Patents by Inventor Chil Seong Ah

Chil Seong Ah 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: 11550198
    Abstract: Provided is an electrochromic display device including: a first substrate; a second substrate on the first substrate; an electrolyte layer disposed between the first substrate and the second substrate; a first transparent electrode provided between the electrolyte layer and the first substrate; second transparent electrodes provided between the electrolyte layer and the second substrate; a first electrochromic layer provided between the first transparent electrode and the electrolyte layer; and a second electrochromic layer provided between the second transparent electrodes and the electrolyte layer, wherein the second transparent electrodes each extend in a first direction and be disposed apart from each other in a second direction perpendicular to the first direction, the second electrochromic layer extends between the second transparent electrodes and contacts a lower surface of the second substrate, the first electrochromic layer includes an inorganic electrochromic material, and the second electrochromic
    Type: Grant
    Filed: November 4, 2021
    Date of Patent: January 10, 2023
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Chil Seong Ah, Juhee Song, Hojun Ryu, Tae-Youb Kim, Sang Hoon Cheon, Doo-Hee Cho, Seong-Mok Cho, Chi-Sun Hwang
  • Publication number: 20220214589
    Abstract: Provided is a method of manufacturing a thin film electrode for an electrochromic device, and an electrochromic device manufactured thereby. Specifically, a method of manufacturing a thin film electrode for an electrochromic device includes: synthesizing insoluble Prussian blue nanoparticles; adding a surfactant to the insoluble Prussian blue nanoparticles to form water-soluble Prussian blue nanoparticles; adding a solvent and a binder to the water-soluble Prussian blue nanoparticles to form a mixed solution; applying the mixed solution onto an electrode; and performing a drying process on the electrode applied with the mixed solution, wherein the drying process may be performed at 15° C. to 30° C.
    Type: Application
    Filed: November 4, 2021
    Publication date: July 7, 2022
    Inventors: Tae-Youb KIM, Jisu HAN, Hojun RYU, Juhee SONG, Chil Seong AH, Sang Hoon CHEON
  • Publication number: 20220179272
    Abstract: Provided is an electrochromic display device including: a first substrate; a second substrate on the first substrate; an electrolyte layer disposed between the first substrate and the second substrate; a first transparent electrode provided between the electrolyte layer and the first substrate; second transparent electrodes provided between the electrolyte layer and the second substrate; a first electrochromic layer provided between the first transparent electrode and the electrolyte layer; and a second electrochromic layer provided between the second transparent electrodes and the electrolyte layer, wherein the second transparent electrodes each extend in a first direction and be disposed apart from each other in a second direction perpendicular to the first direction, the second electrochromic layer extends between the second transparent electrodes and contacts a lower surface of the second substrate, the first electrochromic layer includes an inorganic electrochromic material, and the second electrochromic
    Type: Application
    Filed: November 4, 2021
    Publication date: June 9, 2022
    Inventors: Chil Seong AH, Juhee SONG, Hojun RYU, Tae-Youb KIM, Sang Hoon CHEON, Doo-Hee CHO, Seong-Mok CHO, Chi-Sun HWANG
  • Publication number: 20220169531
    Abstract: Provided is a method for producing hexagonal tungsten oxide, the method including preparing an alkaline solvent having a pH of 8 to 9, which contains at least one of water or alcohol, adding tungsten chloride to the alkaline solvent to form a first reaction solution, adding an additive to the first reaction solution to form a second reaction solution, and adding strong acid to the second reaction solution to form nanoparticles. The additive includes any one of an amine compound having 1 to 8 carbon atoms or an aliphatic hydrocarbon derivative having 10 or more carbon atoms.
    Type: Application
    Filed: September 16, 2021
    Publication date: June 2, 2022
    Inventors: Hojun RYU, Doo-Hee CHO, Juhee SONG, Chil Seong AH, Sang Hoon CHEON
  • Publication number: 20210088866
    Abstract: Provided is an optical modulator. The optical modulator includes an optical waveguide device and an electrochromic device on the optical waveguide device. The optical waveguide device includes a cladding layer and a core layer extending in a first direction on the cladding layer. The electrochromic device includes a lower electrode on the core layer, an upper electrode facing the lower electrode, an electrolyte layer between the lower electrode and the upper electrode, and an electrochromic layer between the lower electrode and the electrolyte layer.
