Patents by Inventor Cheolmin Park

Cheolmin Park 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: 20210119930
    Abstract: Examples described herein relate to technologies for reliable packet transmission. In some examples, a network interface includes circuitry to: receive a request to transmit a packet to a destination device, select a path for the packet, provide a path identifier identifying one of multiple paths from the network interface to a destination and Path Sequence Number (PSN) for the packet, wherein the PSN is to identify a packet transmission order over the selected path, include the PSN in the packet, and transmit the packet. In some examples, if the packet is a re-transmit of a previously transmitted packet, the circuitry is to: select a path for the re-transmit packet, and set a PSN of the re-transmit packet that is a current packet transmission number for the selected path for the re-transmit packet.
    Type: Application
    Filed: October 29, 2020
    Publication date: April 22, 2021
    Inventors: Mark DEBBAGE, Robert SOUTHWORTH, Arvind SRINIVASAN, Cheolmin PARK, Todd RIMMER, Brian S. HAUSAUER
  • Publication number: 20210093232
    Abstract: The present invention relates to a liquid information sensor comprises at least more than one electrode set including a first electrode, and a second electrode which is disposed spaced apart from the first electrode and to which an alternating current signal is applied between the first electrode and the second electrode; and a ferroelectric layer including a first side in contact with the first electrode and the second electrode and a second side facing the first side and defining a receiving area for receiving the target liquid, and generating sound waves by physical vibration when the AC signal is applied.
    Type: Application
    Filed: December 4, 2019
    Publication date: April 1, 2021
    Inventors: Cheolmin Park, Jong Sung Kim, Eui Hyuk Kim, Chanho Park
  • Publication number: 20210088815
    Abstract: Disclosed are a light emission device including a magnetoactive element, a method of fabricating the same, and an electronic device including the light emission device. The disclosed light emission device may include a light emission layer; a first electrode and a second electrode spaced apart from each other on a first surface side of the light emission layer; and a magnetoactive fluid layer disposed on a second surface side of the light emission layer and having a plurality of nanostructures of which arrangement and distribution is configured to change according to application of a magnetic field. The light emitting properties of the light emission layer may be changed according to the arrangement and distribution of a plurality of nanostructures in the magnetoactive fluid layer. The plurality of nanostructures may include conductive nanowire and magnetic nanoparticle provided on the surfaces of the conductive nanowire.
    Type: Application
    Filed: September 24, 2020
    Publication date: March 25, 2021
    Applicant: UNIVERSITY-INDUSTRY FOUNDATION(UIF), YONSEI UNIVERSITY
    Inventors: Cheolmin PARK, Soyeon BAEK, Seung Won LEE
  • Publication number: 20200346314
    Abstract: A method of manufacturing a window for a display apparatus according to the present invention includes: providing, on a stage, a substrate including a foldable part bending around a folding axis extending in a first direction, and forming a groove on the foldable part. The forming the groove includes: grinding the foldable part by using a first machining wheel; grinding the foldable part by using a second machining wheel; and machining the foldable part by using a polishing wheel. The groove has at least one radius of curvature. The first machining wheel includes first abrasive grains, and the second machining wheel includes second abrasive grains less in size than the first abrasive grains.
