Patents by Inventor Jung Hyun Seo

Jung Hyun Seo 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: 12345978
    Abstract: The present disclosure relates to an anti-glare film including an acrylic substrate and a coating layer located on at least one side of the acrylic substrate, which has a specific rate of change of band area ratio in a graph derived from the result of Raman spectroscopy performed for the coating layer in the thickness direction. It also relates to a polarizing plate, and a display apparatus including the same.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: July 1, 2025
    Assignee: LG CHEM, LTD.
    Inventors: Hanna Lee, Seung Hun Lee, Jung Hyun Seo, Jinseok Byun, Yeongrae Chang
  • Publication number: 20250105301
    Abstract: Provided is a collector including an adhesion enhancing layer capable of providing a positive electrode having excellent adhesion and low interfacial resistance, a positive electrode including the same, and a lithium secondary battery including the positive electrode. The collector includes a conductive metal layer, and an adhesion enhancing layer provided on at least one surface of the conductive metal layer, wherein the adhesion enhancing layer has a surface roughness (Ra) of 90 nm to 600 nm and a diiodomethane contact angle of 70° to 120°.
    Type: Application
    Filed: January 13, 2023
    Publication date: March 27, 2025
    Applicants: LG Chem, Ltd., LG Energy Solution, Ltd.
    Inventors: Jung Hyun Seo, Min Soo Kim, Dong Oh Shin, Ho Chan Lee, Kwang Ho Yoo, Soon Hwa Jung
  • Publication number: 20250105304
    Abstract: An adhesion enhancing composition that is capable of providing a positive electrode with excellent scratch resistance and adhesiveness and low interfacial resistance is provided. The adhesion enhancing composition includes a fluorine-based polymer binder, a first water-soluble binder, a second water-soluble binder, and a conductive material. The adhesion enhancing composition includes the fluorine-based polymer binder, the first water-soluble binder, and the second water-soluble binder in specific amounts. A collector including the adhesion enhancing composition is also provided. Moreover, a positive electrode including the collector, a method for manufacturing the positive electrode, and a lithium secondary battery including the positive electrode are also provided.
    Type: Application
    Filed: January 13, 2023
    Publication date: March 27, 2025
    Applicant: LG Chem, Ltd.
    Inventors: Jung Hyun Seo, Min Soo Kim, Soon Hwa Jung
  • Patent number: 12169298
    Abstract: The present invention relates to a polarizing plate including: a polarizer; a first hard coating layer positioned on the polarizer and containing binder resin including (meth) acrylate-based (co) polymer; a light transmitting substrate positioned on the first hard coating layer, having retardation of 3000 nm or more, and having in-plane birefringence; and a second hard coating layer positioned on the light transmitting substrate and including a binder resin, and solid-type inorganic nanoparticles dispersed in the binder resin, wherein the degree of a angle formed by the slow axis of the light transmitting substrate and the absorption axis of the polarizer is 5 to 85°, and an image display device including the same.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: December 17, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jung Hyun Seo, Kyungki Hong, Yeongrae Chang, Jin Young Park
  • Patent number: 12153239
    Abstract: The present disclosure provides a polarizing plate comprising: a polarizer; an optical laminate formed on one side of the polarizer and containing a polymer substrate and an antiglare layer; and a thermoplastic resin layer formed on the other side of the polarizer and containing a (meth)acrylate resin, and a liquid crystal panel and a display device including the polarizing plate.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: November 26, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Min Soo Kim, Jaehoon Shim, Jung Hyun Seo, Jae Pil Koo, Joo Jong Moon, Jaeyoung Kim
  • Publication number: 20240332481
    Abstract: A method for manufacturing a positive electrode current collector coated with an adhesion enhancement layer includes: (S1) preparing an aqueous slurry in which a hydrocarbon-based water-soluble binder polymer is dissolved, and polyvinylidene fluoride-based polymer particles and a first conductive material are dispersed; and (S2) coating the aqueous slurry on at least one surface of a metal current collector and drying by thermal treatment at a higher temperature than a melting point of the polyvinylidene fluoride-based polymer particles to form the adhesion enhancement layer.
