Patents by Inventor Sung Hyun Nam

Sung Hyun Nam 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: 10647098
    Abstract: The present application relates to a method for preparing a base film, a laminate or a polarizing film. The present application can provide an elongatable base film which simultaneously maintains elongation and recovery rates at proper levels and guarantees water resistance, and thus can be effectively applied in the preparation of, for example, a polarizing film. The present application can also provide a laminate using the film or a method for preparing a polarizing film using the base film. The base film can be effectively applied in the preparation of a polarizing film having an excellent function, such as polarization performance, while having a thickness of, for example, about 10 ?m or less, about 8 ?m or less, about 7 ?m or less, about 6 ?m or less, or about 5 ?m or less.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: May 12, 2020
    Assignee: LG Chem, Ltd.
    Inventors: Se Woo Yang, Sung Hyun Nam, Kyun Il Rah
  • Patent number: 10649271
    Abstract: The present application relates to a polarizing plate and a display device. In the present application, a polarizing plate can be provided, which can be applied to a display device comprising a highly reflective panel to solve disadvantages while maintaining advantages of the device. In the present application, a display device comprising the polarizing plate and the highly reflective panel can also be provided.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: May 12, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hyun Nam, Kyung Ki Hong, Yeong Rae Chang, Heon Kim, Kyun Il Rah, Jong Hyun Jung, Byung Sun Lee, Eung Jin Jang, Jin Yong Park, Deok Woo Park, Ji Young Kim
  • Patent number: 10634835
    Abstract: The present application relates to a polarizing plate and a display device. In the present application, a polarizing plate can be provided, which can be applied to a display device comprising a highly reflective panel to solve disadvantages while maintaining advantages of the device. In the present application, a display device comprising the polarizing plate and the highly reflective panel can also be provided.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: April 28, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hyun Nam, Kyun Il Rah, Byung Sun Lee, Jong Hyun Jung, Ji Young Kim
  • Publication number: 20200046269
    Abstract: A apparatus for estimating concentration may include: a spectrum obtainer configured to obtain Raman spectra of an object; and a processor configured to extract, from the Raman spectra, at least one analyte spectrum related to an analyte and at least one non-analyte spectrum related to a biological component other than the analyte, and estimate concentration of the analyte based on a first area under a curve of the at least one analyte spectrum and a second area under a curve of the at least one non-analyte spectrum.
    Type: Application
    Filed: July 31, 2019
    Publication date: February 13, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yun S. PARK, Sung Hyun NAM, Woo Chang LEE, Ho Jun CHANG
  • Patent number: 10527769
    Abstract: The present invention relates to a method for manufacturing a polarizing plate, the method including: preparing a polarizing plate where a protection film is laminated on one surface of a polyvinyl alcohol-based polarizer dyed with at least one or more of iodine and dichromatic dyes; and forming a depolarization region having single transmittance of 80% or more at a wavelength band in a range of 400 nm to 800 nm by bringing a decoloring solution including 1 to 30 wt % of a decolorant into local contact with the other surface of the polarizer, and a polarizing plate manufactured by using the same.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: January 7, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Byung Sun Lee, Ji Young Kim, Sung Hyun Nam, Kyun Il Rah
  • Patent number: 10451916
    Abstract: The present invention relates to a polarizing plate including a water-based adhesive layer, a primer layer, and a polyethylene terephthalate protection film sequentially provided on at least one surface of a polarizer, in which the water-based adhesive layer is formed by using a water-based adhesive including a polyvinyl alcohol-based resin, an amine-based metal compound, and a pH adjuster, and the pH adjuster includes epoxy (meth)acrylate, alcohol, and acid, and a method for manufacturing the same.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: October 22, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sung Hyun Nam, Seunghee Nam, Kyun II Rah, Dae Woong Lee
  • Patent number: 10451915
    Abstract: The present invention relates to a polarizing plate including a polyethylene terephthalate film and having an excellent optical property, and a method for manufacturing the same, and the polarizing plate of the present invention includes: a water-based adhesive layer, a primer layer, and a polyethylene terephthalate protection film sequentially provided on at least one surface of a polarizer, in which the water-based adhesive layer is formed by using a water-based adhesive including a polyvinyl alcohol-based resin and a glyoxalate crosslinking agent at a weight ratio of 100:5 to 100:50, and the primer layer is formed by using a primer composition including a polyester-based compound and an acryl-based compound.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: October 22, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sung Hyun Nam, Seunghee Nam, Kyun Il Rah, Dae Woong Lee
  • Patent number: 10436962
    Abstract: The present invention relates to a method of manufacturing a polarizer, including: preparing a polyvinyl alcohol-based polarizer dyed with one or more of iodine and dichromatic dyes; and forming a depolarization region having simple substance transmittance of 80% or more in a wavelength band of 400 nm to 800 nm by bringing a decoloring solution including 1 wt % to 30 wt % of a decolorant into local contact with some regions of the polarizer, and a polarizer manufactured using the same.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: October 8, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Byung-Sun Lee, Sung-Hyun Nam, Kyun-Il Rah
  • Patent number: 10359553
    Abstract: The present invention relates to a method for manufacturing a polarizer including preparing a polyvinyl alcohol-based polarizer dyed with at least one of iodine and dichroic dye; forming a depolarized area by locally bringing a bleaching solution into contact with some areas of the polarizer; and acid treating at least the depolarized area using an acid solution, a polarizer and a polarizing plate manufactured by using the same.
