Patents by Inventor Dong-Ki Lee

Dong-Ki 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).

  • Patent number: 9637742
    Abstract: The present invention relates to an RNAi-inducing nucleic acid molecule having a new structure and the use thereof, and more particularly to a novel nucleic acid molecule having a structure comprising a first strand, which is 24-121 nt in length and comprises a region complementary to a target nucleic acid, and a second strand which is 13-21 nt in length and has a region that binds complementarily to the region of the first strand, which is complementary to the target nucleic acid, so that the nucleic acid molecule inhibits the expression of a target gene with increased efficiency, and to a method of inhibiting the expression of a target gene using the nucleic acid molecule. The nucleic acid molecule structure of the present invention increases the efficiency with which the nucleic acid molecule inhibits the target gene.
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: May 2, 2017
    Assignee: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventor: Dong Ki Lee
  • Publication number: 20170014813
    Abstract: The present invention discloses a method for improving solar energy conversion efficiency using metal oxide photocatalysts having an energy band of core-shell structure for ultraviolet (UV) ray and visible light absorption, comprising a first process of forming a nanoparticle thin film layer; a second process of preparing a core-shell metal oxide on metal oxide nanoparticles by a plasma reaction under a hydrogen and nitrogen gas atmosphere, and a third process of depositing a transition metal on surfaces of core-shell metal oxide nanoparticles to produce a photocatalyst for energy conversion. A great amount of oxygen vacancies is formed in a shell region by the core-shell metal oxide to achieve effects of improving transfer ability of electron-hole pairs excited by light, and extending a wavelength range of absorbable light to a visible light region by changing a band-gap structure.
    Type: Application
    Filed: June 28, 2016
    Publication date: January 19, 2017
    Inventors: Jeung Ku KANG, Dong Ki LEE, Gyu Heon LEE, Yong-Hoon KIM, Ji Il CHOI
  • Publication number: 20160376716
    Abstract: Disclosed is a method for improving solar energy conversion efficiency of a metal oxide semiconductor photocatalyst, which includes rapidly performing hydrogenation and nitrogenation of a metal oxide semiconductor material through an H2/N2 mixed gas plasma treatment in a single process at room temperature, so as to enhance photocatalytic energy conversion efficiency. Specifically, disclosed is a treatment technique in which a plasma ball formed by controlling a mixing ratio of hydrogen gas to nitrogen gas in a range of 1:1 to 1:3 contacts with a surface of a metal oxide material, such that a great amount of oxygen vacancy and nitrogen elements are introduced in the surface of the metal oxide material to improve electron-hole pairs transfer ability thereof and decrease a size of the band-gap. A catalyst including the metal oxide material directly converts the solar energy into a compound by photocatalytic hydrogen generation and CO2 conversion.
    Type: Application
    Filed: October 28, 2015
    Publication date: December 29, 2016
    Inventors: Jeung Ku KANG, Dong Ki LEE, Gyu Heon LEE, Yong-Hoon KIM, Ji Il CHOI
  • Patent number: 9390684
    Abstract: A three-dimensional image display apparatus includes a display panel configured to display an image and including gate lines, data lines, and pixels connected to the gate lines and the data lines, a data driver configured to drive the data lines, a gate driver configured to drive the gate lines, a lens panel configured to refract light of the image displayed by the display panel, a lens driver configured to drive the lens panel, a lens controller configured to control the lens driver, and a timing controller configured to control the data driver, the gate driver, and the lens driver in response to an image signal and a control signal. The lens controller and the timing controller are mounted on the same control board.
    Type: Grant
    Filed: June 9, 2014
    Date of Patent: July 12, 2016
    Assignees: SAMSUNG DISPLAY CO., LTD., SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sung Woo Lee, Il-Joo Kim, Jae-Hyun Park, Dong-Ki Lee, Jeesu Park
  • Publication number: 20160195997
    Abstract: Embodiments of the present invention generally relate to a touch sensible organic light emitting device. The organic light emitting device according to an exemplary embodiment of the present invention comprises: a substrate; a thin film transistor disposed on the substrate; an organic light emitting element connected to the thin film transistor and receiving a data voltage; a plurality of encapsulation thin films disposed on the organic light emitting element, and encapsulating the thin film transistor and the organic light emitting element; a planarization layer disposed on the encapsulation thin film; and a touch sensor disposed on the planarization layer.