    Type: Application
    Filed: August 5, 2020
    Publication date: March 25, 2021
    Inventors: Jin Tae KIM, Chil Seong AH
  • Patent number: 10914555
    Abstract: Provided is an active camouflage device including a reflective layer, a first electrode disposed on the reflective layer, a second electrode facing the first electrode, and an electrolyte provided between the first and second electrodes. The first electrode includes a transparent electrode, and the second electrode includes a metal mesh.
    Type: Grant
    Filed: April 10, 2018
    Date of Patent: February 9, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Tae-Youb Kim, Juhee Song, Chil Seong Ah, Seong-Mok Cho, Sujung Kim, Joo Yeon Kim, Hojun Ryu, Jeong Ik Lee, Sang Hoon Cheon, Chi-Sun Hwang
  • Publication number: 20200352460
    Abstract: A pixel circuit includes a sensing block, a stimulation block, a first line control circuit, and a second line control circuit. The sensing block outputs biometric data of a biosignal in response to a first selection signal. The stimulation block radiates a stimulation signal in response to a second selection signal. The first line control circuit outputs the first selection signal for selecting the sensing block as a target sensing block, and outputs the second selection signal for selecting the stimulation block as a target stimulation block. The second line control circuit processes characteristic data associated with the biometric data and the stimulation signal.
    Type: Application
    Filed: April 20, 2020
    Publication date: November 12, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: CHUNWON BYUN, O Eun KWON, Chan Woo PARK, Hyunkoo LEE, Sukyung CHOI, Chan-mo KANG, Byoung-Hwa KWON, Chil Seong AH, Hyunsu CHO, JEONG IK LEE, Nam Sung CHO
  • 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
  • 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
  • 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
  • Publication number: 20180335281
    Abstract: Provided is an active camouflage device including a reflective layer, a first electrode disposed on the reflective layer, a second electrode facing the first electrode, and an electrolyte provided between the first and second electrodes. The first electrode includes a transparent electrode, and the second electrode includes a metal mesh.
    Type: Application
    Filed: April 10, 2018
    Publication date: November 22, 2018
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Tae-Youb KIM, Juhee SONG, Chil Seong AH, Seong-Mok CHO, Sujung KIM, Joo Yeon KIM, Hojun RYU, JEONG IK LEE, Sang Hoon CHEON, Chi-Sun HWANG
  • Publication number: 20180231856
    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: Application
    Filed: January 8, 2018
    Publication date: August 16, 2018
    Applicant: 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
  • Patent number: 10012886
    Abstract: Disclosed is an optical modulator. An optical modulator comprises a substrate, an upper transparent electrode on the substrate, a partition wall providing a chamber between the substrate and the upper transparent electrode, an optical modulation member provided in the chamber and disposed on the substrate, and an electrolyte filling the chamber and including a first metal in an ionic state. The optical modulation member comprises a reflection layer on the substrate, and a lower transparent electrode on the reflection layer.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: July 3, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seong-Mok Cho, Tae-Youb Kim, Seung Youl Lee, Yong Hae Kim, Hojun Ryu, Juhee Song, Chil Seong Ah, Jeong Ik Lee, Chi-Sun Hwang
  • Patent number: 9964829
    Abstract: Provided is a transparent display apparatus including a lower panel on which a shutter region and a light emitting region are horizontally disposed, an upper panel including a recessed region configured to cover the shutter region and the light emitting region to face the lower panel, a light emitting device, and a shutter device. The shutter device includes a lower electrode and an electrochromic material layer that are sequentially laminated in the shutter region of the lower panel, an upper electrode disposed in the recessed region of the upper panel, and an electrolyte layer filled between the electrochromic material layer and the upper electrode.
