Patents by Inventor Doo-Hee Cho

Doo-Hee Cho 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: 20250189856
    Abstract: Provided is an electrochromic device for camouflage and a method for manufacturing the same. The device includes a lower plate including a lower substrate and a lower color-changing layer disposed on the lower substrate, an upper plate provided on the lower plate, including an upper substrate, an upper color-changing layer disposed on the upper substrate, and an upper hole that allows a portion of the lower color-changing layer to be exposed, a protective plate provided on the upper color-changing layer, and electrolyte disposed between the upper plate and the protective plate and provided in the upper hole of the upper plate.
    Type: Application
    Filed: December 4, 2024
    Publication date: June 12, 2025
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Chil Seong AH, Ji-Young OH, Tae-Youb KIM, Juhee SONG, Doo-Hee CHO
  • Publication number: 20250176309
    Abstract: An embodiment of the inventive concept provides a method for manufacturing a stretchable display device. The method includes manufacturing first to third unit devices including first to third alignment key patterns, respectively, each of which is provided in a pair and which are different in distance between the pair, mounting the first to third unit devices, by using a self-assemble method, on a transfer substrate having trenches which accommodate the first to third alignment key patterns, and transferring the first to third unit devices to a stretchable substrate.
    Type: Application
    Filed: October 16, 2024
    Publication date: May 29, 2025
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Doo-Hee CHO, Jae Bon KOO, Chan Woo PARK, Seongdeok AHN
  • Publication number: 20250123526
    Abstract: Provided is a dual display device. The device includes a lower substrate, a color filter layer disposed on the lower substrate, pixel electrodes on the color filter layer, a visible light switching layer on the pixel electrodes, an electrolyte layer on the visible light switching layer, an infrared radiation layer on the electrolyte layer, and an upper substrate on the infrared radiation layer.
    Type: Application
    Filed: August 13, 2024
    Publication date: April 17, 2025
    Inventors: Doo-Hee CHO, Tae-Youb KIM, Chil Seong AH, Ji-Young OH
  • Patent number: 12164183
    Abstract: Provided is a nano structure for controlling optical properties of an optical device. The nano structure includes a substrate, a surface modification layer provided on the substrate to modify surface energy of the substrate, and a capping layer provided on the surface modification layer. The capping layer includes a convex portion having a convex profile away from the surface modification layer and a concave portion that is in contact with the surface modification layer.
    Type: Grant
    Filed: October 1, 2021
    Date of Patent: December 10, 2024
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Doo-Hee Cho, Byoung-Hwa Kwon, Young Sam Park, Jin Wook Shin, Nam Sung Cho, Hyunsu Cho
  • Publication number: 20240338502
    Abstract: Disclosed is a camouflage pattern forming device, which includes a communication unit that receives first data including a location of an observer from an external device, an information collection unit that collects second data including images for each of a plurality of wavelength bands in external environment, a pattern forming unit that forms pattern data of the plurality of wavelength bands by performing machine learning based on the first data, the second data, and third data including camouflage pattern data for each environment, and a display unit that receives the pattern data from the pattern forming unit to form and display a camouflage patterns of the plurality of wavelength bands, and the display unit includes a display device and a heat generator capable of adjusting a heat emissivity.
    Type: Application
    Filed: February 27, 2024
    Publication date: October 10, 2024
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Tae-Youb KIM, Juhyun PARK, Chil Seong AH, Ji-Young OH, Doo-Hee CHO
  • Patent number: 11873232
    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: Grant
    Filed: September 16, 2021
    Date of Patent: January 16, 2024
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Hojun Ryu, Doo-Hee Cho, Juhee Song, Chil Seong Ah, Sang Hoon Cheon
  • Publication number: 20230096082
    Abstract: Disclosed are an electrochromic device including graphene electrodes and a method for making the same. An electrochromic device including graphene electrodes according to various example embodiments includes a first multilayer thin film structure connected to a first electrode of an external power source, and including a first graphene layer and a first metal protective layer formed on the first graphene layer to protect the first graphene layer from oxygen, a second multilayer thin film structure connected to a second electrode of the external power source, and including a second graphene layer and a second metal protective layer formed on the second graphene layer to protect the second graphene layer from oxygen, and an electrolyte charged between the first multilayer thin film structure and the second multilayer thin film structure.
    Type: Application
    Filed: February 11, 2022
    Publication date: March 30, 2023
    Inventors: Doo-Hee CHO, Tae-Youb KIM, Hojun RYU, Juhee SONG, Chil Seong AH
  • 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
  • Patent number: 11424299
    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: Grant
    Filed: April 7, 2020
    Date of Patent: August 23, 2022
    Assignee: 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
  • 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: 20220137436
    Abstract: Provided is a nano structure for controlling optical properties of an optical device. The nano structure includes a substrate, a surface modification layer provided on the substrate to modify surface energy of the substrate, and a capping layer provided on the surface modification layer. The capping layer includes a convex portion having a convex profile away from the surface modification layer and a concave portion that is in contact with the surface modification layer.