    Type: Application
    Filed: March 15, 2016
    Publication date: July 7, 2016
    Inventors: Dong-Ki LEE, Hoon-Kee MIN
  • Publication number: 20160172120
    Abstract: Disclosed is an energy storage device based on metal oxide nanocrystals resealed through lithiation, and a supercapacitor using the same. The energy storage device is fabricated by dispersing transition metal nanoparticles over a carbon-based support with a large specific surface area, and then, dispersing and resealing the nanoparticles over the support using lithium ions with strong reductive ability, so that the resealed metal particles are substantially particles dispersed and resealed over the support as particles having a size of less than 1 nanometer on the scale of atomic units. The supercapacitor is fabricated using the energy storage device. The energy storage device higher capacitance than before resealing of metal oxide. Since the resealed metal particles are those having a size of less than 1 nanometer on the scale of atomic units, interference between particles disappears to exhibit excellent cycle life characteristics of 100% maintained performance in even more than 100,000 cycles.
    Type: Application
    Filed: June 29, 2015
    Publication date: June 16, 2016
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeung-Ku KANG, Kyung-Min CHOI, Dong-Ki LEE, Il Woo OCK, Jung-Hyo PARK, Hyung-Mo JEONG
  • Patent number: 9293265
    Abstract: Disclosed is a technique for fabricating a bio-photovoltaic cell which includes coupling graminoids extracted from natural grasses to a semiconductor electron acceptor, on which plasmonic silver nanoparticles are aligned, by using an organic ligand material. More particularly, disclosed is a technique for fabricating a new renewable energy generation device useable for fabrication of high efficiency bio-photovoltaic cells by improving a photo-electron generation rate of graminoids through a surface plasmon effect of silver nanoparticles and increasing an effective photo-electron amount transferred to the electron acceptor due to optimized bonding between a photo sensitizer and an electron acceptor.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: March 22, 2016
    Assignee: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeung Ku Kang, Gede Widia Pratama Adhyaksa, Dong Ki Lee, Il Woo Ock
  • Patent number: 9292118
    Abstract: Embodiments of the present invention generally relate to a touch sensible organic light emitting device. The organic light emitting device according to an exemplary embodiment of the present invention comprises: a substrate; a thin film transistor disposed on the substrate; an organic light emitting element connected to the thin film transistor and receiving a data voltage; a plurality of encapsulation thin films disposed on the organic light emitting element, and encapsulating the thin film transistor and the organic light emitting element; a planarization layer disposed on the encapsulation thin film; and a touch sensor disposed on the planarization layer.
    Type: Grant
    Filed: April 10, 2009
    Date of Patent: March 22, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong-Ki Lee, Hoon-Kee Min
  • Publication number: 20160079005
    Abstract: Disclosed is a technique for fabricating a bio-photovoltaic cell which includes coupling graminoids extracted from natural grasses to a semiconductor electron acceptor, on which plasmonic silver nanoparticles are aligned, by using an organic ligand material.
    Type: Application
    Filed: December 9, 2014
    Publication date: March 17, 2016
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jeung Ku KANG, Gede Widia Pratama Adhyaksa, Dong Ki LEE, II Woo OCK
  • Patent number: 9260470
    Abstract: The present invention relates to a novel siRNA structure and the use thereof, and more particularly to a double-stranded siRNA molecule comprising an antisense strand and a sense strand, wherein the siRNA molecule has at least one single nucleotide bulge formed by introducing a single nucleotide into the antisense strand, particularly at position 2 from the 5? end, and to a method of using the same to silence a target gene. The siRNA molecule of the invention shows high target gene silencing efficiency while minimizing off-target effects caused by the antisense strand, and thus has improved target selectivity. Accordingly, the siRNA molecule of the invention can be substituted for conventional siRNA molecules and can be widely be used in siRNA-based gene silencing techniques, including gene therapy.
