Patents by Inventor Ki-Ok Kwon

Ki-Ok Kwon 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: 10054726
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate, which is lightweight and has a thin thickness and excellent physical properties including durability, water resistance, workability, pressure-sensitive adhesion and a light leakage prevention effect; and the liquid crystal display device including the same are provided.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: August 21, 2018
    Assignee: LG Chem, Ltd.
    Inventors: In Kyu Park, Ki Ok Kwon, No Ma Kim, In Ho Hwang, Sung Hyun Nam, Sung Soo Yoon, Kyun Il Rah, Min Ki Lee
  • Patent number: 10030181
    Abstract: Provided are a modified polyvinyl alcohol-based resin with an acrylic group introduced thereto and including a hydroxyl group formed during the introduction of the acrylic group, an adhesive including the modified polyvinyl alcohol-based resin having excellent adhesion, humidity resistance, and water resistance, an adhesive including a polyvinyl alcohol-based resin, and a compound having an epoxy group, and an acrylic group, a polarizing plate and an image display device including the adhesive. The adhesive for a polarizing plate according to an embodiment of the present invention has excellent adhesion, humidity resistance, and water resistance as well as having excellent solubility with respect to water and an increase in adhesion while physical properties of a typical polyvinyl alcohol-based resin are maintained.
    Type: Grant
    Filed: January 13, 2016
    Date of Patent: July 24, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Seong-Jun Park, Ki-Ok Kwon, Kyun-Il Rah
  • Patent number: 9791608
    Abstract: The present invention relates to a polarizing plate and a liquid crystal display device. In the present invention, the polarizing plate is lightweight and has a small thickness and excellent properties including durability, water resistance, workability, pressure-sensitive adhesion and light leakage prevention ability; and the liquid crystal display device including the same are provided.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: October 17, 2017
    Assignee: LG Chem, Ltd.
    Inventors: In Ho Hwang, Ki Ok Kwon, No Ma Kim, Sung Hyun Nam, In Kyu Park, Sung Soo Yoon, Kyun Il Rah, Min Ki Lee
  • Patent number: 9733511
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: August 15, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Ho Hwang, Kyun Il Rah, Min Ki Lee, Sae Han Cho
  • Patent number: 9703138
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Grant
    Filed: February 14, 2014
    Date of Patent: July 11, 2017
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Ho Hwang, Kyun Il Rah, Min Ki Lee, Sae Han Cho
  • Patent number: 9405049
    Abstract: The present invention relates to a polarizing plate and a liquid crystal display device. The polarizing plate, which is lightweight and has a small thickness and excellent physical properties including durability, water resistance, workability, pressure-sensitive adhesion and a light leakage prevention effect; and the liquid crystal display device including the same may be provided.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: August 2, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Sung Soo Yoon, Ki Ok Kwon, No Ma Kim, In Ho Hwang, Sung Hyun Nam, In Kyu Park, Kyun Il Rah, Min Ki Lee
  • Publication number: 20160130483
    Abstract: Provided are a modified polyvinyl alcohol-based resin with an acrylic group introduced thereto and including a hydroxyl group formed during the introduction of the acrylic group, an adhesive including the modified polyvinyl alcohol-based resin having excellent adhesion, humidity resistance, and water resistance, an adhesive including a polyvinyl alcohol-based resin, and a compound having an epoxy group, and an acrylic group, a polarizing plate and an image display device including the adhesive. The adhesive for a polarizing plate according to an embodiment of the present invention has excellent adhesion, humidity resistance, and water resistance as well as having excellent solubility with respect to water and an increase in adhesion while physical properties of a typical polyvinyl alcohol-based resin are maintained.
    Type: Application
    Filed: January 13, 2016
    Publication date: May 12, 2016
    Inventors: Seong-Jun Park, Ki-Ok Kwon, Kyun-Il Rah
  • Patent number: 9304238
    Abstract: A polarizing plate, a fabrication method thereof, and a display device using the same are provided. The polarizing plate includes a polarizing element, a first adhesive layer formed on one surface of the polarizing element, a second adhesive layer formed on the other surface of the polarizing element, a protective film attached to an upper portion of the first adhesive layer, a bonding layer attached to a lower portion of the second adhesive layer, and a luminance enhancement film attached to the bonding layer.
    Type: Grant
    Filed: April 4, 2014
    Date of Patent: April 5, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Sung-Hyun Nam, Ki-Ok Kwon, Kyun-Il Rah
  • Patent number: 9256005
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring in the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: February 9, 2016
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Kyu Park, Sung Soo Yoon, Min Ki Lee, Sae Han Cho
  • Patent number: 9146417
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling of the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: September 29, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, Eun Mi Seo, No Ma Kim, In Ho Hwang, Sung Soo Yoon
  • Publication number: 20140240647
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring in the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: February 25, 2014
    Publication date: August 28, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo HUH, Ki Ok KWON, In Kyu PARK, Sung Soo YOON, Min Ki LEE, Sae Han CHO
  • Publication number: 20140220263
    Abstract: A polarizing plate, a fabrication method thereof, and a display device using the same are provided. The polarizing plate includes a polarizing element, a first adhesive layer formed on one surface of the polarizing element, a second adhesive layer formed on the other surface of the polarizing element, a protective film attached to an upper portion of the first adhesive layer, a bonding layer attached to a lower portion of the second adhesive layer, and a luminance enhancement film attached to the bonding layer.