    Type: Application
    Filed: October 1, 2021
    Publication date: May 5, 2022
    Inventors: Doo-Hee CHO, Byoung-Hwa KWON, YOUNG SAM PARK, Jin Wook SHIN, Nam Sung CHO, Hyunsu CHO
  • Patent number: 11278227
    Abstract: Provided is a biometric information measurement method. The method includes providing a bio-material including at least one of cells and tissues, contacting a first electrode and a second electrode with the bio-material and applying a first electrical signal and a second electrical signal to the bio-material, sensing a third electrical signal from the bio-material, and analyzing an oxygen concentration in the bio-material from the third electrical signal.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: March 22, 2022
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Young Sam Park, Jaehyun Moon, Seongdeok Ahn, Byoung Gon Yu, Jeong Ik Lee, Nam Sung Cho, Doo-Hee Cho
  • Patent number: 11188704
    Abstract: A method of designing an integrated circuit includes receiving input data defining the integrated circuit, receiving information from a standard cell library including a plurality of standard cells, receiving information from a modified cell library including at least one modified cell having a same function as a corresponding standard cell among the plurality of standard cells and having a higher routability than the corresponding standard cell and generating output data by performing placement and routing in response to the input data, the information from the standard cell library and the information from the modified cell library.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: November 30, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-Tae Kim, Jung-Ho Do, Tae-Joong Song, Doo-Hee Cho, Seung-Young Lee
  • Patent number: 11183652
    Abstract: Provided are a flexible electronic device including device units, a first etching preventing layer provided on the device units, a conductive line provided on the first etching preventing layer and electrically connected to the device units, a flexible substrate covering the conductive line on the first etching preventing layer and the conductive line, a trench separating the device units and exposing a portion of a bottom surface of the first etching preventing layer and a side surface of each of the device units, and a flexible protective layer conformally covering a bottom surface of each of the device units and an inside of the trench, wherein each of the device units includes a protective substrate, driving parts provided on the protective substrate, and a first encapsulation layer configured to cover the driving parts, and a manufacturing method thereof.
    Type: Grant
    Filed: February 20, 2020
    Date of Patent: November 23, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Doo-Hee Cho, Young-Sam Park, Byoung Gon Yu
  • Publication number: 20200350506
    Abstract: Provided are a flexible electronic device including device units, a first etching preventing layer provided on the device units, a conductive line provided on the first etching preventing layer and electrically connected to the device units, a flexible substrate covering the conductive line on the first etching preventing layer and the conductive line, a trench separating the device units and exposing a portion of a bottom surface of the first etching preventing layer and a side surface of each of the device units, and a flexible protective layer conformally covering a bottom surface of each of the device units and an inside of the trench, wherein each of the device units includes a protective substrate, driving parts provided on the protective substrate, and a first encapsulation layer configured to cover the driving parts, and a manufacturing method thereof.
    Type: Application
    Filed: February 20, 2020
    Publication date: November 5, 2020
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Doo-Hee CHO, YOUNG-SAM PARK, Byoung Gon YU
  • Publication number: 20200334407
    Abstract: A method of designing an integrated circuit includes receiving input data defining the integrated circuit, receiving information from a standard cell library including a plurality of standard cells, receiving information from a modified cell library including at least one modified cell having a same function as a corresponding standard cell among the plurality of standard cells and having a higher routability than the corresponding standard cell and generating output data by performing placement and routing in response to the input data, the information from the standard cell library and the information from the modified cell library.
    Type: Application
    Filed: June 29, 2020
    Publication date: October 22, 2020
    Inventors: JIN-TAE KIM, JUNG-HO DO, TAE-JOONG SONG, DOO-HEE CHO, SEUNG-YOUNG LEE
  • 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: 10789448
    Abstract: The inventive concept provides an organic electronic device and a method of fabricating the same. The organic electronic device includes a flexible substrate configured to include a first region and a second region which are laterally spaced apart from each other, an organic light-emitting diode disposed in the first region of the flexible substrate, and a photodetector disposed in the second region of the flexible substrate, wherein the organic light-emitting diode and the photodetector are disposed on the same plane.
    Type: Grant
    Filed: July 13, 2018
    Date of Patent: September 29, 2020
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Young Sam Park, Jaehyun Moon, Seongdeok Ahn, Seung Youl Kang, Sung Haeng Cho, Byoung Gon Yu, Jeong Ik Lee, Jonghee Lee, Nam Sung Cho, Doo-Hee Cho, Hyunsu Cho
  • Patent number: 10726186
    Abstract: A method of designing an integrated circuit includes receiving input data defining the integrated circuit, receiving information from a standard cell library including a plurality of standard cells, receiving information from a modified cell library including at least one modified cell having a same function as a corresponding standard cell among the plurality of standard cells and having a higher routability than the corresponding standard cell and generating output data by performing placement and routing in response to the input data, the information from the standard cell library and the information from the modified cell library.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: July 28, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-Tae Kim, Jung-Ho Do, Tae-Joong Song, Doo-Hee Cho, Seung-Young Lee