    Type: Application
    Filed: October 24, 2022
    Publication date: October 3, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Min-Soo Kim, Jung-Hyun Seo, Soon-Hwa Jung
  • Publication number: 20240332539
    Abstract: A positive electrode current collector coated with an adhesion enhancement layer includes an aluminum foil current collector, and an adhesion enhancement layer coated on at least one surface of the aluminum foil current collector. The adhesion enhancement layer includes a first binder polymer and a first conductive material, wherein the adhesion enhancement layer includes 40 to 80 weight % of Al and 1 to 10 weight % of F and has a ratio of F/Al contents of 0.0125 to 0.25 when measured on surfaces of the adhesion enhancement layer by energy-dispersive X-ray spectroscopy (EDX), wherein the first binder polymer includes a first polyvinylidene fluoride-based polymer.
    Type: Application
    Filed: October 24, 2022
    Publication date: October 3, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Min-Soo Kim, Jung-Hyun Seo, Soon-Hwa Jung
  • Patent number: 12091520
    Abstract: The present disclosure relates to a composition comprising: a solvent screened using a solvent-polymer particle interaction parameter ?Pi and a solvent-(meth)acrylate binder interaction parameter ?Bi, polymer particles, and a (meth)acrylate binder, and an optical film and a display device comprising the same.
    Type: Grant
    Filed: March 4, 2020
    Date of Patent: September 17, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jung Hyun Seo, Intaek Song, Seungha Kim, Soree Kim, Yeongrae Chang
  • Patent number: 12092794
    Abstract: The present disclosure relates to an anti-glare film including a light-transmitting substrate; and a hard coating layer containing a binder resin and particles dispersed in the binder resin, a polarizing plate, and a display apparatus including the same, wherein the particles include a first inorganic particle aggregate having an average particle diameter of 1 to 2 ?m; a second inorganic particle aggregate having an average particle diameter of 3 to 5 ?m; and organic particles in the form of primary particles having an average particle diameter of 1 to 10 ?m.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: September 17, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Hanna Lee, Jung Hyun Seo, Hye Min Lee, Yeongrae Chang, Joo Jong Moon, Jae Hak Kim
  • Patent number: 12085743
    Abstract: The present invention relates to a polarizing plate, a liquid crystal panel and a display device, and more specifically to a polarizing plate including a polarizer, and a hard coating layer having a thickness of 10 ?m or less and a light-transmitting substrate which are positioned so as to face each other on the basis of the polarizer, and to a liquid crystal panel and a display device including the same.
    Type: Grant
    Filed: April 26, 2019
    Date of Patent: September 10, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jung Hyun Seo, Kyun Il Rah, Young Gon Kim, Taek Geun Nam, Gae Sung Kim, Hyun Soo Lee, Keon Woo Kim
  • Patent number: 12078777
    Abstract: The present disclosure provides an optical laminate including a polymer substrate and an antiglare layer, wherein rubber particles having a cross-sectional diameter of 10 to 500 nm exist within 50% of the thickness of the antiglare layer from the interface between the polymer substrate and the antiglare layer, a polarizing plate including the optical laminate, and a liquid crystal display and a display device including the polarizing plate.
    Type: Grant
    Filed: November 14, 2019
    Date of Patent: September 3, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Jaeyoung Kim, Yeongrae Chang, Jung Hyun Seo, Min Soo Kim, Intaek Song
  • Publication number: 20240290990
    Abstract: A method for manufacturing a positive electrode current collector coated with an adhesion enhancement layer includes preparing an aqueous slurry comprising a first binder polymer comprising polyvinylidene fluoride-based polymer particles having a melting point of 50 to 150° C. and a first conductive material at a weight ratio of 0.5:1 to 8:1; and coating the aqueous slurry on at least one surface of a metal current collector and drying by thermal treatment at higher temperature than the melting point of the polyvinylidene fluoride-based polymer particles to form the adhesion enhancement layer.
    Type: Application
    Filed: October 24, 2022
    Publication date: August 29, 2024
    Applicant: LG Chem, Ltd.
    Inventors: Min-Soo Kim, Su-Jin Kim, Jung-Hyun Seo, Soon-Hwa Jung
  • Publication number: 20240170669
    Abstract: Lithium secondary batteries are disclosed. In an embodiment, a lithium secondary battery includes an anode including an anode active material that includes carbon-based active material particles including carbon, the carbon-based active material particles having a Brunauer-Emmett-Teller (BET) specific surface area of 3.0 m2/g to 5.0 m2/g and an average particle diameter (D50) of 5?m to 7.5 ?m, a cathode facing the anode, and a non-aqueous electrolyte solution including a non-aqueous organic solvent that includes a propionate-based organic solvent including propionate and a lithium salt. A content of the propionate-based organic solvent relative to a total volume of the non-aqueous organic solvent is 55 vol % or more.
