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).
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Publication number: 20240121375Abstract: The present disclosure relates to a stereoscopic surface display device, and more particularly, to a stereoscopic surface display device including: a light source unit including a plurality of optical elements; and a stereoscopic display unit disposed on the light source unit. The stereoscopic display unit includes: a polymer layer; and a light absorption layer buried in the polymer layer. The stereoscopic display unit includes a plurality of cell areas arranged in two-dimension, the light absorption layer is disposed in the plurality of cell areas, the plurality of optical elements vertically overlap the plurality of cell areas, respectively, and each of the plurality of cell areas has a stereoscopic shape.Type: ApplicationFiled: October 6, 2023Publication date: April 11, 2024Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sung Ryul YUN, Seongcheol MUN, Inwook HWANG, Mi Jeong CHOI
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Patent number: 11921929Abstract: Provided is a stereoscopic surface display device including a stereoscopic display unit having a cell area, wherein the stereoscopic display unit includes a first flexible layer, a first optical waveguide and a first optical output unit in the first flexible layer, wherein the first optical output unit are disposed in the cell area, a first light source disposed on a side of the stereoscopic display unit, wherein the first optical waveguide connects the first light source and the first optical output unit, a first photothermal response layer on the first flexible layer, wherein the first photothermal response layer is configured to receive output light emitted from the first optical output unit and emit thermal energy, and a shape deformation layer on the first photothermal response layer, wherein the shape deformation layer is configured to generate bending deformation by receiving the thermal energy from the first photothermal response layer.Type: GrantFiled: February 7, 2023Date of Patent: March 5, 2024Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sung Ryul Yun, Seung Koo Park, Inwook Hwang, Seongcheol Mun, Mi Jeong Choi
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Publication number: 20230269362Abstract: Provided is a stereoscopic surface display device including a stereoscopic display unit having a cell area, wherein the stereoscopic display unit includes a first flexible layer, a first optical waveguide and a first optical output unit in the first flexible layer, wherein the first optical output unit are disposed in the cell area, a first light source disposed on a side of the stereoscopic display unit, wherein the first optical waveguide connects the first light source and the first optical output unit, a first photothermal response layer on the first flexible layer, wherein the first photothermal response layer is configured to receive output light emitted from the first optical output unit and emit thermal energy, and a shape deformation layer on the first photothermal response layer, wherein the shape deformation layer is configured to generate bending deformation by receiving the thermal energy from the first photothermal response layer.Type: ApplicationFiled: February 7, 2023Publication date: August 24, 2023Inventors: Sung Ryul YUN, Seung Koo PARK, Inwook HWANG, Seongcheol MUN, Mi Jeong CHOI
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Publication number: 20230138999Abstract: Provided is a soft actuator. The soft actuator includes a first support body, a second support body spaced apart from the first support body in a first direction, a yarn structure having one end coupled to the first support body and the other end coupled to the second support body, and a light source part spaced apart from the yarn structure in a second direction crossing the first direction. The yarn structure includes a polymer layer having a coil spring shape extending in the first direction and a light absorption layer configured to surround an outer surface of the polymer layer.Type: ApplicationFiled: October 27, 2022Publication date: May 4, 2023Applicant: Electronics and Telecommunications Research InstituteInventors: Sung Ryul YUN, Inwook HWANG, Hyung Cheol SHIN, Seongcheol MUN, Mi Jeong CHOI
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Publication number: 20230103068Abstract: 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: ApplicationFiled: November 18, 2022Publication date: March 30, 2023Inventors: 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
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Patent number: 11286964Abstract: 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: GrantFiled: December 9, 2020Date of Patent: March 29, 2022Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Seongcheol Mun, Sungryul Yun, Jeong Muk Lim, Inwook Hwang
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Patent number: 11275444Abstract: 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: GrantFiled: January 21, 2020Date of Patent: March 15, 2022Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Sung Ryul Yun, Suntak Park, Seongcheol Mun, Bong Je Park, Seung Koo Park, JaeWoong Yoon, Inwook Hwang, Jeong Muk Lim
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Publication number: 20210365121Abstract: 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: ApplicationFiled: January 21, 2020Publication date: November 25, 2021Applicant: Electronics and Telecommunications Research InstituteInventors: Sung Ryul YUN, Suntak PARK, Seongcheol MUN, Bong Je PARK, Seung Koo PARK, JaeWoong YOON, Inwook HWANG, Jeong Muk LIM
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Publication number: 20210292495Abstract: 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: ApplicationFiled: May 19, 2021Publication date: September 23, 2021Inventors: 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
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Patent number: 11041055Abstract: 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: GrantFiled: April 19, 2018Date of Patent: June 22, 2021Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: 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
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Publication number: 20210180620Abstract: 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: ApplicationFiled: December 9, 2020Publication date: June 17, 2021Applicant: Electronics and Telecommunications Research InstituteInventors: Seongcheol MUN, Sungryul YUN, Jeong Muk LIM, Inwook HWANG
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Patent number: 10996432Abstract: 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: GrantFiled: December 10, 2018Date of Patent: May 4, 2021Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Suntak Park, Bong Je Park, Ki-Uk Kyung, Seung Koo Park, Sung Ryul YuN, Seongcheol Mun, Jeong Muk Lim
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Patent number: 10898404Abstract: 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: GrantFiled: February 15, 2018Date of Patent: January 26, 2021Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Mook Lim, Sung Ryul Yun, Ki-Uk Kyung, Seongcheol Mun
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Publication number: 20200032013Abstract: 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: ApplicationFiled: April 19, 2018Publication date: January 30, 2020Inventors: 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
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Publication number: 20190196149Abstract: 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: ApplicationFiled: December 10, 2018Publication date: June 27, 2019Inventors: Suntak PARK, Bong Je PARK, Ki-Uk KYUNG, Seung Koo PARK, Sung Ryul YUN, Seongcheol MUN, Jeong Muk LIM
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Publication number: 20180263839Abstract: 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: ApplicationFiled: February 15, 2018Publication date: September 20, 2018Applicants: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE, ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Jeong Mook Lim, Sung Ryul Yun, Ki-Uk Kyung, Seongcheol Mun