Patents by Inventor Jeong Ik Lee

Jeong Ik 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).

  • LIGHT EMITTING DEVICE WITH LIGHT PATH CHANGING STRUCTURE
    Publication number: 20150140708
    Abstract: The inventive concept provides light emitting devices and methods of manufacturing a light emitting device. The light emitting device may include a transparent substrate including a first region and a second region, a first transparent electrode disposed on a first surface of the transparent substrate, a second transparent electrode facing and spaced apart from the first transparent electrode, an organic light emitting layer disposed between the first and second transparent electrodes, an assistant electrode disposed between the first and second transparent electrodes and selectively masking the second region, and a light path changing structure disposed on a second surface of the transparent substrate and selectively masking the second region.
    Type: Application
    Filed: January 30, 2015
    Publication date: May 21, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jeong Ik LEE, Jin Woo Huh, Hye Yong CHU, Doo-Hee CHO, Jun-Han HAN, Jin Wook SHIN, Jaehyun MOON, Joo Hyun HWANG, Chul Woong JOO
  • CELL CULTURE FLUID
    Publication number: 20150099301
    Abstract: The present invention relates to a cell culture medium and more particularly, to a safe, stable, and effective cell culture medium for cell therapy products.
    Type: Application
    Filed: February 28, 2013
    Publication date: April 9, 2015
    Inventors: Jeong Ik Lee, Soo Jung Lee, Kyung Mi Lee
  • Organic light emitting diodes and methods of manufacturing the same
    Patent number: 8994059
    Abstract: The inventive concept provides organic light emitting diodes and methods of manufacturing an organic light emitting diode. The organic light emitting diode includes a substrate, a first electrode layer and a second electrode layer formed on the substrate, an organic light emitting layer disposed between the first electrode layer and the second electrode layer and generating light, and a scattering layer between the first electrode layer and the substrate or between the first electrode layer and the organic light emitting layer. The scattering layer scatters the light.
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: March 31, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jin Woo Huh, Jeong Ik Lee, Chul Woong Joo, Doo-Hee Cho, Jin Wook Shin, Jaehyun Moon, Jun-Han Han, Joo Hyun Hwang, Hye Yong Chu, Byoung Gon Yu
  • METHOD OF FABRICATING LIGHT FUNCTIONAL SUBSTRATE AND ORGANIC LIGHT EMITTING DIODE HAVING THE SAME
    Publication number: 20150086761
    Abstract: Provided is a method of fabricating a light functional substrate. The method includes applying particles onto a surface of water contained in a container to form a monolayer constituted by the particles, immersing a substrate into the container, drawing the substrate out of the container to form patterns constituted by the particles on the substrate in a first direction, and forming a planarization film covering the patterns on the substrate.
    Type: Application
    Filed: March 14, 2014
    Publication date: March 26, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jaehyun MOON, Seung Koo PARK, Doo-Hee CHO, Jin Wook SHIN, Jun-Han HAN, Jonghee LEE, Joo Hyun HWANG, Chul Woong JOO, Jin Woo HUH, Nam Sung CHO, Jong Tae LIM, Jeong Ik LEE, Byoung Gon YU
  • Dual mode display devices and methods of manufacturing the same
    Patent number: 8987718
    Abstract: Disclosed are dual mode display devices and methods of manufacturing the same. The dual mode display device may include a first substrate, a first electrode on the first substrate, a second substrate opposite to the first electrode and the first substrate, a second electrode between the second substrate and the first electrode, a third electrode between the first electrode and the second electrode, an optic switching layer between the first electrode and the third electrode, and an organic light-emitting layer between the second electrode and the third electrode.
    Type: Grant
    Filed: February 8, 2013
    Date of Patent: March 24, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae Bon Koo, Hojun Ryu, Chi-Sun Hwang, Jeong Ik Lee, Hye Yong Chu
  • Light emitting device with light path changing structure
    Patent number: 8975649
    Abstract: The inventive concept provides light emitting devices and methods of manufacturing a light emitting device. The light emitting device may include a transparent substrate including a first region and a second region, a first transparent electrode disposed on a first surface of the transparent substrate, a second transparent electrode facing and spaced apart from the first transparent electrode, an organic light emitting layer disposed between the first and second transparent electrodes, an assistant electrode disposed between the first and second transparent electrodes and selectively masking the second region, and a light path changing structure disposed on a second surface of the transparent substrate and selectively masking the second region.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: March 10, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jeong Ik Lee, Jin Woo Huh, Hye Yong Chu, Doo-Hee Cho, Jun-Han Han, Jin Wook Shin, Jaehyun Moon, Joo Hyun Hwang, Chul Woong Joo
  • ORGANIC LIGHT-EMITTING DIODE AND METHOD OF FABRICATING THE SAME
    Publication number: 20150041771
    Abstract: Provided is a method of manufacturing an organic light-emitting diode including forming an anode on a substrate, forming an organic light-emitting layer on the anode, forming a cathode on the organic light-emitting layer, and forming a light scattering film on the cathode. The light scattering film is a polycrystalline dielectric material composed of anisotropic crystals, and a surface roughness Ra of a top surface of the light scattering film is greater than or equal to about 50 nm by an anisotropic crystal growth of particles of the dielectric material.
