Patents by Inventor Ji Yeon Choi

Ji Yeon Choi 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: 20220190093
    Abstract: A display device, includes: pixels at a display area; gate lines at the display area, and connected to the pixels; carry clock lines and scan clock lines at the display area; and a gate driving circuit distributedly located at the display area, and connected to the carry clock lines, the scan clock lines, and the gate lines. The gate driving circuit includes a plurality of stages, each of the stages to output, as a carry signal, a carry clock signal supplied through a corresponding carry clock line from among the carry clock lines, and to output, as a scan signal, a scan clock signal supplied through a corresponding scan clock line from among the scan clock lines. The corresponding carry clock line and the corresponding scan clock line corresponding to one stage from among the stages are spaced from each other with at least one of the pixels interposed therebetween.
    Type: Application
    Filed: August 17, 2021
    Publication date: June 16, 2022
    Inventors: Sang Yong NO, Tae Ho KANG, Kwi Hyun KIM, Hwa Rang LEE, Ji Yeon CHOI
  • Publication number: 20220102476
    Abstract: Provided is a tiled display. The tiled display includes: a first display device including a first display area including pixels, a second display device including a second display area including pixels adjacent to the first display area, and a seam between the first display area and the second display area. Each of the first display device and the second display device includes: a first base part supporting a respective one of the first display device and the second display device, a thin-film transistor layer on the first base part, the thin-film transistor layer including thin-film transistors included in the pixels and including connection lines in the seam, and bridge electrodes in the seam to couple between the connection lines of the first display device and the second display device.
    Type: Application
    Filed: August 24, 2021
    Publication date: March 31, 2022
    Inventors: Kwi Hyun KIM, Sang Yong NO, Tae Ho KANG, Hwa Rang LEE, Joon Hoo CHOI, Ji Yeon CHOI
  • Publication number: 20210237001
    Abstract: A pore-filled ion exchange polyelectrolyte composite membrane from which the surface ion exchange polyelectrolyte has been removed and a method of manufacturing the same are provided. The ion exchange polyelectrolyte composite membrane exhibits low film resistance and low in-plane-direction swelling degree, and has a smaller film-thickness than a commercial film, and thus, can be used for various purposes. In addition, since the pore-filled ion exchange polyelectrolyte composite membrane is continuously manufactured through a roll-to-roll process, the manufacturing process is simple, and manufacturing costs can be greatly reduced.
    Type: Application
    Filed: April 29, 2019
    Publication date: August 5, 2021
    Inventors: Young Woo Choi, Mi Soon Lee, Tae Young Kim, Young Gi Yoon, Beom Jun Kim, Min Ho Seo, Chi Young Jung, Jong Min Lee, Nam-jo Jeong, Seung Cheol Yang, Ji Yeon Choi
  • Publication number: 20210190029
    Abstract: An electric power generation system of the present invention comprises an upper reservoir for storing water, a lower reservoir for storing water dropped from the upper reservoir, a pressure chamber for pressurizing and spouting water falling from the upper reservoir, an electric generator formed to be driven by a water turbine rotating by the spouted water and a capacitor, a preliminary power generation equipment that generates electricity using water bypassed from the upper reservoir and water supplied from the outside to charge the capacitor, and a pump that is driven by the capacitor and is formed to pump water from the lower reservoir to the upper reservoir, said electric generator includes an internal power electric generator that supplies the generated power to devices inside the system, and an external power electric generator that supplies the generated power to the outside of the system.
    Type: Application
    Filed: November 7, 2017
    Publication date: June 24, 2021
    Inventor: Ji Yeon CHOI
  • Publication number: 20200316354
    Abstract: Disclosed is an energy self-sufficient real time bio-signal monitoring and nutrient and/or drug delivery system based on salinity gradient power generation. The energy self-sufficient real time bio-signal monitoring and/or nutrient delivery system based on salinity gradient power generation includes: an electricity generation and nutrient and/or drug delivery module including a reverse electrodialysis device which generates electricity by using a nutrient and/or drug solution and discharge a diluted nutrient solution; and a bio-signal measuring unit inserted into the electricity generation and nutrient and/or drug delivery module and configured to receive electricity from the electricity generation and nutrient and/or drug delivery module and measure a bio-signal.
