Patents by Inventor Joo Ho YANG

Joo Ho YANG 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: 12295186
    Abstract: A display device includes a first electrode disposed on a substrate; a light emitting element disposed on the first electrode, the light emitting element being electrically connected to the first electrode; a second electrode disposed on the light emitting element, the second electrode being electrically connected to the light emitting element; a meta structure disposed on the second electrode, the meta structure overlapping the light emitting element; and a bank pattern disposed on the substrate, the bank pattern being spaced apart from the light emitting element.
    Type: Grant
    Filed: December 22, 2021
    Date of Patent: May 6, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byung Choon Yang, Sung Kook Park, Dae Ho Song, Hyung Il Jeon, Joo Woan Cho, Jin Woo Choi
  • Patent number: 12259521
    Abstract: Provided are a method and system of analyzing ingredients of an artificial rainfall for verification of a cloud seeding effect. As the method and system, which can verify an effect of the artificial rainfall in such a manner that a seeding material becomes different according to each temperature of clouds at a seeding altitude, water sampling from precipitation is performed before and after seeding, and thus the ingredients of a water sample are analyzed using each of a method of analyzing a heavy metal component and a method of analyzing a water-soluble ion component according to a cool cloud and a warm cloud so that whether or not there is a change in each concentration of the ingredients can be determined, are provided, an experiment for the artificial rainfall can more effectively be performed.
    Type: Grant
    Filed: February 28, 2022
    Date of Patent: March 25, 2025
    Assignee: National Institute of Meteorological Sciences
    Inventors: Hae Jung Koo, Ki Ho Chang, Joo Wan Cha, Hyunjun Hwang, Minhoo Kim, Woon Seon Jung, Jung Mo Ku, Ji Man Park, Miloslav Belorid, Sang Hee Chae, Ha-Young Yang, Chulkyu Lee, Ji Min Woo, Eun Hye Sim, Chang Hee Kang, Jung Min Song
  • Patent number: 12249284
    Abstract: Provided are a pixel circuit and a display device having the pixel circuit. The pixel circuit includes an organic light emitting diode, a switching transistor, a storage capacitor, and a driving transistor. The switching transistor is turned off when a scan signal has a first voltage and turned on when the scan signal has a second voltage. The storage capacitor stores a data voltage when the switching transistor is turned on in response to the scan signal. The driving transistor is electrically connected with the organic light emitting diode between a high power supply voltage and a low power supply voltage to provide a driving current to the organic light emitting diode, and includes a first bottom gate electrode that is provided with the first voltage. The driving current corresponds to the data voltage stored in the storage capacitor.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: March 11, 2025
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jung-Mi Choi, Young-In Hwang, Eung Taek Kim, Yong Ho Yang, Joo Hyeon Jo, Seong Baik Chu
  • Publication number: 20250073975
    Abstract: The embodiments relate to a heat-shrinkable film and a process for preparing the same. The heat-shrinkable film comprises a mixed resin, wherein the mixed resin comprises a copolymerized polyester-based resin in which a diol and a dicarboxylic acid are copolymerized; and a polybutylene terephthalate-based resin, and, when a specimen of the heat-shrinkable film having a width of 15 mm, a length of 110 mm, and a thickness of 45 ?m is immersed in hot water at 70° C. for 60 seconds to measure shrinkage stress, the development time of the initial shrinkage stress is 20 seconds or shorter. The heat-shrinkable film according to the embodiment comprises a mixed resin having a specific composition, wherein the development time of the initial shrinkage stress is controlled.
    Type: Application
    Filed: July 18, 2024
    Publication date: March 6, 2025
    Inventors: Joo Ho YANG, Il Ho NOH, Yong Deuk KIM
  • Patent number: 12228461
    Abstract: A temperature sensing device including a first temperature sensor having a first resistor and a first capacitor and generating a first voltage applied to at least one of the first resistor or the first capacitor based on a first clock signal and a second clock signal generated by delaying the first clock signal, a second temperature sensor having a second resistor and a second capacitor and generating a second voltage applied to at least one of the second resistor or the second capacitor based on the first and second clock signals, a controller generating code data based on the first voltage and the second voltage and generating a control signal based on the code data, and a delay locked loop circuit delaying the first clock signal based on the control signal to generate the second clock signal may be provided.
