Patents by Inventor Chul Woong Joo

Chul Woong Joo 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: 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
  • 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
  • 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
  • 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
  • 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
  • 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
  • Patent number: 8685768
    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: June 12, 2012
    Date of Patent: April 1, 2014
    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
  • Publication number: 20140027727
    Abstract: Disclosed are organic light emitting devices and methods of fabricating the same. The organic light emitting device may include light scattering parts having irregular island-shapes irregularly arranged. The organic light emitting device may further include a planarization layer, a first electrode, an organic light emitting layer, a second electrode, and an encapsulation layer. The light scattering parts may be formed using an organic solution having a low refractive index to improve light extraction efficiency of the organic light emitting device. Additionally, the light scattering parts of the irregular island-shapes may improve the light extraction efficiency of lights of all wavelengths, so as to be applied to an organic white light emitting device. The light scattering parts of the irregular island-shapes may be formed using the organic solution by a dewetting phenomenon. The light scattering parts may be formed at a temperature of about 250 degrees Celsius or less.
    Type: Application
    Filed: January 22, 2013
    Publication date: January 30, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Bong Joon LEE, Doo-Hee Cho, Jaehyun Moon, Seung Koo Park, Jeong Ik Lee, Hye Yong Chu, Jin Wook Shin, Nam Sung Cho, Jin Woo Huh, Joon Tae Ahn, Jun-Han Han, Chul Woong Joo, Joo Hyun Hwang
  • Publication number: 20140029267
    Abstract: Provided are a random wrinkle structure-formable compound, a composition including the same, a film including a random wrinkle structure, a method of forming the film, and an organic light emitting device including the film. A compound according to the present invention is coated and then, a film having a surface structure of random wrinkles may be simply formed through simple ultraviolet (UV) curing or thermosetting. When the film thus formed is used in an organic light emitting device, light generated from the organic light emitting device is scattered on surfaces of the random wrinkles to prevent light guide or total reflection, and thus, light is extracted to the outside. That is, a random structure disposed at the outside of the device performs a light extraction function and consequently, light efficiency of the organic light emitting device may be increased.
    Type: Application
    Filed: February 28, 2013
    Publication date: January 30, 2014
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jaehyun MOON, Seung Koo Park, Jeong Ik Lee, Jin Wook Shin, Doo-Hee Cho, Joo Hyun Hwang, Chul Woong Joo, Jun-Han Han, Jin Woo Huh, Joon Tae Ahn, Nam Sung Cho, Hye Yong Chu, Byoung Gon Yu
  • Publication number: 20130156960
    Abstract: Provided are organic-inorganic hybrid polyamic ester, method of fabricating the same, and method of fabricating a film thereof. The polyamic ester is formed by chemically reacting an inorganic precursor containing inorganic and/or metal element with a polyamic acid having two carboxyl acid of good reactivity per a polymer repeating unit. The inorganic alkoxide is hydrolyzed to be the corresponding inorganic hydroxide. The hydroxyl group is reacted with the carboxylic acid of the polyamic acid and with the hydroxyl group of the other inorganic hydroxide. Therefore, the polyamic ester can steadily include more inorganic materials. The content amount of the inorganic material is relatively high, so that the polyamic ester may have superior refractive index, chemical and heat resistances.
    Type: Application
    Filed: September 14, 2012
    Publication date: June 20, 2013
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Koo PARK, Jeong Ik LEE, Doo-Hee CHO, Hye Yong CHU, Chul Woong JOO
  • Publication number: 20130149803
    Abstract: Provided is a method of fabricating an organic light emitting diode. The method may include preparing a substrate, forming a textured portion on the substrate, the textured portion including protruding patterns randomly and irregularly arranged on the substrate, forming a planarization layer on the substrate to planarize the substrate formed with the textured portion, forming a first electrode on the planarization layer, forming an organic light emitting layer on the first electrode, and forming a second electrode on the organic light emitting layer.
    Type: Application
    Filed: September 7, 2012
    Publication date: June 13, 2013
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaehyun MOON, Jeong Ik Lee, Doo-Hee Cho, Seung Koo Park, Hye Yong Chu, Joo Hyun Hwang, Jin Wook Shin, Jun-Han Han, Chul Woong Joo, Jin Woo Huh, Byoung Gon Yu
  • Publication number: 20130056711
    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: June 12, 2012
    Publication date: March 7, 2013
    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
  • Publication number: 20130049046
    Abstract: The inventive concept provides an organic light emitting diode that can change its color. A color change is embodied by a micro cavity effect caused by a metal thin film partly formed on a positive pole. The organic light emitting diode includes a positive pole, an organic luminous layer and a negative pole that can be sequentially stacked on a substrate, and further include a metal thin film layer having first strip lines extending in a first direction and being arranged in a second direction crossing the first direction on the positive pole.
    Type: Application
    Filed: July 24, 2012
    Publication date: February 28, 2013
    Applicant: ELECTRONICS AND TELECOMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaehyun MOON, Hye Yong CHU, Jeong Ik LEE, Doo-Hee CHO, Jin Wook SHIN, Jun-Han HAN, Jin Woo HUH, Joo Hyun HWANG, Chul Woong JOO, Byoung Gon YU
  • Publication number: 20130032840
    Abstract: Organic light emitting devices are provided. The organic light emitting device may include a substrate having a first refractive index, a first electrode on the substrate, a second electrode disposed between the substrate and the first electrode and having a thickness equal to or greater than one-hundredth of a minimum wavelength of visible light and equal to or smaller than five-hundredths of a maximum wavelength of the visible light, and an organic light emitting layer disposed between the first and second electrodes and having a second refractive index.
    Type: Application
    Filed: May 30, 2012
    Publication date: February 7, 2013
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Doo-Hee CHO, Hey Yong Chu, Jeong Ik Lee, Jaehyun Moon, Jin Wook Shin, Jun-Han Han, Jin Woo Huh, Joo Hyun Hwang, Chul Woong Joo
  • Publication number: 20130026521
    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: May 23, 2012
    Publication date: January 31, 2013
    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