    Type: Grant
    Filed: January 13, 2017
    Date of Patent: May 8, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Tae-Youb Kim, Chil Seong Ah, Seong-Mok Cho, Hojun Ryu
  • Patent number: 9897887
    Abstract: Provided is an electrochromic device, which may prevent a damage of an electrode and include a lower substrate and an upper substrate configured to face each other with an electrolyte layer therebetween, an upper electrode provided between the electrolyte layer and the upper substrate, a lower electrode provided between the electrolyte layer and the lower substrate, an upper ion reactive layer provided between the upper electrode and the electrolyte layer, and a lower protection layer provided between the lower electrode and the electrolyte layer and configured to prohibit the lower electrode and the electrolyte layer from contacting.
    Type: Grant
    Filed: August 11, 2016
    Date of Patent: February 20, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Joo Yeon Kim, Hojun Ryu, Sang Hoon Cheon, Seong-Mok Cho, Ji-Young Oh, Tae-Youb Kim, Chil Seong Ah, Yong Hae Kim, Jeong Ik Lee, Nam Sung Cho, Chi-Sun Hwang
  • Publication number: 20180011384
    Abstract: Disclosed is an optical modulator. An optical modulator comprises a substrate, an upper transparent electrode on the substrate, a partition wall providing a chamber between the substrate and the upper transparent electrode, an optical modulation member provided in the chamber and disposed on the substrate, and an electrolyte filling the chamber and including a first metal in an ionic state. The optical modulation member comprises a reflection layer on the substrate, and a lower transparent electrode on the reflection layer.
    Type: Application
    Filed: March 17, 2017
    Publication date: January 11, 2018
    Inventors: Seong-Mok CHO, Tae-Youb KIM, Seung Youl LEE, Yong Hae KIM, Hojun RYU, Juhee SONG, Chil Seong AH, Jeong Ik LEE, Chi-Sun HWANG
  • Publication number: 20170219902
    Abstract: Provided is an electrochromic device, which may prevent a damage of an electrode and include a lower substrate and an upper substrate configured to face each other with an electrolyte layer therebetween, an upper electrode provided between the electrolyte layer and the upper substrate, a lower electrode provided between the electrolyte layer and the lower substrate, an upper ion reactive layer provided between the upper electrode and the electrolyte layer, and a lower protection layer provided between the lower electrode and the electrolyte layer and configured to prohibit the lower electrode and the electrolyte layer from contacting.
    Type: Application
    Filed: August 11, 2016
    Publication date: August 3, 2017
    Inventors: Joo Yeon KIM, Hojun RYU, Sang Hoon CHEON, Seong-Mok CHO, Ji-Young OH, Tae-Youb KIM, Chil Seong AH, Yong Hae KIM, Jeong Ik LEE, Nam Sung CHO, Chi-Sun HWANG
  • Publication number: 20170219900
    Abstract: Provided is a transparent display apparatus including a lower panel on which a shutter region and a light emitting region are horizontally disposed, an upper panel including a recessed region configured to cover the shutter region and the light emitting region to face the lower panel, a light emitting device, and a shutter device. The shutter device includes a lower electrode and an electrochromic material layer that are sequentially laminated in the shutter region of the lower panel, an upper electrode disposed in the recessed region of the upper panel, and an electrolyte layer filled between the electrochromic material layer and the upper electrode.
    Type: Application
    Filed: January 13, 2017
    Publication date: August 3, 2017
    Inventors: Tae-Youb KIM, Chil Seong AH, Seong-Mok CHO, Hojun RYU
  • Patent number: 9651844
    Abstract: Provided is a reversible electrochemical mirror including a first substrate, a second substrate on the first substrate and spaced apart from the first substrate, a first transparent electrode on the first substrate, a second transparent electrode under the second substrate, a semi-transmissive film between the second substrate and the second transparent electrode, a barrier rib having a chamber between the first and second transparent electrode and an electrolyte solution filled in the chamber.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: May 16, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Tae-Youb Kim, Chil Seong Ah, Seong-Mok Cho, Hojun Ryu