Patents by Inventor Joo Hyun Hwang

Joo Hyun Hwang 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: 9857656
    Abstract: Provided are an electrode plate using an ITO, and an electrochromic plate, an electrochromic mirror and a display device using the electrode plate, the electrode plate including a transparent electrode layer, a metal mesh pattern on the transparent electrode layer, an insulating layer provided in a space defined by an upper surface of the transparent electrode layer and the metal mesh pattern and between metal components of the metal mesh pattern, and a base substrate on the metal mesh pattern and the insulating layer.
    Type: Grant
    Filed: July 31, 2014
    Date of Patent: January 2, 2018
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Young Dae Seo, Hyo Won Son, Joo Hyun Hwang
  • Patent number: 9678250
    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: Grant
    Filed: March 14, 2014
    Date of Patent: June 13, 2017
    Assignee: 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
  • Patent number: 9605347
    Abstract: Provided is a method of forming a film having a surface structure of a random wrinkles. 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: Grant
    Filed: February 9, 2016
    Date of Patent: March 28, 2017
    Assignee: 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: 20160168712
    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 9, 2016
    Publication date: June 16, 2016
    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
  • Patent number: 9356261
    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: January 30, 2015
    Date of Patent: May 31, 2016
    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
  • Patent number: 9349992
    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: Grant
    Filed: September 21, 2015
    Date of Patent: May 24, 2016
    Assignees: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, UNITEX CO., LTD
    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
  • Publication number: 20160013448
    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 21, 2015
    Publication date: January 14, 2016
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, UNITEX Co., LTD
    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: 9147856
    Abstract: An organic light emitting device is provided that includes a substrate; an embossing layer provided on the substrate; a planarization layer provided on the embossing layer; a first electrode provided on the planarization layer; an organic light emitting layer provided on the first electrode; and a second electrode provided on the organic light emitting layer. The planarization layer may include a first planarization layer provided on the embossing layer; and a second planarization layer provided on the first planarization layer. The embossing layer may have a refractive index ranging from about 1.3 to about 1.5. The planarization layer may include a first planarization layer having a surface roughness of about 10 nm to about 50 nm and a refractive index that ranges from about 1.8 to about 2.5; and a second planarization layer provided on the first planarization layer and having a surface roughness of less than about 10 nm.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: September 29, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Doo-Hee Cho, Jin Wook Shin, Jeong Ik Lee, Hye Yong Chu, Jun-Han Han, Joo Hyun Hwang, Seung Koo Park, Jaehyun Moon, Nam Sung Cho, Jin Woo Huh, Chul Woong Joo
  • Publication number: 20150200382
    Abstract: Provided is an organic light-emitting diode (OLED) including: a substrate; a wide viewing-angle homogenization layer on the substrate; a first electrode layer on the wide viewing-angle homogenization layer; a hole transport layer on the first electrode layer; an organic emission layer disposed on the hole transport layer to emit a light; an electron transport layer on the organic emission layer; and a second electrode layer on the electron transport layer.
    Type: Application
    Filed: August 5, 2014
    Publication date: July 16, 2015
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jaehyun MOON, Seung Koo PARK, Doo-Hee CHO, Jonghee LEE, Jin Woo HUH, Jin Wook SHIN, Jun-Han HAN, Joo Hyun HWANG, Chul Woong JOO, Nam Sung CHO, Jong Tae LIM, Byoung Gon YU, Jeong Ik LEE
  • Patent number: 9040963
    Abstract: Provided is an organic light emitting device. The organic light emitting device comprising a first light emitting part on a substrate, emitting a first light of a first wavelength, wherein the first light emitting part includes a transparent first electrode, a first organic light emitting layer, and a transparent second electrode sequentially stacked on the substrate, a second light emitting part on the first light emitting part, emitting a second light of a second wavelength, wherein the second light emitting part includes a transparent third electrode, a second organic light emitting layer, and a reflective fourth electrode sequentially stacked on the first light emitting part, and a fluorescent material disposed at least one between the substrate and the first light emitting part, and between the first light emitting part and second light emitting part.
    Type: Grant
    Filed: December 3, 2012
    Date of Patent: May 26, 2015
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jeong Ik Lee, Chul Woong Joo, Jun-Han Han, Joo Hyun Hwang, Nam Sung Cho, Jin Woo Huh, Jaehyun Moon, Seung Koo Park, Jin Wook Shin, Doo-Hee Cho, Hye Yong Chu
  • 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
  • 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
  • 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
  • Publication number: 20150077361
    Abstract: Provided are an electrode plate using an ITO, and an electrochromic plate, an electrochromic mirror and a display device using the electrode plate, the electrode plate including a transparent electrode layer, a metal mesh pattern on the transparent electrode layer, an insulating layer provided in a space defined by an upper surface of the transparent electrode layer and the metal mesh pattern and between metal components of the metal mesh pattern, and a base substrate on the metal mesh pattern and the insulating layer.
    Type: Application
    Filed: July 31, 2014
    Publication date: March 19, 2015
    Inventors: Young Dae SEO, Hyo Won SON, Joo Hyun HWANG
  • 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
  • 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
  • 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
  • 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