Patents by Inventor Yeon-keun Lee

Yeon-keun Lee 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: 11950502
    Abstract: Provided is a novel compound capable of improving the luminous efficiency, stability and life span of a device, an organic electric element using the same, and an electronic device thereof.
    Type: Grant
    Filed: April 17, 2021
    Date of Patent: April 2, 2024
    Assignee: DUK SAN NEOLUX CO., LTD.
    Inventors: Hyoung Keun Park, Yun Suk Lee, Ki Ho So, Jong Gwang Park, Yeon Seok Jeong, Jung Hwan Park, Sun Hee Lee, Hak Young Lee
  • Publication number: 20240088432
    Abstract: An embodiment sulfur dioxide-based inorganic electrolyte is provided in which the sulfur dioxide-based inorganic electrolyte is represented by a chemical formula M·(A1·Cl(4-x)Fx)z·ySO2. In this formula, M is a first element selected from the group consisting of Li, Na, K, Ca, and Mg, A1 is a second element selected from the group consisting of Al, Fe, Ga, and Cu, x satisfies a first equation 0?x?4, y satisfies a second equation 0?y?6, and z satisfies a third equation 1?z?2.
    Type: Application
    Filed: April 12, 2023
    Publication date: March 14, 2024
    Inventors: Kyu Ju Kwak, Won Keun Kim, Eun Ji Kwon, Samuel Seo, Yeon Jong Oh, Kyoung Han Ryu, Dong Hyun Lee, Han Su Kim, Ji Whan Lee, Seong Hoon Choi, Seung Do Mun
  • Publication number: 20240059934
    Abstract: A pressure-sensitive adhesive composition for forming a pressure-sensitive adhesive layer, which is applied to a flexible device, thereby effectively responding to repeated deformation and recovery, causing no defects (for example, observation of deformation traces and the like) before and after deformation, having excellent cuttability and workability, causing no lifting, delamination, and/or bubble generation, and exhibiting a transmittance at a level capable of omitting a polarizing plate is provided.
    Type: Application
    Filed: April 15, 2022
    Publication date: February 22, 2024
    Applicant: LG CHEM, LTD.
    Inventors: Seung Yeon RYU, Hyun Cheol KIM, Yeon Keun LEE, Ji Young KIM
  • Patent number: 11802209
    Abstract: The present application relates to an adhesive composition, an adhesive film, an adhesive optical filter and a display device.
    Type: Grant
    Filed: February 18, 2021
    Date of Patent: October 31, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Mun Kyu Joo, Deok Hwan Kim, Yeon Keun Lee, Minhyuk Yun, Bongjun Kim
  • Patent number: 11745641
    Abstract: A vehicle lamp and a method for manufacturing a vehicle lamp. The vehicle lamp includes a lower substrate, a fluorescent film and a color filter stacked in this order. The fluorescent film and the color filter include polydimethylsiloxane (PDMS).
    Type: Grant
    Filed: October 31, 2019
    Date of Patent: September 5, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Junhaeng Lee, Deok Hwan Kim, Yeon Keun Lee
  • Patent number: 11740551
    Abstract: The present application relates to a method for producing a substrate which includes a step of exposing and developing a photosensitive resin composition layer formed on a surface of a substrate base layer to produce spacers. The method for producing a substrate of the present application can uniformly form spacers having a height according to a desired cell gap and can also freely control the height of the spacers.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: August 29, 2023
    Inventors: Jun Haeng Lee, Yeon Keun Lee, Jung Doo Kim, Han Min Seo, Cheol Ock Song, Nam Seok Bae
  • Publication number: 20220403136
    Abstract: The present specification relates to a composition for forming an optical film comprising a compound represented by Chemical Formula 1 and a binder resin, an optical film, and a display device comprising the same.
    Type: Application
    Filed: March 4, 2021
    Publication date: December 22, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Bongjun KIM, Sang Pil MOON, Mun Kyu JOO, Duy Hieu LE, Yeon Keun LEE, Hoyong LEE
  • Publication number: 20220359850
    Abstract: The present application relates to a circularly polarizing plate. The present application can provide a circularly polarizing plate which can improve a reflection color sense by using a retardation film having flat dispersion characteristics. In addition, the present application can provide an OLED device comprising the circularly polarizing plate.
    Type: Application
    Filed: October 27, 2020
    Publication date: November 10, 2022
    Applicant: LG CHEM, LTD.
    Inventor: Yeon Keun LEE
  • Publication number: 20220282092
    Abstract: The present application relates to an adhesive composition, an adhesive film, an adhesive optical filter and a display device.
    Type: Application
    Filed: February 18, 2021
    Publication date: September 8, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Mun Kyu JOO, Deok Hwan KIM, Yeon Keun LEE, Minhyuk YUN, Bongjun KIM
  • Publication number: 20220282093
    Abstract: The present specification relates to an optical film, and a display device comprising the same.
