Patents by Inventor Kwang-Su Seo

Kwang-Su 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: 11827814
    Abstract: A pressure-sensitive adhesive composition and a use thereof are provided. The present application can provide a pressure-sensitive adhesive composition which has excellent performance to block ultraviolet rays including a blue region of 380 nm or more and exhibits excellent durability upon reliability evaluation without deteriorating the optical characteristics of a polarizing plate when applied to the polarizing plate. The pressure-sensitive adhesive composition of the present application can be used, for example, for a polarizing plate and an organic light emitting device.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: November 28, 2023
    Inventors: Ha Song Yun, Seung Ju Noh, Hyun Hee Son, Kwang Su Seo
  • Publication number: 20230312796
    Abstract: The present application may provide a curable composition comprising a filler composition, an acryl monomeric component and an acryl polymeric component, wherein one or more of the acryl monomeric component and polymerization units of the acryl polymeric component comprises a cyclic ether-based acryl compound. Such curable composition is capable of ensuring excellent storage stability regardless of environmental changes by having excellent resistance to moisture and humidity; exhibits room temperature curability and quick curability in a high humidity environment even if an excessive amount of a filler composition is included; exhibits appropriate viscosity, thixotropy, adhesion and/or thermal conductivity before and after curing; and is capable of forming a cured product which is not brittle and flexible by adjusting hardness.
    Type: Application
    Filed: August 26, 2021
    Publication date: October 5, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Woo Yeon Kim, Song A Chae, Kwang Su Seo
  • Publication number: 20230295363
    Abstract: The present disclosure relates to a thermosetting resin composition, an encapsulation film, and an organic electronic device comprising the same, which is capable of forming a structure that can block moisture or oxygen flowing into an organic electronic device from the outside, and is intended to implement heat resistance and durability of the organic electronic device under severe conditions such as high temperatures.
    Type: Application
    Filed: August 18, 2021
    Publication date: September 21, 2023
    Inventors: Song A CHAE, Kwang Su SEO
  • Patent number: 11732163
    Abstract: A pressure-sensitive adhesive composition and a use thereof are provided. The present application can provide a pressure-sensitive adhesive composition which has excellent performance to block ultraviolet rays including a blue region of 380 nm or more and exhibits excellent durability upon reliability evaluation without deteriorating the optical characteristics of a polarizing plate when applied to the polarizing plate. The pressure-sensitive adhesive composition of the present application can be used, for example, for a polarizing plate and an organic light emitting device.
    Type: Grant
    Filed: January 23, 2019
    Date of Patent: August 22, 2023
    Inventors: Ha Song Yun, Seung Ju Noh, Hyun Hee Son, Kwang Su Seo
  • Patent number: 11725126
    Abstract: Provided is a multilayer adhesive tape having excellent step coverage and reworkability. The multilayer adhesive tape sequentially includes: a first outer adhesive layer; an intermediate adhesive layer; and a second outer adhesive layer, in which the intermediate adhesive layer includes an intermediate adhesive polymer including: a polymerization unit of an alkyl group-containing (meth)acrylate monomer; a polymerization unit of a carboxyl group-containing monomer; and a polymerization unit of an acrylamide-based monomer.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: August 15, 2023
    Inventors: Jae Sung Hong, Dong Hoon Lim, Ju Yong Seo, Jun Man Choi, Woo Yeon Kim, Ho Kyung Song, Jang Soon Kim, Sle Lee, Kwang Su Seo
  • Publication number: 20230151123
    Abstract: The present disclosure provides a photocurable composition, which has excellent coatability and is capable of providing a coating layer having excellent surface quality and thickness uniformity, a coating layer including a cured product of the photocurable composition, and a substrate for a semiconductor process including the coating layer.
    Type: Application
    Filed: July 22, 2021
    Publication date: May 18, 2023
    Applicant: LG CHEM, LTD.
    Inventors: Sang Hwan KIM, Jung Woo CHOI, Ki Seung SEO, Kwang Su SEO, Jun Beom PARK, Won Seup CHO
  • Publication number: 20230151249
    Abstract: The present specification relates to a polyurethane-based adhesive composition, a surface protective film comprising the same, a method for preparing a surface protective film, and a method for manufacturing an organic light emitting electronic device.
