Patents by Inventor Chi-Sun Hwang

Chi-Sun 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).

  • Publication number: 20200379313
    Abstract: Provided is an optoelectronic element including a first substrate, a first electrode on the first substrate, a first lens pattern disposed on the first electrode and including a liquid crystal and a black dye molecule, a second lens pattern disposed on the first lens pattern, and a second electrode on the second lens pattern, wherein the black dye molecule includes about 1 to 4 azo groups and about 2 to 5 aromatic cyclic compounds.
    Type: Application
    Filed: August 19, 2020
    Publication date: December 3, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Gi Heon KIM, Yong Hae KIM, Chi-Sun HWANG
  • Patent number: 10825932
    Abstract: Provided is a thin film transistor including a substrate, a first spacer on the substrate, a second spacer on the first spacer, a light shield layer intervened between the first spacer and the second spacer, a semiconductor layer on the second spacer, and a gate electrode on the semiconductor layer, wherein the light shield layer includes a plurality of inclined surfaces against a top surface of the substrate.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: November 3, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Jae-Eun Pi, Seung Youl Kang, Jaehyun Moon, Seongdeok Ahn, Jongchan Lee, Chul Woong Joo, Chi-Sun Hwang
  • Publication number: 20200321403
    Abstract: Provided is a pressure sensitive display device including a sensing substrate, a reaction substrate provided on the sensing substrate, and spacers provided between the sensing substrate and the reaction substrate to space the sensing substrate apart from the reaction substrate. Here, the sensing substrate includes a flexible substrate and a touch electrode provided on one surface of the flexible substrate, which faces the reaction substrate. The reaction substrate includes a transparent substrate, a transparent electrode provided on one surface of the transparent substrate, which faces the sensing substrate, and a light emitting layer disposed on the transparent electrode.
    Type: Application
    Filed: April 7, 2020
    Publication date: October 8, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Ji-Young OH, Seung Youl KANG, Seongdeok AHN, Jeong Ik LEE, Chi-Sun HWANG, Byoung-Hwa KWON, Tae-Youb KIM, Jeho NA, Sooji NAM, Jaehyun MOON, Young Sam PARK, Chan Woo PARK, Doo-Hee CHO, Chul Woong JOO, Jae-Eun PI
  • Patent number: 10782588
    Abstract: Provided is an optoelectronic element including a first substrate, a first electrode on the first substrate, a first lens pattern disposed on the first electrode and including a liquid crystal and a black dye molecule, a second lens pattern disposed on the first lens pattern, and a second electrode on the second lens pattern, wherein the black dye molecule includes about 1 to 4 azo groups and about 2 to 5 aromatic cyclic compounds.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: September 22, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Gi Heon Kim, Yong Hae Kim, Chi-Sun Hwang
  • Patent number: 10741777
    Abstract: Provided is a stretchable display including an elastic body, a light emitting unit on the elastic body, and a wiring unit on the elastic body, wherein the light emitting unit includes a first substrate unit on the elastic body, a buffer layer on the first substrate unit, and a light emitting element on the buffer layer, the wiring unit includes a second substrate unit on the elastic body, a driving element configured to control the light emitting element, a wiring configured to electrically connect the driving element and the light emitting element, and an insulation layer configured to cover the driving element and the wiring, the light emitting unit and the wiring unit have respective corrugation structures, a thickness of the light emitting unit is larger than that of the wiring unit, a modulus of elasticity of the buffer layer is larger than that of the insulation layer, and a modulus of elasticity of the elastic body is smaller than that of the insulation layer.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: August 11, 2020
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Chi-Sun Hwang, Seung Youl Kang, Byoung-Hwa Kwon, Gi Heon Kim, Seong Hyun Kim, Jaehyun Moon, Young Sam Park, Seongdeok Ahn, Jeong Ik Lee, Sung Haeng Cho
  • Publication number: 20200144410
    Abstract: Provided is a thin film transistor. The thin film transistor includes a substrate, a channel part extending on the substrate in a first direction parallel to an upper surface of the substrate, source/drain electrodes connected to both ends of the channel part in the first direction, and a gate electrode spaced apart from the channel part in a second direction intersecting the first direction and parallel to the upper surface of the substrate. Each of the channel part, the source/drain electrodes, and the gate electrode is provided as a single layer.
