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: 20240114777
    Abstract: The present disclosure relates to a plurality of host materials, an organic electroluminescent compound, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds according to the present disclosure as a plurality of host materials or by comprising the compound according to the present disclosure, it is possible to produce an organic electroluminescent device having lower driving voltage, higher luminous efficiency, and/or longer lifetime properties compared to the conventional organic electroluminescent devices.
    Type: Application
    Filed: July 20, 2023
    Publication date: April 4, 2024
    Inventors: So-Young JUNG, Hyo-Nim SHIN, Doo-Hyeon MOON, Sang-Hee CHO, Hyun-Ju KANG
  • Patent number: 11950506
    Abstract: The present disclosure relates to a plurality of host materials comprising a first host material comprising a compound represented by formula 1, and a second host material comprising a compound represented by formula 2, and an organic electroluminescent device comprising the same. By comprising a specific combination of compounds as host materials, it is possible to provide an organic electroluminescent device having lower driving voltage, higher luminous efficiency, higher power efficiency, and/or superior lifespan characteristics compared to conventional organic electroluminescent devices.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: April 2, 2024
    Assignee: Rohm and Haas Electronic Materials Korea Ltd.
    Inventors: So-Young Jung, Su-Hyun Lee, Mi-Ja Lee, Sang-Hee Cho, Doo-Hyeon Moon
  • 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
  • Publication number: 20220270966
    Abstract: An integrated circuit includes first power supply lines which extend in a first direction and are spaced apart from each other in a second direction different from the first direction. A second power supply line extends in the first direction and is placed between the first power supply lines adjacent to each other in the second direction. A decoupling filler cell is placed between the first power supply lines adjacent to each other in the second direction. The decoupling filler cell includes a decoupling capacitor region formed by a gate electrode and a decap transistor including a first source/drain region of a first conductive type. The gate electrode is connected to the second power supply line, the first source/drain region is connected to the first power supply lines, and the second power supply line passes through the decoupling capacitor region.
    Type: Application
    Filed: October 27, 2021
    Publication date: August 25, 2022
    Inventors: SHIN WOO KIM, CHANG BEOM KIM, JAE HA LEE, DOO HEE CHO, JAE WAN CHOI
  • 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
  • Patent number: 10882010
    Abstract: The present disclosure relates to a technique for manufacturing a humidifying membrane including a hydrophobic thin film-coating layer having a nano-sized crack morphology pattern on the surface of an aromatic hydrocarbon-based polymer ion exchange membrane and applying the membrane to a reverse electrodialysis process. The humidifying membrane including a hydrophobic thin film-coating layer having a nano-sized crack morphology pattern on the surface of an aromatic hydrocarbon-based polymer ion exchange membrane, manufactured according to the present disclosure, embodies a low bulk resistance of the ion exchange membrane and significantly improves ion selectivity, thereby overcoming the trade-off relationship between membrane resistance and ion selectivity, and thus may be commercially available as an anion and cation exchange membrane of a reverse electrodialysis device.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: January 5, 2021
    Assignee: Industry-University Cooperation Foundation Hanyang University
    Inventors: Young Moo Lee, Chi Hoon Park, So Young Lee, Doo Sung Hwang, Dongwon Shin, Doo Hee Cho, Kang Hyuck Lee
  • 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
  • Publication number: 20200107739
    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: Application
    Filed: September 10, 2019
    Publication date: April 9, 2020
    Applicant: 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