Patents by Inventor Dong Hwan Ryu

Dong Hwan Ryu 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: 20250135701
    Abstract: A method of manufacturing an encapsulation film, the method including preparing a solventless type encapsulation composition by mixing an encapsulation resin and a moisture adsorbent in a single step; and preparing an encapsulation layer by extruding the encapsulation composition at a temperature of 90° C. or more, a method of manufacturing an organic electronic device manufacturing method using same, and provides a method of manufacturing an encapsulation film having a structure capable of blocking moisture or oxygen flowing into an organic electronic device from the outside, and enabling long-term reliability of the organic electronic device to be ensured.
    Type: Application
    Filed: December 1, 2022
    Publication date: May 1, 2025
    Inventors: Kwang Hui CHOI, Beom Doo SEO, Dong Hwan RYU, Jae Seol RYU, Won Gu CHOI, Jhin Yeong YOON
  • Publication number: 20240416570
    Abstract: An encapsulation film, a manufacturing method therefor, an organic electronic device comprising same, and a method for manufacturing an organic electronic device by using same, which provides an encapsulation film that has a structure capable of blocking moisture or oxygen flowing into an organic electronic device from the outside, and long-term reliability of the organic electronic device can be ensured. The encapsulation film includes an encapsulation layer that is a cured product of an encapsulation composition, wherein the encapsulation composition includes an encapsulation resin and a moisture adsorbent, and the encapsulation layer is a single layer and includes a first region, a second region, and a third region in which the concentrations of the moisture adsorbent are different according to the thickness direction.
    Type: Application
    Filed: December 1, 2022
    Publication date: December 19, 2024
    Inventors: Beom Doo SEO, Jae Seol RYU, Kwang Hui CHOI, Jhin Yeong YOON, Dong Hwan RYU, Yern Seung KIM, Kyung Inn KIM, Ho Sung KANG
  • Publication number: 20240407227
    Abstract: The present application relates to a back plate film. The present application provides a back plate film for an under-display camera in which a front camera of a mobile phone can capture a subject without image distortion. The back plate film of the present application can be usefully used in, for example, an OLED panel.
    Type: Application
    Filed: November 25, 2022
    Publication date: December 5, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Jong Pil Roh, Dong Hwan Ryu, Jin Hoo Kim
  • Publication number: 20240406299
    Abstract: The present application relates to a back plate film. The present application provides a back plate film for an under-display camera in which a front camera of a mobile phone can capture a subject without image distortion. The back plate film of the present application can be usefully used in, for example, an OLED panel.
    Type: Application
    Filed: November 25, 2022
    Publication date: December 5, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Jin Hoo Kim, Dong Hwan Ryu, Jong Pil Roh
  • Patent number: 12089436
    Abstract: Provided is an encapsulation film, an organic electronic device comprising the same, and a method for manufacturing an organic electronic device comprising the same. The encapsulation film comprises an encapsulation layer comprising a moisture adsorbent, and a metal mesh layer formed on the encapsulation layer.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: September 10, 2024
    Assignee: LG Chem, Ltd.
    Inventors: Jae Seol Ryu, Dong Hwan Ryu, Moon Cheol Shin, Se Hyun Jang, Yeong Bong Mok
  • Publication number: 20210328190
    Abstract: Provided is an encapsulation film, an organic electronic device comprising the same, and a method for manufacturing an organic electronic device comprising the same. The encapsulation film comprises an encapsulation layer comprising a moisture adsorbent, and a metal mesh layer formed on the encapsulation layer.
    Type: Application
    Filed: August 16, 2019
    Publication date: October 21, 2021
    Inventors: Jae Seol RYU, Dong Hwan RYU, Moon Cheol SHIN, Se Hyun JANG, Yeong Bong MOK
  • Patent number: 11081669
    Abstract: The present application relates to an encapsulation film, a method for producing the same, an organic electronic device comprising the same, and a method for preparing an organic electronic device using the same, which allows forming a structure capable of blocking moisture or oxygen introduced into an organic electronic device from the outside, and can effectively release heat accumulated inside the organic electronic device and prevent occurrence of bright spots of the organic electronic device.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: August 3, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Ho Joon Yoo, Dong Hwan Ryu, Se Ho Shin, Moon Cheol Shin, Whoon Jeong, Jae Seol Ryu
  • Publication number: 20210083224
    Abstract: The present application relates to an encapsulation film, a method for producing the same, an organic electronic device comprising the same, and a method for preparing an organic electronic device using the same, which allows forming a structure capable of blocking moisture or oxygen introduced into an organic electronic device from the outside, and can effectively release heat accumulated inside the organic electronic device and prevent occurrence of bright spots of the organic electronic device.
    Type: Application
    Filed: June 11, 2018
    Publication date: March 18, 2021
    Inventors: Ho Joon YOO, Dong Hwan RYU, Se Ho SHIN, Moon Cheol SHIN, Whoon JEONG, Jae Seol RYU
  • Patent number: 10871677
    Abstract: The present disclosure relates to a wide color gamut film, a composition for preparing the same, a polarizing plate including the same, and a liquid crystal display including the polarizing plate. More specifically, the present disclosure relates to a wide color gamut film capable of improving color gamut by increasing color purity and exhibiting excellent physical and optical characteristics, a composition for preparing the same, a polarizing plate including the same, and a liquid crystal display including the polarizing plate.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: December 22, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Han Na Lee, Byung Min Lee, Kyung Ki Hong, Yeong Rae Chang, Dong Hwan Ryu
  • Publication number: 20200091460
    Abstract: The present application relates to an encapsulation film, a method for producing the same, an organic electronic device comprising the same, and a method for preparing an organic electronic device using the same, which allows forming a structure capable of blocking moisture or oxygen introduced into an organic electronic device from the outside, and can effectively release heat accumulated inside the organic electronic device and prevent occurrence of bright spots of the organic electronic device.