    Type: Application
    Filed: April 2, 2014
    Publication date: February 12, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Doo-Hee CHO, Jeong Ik LEE, Jin Wook SHIN, Jin Woo HUH, Nam Sung CHO, Jonghee LEE, Seung Koo PARK, Jaehyun MOON
  • METAL OXIDE SOLUTION IN ORGANIC SOLVENT FOR FABRICATING HIGH REFRACTIVE FILM, METHOD OF PREPARING THE SAME AND METHOD OF FABRICATING HIGH REFRACTIVE FILM USING THE SAME
    Publication number: 20150044381
    Abstract: Provided are a metal oxide solution in organic solvent for a high refractive film, a method of preparing the same, and a method of fabricating a high refractive film using the same. The method of preparing the metal oxide solution in organic solvent for fabricating a high refractive film includes preparing a metal oxide precursor, preparing an organic solvent containing a carbonyl group, forming a metal oxide through a sol-gel reaction of the metal oxide precursor in the organic solvent in the presence of an acidic catalyst, and reacting the metal oxide and the organic solvent. The hydrogen bonding between the metal oxide and the organic solvent occurs.
    Type: Application
    Filed: July 17, 2014
    Publication date: February 12, 2015
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seung Koo PARK, Jeong Ik LEE, Byoung Kuk KANG, Doo-Hee CHO, Jaehyun MOON, Jin Wook SHIN, Hye Yong CHU
  • METHOD OF MANUFACTURING ORGANIC LIGHT EMITTING DIODE
    Publication number: 20150011031
    Abstract: Provided is a method of manufacturing an organic light emitting diode. The method of manufacturing an organic light emitting diode includes forming a light scattering layer on a substrate, forming a metal mask layer on the light scattering layer, forming a metal mask pattern by performing a heat treatment process on the metal mask layer, forming a nano structure by pattering the light scattering layer by using the metal mask pattern as an etching mask, and forming a planarizing layer to cover the nano structure on the substrate, wherein the heat treatment process is performed at temperature of about 80° C. to about 200° C.
    Type: Application
    Filed: May 7, 2014
    Publication date: January 8, 2015
    Applicant: Electronics and Telecomunications Research Institute
    Inventors: Doo-Hee CHO, Jin Wook SHIN, Jeong Ik LEE, Hye Yong CHU, Jonghee LEE, Jaehyun MOON, Seung Koo PARK
  • ELECTRONIC DEVICE AND METHOD OF FABRICATING THE SAME
    Publication number: 20150008401
    Abstract: Provided are an electronic device and a fabrication method thereof. The electronic device according to the concept of the present invention includes auxiliary interconnections disposed on a substrate, a light extraction layer that is provided on the substrate and fills between the auxiliary interconnection, and a first electrode provided on the auxiliary interconnections and the light extraction layer, wherein the light extraction layer may have a first surface facing the substrate and a second surface opposite to the first surface, the first surface may have protrusions, and the auxiliary interconnections may include a material having a lower resistance than the first electrode. Since electrical properties of the electronic device are improved, uniform light emission characteristics may be realized.
    Type: Application
    Filed: May 5, 2014
    Publication date: January 8, 2015
    Applicants: Electronics and Telecommunications Research Institute, Korea Electrotechnology Research Institute, Korea Institute of Machinery & Materials
    Inventors: Jeong Ik LEE, Jonghee LEE, Doo-Hee CHO, Jun-Han HAN, Geon-Woong LEE, Joong-Tak HAN, Do-Geun KIM, Sunghoon JUNG
  • Dual-mode pixel including emissive and reflective devices and dual-mode display with the same
    Patent number: 8901548
    Abstract: Provided is a dual-mode display including a substrate, and a plurality of sub pixels on the substrate. Each of the sub pixels may include an emissive device, a reflective optical filter provided on a surface of the emissive device, and an optical shutter provided on other surface of the emissive device.