    Type: Application
    Filed: September 7, 2021
    Publication date: May 18, 2023
    Inventors: Jinhoo Kim, Sang Hwan Kim, Kwang Su Seo
  • Publication number: 20230094474
    Abstract: The present disclosure relates to a silicone-based coating composition, and a silicone-based release film including the same, wherein the silicone-based coating composition comprises a silicone-based compound represented by the following Chemical Formula 1 having a weight average molecular weight of greater than or equal to 25,000 g/mol and less than or equal to 70,000 g/mol: wherein R1 to R3 and n are described herein.
    Type: Application
    Filed: August 26, 2021
    Publication date: March 30, 2023
    Applicant: LG Chem, Ltd.
    Inventors: Jun Hyoung Park, Jun Beom Park, Jihye Jung, Kwang Su Seo
  • Patent number: 11549036
    Abstract: A multilayer adhesive tape in which an interface separation between layers does not occur even at in extremely low temperature atmosphere is provided. The multilayer adhesive tape sequentially includes: a first outer adhesive layer; an intermediate adhesive layer; and a second outer adhesive layer, in which attaching force among the first outer adhesive layer, the intermediate adhesive layer, and the second outer adhesive layer is maintained after the multilayer adhesive tape is treated in liquefied nitrogen for 15 seconds.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: January 10, 2023
    Inventors: Hokyung Song, Dong Hoon Lim, Ju Yong Seo, Jun Man Choi, Woo Yeon Kim, Jae Sung Hong, Jang Soon Kim, Sle Lee, Kwang Su Seo
  • Publication number: 20220380635
    Abstract: The present disclosure relates to a silicone-based coating composition, and a silicone-based release film comprising the same.
    Type: Application
    Filed: July 20, 2021
    Publication date: December 1, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jun Hyoung Park, Jihye Jung, Kwang Su Seo
  • Patent number: 11512152
    Abstract: A method of preparing an acrylic adhesive, in which the durability of an adhesive film may be improved through additional photocuring and the residual components according to solution photopolymerization are efficiently removed, and an adhesive film prepared therefrom.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: November 29, 2022
    Inventors: Jun Man Choi, Sang Hwan Kim, Jang Soon Kim, Kwang Su Seo, Won Gu Choi, Chi Gwan An
  • Patent number: 11466184
    Abstract: The present invention provides an adhesive composition that exhibits excellent adhesive force, and can be easily separated by photocuring during a peeling step, in which foaming and lifting are not generated even after a high temperature process.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: October 11, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Mi Jang, Sera Kim, Ji Ho Han, Kwang Joo Lee, Bora Yeon, Kwang Su Seo
  • Publication number: 20220275260
    Abstract: The present disclosure provides a surface protective film which is used in a process of fabricating an encapsulation layer for an organic light-emitting diode, and makes it possible to prevent bubbles from being generated in the protective film or the surface smoothness of the protective film from being degraded, due to solvent volatilization from the protective film. Specifically, the present disclosure provides a surface protective film including an adhesive layer provided on one surface of a substrate layer, wherein the adhesive layer includes a cured product of an adhesive composition including: a urethane-based resin having a photoreactive group at the end or side chain thereof; a monofunctional (meth)acrylate monomer; a crosslinking agent having two or more photoreactive groups at the end thereof; a photoinitiator; and a photoreactive siloxane additive, the adhesive composition being solvent-free.
    Type: Application
    Filed: November 20, 2020
    Publication date: September 1, 2022
    Inventors: So Jin Kim, Hyun Cheol Kim, Jeong Min Choi, Sang Hwan Kim, Kwang Su Seo
  • Patent number: 11427658
    Abstract: A method for manufacturing a low molecular weight acrylic resin, and more particularly, to a method for manufacturing a low molecular weight acrylic resin having a high conversion rate and a low poly dispersion index includes maintaining the temperature of a reacting part with a screw stirrer at a specific temperature during a continuous polymerization of a solvent-free acrylic composition in a continuous flow reactor having the reacting part.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: August 30, 2022
    Inventors: Woo Yeon Kim, Jun Man Choi, Jang Soon Kim, Kwang Su Seo
  • Patent number: 11384265
    Abstract: The present application relates to a photocurable solventless pressure-sensitive adhesive composition, a pressure-sensitive adhesive polarizing plate and a display device. According to the present application, a pressure-sensitive adhesive composition, a polarizing plate and a liquid crystal device, which have excellent durability and antistatic abilities, can be provided.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: July 12, 2022
    Assignee: SHANJIN OPTOELECTRONICS (SUZHOU) CO., LTD.
