Patents by Inventor Yeong-Rae Chang

Yeong-Rae Chang 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: 20230420644
    Abstract: Provided is a method for manufacturing an electrode for an electrochemical device comprising (S1) coating a slurry comprising a binder polymer and a conductive material on at least one surface of a current collector and drying to form an attachment enhancing layer; (S2) preparing a free-standing dry electrode film comprising a dry electrode active material and a dry binder; and (S3) stacking the free-standing dry electrode film on the attachment enhancing layer and applying heat and pressure in order to allow the binder polymer to permeate into a surface layer of the free-standing dry electrode film in contact with the attachment enhancing layer in order to adhere the free-standing dry electrode film to the attachment enhancing layer. Further provided are an electrode and a lithium secondary battery including the same.
    Type: Application
    Filed: February 8, 2022
    Publication date: December 28, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Min-Soo Kim, Su-Jin Kim, Jung-Hyun Seo, Yeong-Rae Chang
  • Patent number: 11760647
    Abstract: Provided is a hydrophobic silica aerogel precursor, and a hydrophobic silica aerogel produced using the same. In the methods, a linear silane crosslinking agent containing a PEG-derived unit is introduced when preparing a hydrophobic aerogel precursor, resulting in the production of a hydrophobic silica aerogel having improved high-temperature thermal stability and improved physical properties.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: September 19, 2023
    Assignee: LG Chem, Ltd.
    Inventors: Hee Jung Choi, Se Hyun Kwon, Yeong Rae Chang, Seok Hoon Jang
  • Patent number: 11680172
    Abstract: The present invention relates to a photocurable coating composition for forming a low refractive layer, a method for preparing an antireflection film using the photocurable coating composition, and an anti-reflective film prepared by using the photocurable coating composition. According to the present invention, a low refractive layer is formed of a photocurable coating composition containing two or more types of photo-polymerizable compounds, a photoinitiator, surface-treated hollow inorganic nanoparticles, and surface-treated solid inorganic nanoparticles.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: June 20, 2023
    Assignee: LG Chem, Ltd.
    Inventors: Jin Seok Byun, Jae Young Kim, Boo Kyung Kim, Seok Hoon Jang, Yeong Rae Chang
  • Patent number: 11681154
    Abstract: A wearable device which is lighter, relatively safer at the time of breakage, and smaller than a wearable device having a lens substrate that is a glass substrate.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: June 20, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Hye Min Kim, Yong Suk Kim, Boo Kyung Kim, Yeong Rae Chang, Bu Gon Shin, So Young Choo
  • Patent number: 11648710
    Abstract: A method for manufacturing a plastic substrate having excellent thickness uniformity, and a plastic substrate having excellent thickness uniformity manufactured thereby.
    Type: Grant
    Filed: November 2, 2018
    Date of Patent: May 16, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Yong Suk Kim, Hye Min Kim, Boo Kyung Kim, Yeong Rae Chang, Young Tae Kim, Ji Young Kim
  • Patent number: 11614567
    Abstract: The present invention relates to a low refractive layer and an anti-reflective film comprising the same. The low refractive layer can exhibit excellent optical properties such as a low reflectance and a high light transmittance, and excellent mechanical properties such as high wear resistance and scratch resistance at the same time, without adversely affecting the color of the polymer resin forming the low refractive layer. In particular, due to the excellent alkali resistance, the low refractive layer can maintain excellent physical properties even after alkali treatment. Therefore, when introducing a low refractive layer to the display device, it is expected that the production process can be simplified and further the production rate and the productivity can significantly increase.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: March 28, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Boo Kyung Kim, Yeong Rae Chang, Seok Hoon Jang, Eun Kyu Her, Jin Seok Byun
  • Patent number: 11591498
    Abstract: The present invention relates to a flexible film, more specifically, to a flexible film that not only exhibits high hardness, but also has excellent flexibility. According to the flexible film of the present invention, flexibility, bendability, high hardness, scratch resistance, and high transparency are exhibited, and there is no concern for damage of the film even when bended repeatedly or folded for a long time, and thus, it may be usefully applied for the front panels, display parts of bendable, flexible, rollable, or foldable mobile devices, display devices, various instrument panels, and the like.
    Type: Grant
    Filed: September 19, 2018
    Date of Patent: February 28, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Jin Kuk Lee, Jin Young Park, Soon Hwa Jung, Yeong Rae Chang, Jung Hyun Seo, Hye Min Kim
  • Patent number: 11578189
    Abstract: The present invention relates to an optical film exhibiting excellent optical properties such as low gloss value and reflectance, and an appropriate level of haze properties, and to an image display device including the same. The optical film comprises: a light-transmitting substrate film; an antiglare layer including a binder containing a (meth)acrylate-based crosslinked polymer, and organic fine particles of a micron (?m) scale dispersed on the binder and inorganic fine particles of a nanometer (nm) scale dispersed on the binder; and a low refractive index layer which is formed on the antiglare layer and includes a binder resin containing a (co)polymer of a photopolymerizable compound, and hollow silica particles dispersed in the binder resin, wherein the organic and inorganic fine particles exhibit a predetermined particle size distribution, refractive index difference, and content range.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: February 14, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Jung Hyun Seo, Yeong Rae Chang, Jin Young Park, Han Na Lee
  • Patent number: 11555124
    Abstract: The present invention relates to an optical film including a light-transmitting substrate film such as a polyester-based substrate film and an antiglare layer, and more specifically, to an optical film capable of effectively suppressing the occurrence of interference fringes derived from the substrate film, realizing excellent antiglare properties, and having excellent scratch resistance, and excellent adhesion between the substrate film and the antiglare layer, and the like, and to an image display device including the same.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: January 17, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Jung Hyun Seo, Yeong Rae Chang, Jin Young Park, Han Na Lee
  • Patent number: 11555947
    Abstract: The present invention relates to a low refractive layer and an anti-reflective film comprising the same. The low refractive layer can exhibit excellent optical properties such as a low reflectance and a high light transmittance, and excellent mechanical properties such as high wear resistance and scratch resistance at the same time. In particular, due to the excellent alkali resistance, the low refractive layer can maintain excellent physical properties even after alkali treatment. Therefore, when introducing a low refractive layer to the display device, it is expected that the production process can be simplified and further the production rate and the productivity can significantly increase.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: January 17, 2023
    Assignee: LG Chem, Ltd.