    Type: Grant
    Filed: March 25, 2015
    Date of Patent: July 23, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Byung Sun Lee, Sung Hyun Nam, Kyun Il Rah
  • Patent number: 10353125
    Abstract: The present disclosure relates to a polarizing plate including an adhesive layer, a primer layer and a polyethylene terephthalate film which are sequentially formed on at least one side of a polarizer, wherein the adhesive layer in the present disclosure is formed by an active energy ray-curable adhesive including a first epoxy compound of which a homopolymer has a glass transition temperature of 120° C. or higher, a second epoxy compound of which a homopolymer has a glass transition temperature of 60° C. or lower, and a cationic photopolymerization initiator, and wherein the primer layer is formed by a primer composition including one or more binder resins selected from the group consisting of polyester and polyvinyl alcohol-based resins, and one or more cross-linking agents selected from the group consisting of acrylic cross-linking agents, epoxy-based cross-linking agents and polyvinyl alcohol-based cross-linking agents.
    Type: Grant
    Filed: June 18, 2014
    Date of Patent: July 16, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Sung-Hyun Nam, Eun-Mi Seo, Seung-Hee Nam, Dae-Woong Lee, Kyun-Il Rah
  • Patent number: 10302833
    Abstract: The present application relates to a polarizer, a polarizing plate and a display device. The present application can provide a polarizer or a polarizing plate that is applied to various types of display devices, particularly to a display device having a highly reflective liquid crystal panel and that shows excellent characteristics. In addition, the present application can provide a display device including the polarizer or the polarizing plate.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: May 28, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hyun Nam, Kyung Ki Hong, Eung Jin Jang, Yeong Rae Chang, Heon Kim, Kyun Il Rah, Jong Hyun Jung, Byung Sun Lee, Hong Jun Choi, Moon Soo Park, Sun Kug Kim
  • Publication number: 20190113666
    Abstract: The present invention relates to a method for manufacturing a polarizing plate, the method including: preparing a polarizing plate where a protection film is laminated on one surface of a polyvinyl alcohol-based polarizer dyed with at least one or more of iodine and dichromatic dyes; and forming a depolarization region having single transmittance of 80% or more at a wavelength band in a range of 400 nm to 800 nm by bringing a decoloring solution including 1 to 30 wt % of a decolorant into local contact with the other surface of the polarizer, and a polarizing plate manufactured by using the same.
    Type: Application
    Filed: December 3, 2018
    Publication date: April 18, 2019
    Inventors: Byung Sun LEE, Ji Young KIM, Sung Hyun NAM, Kyun Il RAH
  • Patent number: 10254458
    Abstract: Provided are a base film, a laminate, and a method of forming a polarizing film. Particularly, a base film which may effectively form a polarizing film having a thickness of approximately 10, 8, 7, 6, or 5 ?m or less and exhibiting excellent functions such as polarizing performance, a laminate, and a method of forming the same are provided. Therefore, a polarizing film may be formed by preventing tearing or curling during an elongation process, and easily elongating a polarizing material such as a polyvinylalcohol-based resin.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: April 9, 2019
    Assignee: LG Chem, Ltd.