    Type: Application
    Filed: July 16, 2020
    Publication date: November 5, 2020
    Inventors: Cheolmin PARK, Hoikwan LEE, Seung KIM, Jaejoong KWON, Eun-kyung YEON, Minsoo KIM, Seungho KIM, Jong-hoon YEUM
  • Patent number: 10722995
    Abstract: A method of manufacturing a window for a display apparatus according to the present invention includes: providing, on a stage, a substrate including a foldable part bending around a folding axis extending in a first direction, and forming a groove on the foldable part. The forming the groove includes: grinding the foldable part by using a first machining wheel; grinding the foldable part by using a second machining wheel; and machining the foldable part by using a polishing wheel. The groove has at least one radius of curvature. The first machining wheel includes first abrasive grains, and the second machining wheel includes second abrasive grains less in size than the first abrasive grains.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: July 28, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Cheolmin Park, Hoikwan Lee, Seung Kim, Jaejoong Kwon, Eun-kyung Yeon, Minsoo Kim, Seungho Kim, Jong-hoon Yeum
  • Patent number: 10706768
    Abstract: Provided are a luminous member, a method of driving the luminous member, a non-volatile memory device, a sensor, a method of driving the sensor, and a display apparatus. The luminous member includes a first electrode; a second electrode facing the first electrode; an emission layer, which is disposed on a main surface of the first electrode and emits light by power applied between the first electrode and the second electrode; and a ferrodielectric layer disposed between the emission layer and the second electrode, wherein AC power applied to the luminous member is controlled based on polarity or magnitude of a residual polarization generated in the ferrodielectric layer, thereby adjusting emission characteristics of the emission layer.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: July 7, 2020
    Assignee: UNIVERSITY-INDUSTRY FOUNDATION (UIF), YONSEI UNIVERSITY
    Inventors: Cheolmin Park, Beomjin Jeong
  • Patent number: 10696585
    Abstract: A method of treating a glass substrate includes providing a glass substrate and strengthening the glass substrate by providing a mixed molten salt including a strengthening molten salt and an aluminum salt to the glass substrate.
    Type: Grant
    Filed: July 27, 2017
    Date of Patent: June 30, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hoikwan Lee, Seung Kim, Seungho Kim, Cheolmin Park, Eun-kyung Yeon, Jong-hoon Yeum, Jeongseok Lee
  • Patent number: 10619054
    Abstract: Provided are a low-reflective coating layer, a porous layer, a method of fabricating the porous layer, and an optical member including the porous layer. According to an embodiment, a low-reflective coating layer comprising a porous film having hollow sphere structures or bowl-like structures is provided. Each hollow sphere structure or bowl-like structure may have cavity formed therein. The hollow sphere structures or the bowl-like structures may be formed from spherical micelles, and each spherical micelle may be formed by self-assembling a supramolecular complex of a first compound block and a second compound block. In addition, the first compound block may constitute a backbone of the supramolecular chemical compound and the second compound block may constitute a side chain of the supramolecular. The second compound block may be non-covalent bonded to the first compound block.
    Type: Grant
    Filed: March 17, 2017
    Date of Patent: April 14, 2020
    Assignee: UNIVERSITY-INDUSTRY FOUNDATION (UIF), YONSEI UNIVERSITY
    Inventors: Cheolmin Park, Giyoung Song, Suk Man Cho
  • Patent number: 10622919
    Abstract: The present invention relates to a nano-porous thin film comprising a supramolecular structure having a skeleton, a first compound block and a second compound block including a functional group is self-assembled to form a spherical micelle, the first compound block constitutes a core of the spherical micelle, and the second compound block constitutes a shell of the spherical micelle, the first compound block is removed from the spherical micelle while the second compound is remaining so that the remaining second compound provide the skeleton of the supramolecular structure, the supramolecular structure comprises pores formed therein, and metal ions selectively bonded to the functional group.