    Type: Application
    Filed: November 4, 2019
    Publication date: May 7, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Himchan OH, Sun Jin YUN, Jeong Ik LEE, Chi-Sun HWANG
  • Patent number: 10598558
    Abstract: Provided is a pressure sensing element including a first electrode, a pressure sensing unit on the first electrode, a second electrode disposed on the pressure sensing unit and having first and second points on a top surface thereof, a first elastic member on the second electrode, and a second elastic member on the first elastic electrode, wherein a thickness of the first elastic member decreases from the first point toward the second point, and a thickness of the second elastic member increases from the second point toward the first point.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: March 24, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seong Hyun Kim, Su Jae Lee, Kyoung Ik Cho, Chi-Sun Hwang
  • Publication number: 20200081311
    Abstract: An electrochromic device according to the inventive concept includes a first electrode; a second electrode on the first electrode; and an electrochromic electrolyte layer and a nanostructure between the first and second electrodes. The nanostructure has a porous structure, and the electrochromic electrolyte layer includes phenothiazine or a compound represented by the following Formula 1: where R1 is hydrogen, C1-C6 alkyl or phenyl.
    Type: Application
    Filed: September 4, 2019
    Publication date: March 12, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Chil Seong AH, Hojun RYU, Juhee SONG, Tae-Youb KIM, Chi-Sun HWANG
  • Publication number: 20200072665
    Abstract: Provided is a pixel circuit.
    Type: Application
    Filed: August 27, 2019
    Publication date: March 5, 2020
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: CHUNWON BYUN, Young-deuk JEON, Chi-Sun HWANG, Chan-mo KANG, Yun-Jeong KIM, Hye Jin KIM, Seongdeok AHN, JEONG IK LEE, Seong Hyun KIM, Bock Soon NA
  • Publication number: 20190361277
    Abstract: A light emitting apparatus and a window. The light emitting apparatus includes a liquid crystal device that includes a support substrate, a first electrode, a liquid crystal layer, and a sacrificial structure, separating the sacrificial structure from the liquid crystal layer to expose one surface of the liquid crystal layer, and a second electrode on the one surface of the liquid crystal layer.
    Type: Application
    Filed: July 31, 2019
    Publication date: November 28, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Gi Heon KIM, Sujung Kim, Yong Hae Kim, Chi-Sun Hwang
  • Patent number: 10481461
    Abstract: Provided is a reversible electrochemical mirror including a first substrate and a second substrate, which face each other, a first transparent electrode disposed on the first substrate and facing the second substrate, a second transparent electrode disposed on the second substrate and facing the first transparent electrode, an electrolyte solution interposed between the first transparent electrode and the second transparent electrode, and a counter electrode material layer disposed on the second transparent electrode and contacting the electrolyte solution.
    Type: Grant
    Filed: April 4, 2018
    Date of Patent: November 19, 2019
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Seong-Mok Cho, Sujung Kim, Tae-Youb Kim, Juhee Song, Chil Seong Ah, Yong Hae Kim, Joo Yeon Kim, Hojun Ryu, Jeong Ik Lee, Sang Hoon Cheon, Chi-Sun Hwang
  • Publication number: 20190342993
    Abstract: Provided is stretchable electronics. The stretchable electronics includes stretchable substrate, first support patterns disposed on a first surface of the stretchable substrate, and output devices disposed on the first patterns, respectively. The first support patterns are arranged in a first direction and a second direction, which are parallel to an extension direction of the substrate, and each of the output devices generates an output stimulation.
    Type: Application
    Filed: December 12, 2018
    Publication date: November 7, 2019
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seongdeok AHN, Seung Youl KANG, Seong Hyun KIM, Hye Jin KIM, Kang-Ho PARK, Jeong Ik LEE, Young-deuk JEON, Chi-Sun HWANG, Jae Bon KOO, Su Jae LEE
  • Publication number: 20190312148
    Abstract: Provided is a thin film transistor including a substrate, a first spacer on the substrate, a second spacer on the first spacer, a light shield layer intervened between the first spacer and the second spacer, a semiconductor layer on the second spacer, and a gate electrode on the semiconductor layer, wherein the light shield layer includes a plurality of inclined surfaces against a top surface of the substrate.
    Type: Application
    Filed: April 3, 2019
    Publication date: October 10, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Jae-Eun PI, Seung Youl KANG, Jaehyun MOON, Seongdeok AHN, Jongchan LEE, Chul Woong JOO, Chi-Sun HWANG
  • Patent number: 10409116
    Abstract: Provided are a method for manufacturing a light emitting apparatus, the light emitting apparatus, and a window. The method for manufacturing the light emitting apparatus includes preparing a liquid crystal device including a support substrate, a first electrode, a liquid crystal layer, and a sacrificial structure, separating the sacrificial structure from the liquid crystal layer to expose one surface of the liquid crystal layer, and forming a second electrode on the one surface of the liquid crystal layer.
