexcitation light emitting sheet comprising a substrate, a light source formed on the substrate, and a white and color photoexcitation light emitting layer capable of converting a light emitted from the light source into a light having a different wavelength, where the white and color photoexcitation light emitting layer is fabricated by mixing a matrix polymer, white and color photoexcitation light emitting materials and a solvent, spinning the resulting mixture to prepare an ultrafine composite fiber layer of the matrix polymer/photoexcitation light emitting materials, and thermocompressing the ultrafine composite fiber layer; and a method for fabrication thereof. The white and color photoexcitation light emitting sheet according to the present invention has uniform brightness and color coordinates and exhibits high color reproducibility.
    Type: Grant
    Filed: January 26, 2009
    Date of Patent: August 23, 2011
    Assignee: Korea Institute of Science and Technology
    Inventors: Jai Kyeong Kim, Dong Young Kim, Seong Mu Jo, Jung Soo Park, June Whan Choi, Dae Seok Na, Byung Hong Yi, Jae Hyun Lim
  • Patent number: 7951726
    Abstract: The present invention relates to an organic/inorganic hybrid thin film passivation layer comprising an organic polymer passivation layer prepared by a UV/ozone curing process and an inorganic thin film passivation layer for blocking moisture and oxygen transmission of an organic electronic device fabricated on a substrate and improving gas barrier property of a plastic substrate; and a fabrication method thereof. Since the organic/inorganic hybrid thin film passivation layer of the present invention converts the surface polarity of an organic polymer passivation layer into hydrophilic by using the UV/ozone curing process, it can improve the adhesion strength between the passivation layer interfaces, increase the light transmission rate due to surface planarization of the organic polymer passivation layer, and enhance gas barrier property by effectively blocking moisture and oxygen transmission.
    Type: Grant
    Filed: January 27, 2009
    Date of Patent: May 31, 2011
    Assignee: Korea Institute of Science and Technology
    Inventors: Jai Kyeong Kim, Jung Soo Park, June Whan Choi, Dae-Seok Na, Jae-Hyun Lim, Joo-Won Lee
  • Publication number: 20090215279
    Abstract: The present invention relates to an organic/inorganic hybrid thin film passivation layer comprising an organic polymer passivation layer prepared by a UV/ozone curing process and an inorganic thin film passivation layer for blocking moisture and oxygen transmission of an organic electronic device fabricated on a substrate and improving gas barrier property of a plastic substrate; and a fabrication method thereof. Since the organic/inorganic hybrid thin film passivation layer of the present invention converts the surface polarity of an organic polymer passivation layer into hydrophilic by using the UV/ozone curing process, it can improve the adhesion strength between the passivation layer interfaces, increase the light transmission rate due to surface planarization of the organic polymer passivation layer, and enhance gas barrier property by effectively blocking moisture and oxygen transmission.
    Type: Application
    Filed: January 27, 2009
    Publication date: August 27, 2009
    Inventors: Jai Kyeong Kim, Jung Soo Park, June Whan Choi, Dae-Seok Na, Jae-Hyun Lim, Joo-Won Lee
  • Publication number: 20090212695
    Abstract: The present invention relates to a white and color photoexcitation light emitting sheet comprising a substrate, a light source formed on the substrate, and a white and color photoexcitation light emitting layer capable of converting a light emitted from the light source into a light having a different wavelength, where the white and color photoexcitation light emitting layer is fabricated by mixing a matrix polymer, white and color photoexcitation light emitting materials and a solvent, spinning the resulting mixture to prepare an ultrafine composite fiber layer of the matrix polymer/photoexcitation light emitting materials, and thermocompressing the ultrafine composite fiber layer; and a method for fabrication thereof. The white and color photoexcitation light emitting sheet according to the present invention has uniform brightness and color coordinates and exhibits high color reproducibility.
    Type: Application
    Filed: January 26, 2009
    Publication date: August 27, 2009
    Inventors: Jai Kyeong Kim, Dong Young Kim, Seong Mu Jo, Jung Soo Park, June Whan Choi, Dae Seok Na, Byung Hong Yi, Jae Hyun Lim