    Inventors: Boo Kyung Kim, Yeong Rae Chang, Seok Hoon Jang, Jin Seok Byun
  • Patent number: 11548992
    Abstract: The present invention relates to an antireflection film. The antireflection film includes a low refractive index layer having excellent alkali resistance and exhibiting remarkably improved mechanical properties such as scratch resistance and impact resistance as well as reduction of a glare phenomenon, and a base film exhibiting excellent mechanical strength and water resistance in spite of a thin thickness and having no fear of interference fringes occurring. Therefore, such antireflection film can be used as a protective film of a polarizing plate or used as any other component so as to provide a thin display device, and furthermore, can effectively prevent the glare phenomenon of the display device, and can more improve the durability and lifespan thereof.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: January 10, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Boo Kyung Kim, Yeong Rae Chang, Seok Hoon Jang, Jin Seok Byun
  • Patent number: 11485876
    Abstract: The present invention relates to a resin composition for forming an optical film, an optical film, and a polarizing plate, in which the resin composition for forming an optical film improves adhesion between an antiglare layer and a light-transmitting substrate film and enables the antiglare layer and the optical film to exhibit excellent optical properties such as appropriate haze, low gloss value, and excellent antiglare properties.
    Type: Grant
    Filed: December 18, 2017
    Date of Patent: November 1, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Jung Hyun Seo, Yeong Rae Chang, Jin Young Park, Han Na Lee
  • Patent number: 11415726
    Abstract: Described herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles dispersed in the binder resin. The hollow and solid inorganic particles are dispersed in the low-refractive layer such that the amount of the solid inorganic nanoparticles positioned close to an interface between the hard coating layer and the low-refractive layer is larger than that of the hollow inorganic nanoparticles. Also described is a manufacturing method of the anti-reflective film including: applying a resin composition containing a photopolymerizable compound or a (co)polymer thereof, a fluorine-containing compound including a photoreactive functional group, a photoinitiator, hollow inorganic nanoparticles, and solid inorganic nanoparticles on a hard coating layer, and drying the applied resin composition at a temperature of 35° C. to 100° C.; and photocuring the dried resin composition.
    Type: Grant
    Filed: March 16, 2020
    Date of Patent: August 16, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Jin Seok Byun, Heon Kim, Boo Kyung Kim, Seok Hoon Jang, Yeong Rae Chang
  • Publication number: 20220221641
    Abstract: An optical laminate that does not cause a reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.
    Type: Application
    Filed: January 31, 2020
    Publication date: July 14, 2022
    Inventors: Na Young SHIN, Kyun Il RAH, Jin Seok BYUN, Kyung Ki HONG, Yeong Rae CHANG
  • Publication number: 20220196898
    Abstract: An optical laminate or a reddening-resistant layer. The optical laminate that does not cause a reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.
    Type: Application
    Filed: January 31, 2020
    Publication date: June 23, 2022
    Inventors: Na Young SHIN, Kyun Il RAH, Jin Seok BYUN, Yeong Rae CHANG, Kyung Moon KO
  • Publication number: 20220187523
    Abstract: The present disclosure relates to an optical laminate or a reddening-resistant layer. The present disclosure can provide an optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.
    Type: Application
    Filed: January 31, 2020
    Publication date: June 16, 2022
    Inventors: Na Young SHIN, Kyun Il RAH, Jin Seok BYUN, Yeong Rae CHANG
  • Patent number: 11353628
    Abstract: The present invention relates to an anti-reflective film including: a hard coating layer; and a low refractive index layer including a binder resin, and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein in a graph of the measurement of the friction force with a TAC film measured by applying a load of 400 g to the surface, the maximum amplitude (A) is 0.1 or less based on the average friction force.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: June 7, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Jin Seok Byun, Jae Young Kim, Yeong Rae Chang
  • Publication number: 20220171111
    Abstract: An optical laminate or a reddening-resistant layer. The optical laminate does not cause a reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.
    Type: Application
    Filed: January 31, 2020
    Publication date: June 2, 2022
    Inventors: Na Young SHIN, Kyun Il RAH, Jin Seok BYUN, Yeong Rae CHANG
  • Publication number: 20220171108
    Abstract: An optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.
    Type: Application
    Filed: January 31, 2020
    Publication date: June 2, 2022
    Inventors: Na Young SHIN, Kyun Il RAH, Jin Seok BYUN, Yeong Rae CHANG
  • Publication number: 20220163749
    Abstract: The present disclosure relates to an optical laminate or a reddening-resistant layer. The present disclosure can provide an optical laminate that does not cause a so-called reddening phenomenon even when driven or maintained under extremely harsh conditions (e.g., very high temperature conditions), or a reddening-resistant layer applied thereto.
    Type: Application
    Filed: January 31, 2020
    Publication date: May 26, 2022
    Inventors: Na Young SHIN, Kyun Il RAH, Jin Seok BYUN, Yeong Rae CHANG