    Type: Application
    Filed: February 2, 2018
    Publication date: October 8, 2020
    Inventors: Nam-jo JEONG, Ji Yeon CHOI, Han-Ki KIM, Seung Cheol YANG, Kyo Sik HWANG, Ji Hyung HAN, Joo-Youn NAM, Eun-Jin JWA, Soon-Chul PARK, Yong-Seog SEO, Moon-Seok JANG
  • Patent number: 10565368
    Abstract: Provided are an electronic device and a method of controlling same. The method of controlling the electronic device: displays a UI including a security index showing that the electronic device is in a state operating in a secure mode; compares the security index to a reference security index and determines whether the security index has been falsified; and when the security index is a falsified security index, shows that the security index is a security index that has been falsified.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: February 18, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-soo Kwag, Chang-sup Ahn, Joon-hyuk Ryu, Jung-kyuen Lee, Ji-yeon Choi, Sung-hyun Hong
  • Patent number: 10522849
    Abstract: The present invention relates to an electrochemical cell having a channel-type flow-electrode unit. The channel-type flow-electrode structure according to the present invention, which has at least two channel-type flow-electrode units, can significantly reduce manufacturing costs and installation space by reducing the number of parts while extending the electrode capacity to be suitable for large-scale plants for electricity generation, energy storage, desalination, etc. In addition, the channel-type flow-electrode structure can be applied not only to a capacitive flow-electrode device and/or a redox flow battery device, but also to all of the devices for electricity generation, energy storage, and desalination while moving ions or protons.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: December 31, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Dong-Kook Kim, Sung-Il Jeon, Ko-Yeon Choo, Younghyun Cho, Jeong-Gu Yeo, Jong-Soo Park, SeungCheol Yang, Ji Yeon Choi, Hong Ran Park, Ki Sook Lee, Young Jik Youn, Jung Hyun Lee, Hee-Yeon Kim
  • Patent number: 10509902
    Abstract: Provided are an electronic device and a method of controlling same. The method of controlling the electronic device: displays a UI including a security index showing that the electronic device is in a state operating in a secure mode; compares the security index to a reference security index and determines whether the security index has been falsified; and when the security index is a falsified security index, shows that the security index is a security index that has been falsified.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: December 17, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyung-soo Kwag, Chang-sup Ahn, Joon-hyuk Ryu, Jung-kyuen Lee, Ji-yeon Choi, Sung-hyun Hong
  • Patent number: 10427982
    Abstract: A method includes: supplying sources or nanoparticles of any one or two or more combinations selected from a group which consists of a carbon source, a doping source, a doped element containing carbon source, and a waste plastic source into a high-temperature and high-pressure closed autoclave, completely closing the high-temperature and high-pressure closed autoclave, and forming a nanoparticle-carbon core-shell structure by a single process by coating a carbon layer on the surface of the nanoparticles or forming a core-shell structure of nanoparticle-doped carbon by the single process by coating a carbon layer doped with the doped element on the surface of the nanoparticles under pressure self-generated in the autoclave and a reaction temperature in the range of 500 to 850° C. by heating the autoclave.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: October 1, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Namjo Jeong, Chan-Soo Kim, Ji Yeon Choi, Joo-youn Nam, Soon-chul Park, Moon seok Jang, Kangmin Chon, Ji-Hyung Han, Han-Ki Kim, Eun-Jin Jwa
  • Patent number: 10384201
    Abstract: Disclosed is a direct synthesis method of nanostructured catalyst particles on surfaces of various supports.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: August 20, 2019
    Assignee: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Namjo Jeong, Chan-Soo Kim, Eun-Jin Jwa, Ji Yeon Choi, Joo-Youn Nam, Soon-Chul Park, Moon-Seok Jang, Yong Seok Seo, Kyo Sik Hwang, Han Ki Kim, Ji Hyung Han, Tae Young Kim, Young Gi Yoon
  • Patent number: 10187359
    Abstract: The disclosure provides a secure message transmission apparatus and a processing method thereof. A method for processing a secure message may include receiving a message transmitted by a transmission-side terminal and determining whether the message is an encrypted message, by a non-secure message service unit; delivering the encrypted message to a secure message service unit by the non-secure message service unit when the message is the encrypted message; and decrypting the encrypted message, and re-encrypting the decrypted message and transmitting the re-encrypted message to a reception-side terminal, by the secure message service unit.