    Inventors: Seung Ju Noh, Ha Song Yun, Woo Yeon Kim, Hyun Hee Son, Jang Soon Kim, Kwang Su Seo
  • Publication number: 20220162360
    Abstract: The present application relates to a curable composition and a use thereof. The present application can provide a curable composition that has excellent reliability including excellent light resistance, where such excellent reliability can be stably maintained for a long period of time even under severe conditions, and a use thereof. The curable composition comprises a polymer component and a curing agent, wherein the polymer component includes an alkyl (meth)acrylate unit having a straight or branched alkyl group and a unit of a compound of Formula 1 below, and has a weight average molecular weight of 2,200,000 or more: wherein, R1 is an alkylene group having 3 or more carbon atoms, and R2 is hydrogen or an alkyl group having 1 to 4 carbon atoms.
    Type: Application
    Filed: October 16, 2020
    Publication date: May 26, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Byeong Ho Kim, Won Ho Kim, Ho Kyung Song, Kwang Su Seo, Hwan Ho Shin
  • Patent number: 11339288
    Abstract: A photocurable composition is provided. The photocurable composition includes: a urethane acrylamide oligomer derived from a first urethane prepolymer having an isocyanate end group and a polar group-containing acrylamide; a urethane acrylate oligomer derived from a second urethane prepolymer having an isocyanate end group and a polar group-containing (meth)acrylate; and an amide group-containing acrylic polymer derived from acrylamide and a polar group-containing (meth)acrylate.
    Type: Grant
    Filed: November 6, 2018
    Date of Patent: May 24, 2022
    Inventors: Sang Hwan Kim, Sle Lee, Jang Soon Kim, Kwang Su Seo
  • Publication number: 20220154043
    Abstract: The present disclosure provides an adhesive composition for a dicing film, a dicing film, and a dicing die-bonding film, which have excellent pickup performance.
    Type: Application
    Filed: October 8, 2021
    Publication date: May 19, 2022
    Applicant: LG CHEM, LTD.
    Inventors: Ji Ho HAN, Da Ae KIM, Kwang Joo LEE, Mi JANG, Bo Ra YEON, Kwang Su SEO, Mi Seon KIM
  • Publication number: 20220002566
    Abstract: A coating composition is provided. The coating composition of the present application has excellent compatibility between the components. In addition, there is an advantage that the release layer formed from the coating composition of the present application has low transmittance for light having a wavelength of 380 nm or more.
    Type: Application
    Filed: November 28, 2019
    Publication date: January 6, 2022
    Applicant: LG Chem, Ltd.
    Inventors: Jun Hyoung Park, Mi Seon Kim, Kwang Su Seo
  • Patent number: 11091674
    Abstract: A multilayer adhesive tape exhibiting high step coverage and having both high reworkability and excellent punchability is provided. The multilayer adhesive tape sequentially includes: a first outer adhesive layer; an intermediate adhesive layer; and a second outer adhesive layer, in which a glass transition temperature of the intermediate adhesive layer is ?40° C. or more and 0° C. or less, a glass transition temperature of each of the first outer adhesive layer and the second outer adhesive layer is ?60° C. or more and ?20° C. or less, and a difference in glass transition temperature between each of the first outer adhesive layer and the second outer adhesive layer and the intermediate adhesive layer is 5° C. or more and 25° C. or less.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: August 17, 2021
    Inventors: Sle Lee, Dong Hoon Lim, Ju Yong Seo, Jun Man Choi, Woo Yeon Kim, Ho Kyung Song, Jae Sung Hong, Jang Soon Kim, Kwang Su Seo