    Type: Grant
    Filed: January 5, 2018
    Date of Patent: April 14, 2020
    Assignee: UNIVERSITY-INDUSTRY FOUNDATION (UIF), YONSEI UNIVERSITY
    Inventors: Cheolmin Park, Chanho Park, Giyoung Song, Sun Man Cho
  • Patent number: 10292234
    Abstract: Provided are an AC electroluminescence device includes a bottom electrode including a first electrode and a second electrode apart from each other, wherein AC power is applied between the first electrode and the second electrode; an electron injecting layer disposed on the bottom electrode; an emission layer disposed on the electron injecting layer; a dielectric layer disposed on the emission layer; a top electrode, which is disposed on the dielectric layer and includes a first portion opposing the first electrode and a second portion opposing the second electrode; a first emission region defined by a first overlapping region of the emission layer between the first portion of the top electrode and the first electrode of the bottom electrode; and a second emission region defined by a second overlapping region of the emission layer between the second portion of the top electrode and the second electrode of the bottom electrode.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: May 14, 2019
    Assignee: UIVERSITY-INDUSTRY FOUNDATION (UIF), YONSEI UNIVERSITY
    Inventors: Cheolmin Park, Sung Hwan Cho, Eui Hyuk Kim
  • Patent number: 10203581
    Abstract: Disclosed are an electrochromic photonic-crystal reflective display device and a method of manufacturing the same. The electrochromic photonic-crystal reflective display device includes a substrate having lower electrodes, a first solid polymer electrolyte thin film, a block copolymer photonic-crystal thin film, a second solid polymer electrolyte thin film, and upper electrodes. The first solid polymer electrolyte thin film is formed on the top of the substrate, and is made from a mixed solution including a polymer electrolyte and an ionic liquid. The block copolymer photonic-crystal thin film is formed on the top of the first solid polymer electrolyte thin film. The second solid polymer electrolyte thin film is formed on the top of the block copolymer photonic-crystal thin film, and is made from a mixed solution including a polymer electrolyte and an ionic liquid. The upper electrodes are formed on the top of the second solid polymer electrolyte thin film.
    Type: Grant
    Filed: October 10, 2016
    Date of Patent: February 12, 2019
    Assignee: INDUSTRY-ACADEMIC COOPERATION FOUNDATION, YONSEI UNIVERSITY
    Inventors: Cheolmin Park, Taejoon Park, Taehyun Park
  • Publication number: 20180297892
    Abstract: A method of manufacturing a window member includes performing a first reinforcement operation including performing a first ion-exchange treatment on an initial window member. The first ion-exchange treatment includes applying ion salts at a temperature equal to or greater than a first temperature of about 500° C. A stress relief operation includes performing a heat treatment and/or a salt treatment on the initial window member to which the first reinforcement operation is performed. A second reinforcement operation includes performing a second ion-exchange treatment on the initial window member to which the stress relief operation is performed.
    Type: Application
    Filed: March 20, 2018
    Publication date: October 18, 2018
    Inventors: HOIKWAN LEE, CHEOLMIN PARK, EUN-KYUNG YEON, JEONGSEOK LEE, SEUNGHO KIM
  • Publication number: 20180294745
    Abstract: The present invention relates to a nano-porous thin film comprising a supramolecular structure having a skeleton, a first compound block and a second compound block including a functional group is self-assembled to form a spherical micelle, the first compound block constitutes a core of the spherical micelle, and the second compound block constitutes a shell of the spherical micelle, the first compound block is removed from the spherical micelle while the second compound is remaining so that the remaining second compound provide the skeleton of the supramolecular structure, the supramolecular structure comprises pores formed therein, and metal ions selectively bonded to the functional group.
    Type: Application
    Filed: January 5, 2018
    Publication date: October 11, 2018
    Inventors: Cheolmin Park, Chanho Park, Giyoung Song, Sun Man Cho
  • Patent number: 9933567
    Abstract: Provided is a photonic crystal structure and the photonic crystal structure includes a polymer structure layer including a first polymer domain and a second polymer domain; and a photonic crystal material designed to be reversibly bonded to at least a portion of the first polymer domain to adjust a degree of swelling of the first polymer domain, thereby reflecting a light of a certain wavelength.
    Type: Grant
    Filed: September 7, 2017
    Date of Patent: April 3, 2018
    Assignee: UNIVERSITY-INDUSTRY FOUNDATION (UIF), YONSEI UNIVERSITY
    Inventors: Cheolmin Park, Han Sol Kang
  • Publication number: 20180067258
    Abstract: Provided is a photonic crystal structure and the photonic crystal structure includes a polymer structure layer including a first polymer domain and a second polymer domain; and a photonic crystal material designed to be reversibly bonded to at least a portion of the first polymer domain to adjust a degree of swelling of the first polymer domain, thereby reflecting a light of a certain wavelength.