    Type: Grant
    Filed: July 20, 2017
    Date of Patent: September 10, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Gi Heon Kim, Sujung Kim, Yong Hae Kim, Chi-Sun Hwang
  • Publication number: 20190221761
    Abstract: Provided is a stretchable display including an elastic body, a light emitting unit on the elastic body, and a wiring unit on the elastic body, wherein the light emitting unit includes a first substrate unit on the elastic body, a buffer layer on the first substrate unit, and a light emitting element on the buffer layer, the wiring unit includes a second substrate unit on the elastic body, a driving element configured to control the light emitting element, a wiring configured to electrically connect the driving element and the light emitting element, and an insulation layer configured to cover the driving element and the wiring, the light emitting unit and the wiring unit have respective corrugation structures, a thickness of the light emitting unit is larger than that of the wiring unit, a modulus of elasticity of the buffer layer is larger than that of the insulation layer, and a modulus of elasticity of the elastic body is smaller than that of the insulation layer.
    Type: Application
    Filed: November 29, 2018
    Publication date: July 18, 2019
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Chi-Sun HWANG, Seung Youl KANG, Byoung-Hwa KWON, Gi Heon KIM, Seong Hyun KIM, Jaehyun MOON, Young Sam PARK, Seongdeok AHN, JEONG IK LEE, Sung Haeng CHO
  • Publication number: 20190187537
    Abstract: Provided is an optoelectronic element including a first substrate, a first electrode on the first substrate, a first lens pattern disposed on the first electrode and including a liquid crystal and a black dye molecule, a second lens pattern disposed on the first lens pattern, and a second electrode on the second lens pattern, wherein the black dye molecule includes about 1 to 4 azo groups and about 2 to 5 aromatic cyclic compounds.
    Type: Application
    Filed: February 21, 2019
    Publication date: June 20, 2019
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Gi Heon KIM, Yong Hae KIM, Chi-Sun HWANG
  • Publication number: 20190137799
    Abstract: Provided is a liquid crystal device. The liquid crystal device includes a first substrate and a second substrate facing each other, a first electrode disposed between the first substrate and the second substrate and adjacent to the first substrate, a second electrode disposed between the first substrate and the second substrate and adjacent to the second substrate, a first alignment film disposed between the first electrode and the second electrode and adjacent to the first electrode, a second alignment film disposed between the first electrode and the second electrode and adjacent to the second electrode, and a liquid crystal layer disposed between the first alignment film and the second alignment film, wherein the liquid crystal layer includes a liquid crystal portion containing liquid crystal molecules, and a hydrophobic portion containing a hydrophobic material, the liquid crystal portion and the hydrophobic portion are phase-separated from each other, and the hydrophobic portion includes fluorine.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 9, 2019
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Gi Heon KIM, Yong Hae KIM, Chi-Sun HWANG, Chi-Young HWANG
  • Patent number: 10281792
    Abstract: An electrochromic mirror includes a first electrode structure, a second electrode structure provided on the first electrode structure, and an electrolyte provided between the first and second electrode structures. Here, the first electrode structure further includes a metal layer, a graphene layer disposed on the metal layer, and an interface part disposed between the metal layer and the graphene layer. The interface part includes a micro/nano-porous polymer material.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: May 7, 2019
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joo Yeon Kim, Jeong Ik Lee, Sang Hoon Cheon, Nam Sung Cho, Seong-Mok Cho, Yong Hae Kim, Tae-Youb Kim, Hojun Ryu, Chil Seong Ah, Chi-Sun Hwang
  • Publication number: 20190025665
    Abstract: Provided is a reversible electrochemical mirror including a first substrate and a second substrate, which face each other, a first transparent electrode disposed on the first substrate and facing the second substrate, a second transparent electrode disposed on the second substrate and facing the first transparent electrode, an electrolyte solution interposed between the first transparent electrode and the second transparent electrode, and a counter electrode material layer disposed on the second transparent electrode and contacting the electrolyte solution.
    Type: Application
    Filed: April 4, 2018
    Publication date: January 24, 2019
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seong-Mok CHO, Sujung KIM, Tae-Youb KIM, Juhee SONG, Chil Seong AH, Yong Hae KIM, Joo Yeon KIM, Hojun RYU, Jeong Ik LEE, Sang Hoon CHEON, Chi-Sun HWANG
  • Patent number: 10156760
    Abstract: A method for manufacturing a liquid crystal device includes preparing a precursor solution comprising a monomer, a blue dye, a green dye, and a red dye dissolved in the monomer, and liquid crystal molecules; and polymerizing the monomer of the precursor solution to form a liquid crystal layer. The blue dye, the green dye, and the red dye reflect light of different wavelengths from each other. A black color is available in a single pixel when, based on total amount of the blue dye, the green dye, and the red dye, the blue dye is present in an amount ranging from about 25 wt % to about 30 wt %, the green dye is present in an amount ranging from about 40 wt % to about 50 wt %, and the red dye is present in an amount ranging from about 25 wt % to about 30 wt %.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: December 18, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sujung Kim, Gi Heon Kim, Yong Hae Kim, Chi-Sun Hwang