Patents by Inventor Seongcheol Mun

Seongcheol Mun 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: 11286964
    Abstract: Provided is a soft actuator. The soft actuator includes a first bistable polymer layer, a second bistable polymer layer on the first bistable polymer layer, a first flexible electrode layer on an upper surface of the second bistable polymer layer, a second flexible electrode layer between the first bistable polymer layer and the second bistable polymer layer, a first light absorption heating layer disposed on the first flexible electrode layer and configured to increase a temperature when light is absorbed, and a first voltage supply unit, wherein the first voltage supply unit is electrically connected to the first flexible electrode layer and the second flexible electrode layer.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: March 29, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seongcheol Mun, Sungryul Yun, Jeong Muk Lim, Inwook Hwang
  • Patent number: 11275444
    Abstract: The present invention relates to a shape-variable electronic device and an operation method of the same and, more specifically, the shape-variable electronic device includes: a substrate having a cell region; a light source unit on the cell region; and a flexible layer vertically spaced apart from the light source unit. The flexible layer includes an actuator part that changes a shape of the flexible layer, and the actuator part includes: a photo-thermal response part that receives light emitted from the light source unit and generates thermal energy; a deformation part which receives the thermal energy from the photo-thermal response part and of which mechanical stiffness is reduced; and a top electrode and a bottom electrode on both surfaces of the deformation part, respectively.
    Type: Grant
    Filed: January 21, 2020
    Date of Patent: March 15, 2022
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Sung Ryul Yun, Suntak Park, Seongcheol Mun, Bong Je Park, Seung Koo Park, JaeWoong Yoon, Inwook Hwang, Jeong Muk Lim
  • Publication number: 20210365121
    Abstract: The present invention relates to a shape-variable electronic device and an operation method of the same and, more specifically, the shape-variable electronic device includes: a substrate having a cell region; a light source unit on the cell region; and a flexible layer vertically spaced apart from the light source unit. The flexible layer includes an actuator part that changes a shape of the flexible layer, and the actuator part includes: a photo-thermal response part that receives light emitted from the light source unit and generates thermal energy; a deformation part which receives the thermal energy from the photo-thermal response part and of which mechanical stiffness is reduced; and a top electrode and a bottom electrode on both surfaces of the deformation part, respectively.
    Type: Application
    Filed: January 21, 2020
    Publication date: November 25, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Sung Ryul YUN, Suntak PARK, Seongcheol MUN, Bong Je PARK, Seung Koo PARK, JaeWoong YOON, Inwook HWANG, Jeong Muk LIM
  • Publication number: 20210292495
    Abstract: Provided are a composition for a light transmittance control film, and a light transmittance control film. According to the inventive concept, the light transmittance control film includes a matrix part including a copolymer and a polymer chain which is grafted to the copolymer; and a dispersed part including a polymer derived from a first monomer, and are provided in the matrix part, wherein the polymer chain is derived from the first monomer, first light transmittance is shown while external force is applied, and second light transmittance which is greater than the first light transmittance may be shown after the external force is removed.
    Type: Application
    Filed: May 19, 2021
    Publication date: September 23, 2021
    Inventors: Seung Koo PARK, Sung Ryul YUN, Ki Uk KYUNG, Mi Jeong CHOI, Bong Je PARK, Suntak PARK, Saekwang NAM, Seongcheol MUN, Eun Jin SHIN, Jeong Mook LIM
  • Patent number: 11041055
    Abstract: Provided are a composition for a light transmittance control film, and a light transmittance control film. According to the inventive concept, the light transmittance control film includes a matrix part including a copolymer and a polymer chain which is grafted to the copolymer; and a dispersed part including a polymer derived from a first monomer, and are provided in the matrix part, wherein the polymer chain is derived from the first monomer, first light transmittance is shown while external force is applied, and second light transmittance which is greater than the first light transmittance may be shown after the external force is removed.
    Type: Grant
    Filed: April 19, 2018
    Date of Patent: June 22, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Seung Koo Park, Sung Ryul Yun, Ki Uk Kyung, Mi Jeong Choi, Bong Je Park, Suntak Park, Saekwang Nam, Seongcheol Mun, Eun Jin Shin, Jeong Mook Lim
  • Publication number: 20210180620
    Abstract: Provided is a soft actuator. The soft actuator includes a first bistable polymer layer, a second bistable polymer layer on the first bistable polymer layer, a first flexible electrode layer on an upper surface of the second bistable polymer layer, a second flexible electrode layer between the first bistable polymer layer and the second bistable polymer layer, a first light absorption heating layer disposed on the first flexible electrode layer and configured to increase a temperature when light is absorbed, and a first voltage supply unit, wherein the first voltage supply unit is electrically connected to the first flexible electrode layer and the second flexible electrode layer.