    Type: Grant
    Filed: February 11, 2016
    Date of Patent: January 22, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dave Ahn, Kyung-Soo Kwag, Ji-Yeon Choi, Sung-Hyun Hong
  • Patent number: 10106402
    Abstract: Disclosed are biomedical implants comprising surface-modified metal particles and biodegradable polymers; its use for suppressing inflammation; and a method for preparing a biomedical material, comprising: (a) modifying surface of basic metal particles with a polymer to obtain surface-modified metal particles; and (b) mixing the surface-modified metal particles with a biodegradable polymer, followed by manufacturing a biodegradable biomedical implant, or coating the resulting mixture on a conventional biomedical implant.
    Type: Grant
    Filed: January 6, 2011
    Date of Patent: October 23, 2018
    Assignee: Korea Institute of Science and Technology
    Inventors: Dong Keun Han, Kwi Deok Park, Jong Hee Kang, Bong Soo Lee, Ji Yeon Choi, Chang Hun Kum
  • Publication number: 20180196937
    Abstract: Provided are an electronic device and a method of controlling same. The method of controlling the electronic device: displays a UI including a security index showing that the electronic device is in a state operating in a secure mode; compares the security index to a reference security index and determines whether the security index has been falsified; and when the security index is a falsified security index, shows that the security index is a security index that has been falsified.
    Type: Application
    Filed: July 5, 2016
    Publication date: July 12, 2018
    Inventors: Kyung-soo KWAG, Chang-sup AHN, Joon-hyuk RYU, Jung-kyuen LEE, Ji-yeon CHOI, Sung-hyun HONG
  • Patent number: 10012859
    Abstract: A display device including: a substrate including first, second, and third pixel areas; a plurality of pixel electrodes positioned on the substrate within each of the first, second, and third pixel areas; and a plurality of roof layers each facing a respective one of the pixel electrodes, ones of the roof layers positioned to be spaced apart from respective ones of the pixel electrodes with a plurality of microcavities therebetween, the microcavities positioned to correspond to each of the first, second, and third pixel areas. The roof layer includes first and second color filter layers positioned corresponding to the first pixel area and the second pixel area and a third color filter layer positioned below the liquid crystal layer, and a cell gap of the microcavity corresponding to the third pixel area is smaller than cell gaps of the microcavities corresponding to the first and second pixel areas.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: July 3, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Il Park, Won Tae Kim, Ji Yeon Choi, Seok-Joon Hong
  • Publication number: 20180123145
    Abstract: The present invention relates to an electrochemical cell having a channel-type flow-electrode unit. The channel-type flow-electrode structure according to the present invention, which has at least two channel-type flow-electrode units, can significantly reduce manufacturing costs and installation space by reducing the number of parts while extending the electrode capacity to be suitable for large-scale plants for electricity generation, energy storage, desalination, etc. In addition, the channel-type flow-electrode structure can be applied not only to a capacitive flow-electrode device and/or a redox flow battery device, but also to all of the devices for electricity generation, energy storage, and desalination while moving ions or protons.