    Type: Application
    Filed: March 4, 2021
    Publication date: September 8, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Bongjun KIM, Ji Hoon PARK, Yeon Keun LEE, Mun Kyu JOO, Deok Hwan KIM
  • Patent number: 11262636
    Abstract: A transmittance-variable film having a double-cell structure or a single-cell structure capable of suppressing formation of bubbles inside a liquid crystal layer or at the interface between a base film and a pressure-sensitive adhesive layer under high-temperature and high-humidity reliability conditions is provided. An exemplary transmittance-variable film can be applied to various applications, including various construction or automotive materials that require control of transmittance, or eyewear, such as augmented reality experience or sports goggles, sunglasses or helmets.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: March 1, 2022
    Inventors: Jung Doo Kim, Hyun Jun Lee, Yeon Keun Lee, Joo Hyun Lee, Dong Hyun Oh
  • Patent number: 11175558
    Abstract: A liquid crystal cell, a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: November 16, 2021
    Inventors: Deok Hwan Kim, Yeon Keun Lee, Jung Doo Kim, Jun Haeng Lee
  • Publication number: 20210336230
    Abstract: Provided is a circularly polarizing plate capable of improving the tone of reflective color sense by using a retardation film having flat dispersion characteristics; and an OLED device comprising the circularly polarizing plate.
    Type: Application
    Filed: November 4, 2019
    Publication date: October 28, 2021
    Inventors: Yeon Keun LEE, Hyun Hee SON, Mun Kyu JOO, Deok Hwan KIM, Dong Choon KIM
  • Publication number: 20210325590
    Abstract: Provided is a circularly polarizing plate capable of improving a reflection color by using a retardation film with flat dispersion characteristics, and an OLED device comprising the circularly polarizing plate.
    Type: Application
    Filed: November 4, 2019
    Publication date: October 21, 2021
    Inventors: Yeon Keun LEE, Hyun Hee SON, Mun Kyu JOO, Deok Hwan KIM, Dong Choon KIM
  • Patent number: 11131897
    Abstract: A liquid crystal cell and a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: September 28, 2021
    Inventors: Deok Hwan Kim, Yeon Keun Lee, Jung Doo Kim, Jun Haeng Lee
  • Publication number: 20210221279
    Abstract: A vehicle lamp and a method for manufacturing a vehicle lamp. The vehicle lamp includes a lower substrate, a fluorescent film and a color filter stacked in this order. The fluorescent film and the color filter include polydimethylsiloxane (PDMS).
    Type: Application
    Filed: October 31, 2019
    Publication date: July 22, 2021
    Inventors: Junhaeng LEE, Deok Hwan KIM, Yeon Keun LEE
  • Publication number: 20210115225
    Abstract: A blue light cut film including a diazaporphyrin-based compound of Chemical Formula 1, having absorption in a 380 nm to 450 nm range, and having a main absorption peak in a 560 nm to 600 nm range, wherein the main absorption peak has a full width at half the peak maximum of 30 nm or less.
    Type: Application
    Filed: October 31, 2019
    Publication date: April 22, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Mun Kyu JOO, Yeon Keun LEE, Junhaeng LEE, Deok Hwan KIM
  • Publication number: 20210116736
    Abstract: A liquid crystal cell, a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices, such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.
    Type: Application
    Filed: December 20, 2018
    Publication date: April 22, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Deok Hwan Kim, Yeon Keun Lee, Jung Doo Kim, Jun Haeng Lee
  • Publication number: 20210080768
    Abstract: A liquid crystal cell and a manufacturing method thereof and a use thereof are provided in the present disclosure. The liquid crystal cell is in a normally transparent mode, and has excellent transmittance-variable characteristics in a transparent mode and a scattering mode and excellent haze characteristics in the scattering mode. Such liquid crystal cell may be applied to various light modulation devices such as a smart window, a window protective film, a flexible display element, a light shielding plate for transparent displays, an active retarder for 3D image displays or a viewing angle control film.
    Type: Application
    Filed: December 20, 2018
    Publication date: March 18, 2021
    Applicant: LG Chem, Ltd.
    Inventors: Deok Hwan Kim, Yeon Keun Lee, Jung Doo Kim, Jun Haeng Lee
  • Publication number: 20200409253
    Abstract: The present application relates to a method for producing a substrate which includes a step of exposing and developing a photosensitive resin composition layer formed on a surface of a substrate base layer to produce spacers. The method for producing a substrate of the present application can uniformly form spacers having a height according to a desired cell gap and can also freely control the height of the spacers.
    Type: Application
    Filed: November 23, 2018
    Publication date: December 31, 2020
    Applicant: LG Chem, Ltd.
    Inventors: Jun Haeng Lee, Yeon Keun Lee, Jung Doo Kim, Han Min Seo, Cheol Ock Song, Nam Seok Bae