    Type: Grant
    Filed: December 27, 2021
    Date of Patent: February 18, 2025
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung Hyun Park, Kwang Ho Kim, Joo Seong Kim, Jun Hyeok Yang
  • Publication number: 20250040343
    Abstract: A display device includes a display panel including an antireflection layer on a light emitting element layer which includes a first pixel defining layer in which an opening defining a light emitting area of a first pixel is defined, and a second pixel defining layer in which an opening defining a light emitting area of a second pixel is defined. The antireflection layer includes first and second light blocking layers respectively overlapping the first and second pixel defining layers, and includes a first gap defined by a length of a predetermined direction from an edge of the opening to an edge of an opening of the first light blocking layer, and a second gap defined by a length from an edge of the opening to an edge of an opening of the second light blocking layer in the predetermined direction. The first gap is less than the second gap.
    Type: Application
    Filed: October 15, 2024
    Publication date: January 30, 2025
    Inventors: Sun Ho KIM, Sun Hee LEE, Gun Hee KIM, Tae Hoon YANG, Seung Chan LEE, Joo Hee JEON
  • Publication number: 20240279389
    Abstract: A polyester film according to one embodiment has improved thermal properties and chemical properties by controlling the crystallinity of a copolymerized polyester and, particularly, exhibits excellent shrinkage per unit temperature as well as adhesiveness by means of a solvent, and thus is suitable for a heat-shrinking process and a seaming process. Therefore, the polyester film according to said embodiment can be usefully applied, as a heat-shrinkable label or packaging material, to containers of various products comprising drinks or food.
    Type: Application
    Filed: April 27, 2022
    Publication date: August 22, 2024
    Inventors: Chul Kyu KIM, Yong Deuk KIM, Joo Ho YANG
  • Patent number: 12037449
    Abstract: Embodiments relate to a polyester film, preparation method thereof and method for reproducing polyethyleneterephthalate (PET) container using same, the crystallization temperature (Tc) of the polyester film is not measured or is 70° C. to 130° C., as measured by differential scanning calorimetry, whereby it is possible to easily control the crystallinity. Accordingly, the polyester film has excellent shrinkage characteristics and recyclability, and clumping rarely occurs even if it is dried at high temperatures for a long period of time in the regeneration process.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: July 16, 2024
    Assignees: SK MICROWORKS CO., LTD., SK MICROWORKS AMERICA, INC.
    Inventors: Chul Kyu Kim, Eugene Jung, Yong Deuk Kim, Joo Ho Yang, Hyuk Soo Lee
  • Publication number: 20240110031
    Abstract: The embodiments relate to a polyester film and a process for regenerating a polyester container using the same, which not only solve the environmental problems by improving the recyclability of polyester containers, but also are capable of enhancing the yield and productivity. The polyester film comprises a first layer comprising a first resin comprising a diol component and a dicarboxylic acid component; and a second layer laminated on one side of the first layer and comprising a second resin different from the first resin, wherein when the polyester film is cut with a polyethylene terephthalate container to form flakes and the flakes are thermally treated at a temperature of 200° C. to 220° C. for 60 minutes to 120 minutes, the clumping fraction is 8% or less.
    Type: Application
    Filed: December 14, 2023
    Publication date: April 4, 2024
    Applicants: SK microworks Co., Ltd., SK microworks America, Inc.
    Inventors: Chul Kyu KIM, Yongdeuk KIM, Joo Ho YANG
  • Publication number: 20230348662
    Abstract: A polyester film according to one embodiment uniformly shrinks during a heat-shrinking process as the shrinkage rate is adjusted for each temperature range, and thus after shrinkage the polyester film can be attached to a container without any defects in external appearance such as distortion or curling. Therefore, the polyester film according to said embodiment can be usefully applied, as a heat-shrinkable label or packaging material, to containers of various products comprising drinks or food.