    Type: Application
    Filed: June 11, 2018
    Publication date: March 19, 2020
    Inventors: Ho Joon YOO, Dong Hwan RYU, Se Ho SHIN, Moon Cheol SHIN, Whoon JEONG, Jae Seol RYU
  • Publication number: 20180373096
    Abstract: The present disclosure relates to a wide color gamut film, a composition for preparing the same, a polarizing plate including the same, and a liquid crystal display including the polarizing plate. More specifically, the present disclosure relates to a wide color gamut film capable of improving color gamut by increasing color purity and exhibiting excellent physical and optical characteristics, a composition for preparing the same, a polarizing plate including the same, and a liquid crystal display including the polarizing plate.
    Type: Application
    Filed: July 6, 2016
    Publication date: December 27, 2018
    Inventors: Han Na LEE, Byung Min LEE, Kyung Ki HONG, Yeong Rae CHANG, Dong Hwan RYU
  • Publication number: 20130121022
    Abstract: A durability-enhanced optical sheet and an edge-type backlight unit having the optical sheet. The edge-type backlight unit includes a light source unit that includes a plurality of light sources, a light guide unit that is disposed adjacently to the light source unit and controls a path of light generated from the light source unit, a diffusion sheet disposed on the light guide plate, and an optical sheet that is disposed on the diffusion sheet and includes a lens unit and a non-lens unit, wherein the non-lens unit includes a first base unit, a second base unit, and a bonding layer for bonding the first and second base units. The optical sheet includes two base unit layers, and thus, sheet waves that can be caused due to heat can be prevented, modulus can be increased, and durability of the optical sheet can be enhanced.
    Type: Application
    Filed: March 10, 2011
    Publication date: May 16, 2013
    Applicant: LG CHEM, LTD.
    Inventors: Kwang-Seung Park, Hang-Suk Choi, Jin-Kyu Kim, Dong-Hwan Ryu, Min-Kyun Kim, Ji Hyung Lee, Sang-choll Han, Jin-Hyun Kim
  • Patent number: 8309276
    Abstract: The present invention discloses a process for preparing catalyst solution for a membrane-electrode assembly in a fuel cell, which comprises the steps of a) mixing a catalyst solution (Solution A) wherein catalyst particles are dispersed in water and an ion conductive resin solution (Solution B) wherein an ion conductive resin is dissolved in water, low boiling point organic solvent or a mixture thereof, to form a dispersion; b) mixing the dispersion obtained from step a) with functional additive dissolved in high boiling point solvent or a mixture of low boiling point solvent arid water (Solution C) to prepare catalyst ink dispersion; and c) aging the catalyst ink dispersion obtained from step b).
    Type: Grant
    Filed: November 6, 2007
    Date of Patent: November 13, 2012
    Assignee: Hanwha Chemical Corporation
    Inventors: Byungchul Jang, Young Taek Kim, Jung-Eun Yang, Youngsu Jiong, Dong Hwan Ryu, Min-Ho Seo
  • Publication number: 20100330463
    Abstract: The present invention discloses a process for preparing catalyst solution for a membrane-electrode assembly in a fuel cell, which comprises the steps of a) mixing a catalyst solution (Solution A) wherein catalyst particles are dispersed in water and an ion conductive resin solution (Solution B) wherein an ion conductive resin is dissolved in water, low boiling point organic solvent or a mixture thereof, to form a dispersion; b) mixing the dispersion obtained from step a) with functional additive dissolved in high boiling point solvent or a mixture of low boiling point solvent arid water (Solution C) to prepare catalyst ink dispersion; and c) aging the catalyst ink dispersion obtained from step b).
    Type: Application
    Filed: November 6, 2007
    Publication date: December 30, 2010
    Applicant: HANWHA CHEMICAL CORPORATION
    Inventors: Byungchul Jang, Young Taek Kim, Jung-Eun Yang, Youngsu Jiong, Dong Hwan Ryu, Min-Ho Seo
  • Publication number: 20090202885
    Abstract: The present invention relates to a porous electrode used in a polymer electrolyte membrane fuel cell, and more particularly to a method of preparing a membrane-electrode assembly by forming a self-stand electrode layer by coating catalyst ink on a non-conductive substrate having a macropore and then joining it to a polymer electrolyte membrane. The porous self-stand electrode according to the present invention allows moisture and gas to be smoothly discharged and inflowed in a high current density operation region to improve the performance of a fuel cell, and can be freely cutted to simplify the preparation process of the membrane-electrode assembly.
    Type: Application
    Filed: December 3, 2008
    Publication date: August 13, 2009
    Inventors: Young Taek Kim, Min-ho Seo, Byungchul Jang, Dong Hwan Ryu, Jung-Eun Yang, Youngsu Jiong