    Type: Application
    Filed: November 17, 2023
    Publication date: May 23, 2024
    Inventors: Eun Jin KIM, You Kyung PARK, Jung Hyun SEO, Eun Sam CHO, Jeong Tae HWANG, Mi Ryeong LEE, Yoon Ji LEE
  • Patent number: 11945969
    Abstract: The present invention relates to an anti-glare film including: a light-transmitting substrate; and a hard coating layer containing a binder resin and inorganic fine particles dispersed in the binder resin, wherein the anti-glare film has a specific reflection intensity ratio (R), and a polarizing plate and a display device including the anti-glare film.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: April 2, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Hanna Lee, Jung Hyun Seo, Yeongrae Chang, Jaeyoung Kim, Intaek Song
  • Patent number: 11860340
    Abstract: The present disclosure provides an optical laminate including: a polymer substrate containing a polymer resin and rubber particles having a cross-sectional diameter of 10 to 500 nm dispersed in the polymer resin; and an antiglare layer containing a binder resin and organic fine particles, nano-inorganic particles and chain-shaped silica dispersed in the binder resin, wherein rubber particles having a cross-sectional diameter of 10 to 500 nm exist within 50% of the thickness of the antiglare layer from the interface between the polymer substrate and the antiglare layer, a polarizing plate including the optical laminate, and a liquid crystal display and a display device including the polarizing plate.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: January 2, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Min Soo Kim, Jung Hyun Seo, Jaehoon Shim, Jae Pil Koo, Hyung Oh Lim, Jaeyoung Kim
  • 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: 11815759
    Abstract: The present disclosure relates to a polarizing plate including: a polarizer, and a first hard coating layer having a thickness of 10 um or less and an anti-reflection film which are positioned so as to face each other around the polarizer, wherein the anti-reflection film includes a light-transmitting substrate and a second hard coating layer, and wherein a ratio (a/b) of a transmittance (a) at a wavelength of 400 nm of the second hard coating layer to the transmittance (b) at a wavelength of 500 nm of the second hard coating layer is 0.95 or less, or 0.85 to 0.95.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: November 14, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Intaek Song, Jung Hyun Seo, Hanna Lee, Yeongrae Chang, Jaeyoung Kim
  • Publication number: 20230341590
    Abstract: The present disclosure relates to an anti-glare film including an acrylic substrate and a coating layer located on at least one side of the acrylic substrate, which has a specific rate of change of band area ratio in a graph derived from the result of Raman spectroscopy performed for the coating layer in the thickness direction. It also relates to a polarizing plate, and a display apparatus including the same.
    Type: Application
    Filed: July 20, 2021
    Publication date: October 26, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Hanna LEE, Seung Hun LEE, Jung Hyun SEO, Jinseok BYUN, Yeongrae CHANG
  • Publication number: 20230198047
    Abstract: A composite pad and a battery module including the same are disclosed. The composite pad is a pad including a first pad surface and a second pad surface positioned opposite the first pad surface. The composite pad includes a pad body with elasticity, and a heat conduction part with thermal conductivity coupled to the pad body and connected to an edge of the pad. The pad body forms at least a portion of the first pad surface and forms at least a portion of the second pad surface.
    Type: Application
    Filed: December 20, 2022
    Publication date: June 22, 2023
    Inventors: Jeong Tae HWANG, Jung Hyun SEO, Eun Sam CHO, Ju Young CHOI
  • Publication number: 20230152621
    Abstract: The present disclosure relates to an anti-glare film including an acrylic substrate and a coating layer located on at least one side of the acrylic substrate, which has a specific rate of change of band area ratio in a graph derived from the result of Raman spectroscopy performed for the coating layer in the thickness direction. It also relates to a polarizing plate, and a display apparatus including the same.
    Type: Application
    Filed: July 20, 2021
    Publication date: May 18, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Seung Hun LEE, Hanna LEE, Jung Hyun SEO, Yeongrae CHANG, Jong Soo DO, Sun Joon OH