Patents by Inventor Bu-Gi Jung

Bu-Gi Jung 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: 11453803
    Abstract: Disclosed is a semi-hardened pressure sensitive adhesive film to be used in the semi-hardened state and having excellent printing step absorption properties. The adhesive film according to the present invention contains a radial polymer composition and a cationic polymer composition, and the radial polymer composition is primarily cross-linked to maintain the semi-hardened state. When applied onto a substrate through a printing step, the present invention has excellent step absorption properties and adhesion properties and excellent durability even under high-temperature and high-humidity conditions.
    Type: Grant
    Filed: March 27, 2018
    Date of Patent: September 27, 2022
    Inventors: Min-Seok Song, Chan-Oh Yoon, Eun-Kyung Park, Bu-Gi Jung, Jang-Soon Kim
  • Patent number: 11091671
    Abstract: A high-refractive adhesive film includes: a thermosetting resin matrix; and high refractive particles dispersed in the thermosetting resin matrix. The refraction index of the high-refractive particles is higher than that of the thermosetting resin matrix.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: August 17, 2021
    Inventors: Chan-Oh Yoon, Sung-Chan Park, Jang-Soon Kim, Eun-Kyung Park, Bu-Gi Jung, Won-Ho Kim
  • Patent number: 10961416
    Abstract: Disclosed is a semi-hardened pressure sensitive adhesive film to be used in the semi-hardened state and having excellent printing step absorption properties. The adhesive film according to the present invention contains a radial polymer composition and a cationic polymer composition, and the radial polymer composition is primarily cross-linked to maintain the semi-hardened state. When applied onto a substrate through a printing step, the present invention has excellent step absorption properties and adhesion properties and excellent durability even under high-temperature and high-humidity conditions.
    Type: Grant
    Filed: April 8, 2013
    Date of Patent: March 30, 2021
    Inventors: Min-Seok Song, Chan-Oh Yoon, Eun-Kyung Park, Bu-Gi Jung, Jang-Soon Kim
  • Patent number: 10465098
    Abstract: The present invention provides an optical adhesive sheet including a layered structure of a first adhesive layer and a second adhesive layer, in which the first adhesive layer has a glass transition temperature of ?50° C. to ?30° C. and a modulus of 0.3×105 Pa to about 0.6×105 Pa, and the second adhesive layer has a glass transition temperature of ?20° C. to ?10° C. and a modulus of 0.7×105 Pa to 1.0×105 Pa.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: November 5, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Joo-Hyun Lee, Jang-Soon Kim, Bu-Gi Jung, Sang-Hwan Kim, Sung-Chan Park, Chan-Oh Yoon, Han-Na Lee
  • Patent number: 10435598
    Abstract: Provided are an adhesive bonding composition for optical use and a multistage curing method thereof, the composition including a methacrylate-based monomer and an acrylate-based monomer, in which a weight ratio of the methacrylate-based monomer to the acrylate-based monomer ranges from about 1:1 to about 1:10.
    Type: Grant
    Filed: December 2, 2015
    Date of Patent: October 8, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Bo-Ra Yeon, Bu-Gi Jung, Sang-Hwan Kim, Kyung-Joon Yoon, Jang-Soon Kim, Won-Gu Choi
  • Patent number: 10259977
    Abstract: Provided is an adhesive composition including: a (meth)acrylic acid ester-based photo-curable resin; and an oxygen-free di-functional diene-based rubber hardener.
    Type: Grant
    Filed: September 16, 2015
    Date of Patent: April 16, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Won-Ho Kim, Sle Lee, Chan-Oh Yoon, Jang-Soon Kim, Eun-Kyung Park, Bu-Gi Jung, Min-Jeong Kim, Sang-Hwan Kim
  • Patent number: 10227510
    Abstract: The present invention relates to an optical adhesive film including plate-type inorganic nanoparticles and a curable resin. The optical adhesive film has improved barrier characteristics to moisture and gas, improved light-transmittance, and excellent durability and peel characteristics.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: March 12, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Chan Oh Yoon, Sung Chan Park, Jang Soon Kim, Eun Kyung Park, Bu Gi Jung, Won Ho Kim
  • Patent number: 10174224
    Abstract: Provided is a urethane adhesive composition for a touch panel having a glass transition temperature between ?20° C. to ?50° C., and which, as a cured composition, has an elasticity of 50,000 Pa to 70,000 Pa at 60° C. to 80° C.