    Type: Grant
    Filed: November 4, 2010
    Date of Patent: February 16, 2016
    Assignee: SUNGKYUNKWAN UNIVERSITY FOUNDATION FOR CORPORATE COLLABORATION
    Inventors: Dong Ki Lee, Dua Pooja
  • Patent number: 9046952
    Abstract: A display device integrated with a touch screen panel. The display device includes a plurality of pixels formed on a substrate, color filter patterns on a surface of the display device, corresponding to the pixels and containing a conductive material, and a black matrix formed between the color filter patterns. Each of the color filter patterns is electrically connected to an adjacent one of the color filter patterns to be used as sense electrodes of a touch screen panel.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: June 2, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Gun-Shik Kim, Dong-Ki Lee
  • Publication number: 20150130781
    Abstract: A three-dimensional image display apparatus includes a display panel configured to display an image and including gate lines, data lines, and pixels connected to the gate lines and the data lines, a data driver configured to drive the data lines, a gate driver configured to drive the gate lines, a lens panel configured to refract light of the image displayed by the display panel, a lens driver configured to drive the lens panel, a lens controller configured to control the lens driver, and a timing controller configured to control the data driver, the gate driver, and the lens driver in response to an image signal and a control signal. The lens controller and the timing controller are mounted on the same control board.
    Type: Application
    Filed: June 9, 2014
    Publication date: May 14, 2015
    Inventors: Sung Woo LEE, Il-Joo KIM, Jae-Hyun PARK, Dong-Ki LEE, Jeesu PARK
  • Patent number: 8987164
    Abstract: A semiconductor of which a substance such as a semiconductor photocatalyst is uniformly coated on the surface thereof with a graphitic carbon film and a method of fabricating the same are disclosed. According to the inventive method, a graphitic carbon film having a thickness of 1 nm or less is uniformly formed on the surface of the semiconductor by performing hydrothermal synthesis and pyrolysis on glucose, so as to keep the original structure crystallinity of the semiconductor photocatalyst to be a support of the carbon film.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: March 24, 2015
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Jeung-Ku Kang, Dong-Ki Lee, Kyu-Sung Han, Weon-Ho Shin, Jung-Woo Lee, Jung-Hoon Choi, Kyung-Min Choi, Yeob Lee
  • Publication number: 20140249304
    Abstract: A long interfering dsRNA (liRNA) capable of inhibiting specific RNAi-mediated expression of target genes and promoting an immune reaction, and use thereof are provided. The long interfering dsRNA can be useful in inhibiting specific expression of target genes through an RNA-interfering reaction in a sequence-specific manner and inducing expression of interferon-? by stimulating a protein kinase R (PKR) path in a structure-dependent manner.
    Type: Application
    Filed: May 30, 2012
    Publication date: September 4, 2014
    Applicant: RESEARCH & BUSINESS FOUNDATION SUNGKYUNKWAN UNIVERSITY
    Inventors: Dong Ki Lee, Chan Il Chang
  • Patent number: 8716171
    Abstract: The present invention relates to preparation of porous gallium (III) oxide [Ga2O3] photocatalyst for production of hydrocarbons a porous gallium oxide photocatalyst for production of hydrocarbons, manufactured by the foregoing method, and a process of producing hydrocarbons using the porous gallium oxide photocatalyst for production of hydrocarbons, manufactured by the foregoing method.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: May 6, 2014
    Assignee: Korea Advanced Instititute of Science and Technology
    Inventors: Jeung-Ku Kang, Hang-Ah Park, Jung-Hoon Choi, Kyung-Min Choi, Dong-Ki Lee
  • Publication number: 20140021589
    Abstract: A semiconductor of which a substance such as a semiconductor photocatalyst is uniformly coated on the surface thereof with a graphitic carbon film and a method of fabricating the same are disclosed. According to the inventive method, a graphitic carbon film having a thickness of 1 nm or less is uniformly formed on the surface of the semiconductor by performing hydrothermal synthesis and pyrolysis on glucose, so as to keep the original structure crystallinity of the semiconductor photocatalyst to be a support of the carbon film.