    Type: Grant
    Filed: June 18, 2013
    Date of Patent: December 2, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Joon Tae Ahn, Jeong Ik Lee, Jaehyun Moon, Seung Koo Park, Nam Sung Cho, Doo-Hee Cho, Jun-Han Han, Joo Hyun Hwang, Jin Wook Shin, Jong Tae Lim, Chul Woong Joo, Jin Woo Huh, Chi-Sun Hwang, Hojun Ryu, Jae Bon Koo, Hye Yong Chu
  • HYBRID DISPLAY DEVICE AND DISPLAYING METHOD THEREOF
    Publication number: 20140340420
    Abstract: Provided is a display device including a pixel array configured to include a reflective pixel unit including one or more reflective sub pixels and an emissive pixel unit including one or more emissive sub pixels, wherein the reflective pixel unit and the emissive pixel unit are combined to allow the reflective sub pixel and the emissive sub pixel to be included in one coordinate; an image determination circuit configured to generate a determination signal according to a characteristic of an image; a gate driver configured to generate a gating signal for activating at least one of the reflective sub pixel and the emissive sub pixel in one coordinate based on to the generated determination signal; and a data driver configured to provide a driving signal to the pixel array by referring to image data and the generated gating signal.
    Type: Application
    Filed: February 28, 2014
    Publication date: November 20, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jun-Han HAN, Jeong Ik LEE, Hye Yong CHU, Jonghee LEE, Jong Tae LIM
  • PHOSPHORESCENT HOST MATERIAL AND ORGANIC LIGHT-EMITTING DEVICE INCLUDING THE SAME
    Publication number: 20140332777
    Abstract: Provided are a phosphorescent host material and an organic light-emitting device including the same. An emission material layer according to the inventive concept includes the phosphorescent host material and a phosphorescent dopant material. The phosphorescent host material has higher triplet energy than the phosphorescent dopant material. Thus, the light-emitting efficiency of the organic light-emitting device may be improved.
    Type: Application
    Filed: April 23, 2014
    Publication date: November 13, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Nam Sung CHO, Joo Hyun HWANG, Jeong Ik LEE
  • Method of manufacturing organic-light-emitting-diode flat-panel light-source apparatus
    Patent number: 8871563
    Abstract: A method of manufacturing an organic-light-emitting-diode (OLED) flat-panel light-source apparatus. The method includes depositing a metal layer on a substrate and patterning the metal layer to form a plurality of subsidiary electrodes, forming an insulating layer on the substrate including the plurality of subsidiary electrodes and forming a first subsidiary electrode layer by etching the insulating layer until some of the plurality of subsidiary electrodes are exposed, and sequentially forming an anode, an organic emission layer (EML), and a cathode on the substrate on which the first subsidiary electrode layer is formed.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: October 28, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jun Han Han, Hye Yong Chu, Jeong Ik Lee, Doo Hee Cho, Jong Hee Lee, Joo Won Lee, Jin Wook Shin
  • Hybrid light emitting device having a capping layer
    Patent number: 8860050
    Abstract: Provided is a hybrid light emitting device. The hybrid light emitting device may include the first light emitting part on the substrate, the capping layer, and the second light emitting part. The first light emitting part may emit light having a first wavelength, and the first light emitting part may include a first electrode, an organic emitting layer, and a second electrode sequentially disposed. A second light emitting part may generate light having a second wavelength. A capping layer may be disposed between the organic emitting layer and the second light emitting part. The capping layer may reflect light having the first wavelength and transmit light having the second wavelength.