    Type: Grant
    Filed: August 7, 2013
    Date of Patent: January 8, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Chan Oh Yoon, Eun Kyung Park, Jaegwan Lee, Jang Soon Kim, Bu Gi Jung, Sung Chan Park, Won Ho Kim
  • Patent number: 10144854
    Abstract: Provided are an adhesive composition for a touch panel, including: a hydrophilic functional group-containing monomer and an adhesion promoter, wherein a dielectric constant at a frequency of 100 kHz to 2 MHz is 3.5 or less, and a storage modulus is 1.0×105 Pa to 7.0×105 Pa at 25° C. to 85° C., and an adhesive film including an adhesive layer including a cured product of the adhesive composition for a touch panel. In addition, provided is a touch panel including: a conductive plastic film having a conductive layer formed on one surface; and an adhesive layer attached onto the conductive layer and including a cured product of the adhesive composition for a touch panel.
    Type: Grant
    Filed: February 27, 2014
    Date of Patent: December 4, 2018
    Assignee: LG Chem, Ltd.
    Inventors: Chan Oh Yoon, Eun Kyung Park, Bu Gi Jung, Jang Soon Kim, Sung Chan Park, Won Ho Kim
  • Publication number: 20180208798
    Abstract: Disclosed is a semi-hardened pressure sensitive adhesive film to be used in the semi-hardened state and having excellent printing step absorption properties. The adhesive film according to the present invention contains a radial polymer composition and a cationic polymer composition, and the radial polymer composition is primarily cross-linked to maintain the semi-hardened state. When applied onto a substrate through a printing step, the present invention has excellent step absorption properties and adhesion properties and excellent durability even under high-temperature and high-humidity conditions.
    Type: Application
    Filed: March 27, 2018
    Publication date: July 26, 2018
    Inventors: Min-Seok Song, Chan-Oh Yoon, Eun-Kyung Park, Bu-Gi Jung, Jang-Soon Kim
  • Patent number: 9850408
    Abstract: The present invention relates to an optical adhesive film which has excellent adhesive strength at room temperature and has improved efficiency in a rework process since peel strength is low at high temperatures. When attaching a touchscreen panel and an LCD by using the adhesive film of the present invention and separating the touchscreen panel and the LCD at high temperatures, the touchscreen panel and the LCD can be separated from each other without causing damage thereto. Additionally, the optical film of the present invention comprises two adhesive layers, wherein peeling occurs at the first adhesive layer having an adhesive composition such that a peeling surface can be controlled according to the convenience of a user.
    Type: Grant
    Filed: January 8, 2013
    Date of Patent: December 26, 2017
    Assignee: LG Chem, Ltd.
    Inventors: Chan Oh Yoon, Jang Soon Kim, Min Seok Song, Eun Kyung Park, Bu Gi Jung
  • Publication number: 20170342300
    Abstract: Provided are an adhesive bonding composition for optical use and a multistage curing method thereof, the composition including a methacrylate-based monomer and an acrylate-based monomer, in which a weight ratio of the methacrylate-based monomer to the acrylate-based monomer ranges from about 1:1 to about 1:10.
    Type: Application
    Filed: December 2, 2015
    Publication date: November 30, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Bo-Ra Yeon, Bu-Gi Jung, Sang-Hwan Kim, Kyung-Joon Yoon, Jang-Soon Kim, Won-Gu Choi
  • Publication number: 20170260428
    Abstract: Provided is an adhesive composition including: a (meth)acrylic acid ester-based photo-curable resin; and an oxygen-free di-functional diene-based rubber hardener.
    Type: Application
    Filed: September 16, 2015
    Publication date: September 14, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Won-Ho Kim, Sle Lee, Chan-Oh Yoon, Jang-Soon Kim, Eun-Kyung Park, Bu-Gi Jung, Min-Jeong Kim, Sang-Hwan Kim
  • Publication number: 20170253771
    Abstract: The present invention provides an optical adhesive sheet including a layered structure of a first adhesive layer and a second adhesive layer, in which the first adhesive layer has a glass transition temperature of ?50° C. to ?30° C. and a modulus of 0.3×105 Pa to about 0.6×105 Pa, and the second adhesive layer has a glass transition temperature of ?20° C. to ?10° C. and a modulus of 0.7×105 Pa to 1.0×105 Pa.