    Type: Application
    Filed: September 1, 2017
    Publication date: May 3, 2018
    Applicant: KOREA INSTITUTE OF ENERGY RESEARCH
    Inventors: Dong-Kook KIM, Sung-Il JEON, Ko-Yeon CHOO, Younghyun CHO, Jeong-Gu YEO, Jong-Soo PARK, SeungCheol YANG, Ji Yeon CHOI, Hong Ran PARK, Ki Sook LEE, Young Jik YOUN, Jung Hyun LEE, Hee-Yeon KIM
  • Patent number: 9798176
    Abstract: Provided is a display device including a display unit and a mirror unit adjacent to each other, in which the display unit includes a first substrate, a thin film transistor formed on the substrate, a pixel electrode connected to the thin film transistor, a roof layer formed on the pixel electrode to be spaced apart from the pixel electrode with a microcavity therebetween, and a liquid crystal layer filling the microcavity, and the mirror unit includes a second substrate, a first electrode formed on the second substrate, a second electrode formed on the first substrate to be spaced apart from the first electrode with a microcavity therebetween, and an electrochromic layer formed in the microcavity.
    Type: Grant
    Filed: March 2, 2016
    Date of Patent: October 24, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji Yeon Choi, Sang Ji Park, Byung-Gon Kum
  • Patent number: 9777153
    Abstract: A polyalkylene carbonate resin composition with interpenetrating network structure includes an aliphatic polycarbonate obtained through a reaction of carbon dioxide with at least one epoxide compound selected from the group consisting of (C2-C10)alkylene oxide substituted or unsubstituted with halogen or alkoxy, (C4-C20)cycloalkylene oxide substituted or unsubstituted with halogen or alkoxy, and (C8-C20)styrene oxide substituted or unsubstituted with halogen, alkoxy, alkyl or aryl, at least one compound selected from a polyol compound, an epoxy compound and an acryl compound, and a curing agent for polymerization or networking.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: October 3, 2017
    Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.
    Inventors: Seung Gweon Hong, Jae Young Park, Hye Lim Kim, Ji Yeon Choi, Kwang Jin Chung, Myung Ahn Ok
  • Publication number: 20170232431
    Abstract: Disclosed is a direct synthesis method of nanostructured catalyst particles on surfaces of various supports.
    Type: Application
    Filed: February 17, 2017
    Publication date: August 17, 2017
    Inventors: Namjo Jeong, Chan-Soo Kim, Eun-Jin Jwa, Ji Yeon Choi, Joo-Youn Nam, Soon-Chul Park, Moon-Seok Jang, Yong Seok Seo, Kyo Sik Hwang, Han Ki Kim, Ji Hyung Han, Tae Young Kim, Young Gi Yoon
  • Patent number: 9718959
    Abstract: Provided are an aliphatic polycarbonate-polyurethane composition and an aliphatic polycarbonate-polyurethane polymer using the same.
    Type: Grant
    Filed: December 10, 2014
    Date of Patent: August 1, 2017
    Assignees: SK Innovation Co., Ltd., SK Global Chemical Co., Ltd.
    Inventors: Ji Yeon Choi, Jae Young Park, Seung Gweon Hong, Tae Wook Kwon, Kwang Jin Chung
  • Publication number: 20170081248
    Abstract: A method includes: supplying sources or nanoparticles of any one or two or more combinations selected from a group which consists of a carbon source, a doping source, a doped element containing carbon source, and a waste plastic source into a high-temperature and high-pressure closed autoclave, completely closing the high-temperature and high-pressure closed autoclave, and forming a nanoparticle-carbon core-shell structure by a single process by coating a carbon layer on the surface of the nanoparticles or forming a core-shell structure of nanoparticle-doped carbon by the single process by coating a carbon layer doped with the doped element on the surface of the nanoparticles under pressure self-generated in the autoclave and a reaction temperature in the range of 500 to 850° C. by heating the autoclave.
    Type: Application
    Filed: September 16, 2016
    Publication date: March 23, 2017
    Inventors: Namjo Jeong, Chan-Soo Kim, Ji Yeon Choi, Joo-Youn Nam, Soon-Chul Park, Moon Seok Jang, Kangmin Chon, Ji-Hyung Han, Han-Ki Kim, Eun-Jin Jwa