    Type: Application
    Filed: September 7, 2017
    Publication date: March 8, 2018
    Inventors: Cheolmin Park, Han Sol Kang
  • Publication number: 20180037497
    Abstract: A method of treating a glass substrate includes providing a glass substrate and strengthening the glass substrate by providing a mixed molten salt including a strengthening molten salt and an aluminum salt to the glass substrate.
    Type: Application
    Filed: July 27, 2017
    Publication date: February 8, 2018
    Inventors: Hoikwan LEE, Seung KIM, Seungho KIM, Cheolmin PARK, Eun-kyung YEON, Jong-hoon YEUM, Jeongseok LEE
  • Publication number: 20170355860
    Abstract: Provided are a low-reflective coating layer, a porous layer, a method of fabricating the porous layer, and an optical member including the porous layer. According to an embodiment, a low-reflective coating layer comprising a porous film having hollow sphere structures or bowl-like structures is provided. Each hollow sphere structure or bowl-like structure may have cavity formed therein. The hollow sphere structures or the bowl-like structures may be formed from spherical micelles, and each spherical micelle may be formed by self-assembling a supramolecular complex of a first compound block and a second compound block. In addition, the first compound block may constitute a backbone of the supramolecular chemical compound and the second compound block may constitute a side chain of the supramolecular. The second compound block may be non-covalent bonded to the first compound block.
    Type: Application
    Filed: March 17, 2017
    Publication date: December 14, 2017
    Inventors: Cheolmin Park, Giyoung Song, Suk Man Cho
  • Publication number: 20170352308
    Abstract: Provided are a luminous member, a method of driving the luminous member, a non-volatile memory device, a sensor, a method of driving the sensor, and a display apparatus. The luminous member includes a first electrode; a second electrode facing the first electrode; an emission layer, which is disposed on a main surface of the first electrode and emits light by power applied between the first electrode and the second electrode; and a ferrodielectric layer disposed between the emission layer and the second electrode, wherein AC power applied to the luminous member is controlled based on polarity or magnitude of a residual polarization generated in the ferrodielectric layer, thereby adjusting emission characteristics of the emission layer.
    Type: Application
    Filed: May 31, 2017
    Publication date: December 7, 2017
    Inventors: Cheolmin Park, Beomjin Jeong
  • Publication number: 20170354016
    Abstract: Provided are an AC electroluminescence device includes a bottom electrode including a first electrode and a second electrode apart from each other, wherein AC power is applied between the first electrode and the second electrode; an electron injecting layer disposed on the bottom electrode; an emission layer disposed on the electron injecting layer; a dielectric layer disposed on the emission layer; a top electrode, which is disposed on the dielectric layer and includes a first portion opposing the first electrode and a second portion opposing the second electrode; a first emission region defined by a first overlapping region of the emission layer between the first portion of the top electrode and the first electrode of the bottom electrode; and a second emission region defined by a second overlapping region of the emission layer between the second portion of the top electrode and the second electrode of the bottom electrode.
    Type: Application
    Filed: May 30, 2017
    Publication date: December 7, 2017
    Inventors: Cheolmin Park, Sung Hwan Cho, Eui Hyuk Kim
  • Publication number: 20170336692
    Abstract: Disclosed are an electrochromic photonic-crystal reflective display device and a method of manufacturing the same. The electrochromic photonic-crystal reflective display device includes a substrate having lower electrodes, a first solid polymer electrolyte thin film, a block copolymer photonic-crystal thin film, a second solid polymer electrolyte thin film, and upper electrodes. The first solid polymer electrolyte thin film is formed on the top of the substrate, and is made from a mixed solution including a polymer electrolyte and an ionic liquid. The block copolymer photonic-crystal thin film is formed on the top of the first solid polymer electrolyte thin film. The second solid polymer electrolyte thin film is formed on the top of the block copolymer photonic-crystal thin film, and is made from a mixed solution including a polymer electrolyte and an ionic liquid. The upper electrodes are formed on the top of the second solid polymer electrolyte thin film.
    Type: Application
    Filed: October 10, 2016
    Publication date: November 23, 2017
    Inventors: Cheolmin PARK, Taejoon PARK, Taehyun PARK