    Type: Grant
    Filed: March 1, 2013
    Date of Patent: October 14, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jun-Han Han, Jeong Ik Lee, Chul Woong Joo, Jin Woo Huh, Jaehyun Moon, Seung Koo Park, Joon Tae Ahn, Boong Joon Lee, Nam Sung Cho, Doo-Hee Cho, Joo Hyun Hwang, Jin Wook Shin, Hye Yong Chu
  • Method of fabricating organic light emitting device
    Patent number: 8828760
    Abstract: Provided is a method of fabricating an organic light emitting device that may form a light scattering layer having an irregular random structure at a low temperature. The method includes providing a substrate coated with a precursor layer; sequentially forming a metal layer and an organic layer on the precursor layer; performing a heat treatment of the organic layer to form an organic mask from the organic layer; patterning the metal layer by using the organic mask to form a metal mask; patterning the precursor layer by using the metal mask to form a light scattering layer having an irregular random structure; removing the metal mask and the organic mask; and sequentially stacking a planarization layer, a first electrode, an organic light emitting layer, a second electrode, and a passivation layer on the light scattering layer.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: September 9, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Bong Joon Lee, Doo-Hee Cho, Jaehyun Moon, Jeong Ik Lee, Hye Yong Chu, Seung Koo Park, Jin Wook Shin, Jin Woo Huh, Nam Sung Cho, Joon Tae Ahn, Jun-Han Han, Chul Woong Joo, Joo Hyun Hwang
  • Light source apparatus
    Patent number: 8816584
    Abstract: Provided is a light source apparatus which include a light emitting unit including a light emitting area of unit of surface, an antenna disposed along the outer periphery so as not to encroach on a light emitting area and a driving unit, and a driving unit processing wireless power received from the antenna and supplying the processed wireless power to the light emitting unit. According to the light source apparatus, miniaturization may be accomplished and a shielding phenomenon of an antenna reception signal caused by the light emitting area may be suppressed.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: August 26, 2014
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jun-Han Han, Jeong Ik Lee, Yong Hae Kim, Myung Lae Lee, Sang Hoon Cheon, Jaehyun Moon, Seung Koo Park, Doo-Hee Cho, Joo Hyun Hwang, Jin Wook Shin, Chul Woong Joo, Jin Woo Huh, Hye Yong Chu
  • ORGANIC LIGHT EMITTING DIODES AND METHODS OF MANUFACTURING THE SAME
    Publication number: 20140167022
    Abstract: The inventive concept provides organic light emitting diodes and methods of manufacturing an organic light emitting diode. The organic light emitting diode includes a substrate, a first electrode layer and a second electrode layer formed on the substrate, an organic light emitting layer disposed between the first electrode layer and the second electrode layer and generating light, and a scattering layer between the first electrode layer and the substrate or between the first electrode layer and the organic light emitting layer. The scattering layer scatters the light.
    Type: Application
    Filed: February 19, 2014
    Publication date: June 19, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jin Woo HUH, Jeong Ik LEE, Chul Woong JOO, Doo-Hee CHO, Jin Wook SHIN, Jaehyun MOON, Jun-Han HAN, Joo Hyun HWANG, Hye Yong CHU, Byoung Gon YU
  • DUAL-MODE PIXEL INCLUDING EMISSIVE AND REFLECTIVE DEVICES AND DUAL-MODE DISPLAY WITH THE SAME
    Publication number: 20140158997
    Abstract: Provided is a dual-mode display including a substrate, and a plurality of sub pixels on the substrate. Each of the sub pixels may include an emissive device, a reflective optical filter provided on a surface of the emissive device, and an optical shutter provided on other surface of the emissive device.
    Type: Application
    Filed: June 18, 2013
    Publication date: June 12, 2014
    Inventors: Joon Tae Ahn, Jeong Ik Lee, Jaehyun Moon, Seung Koo Park, Nam Sung Cho, Doo-Hee Cho, Jun-Han Han, Joo Hyun Hwang, Jin Wook Shin, Jong Tae Lim, Chul Woong Joo, Jin Woo Huh, Chi-Sun Hwang, Hojun Ryu, Jae Bon Koo, Hye Yong Chu
  • METHODS OF FORMING AN ORGANIC SCATTERING LAYER, AN ORGANIC LIGHT EMITTING DIODE WITH THE SCATTERING LAYER, AND A METHOD OF FABRICATING THE ORGANIC LIGHT EMITTING DIODE
    Publication number: 20140145160
    Abstract: Provided is a method of fabricating an organic scattering layer. The method may include providing a deposition apparatus with a reaction chamber and a source chamber, loading a substrate in the reaction chamber, supplying carrier gas into the source chamber that may be configured to supply an evaporated organic source material into the reaction chamber, a temperature of the carrier gas ranging from 25° C. to 50° C., and spraying the carrier gas and the evaporated organic source material into the reaction chamber through a showerhead to deposit an organic scattering layer on the substrate, the organic scattering layer including organic particles, which may be provided in a molecularized form of the evaporated organic source material, and thereby having an uneven surface.
    Type: Application
    Filed: September 6, 2013
    Publication date: May 29, 2014
    Applicants: UNITEX Co., LTD, Electronics and Telecommunications Research Institute
    Inventors: Nam Sung Cho, Jeong Ik Lee, Joo Hyun Hwang, Chul Woong Joo, Jun-Han Han, Seung Koo Park, Jaehyun Moon, Doo-Hee Cho, Jin Wook Shin, Hye Yong Chu, Seongdeok Ahn, Jin Woo Huh, Myung Gi Lee, Kyung Soo Suh, Byoung Gon Yu