    Type: Application
    Filed: December 9, 2020
    Publication date: June 17, 2021
    Applicant: Electronics and Telecommunications Research Institute
    Inventors: Seongcheol MUN, Sungryul YUN, Jeong Muk LIM, Inwook HWANG
  • Patent number: 10996432
    Abstract: A reflective active variable lens includes an upper electrode, a lower electrode disposed in parallel to the upper electrode, a deformation part disposed between the upper electrode and the lower electrode, a reflective part disposed on the upper electrode, and a support part disposed to surround the deformation part. Here, the deformation part and the support part are connected to each other to provide a single structure, the deformation part is expanded from an initial shape when an electric field is formed between the upper electrode and the lower electrode, and the expanded deformation part is contracted when the electric field is removed and restored to the initial shape.
    Type: Grant
    Filed: December 10, 2018
    Date of Patent: May 4, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Suntak Park, Bong Je Park, Ki-Uk Kyung, Seung Koo Park, Sung Ryul YuN, Seongcheol Mun, Jeong Muk Lim
  • Patent number: 10898404
    Abstract: An artificial muscle includes a first stress transmission part and a second stress transmission part, which are spaced apart from each other in a first direction, a contraction coil spring provided between the first and second stress transmission parts to pull the first and second stress transmission parts, and an expansion part provided between the first and second stress transmission parts to push the first and second stress transmission parts. The contraction coil spring has a shape of a spring progressing in the first direction, and the contraction coil spring is contracted by heat.
    Type: Grant
    Filed: February 15, 2018
    Date of Patent: January 26, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jeong Mook Lim, Sung Ryul Yun, Ki-Uk Kyung, Seongcheol Mun
  • Publication number: 20200032013
    Abstract: Provided are a composition for a light transmittance control film, and a light transmittance control film. According to the inventive concept, the light transmittance control film includes a matrix part including a copolymer and a polymer chain which is grafted to the copolymer; and a dispersed part including a polymer derived from a first monomer, and are provided in the matrix part, wherein the polymer chain is derived from the first monomer, first light transmittance is shown while external force is applied, and second light transmittance which is greater than the first light transmittance may be shown after the external force is removed.
    Type: Application
    Filed: April 19, 2018
    Publication date: January 30, 2020
    Inventors: Seung Koo PARK, Sung Ryul YUN, Ki Uk KYUNG, Mi Jeong CHOI, Bong Je PARK, Suntak PARK, Saekwang NAM, Seongcheol MUN, Eun Jin SHIN, Jeong Mook LIM
  • Publication number: 20190196149
    Abstract: A reflective active variable lens includes an upper electrode, a lower electrode disposed in parallel to the upper electrode, a deformation part disposed between the upper electrode and the lower electrode, a reflective part disposed on the upper electrode, and a support part disposed to surround the deformation part. Here, the deformation part and the support part are connected to each other to provide a single structure, the deformation part is expanded from an initial shape when an electric field is formed between the upper electrode and the lower electrode, and the expanded deformation part is contracted when the electric field is removed and restored to the initial shape.
    Type: Application
    Filed: December 10, 2018
    Publication date: June 27, 2019
    Inventors: Suntak PARK, Bong Je PARK, Ki-Uk KYUNG, Seung Koo PARK, Sung Ryul YUN, Seongcheol MUN, Jeong Muk LIM
  • Publication number: 20180263839
    Abstract: An artificial muscle includes a first stress transmission part and a second stress transmission part, which are spaced apart from each other in a first direction, a contraction coil spring provided between the first and second stress transmission parts to pull the first and second stress transmission parts, and an expansion part provided between the first and second stress transmission parts to push the first and second stress transmission parts. The contraction coil spring has a shape of a spring progressing in the first direction, and the contraction coil spring is contracted by heat.
    Type: Application
    Filed: February 15, 2018
    Publication date: September 20, 2018
    Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Jeong Mook Lim, Sung Ryul Yun, Ki-Uk Kyung, Seongcheol Mun