    Inventors: Se Woo Yang, Sung Hyun Nam, Yoon Tae Hwang, Jong Hyun Jung, Suk Ky Chang, Kyun Il Rah
  • Patent number: 10254457
    Abstract: There is provided a stretched laminate formed by stretching a laminate including: a non-stretched thermoplastic polyurethane film; and a non-stretched polyvinyl alcohol-based film attached to at least one surface of the thermoplastic polyurethane film, wherein the polyvinyl alcohol-based film has a thickness of 10 ?m or less after stretching. In addition, there are provided a method of manufacturing a thin polarizer using the stretched laminate, a thin polarizer manufacturing by the method, and a polarizing plate including the thin polarizer.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: April 9, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Sung-Hyun Nam, Jong-Hyun Jung, Kyun-Il Rah, Hye-Min Yu
  • Patent number: 10215903
    Abstract: The present invention relates to a method for manufacturing a polarizing plate, the method including: preparing a polarizing plate where a protection film is laminated on one surface of a polyvinyl alcohol-based polarizer dyed with at least one or more of iodine and dichromatic dyes; and forming a depolarization region having single transmittance of 80% or more at a wavelength band in a range of 400 nm to 800 nm by bringing a decoloring solution including 1 to 30 wt % of a decolorant into local contact with the other surface of the polarizer, and a polarizing plate manufactured by using the same.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: February 26, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Byung Sun Lee, Ji Young Kim, Sung Hyun Nam, Kyun Il Rah
  • Patent number: 10201943
    Abstract: The present invention relates to a method for manufacturing a polarizing plate, the method comprising the sequential steps of: preparing a polarizing element comprising a polyvinyl alcohol-based polarizer dyed with any one or more of iodine and a dichroic dye; irradiating the polarizing element with light having a specific wavelength selected from a wavelength range of 200 nm to 800 nm; and moistening the polarizing element, and to a polarizing plate manufactured by the method.
    Type: Grant
    Filed: September 26, 2014
    Date of Patent: February 12, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Byung Sun Lee, Sung Hyun Nam, Kyun Il Rah
  • Publication number: 20190025642
    Abstract: The present application relates to a polarizing plate and a display device. In the present application, a polarizing plate can be provided, which can be applied to a display device comprising a highly reflective panel to solve disadvantages while maintaining advantages of the device. In the present application, a display device comprising the polarizing plate and the highly reflective panel can also be provided.
    Type: Application
    Filed: February 3, 2017
    Publication date: January 24, 2019
    Inventors: Sung Hyun NAM, Kyung Ki HONG, Yeong Rae CHANG, Heon KIM, Kyun Il RAH, Jong Hyun JUNG, Byung Sun LEE, Eung Jin JANG, Jin Yong PARK, Deok Woo PARK, Ji Young KIM
  • Publication number: 20190025487
    Abstract: The present application relates to a polarizing plate and a display device. In the present application, a polarizing plate can be provided, which can be applied to a display device comprising a highly reflective panel to solve disadvantages while maintaining advantages of the device. In the present application, a display device comprising the polarizing plate and the highly reflective panel can also be provided.
    Type: Application
    Filed: February 3, 2017
    Publication date: January 24, 2019
    Inventors: Sung Hyun NAM, Kyun Il RAH, Byung Sun LEE, Jong Hyun JUNG, Ji Young KIM
  • Patent number: 10114158
    Abstract: There is provided a stretched laminate formed by stretching a laminate including: a non-stretched high-density polyethylene film; and a non-stretched polyvinyl alcohol-based film attached to at least one surface of the high-density polyethylene film, wherein the polyvinyl alcohol-based film has a thickness of 10 ?m or less after stretching. In addition, there are provided a method of manufacturing a thin polarizer using the stretched laminate, a thin polarizer manufacturing by the method, and a polarizing plate including the thin polarizer.
    Type: Grant
    Filed: June 16, 2014
    Date of Patent: October 30, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hyun Nam, Jong-Hyun Jung, Kyun-Il Rah, Hye-Min Yu
  • Patent number: 10105919
    Abstract: The present invention relates to a method for manufacturing a thin polarizer, the method including: a step of preparing an unstretched polyvinyl alcohol-based film having a thickness of 20 ?m or less, in which a strength applied to stretch the film by 6 times is 4 N or more; and a single stretching step of forming a stretched polyvinyl alcohol-based film having a thickness of 10 ?m or less by stretching the unstretched polyvinyl alcohol-based film solely, and a thin polarizer manufactured by using the same.
    Type: Grant
    Filed: September 25, 2015
    Date of Patent: October 23, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Sung Hyun Nam, Jonghyun Jung, Kyun Il Rah, Hye Min Yu