    Type: Application
    Filed: December 7, 2012
    Publication date: January 23, 2014
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Jeung-Ku KANG, Dong-Ki LEE, Kyu-Sung HAN, Weon-Ho SHIN, Jung-Woo LEE, Jung-Hoon CHOI, Kyung-Min CHOI, Yeob LEE
  • Patent number: 8563711
    Abstract: The present invention relates to a nucleic acid aptamer which can specifically recognize and bind to pancreatic cancer cells or tissues. The nucleic acid aptamer can bind specifically only to pancreatic cancer cells or tissues without binding to normal pancreatic cancer tissue, and thus can be effectively used as a composition for diagnosing and treating pancreatic cancer. In addition, the nucleic acid aptamer can detect not only the terminal pancreatic cancer cell line Capan-1, but also the early pancreatic cancer cell line Panc-1, and thus can be used for early diagnosis of pancreatic cancer, thereby contributing to increasing the survival rate of pancreatic cancer patients.
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: October 22, 2013
    Assignee: Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Dong Ki Lee, Dua Pooja
  • Publication number: 20130273657
    Abstract: The present invention relates to an RNAi-inducing nucleic acid molecule having a new structure and the use thereof, and more particularly to a novel nucleic acid molecule having a structure comprising a first strand, which is 24-121 nt in length and comprises a region complementary to a target nucleic acid, and a second strand which is 13-21 nt in length and has a region that binds complementarily to the region of the first strand, which is complementary to the target nucleic acid, so that the nucleic acid molecule inhibits the expression of a target gene with increased efficiency, and to a method of inhibiting the expression of a target gene using the nucleic acid molecule. The nucleic acid molecule structure of the present invention increases the efficiency with which the nucleic acid molecule inhibits the target gene.
    Type: Application
    Filed: September 7, 2011
    Publication date: October 17, 2013
    Applicant: Sungkyunkwan University Foundation For Corporate Collaboration
    Inventor: Dong Ki Lee
  • Patent number: 8514211
    Abstract: A display panel includes a power line supplying power, and a plurality of pixels connected with the power line, each pixel including a plurality of sub-pixel regions, and receiving the power to display an image. Each of the pixels further includes a plurality of driving thin film transistors and a plurality of light emitting units. Each of the driving thin film transistors are positioned in respective sub-pixel regions to receive the power to output driving signals. Each of the light emitting units are connected to respective driving thin film transistors, have relatively longer lengths in a first direction, and have the same width in a second direction substantially perpendicular to the first direction. One among the plurality of light emitting units is longer than the remaining light emitting units to thereby improve a light emitting efficiency and image display quality of a display panel.
    Type: Grant
    Filed: April 17, 2009
    Date of Patent: August 20, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Hyuk Choi, Chun-Gi You, Jong-Hyun Park, Doo-Hyun Woo, Dong-Ki Lee, Young-Dong Kwon, Jin-Hee Kang
  • Patent number: 8513884
    Abstract: A flat panel display apparatus includes a substrate; a display unit which is formed on the substrate and displays an image; a metal sheet which faces towards the substrate; a sealant which fills the entire free space between the substrate and the metal sheet and seals the space between the substrate and the metal sheet; and a polymer layer which is disposed on a surface of the metal sheet and has a lower thermal expansion coefficient than the metal sheet. An organic light-emitting display (OLED) apparatus including a sealant which fills an entire space between a substrate and a metal sheet is also disclosed.
    Type: Grant
    Filed: December 22, 2010
    Date of Patent: August 20, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kie-Hyun Nam, Hoon Kim, Dong-Ki Lee, Jin-Wook Seong, Hong Chen, Jung-Mi Choi, Ji-Sil Lee