    Type: Application
    Filed: June 23, 2015
    Publication date: September 7, 2017
    Applicant: LG Chem, Ltd.
    Inventors: Joo-Hyun Lee, Jang-Soon Kim, Bu-Gi Jung, Sang-Hwan Kim, Sung-Chan Park, Chan-Oh Yoon, Han-Na Lee
  • Publication number: 20160215175
    Abstract: A high-refractive adhesive film includes: a thermosetting resin matrix; and high refractive particles dispersed in the thermosetting resin matrix. The refraction index of the high-refractive particles is higher than that of the thermosetting resin matrix.
    Type: Application
    Filed: October 20, 2014
    Publication date: July 28, 2016
    Inventors: Chan-Oh YOON, Sung-Chan PARK, Jang-Soon KIM, Eun-Kyung PARK, Bu-Gi JUNG, Won-Ho KIM
  • Publication number: 20160152868
    Abstract: Provided are an adhesive composition for a touch panel, including: a hydrophilic functional group-containing monomer, wherein a dielectric constant at a frequency of 100 kHz to 2 MHz is 3.5 or less, and an adhesive film having an adhesive layer including a cured product of the adhesive composition for a touch panel. In addition, provided is a touch panel including: a conductive plastic film having a conductive layer formed on one surface; and an adhesive layer attached onto the conductive layer and including a cured product of the adhesive composition for a touch panel.
    Type: Application
    Filed: February 27, 2014
    Publication date: June 2, 2016
    Applicant: LG Hausys, Ltd.
    Inventors: Chan Oh YOON, Eun Kyung PARK, Bu Gi JUNG, Jae Gwan LEE, Jang Soon KIM, Sung Chan PARK, Won Ho KIM
  • Publication number: 20160145473
    Abstract: The present invention relates to an optical adhesive film including plate-type inorganic nanoparticles and a curable resin. The optical adhesive film has improved barrier characteristics to moisture and gas, improved light-transmittance, and excellent durability and peel characteristics.
    Type: Application
    Filed: June 27, 2014
    Publication date: May 26, 2016
    Inventors: Chan Oh YOON, Sung Chan PARK, Jang Soon KIM, Eun Kyung PARK, Bu Gi JUNG, Won Ho KIM
  • Publication number: 20160108294
    Abstract: Provided are an adhesive composition for a touch panel, including: a hydrophilic functional group-containing monomer and an adhesion promoter, wherein a dielectric constant at a frequency of 100 kHz to 2 MHz is 3.5 or less, and a storage modulus is 1.0×105 Pa to 7.0×105 Pa at 25° C. to 85° C., and an adhesive film including an adhesive layer including a cured product of the adhesive composition for a touch panel. In addition, provided is a touch panel including: a conductive plastic film having a conductive layer formed on one surface; and an adhesive layer attached onto the conductive layer and including a cured product of the adhesive composition for a touch panel.
    Type: Application
    Filed: February 27, 2014
    Publication date: April 21, 2016
    Applicant: LG Hausys, Ltd.
    Inventors: Chan Oh YOON, Eun Kyung PARK, Bu Gi JUNG, Jang Soon KIM, Sung Chan PARK, Won Ho KIM
  • Publication number: 20150239211
    Abstract: Provided is a laminate comprising a composite first adhesive layer in which a printed portion is embedded within an adhesive portion. The laminate can solve the bending phenomenon caused by raised parts, have a reduced thickness, allow manufacturing thereof due to a simplified process, and remedy problems arising from faulty lamination.
    Type: Application
    Filed: July 29, 2013
    Publication date: August 27, 2015
    Inventors: Chan Oh Yoon, Jang Soon Kim, Sung Chan Park, Young Sung Cho, Kyung Tae Kim, Eun Kyung Park, Bu Gi Jung, Won Ho Kim
  • Publication number: 20150232707
    Abstract: Provided is a urethane adhesive composition for a touch panel having a glass transition temperature between ?20° C. to ?50° C., and which, as a cured composition, has an elasticity of 50,000 Pa to 70,000 Pa at 60° C. to 80° C.
    Type: Application
    Filed: August 7, 2013
    Publication date: August 20, 2015
    Inventors: Chan Oh Yoon, Eun Kyung Park, Jaegwan Lee, Jang Soon Kim, Bu Gi Jung, Sung Chan Park, Won Ho Kim