    Type: Application
    Filed: September 30, 2021
    Publication date: November 2, 2023
    Inventors: Joo Ho YANG, Yong Deuk KIM, Chul Kyu KIM
  • Publication number: 20230331942
    Abstract: A polyester film according to an embodiment is characterized in that the shrinkage properties in a direction perpendicular to a main shrinkage direction are adjusted under certain heat treatment conditions, and thus further deformation of the polyester film can be suppressed even when the polyester film goes through a harsh retort process after being tightly adhered to a container by means of heat shrinkage. Thus, the polyester film according to the embodiment can be effectively applied, as a heat-shrinkable label or packing material, to containers of various products including retort food.
    Type: Application
    Filed: September 30, 2021
    Publication date: October 19, 2023
    Inventors: Joo Ho YANG, Yong Deuk KIM, Chul Kyu KIM
  • Patent number: 11548996
    Abstract: The embodiments relate to a polyester film, which comprises a copolymerized polyester resin comprising a diol component and a dicarboxylic acid component and has a heat shrinkage rate of 30% or more in the main shrinkage direction upon thermal treatment at a temperature of 80° C. for 10 seconds and a melting point of 170° C. or higher as measured by differential scanning calorimetry, which not only solve the environmental problems by improving the recyclability of the polyester container, but also are capable of enhancing the yield and productivity, and a process for regenerating a polyester container using the same.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: January 10, 2023
    Assignees: SKC CO., LTD., SKC INC.
    Inventors: Dae Yong Shin, Yong Deuk Kim, Jung Kyu Lee, Jaehyong Son, Eugene Jung, Chul Kyu Kim, Joo Ho Yang
  • Publication number: 20230002574
    Abstract: The polyester film according to the embodiment prepared while the crystallinity of a copolymerized polyester film is controlled can be improved in thermal properties and chemical properties. Specifically, the polyester film has not only an excellent shrinkage rate with respect to temperature, but also excellent adhesive strength by a solvent even when applied to gravure printing, UV curing printing, and VSOP printing, making it suitable for a heat shrinkage process and a seaming process. In addition, the polyester film can be applied to a recycling process since it has an appropriate change in crystals during washing with an aqueous solution of NaOH, and the generation of fusion is suppressed even upon prolonged high-temperature drying.
    Type: Application
    Filed: May 27, 2022
    Publication date: January 5, 2023
    Inventors: Joo Ho YANG, Chul Kyu KIM, Yong Deuk KIM, Seung Kyun KIM
  • Patent number: 11466135
    Abstract: The embodiments relate to a polyester film, to a process for preparing the same, and to a process for regenerating a polyethylene terephthalate (PET) container using the same. The polyester film has excellent seaming characteristics and recyclability by virtue of controlled crystallinity, whereby clumping rarely occurs even if it is thermally treated for a long period of time in the regeneration process.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: October 11, 2022
    Assignees: SKC CO., LTD., SKC INC.
    Inventors: Joo Ho Yang, Chul Kyu Kim, Yong Deuk Kim
  • Publication number: 20220235187
    Abstract: The embodiments relate to a polyester film, to a process for preparing the same, and to a process for regenerating a polyethylene terephthalate (PET) container using the same. The polyester film has excellent seaming characteristics and recyclability by virtue of controlled crystallinity, whereby clumping rarely occurs even if it is thermally treated for a long period of time in the regeneration process.