    Type: Application
    Filed: April 4, 2014
    Publication date: August 7, 2014
    Applicant: LG CHEM, LTD
    Inventors: Sung-Hyun NAM, Ki-Ok KWON, Kyun-Il RAH
  • Patent number: 8792164
    Abstract: A polarizing plate, a fabrication method thereof, and a display device using the same are provided. The polarizing plate includes a polarizing element, a first adhesive layer formed on one surface of the polarizing element, a second adhesive layer formed on the other surface of the polarizing element, a protective film attached to an upper portion of the first adhesive layer, a bonding layer attached to a lower portion of the second adhesive layer, and a luminance enhancement film attached to the bonding layer.
    Type: Grant
    Filed: February 9, 2012
    Date of Patent: July 29, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Hyun Nam, Ki-Ok Kwon
  • Publication number: 20140204317
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: March 19, 2014
    Publication date: July 24, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Ho Hwang, Kyun Il Rah, Min Ki Lee, Sae Han Cho
  • Publication number: 20140168580
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring in the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: February 18, 2014
    Publication date: June 19, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo HUH, Ki Ok KWON, In Kyu PARK, Sung Soo YOON, Min Ki LEE, Sae Han CHO
  • Publication number: 20140160406
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as durability, water resistance, workability, and light leakage preventing ability. In addition, the polarizing plate prevents curling of the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: February 18, 2014
    Publication date: June 12, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, Eun Mi Seo, No Ma Kim, In Ho Hwang, Sung Soo Yoon
  • Publication number: 20140160405
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate has lighter weight, a smaller thickness, and excellent physical properties such as water resistance, workability, durability, and light leakage preventing ability. In addition, the polarizing plate prevents curling occurring at the polarizing plate or a polarizer in formation thereof, and has excellent thermal resistance or thermal shock resistance.
    Type: Application
    Filed: February 14, 2014
    Publication date: June 12, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Eun Soo Huh, Ki Ok Kwon, In Ho Hwang, Kyun II Rah, Min Ki Lee, Sae Han Cho
  • Patent number: 8609764
    Abstract: There is provided a method of producing a polyvinyl alcohol (PVA) film polarizer having an excellent durability, the method comprising dyeing, cross-linking, stretching, and drying, wherein additives containing phosphorus is inputted into one or more of the dyeing, the cross-linking, and the stretching. In this case, the additives containing phosphorus may be selected from a group consisting of a phosphoric acid, potassium phosphate monobasic, potassium phosphate dibasic, magnesium phosphate dibasic, sodium phosphate monobasic, and ammonium phosphate monobasic. An amount of the additives containing phosphorus in an added solution may be 0.01 to 15 wt %. As described above, when inputting the additives containing phosphorus while producing a polarizer, cross-linking between iodine and a polymer matrix becomes strong due to the phosphorus contained in the additives, thereby producing a polarizer having an excellent durability, and particularly, an excellent thermal stability.
    Type: Grant
    Filed: February 4, 2008
    Date of Patent: December 17, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Seung Ae Kim, Ki Ok Kwon, Kyun Il Rah
  • Publication number: 20120320317
    Abstract: The present invention relates to a polarizing plate and a liquid crystal display device. The polarizing plate, which is lightweight and has a small thickness and excellent physical properties including durability, water resistance, workability, pressure-sensitive adhesion and a light leakage prevention effect; and the liquid crystal display device including the same may be provided.
    Type: Application
    Filed: February 28, 2011
    Publication date: December 20, 2012
    Inventors: Sung Soo Yoon, Ki Ok Kwon, No Ma Kim, In Ho Hwang, Sung Hyun Nam, In Kyu Park, Kyun Il Rah, Min Ki Lee
  • Publication number: 20120314161
    Abstract: Provided are a polarizing plate and a liquid crystal display device. The polarizing plate, which is lightweight and has a thin thickness and excellent physical properties including durability, water resistance, workability, pressure-sensitive adhesion and a light leakage prevention effect; and the liquid crystal display device including the same are provided.
    Type: Application
    Filed: February 28, 2011
    Publication date: December 13, 2012
    Inventors: In Kyu Park, Ki Ok Kwon, No Ma Kim, In Ho Hwang, Sung Hyun Nam, Sung Soo Yoon, Kyun Il Rah, Min Ki Lee