    Type: Application
    Filed: May 3, 2021
    Publication date: July 28, 2022
    Inventors: Joo Ho YANG, Chul Kyu KIM, Yong Deuk KIM
  • Patent number: 11396577
    Abstract: Embodiments relate to a polyester-based film and a process for regenerating a polyester-based container using the same, which not only solve the environmental problems by enhancing the recyclability of polyester-based containers but also are capable of enhancing the quality, yield, and productivity. When the polyester-based film is cut into a size of 1 cm in width and 1 cm in length, immersed in an aqueous solution of sodium hydroxide (NaOH) having a concentration of 1% by weight, and stirred for 15 minutes at 85° C. at a speed of 240 m/minute, the average particle size of the component of the printing layer separated from the base layer satisfies 15 ?m or more. Thus, it is possible to enhance the quality of the regenerated polyester-based chips produced from the polyester-based container provided with the polyester-based film.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: July 26, 2022
    Assignees: SKC CO., LTD., SKC INC.
    Inventors: Chul Kyu Kim, Yong Deuk Kim, Joo Ho Yang, Eugene Jung, Hyuk Soo Lee
  • Publication number: 20220098377
    Abstract: Embodiments relate to a polyester-based film and a process for regenerating a polyester-based container using the same, which not only solve the environmental problems by enhancing the recyclability of polyester-based containers but also are capable of enhancing the quality, yield, and productivity. When the polyester-based film is cut into a size of 1 cm in width and 1 cm in length, immersed in an aqueous solution of sodium hydroxide (NaOH) having a concentration of 1% by weight, and stirred for 15 minutes at 85° C. at a speed of 240 m/minute, the average particle size of the component of the printing layer separated from the base layer satisfies 15 ?m or more. Thus, it is possible to enhance the quality of the regenerated polyester-based chips produced from the polyester-based container provided with the polyester-based film.
    Type: Application
    Filed: October 22, 2020
    Publication date: March 31, 2022
    Inventors: Chul Kyu KIM, Yong Deuk KIM, Joo Ho YANG, Eugene JUNG, Hyuk Soo LEE
  • Publication number: 20220002477
    Abstract: Embodiments relate to a polyester film, preparation method thereof and method for reproducing polyethyleneterephthalate (PET) container using same, the crystallization temperature (Tc) of the polyester film is not measured or is 70° C. to 130° C., as measured by differential scanning calorimetry, whereby it is possible to easily control the crystallinity. Accordingly, the polyester film has excellent shrinkage characteristics and recyclability, and clumping rarely occurs even if it is dried at high temperatures for a long period of time in the regeneration process.
    Type: Application
    Filed: October 29, 2020
    Publication date: January 6, 2022
    Inventors: Chul Kyu KIM, Eugene JUNG, Yong Deuk KIM, Joo Ho YANG, Hyuk Soo LEE
  • Patent number: 11155691
    Abstract: Embodiments relate to a process for regenerating a polyester container and a polyester film to be used therein, which not only solve the environmental problems by improving the recyclability of polyester containers, but also are capable of enhancing the quality, yield, and productivity. The process for regenerating a polyester container comprises providing the polyester container and a heat-shrunken polyester film that wraps at least part of the polyester container; crushing the polyester container and the heat-shrunken film to obtain flakes; and thermally treating the flakes to produce regenerated polyester chips, wherein when the flakes are thermally treated at a temperature of 200° C. to 220° C.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: October 26, 2021
    Assignees: SKC CO., LTD., SKC INC.
    Inventors: Chul Kyu Kim, Yongdeuk Kim, Joo Ho Yang
  • Publication number: 20210122897
    Abstract: The embodiments relate to a. polyester film and a process for regenerating a polyester container using the same, which not only solve the environmental problems by improving the recyclability of polyester containers, but also are capable of enhancing the yield and productivity. The polyester film comprises a first layer comprising a first resin comprising a diol component and a dicarboxylic acid component; and a second layer laminated on one side of the first layer and comprising a second resin different from the first resin, wherein when the polyester film is cut with a polyethylene terephthalate container to form flakes and the flakes are thermally treated at a temperature of 200° C. to 220° C. for 60 minutes to 120 minutes, the clumping fraction is 8% or less.
    Type: Application
    Filed: November 18, 2019
    Publication date: April 29, 2021
    Inventors: Chul Kyu KIM, Yongdeuk KIM, Joo Ho YANG