Patents by Inventor Kwang-Seung Park

Kwang-Seung Park 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).

  • Publication number: 20160244646
    Abstract: The present invention relates to a radical-curable adhesive composition including a (A) radical-polymerizable compound that includes at least one hydrophilic functional group in the molecule in greater than 30 parts by weight and less than or equal to 93 parts by weight; a (B) multifunctional (meth)acryl-based compound in 5 to 40 parts by weight; a (C) phosphate compound that includes one or two (meth)acrylic groups in the molecule in 1 to 40 parts by weight; and a (D) radical initiator in 0.5 to 20 parts by weight, with respect to 100 parts by weight of the radical-curable adhesive composition, and a polarizing plate and an optical member including the radical-curable adhesive composition.
    Type: Application
    Filed: September 29, 2014
    Publication date: August 25, 2016
    Inventors: Eun-Soo HUH, Kwang-Seung PARK, Mi-Rin LEE, Jun-Wuk PARK
  • Publication number: 20160244644
    Abstract: There are provided a radically curable adhesive composition and a polarizing plate including the radically curable adhesive composition. The radically curable adhesive composition includes, based on 100 parts by weight thereof, 40 to 80 parts by weight of a first compound represented by the following Formula 1; 15 to 50 parts by weight of a second compound including at least one carboxy group; and 0.5 to 10 parts by weight of a radical initiator.
    Type: Application
    Filed: June 13, 2014
    Publication date: August 25, 2016
    Inventors: Kwang-Seung PARK, Mi-Rin LEE, Eun-Mi SEO, Eun-Soo HUH, Yong-Il CHO
  • Publication number: 20160238742
    Abstract: The present invention relates to a polarizing plate including a polarizer; and a protective layer formed on at least one surface of the polarizer, in which the protective layer is a cured product of a radical curable composition having a hydroxy value of 500 mg·KOH/g or more, and an image display device including the same.
    Type: Application
    Filed: September 29, 2014
    Publication date: August 18, 2016
    Inventors: Eun-Soo HUH, Kwang-Seung PARK, Mi-Rin LEE, Sung-Hyun KIM, Jun-Wuk PARK
  • Publication number: 20160237317
    Abstract: The present invention relates to a radical-curable adhesive composition including an acid anhydride-based compound having at least one carbon-carbon unsaturated double bond, a vinyl-based compound having at least one electron donor group, a radical initiator, and a cation generator, wherein the content of the acid anhydride-based compound and the vinyl-based compound is 0.8 to 1.0 by an equivalence ratio of mixing represented by the following Equation (1), and a polarizing plate and an optical member including the radical-curable adhesive composition: Equivalence Ratio of Mixing=M/N,??Equation(1): and in Equation (1), M is the number of carbon-carbon unsaturated double bonds capable of participating in polymerization in the molecule including an acid anhydride group included in the acid anhydride-based compound; and N is the number of carbon-carbon unsaturated double bonds capable of participating in polymerization in the molecule included in the vinyl-based compound.
    Type: Application
    Filed: September 19, 2014
    Publication date: August 18, 2016
    Inventors: Kwang-Seung PARK, Mi-Rin LEE, Jun-Wuk PARK, Eun-Soo HUH
  • Publication number: 20160238745
    Abstract: The present disclosure relates to a polarizing plate excellent durability even under high humidity conditions and more particularly, to a polarizing plate including a polarizer and a protective layer formed on at least one surface of the polarizer, wherein the protective layer is formed of a cured product of a radically curable composition including a compound represented by the following [Chemical Formula 1]; a vinyl ether compound; a carboxylic acid compound including at least one unsaturated double bond; and a radical initiator.
    Type: Application
    Filed: June 13, 2014
    Publication date: August 18, 2016
    Inventors: Mi-Rin LEE, Kwang-Seung PARK, Jun-Wuk PARK, Eun-Soo HUH
  • Publication number: 20160238767
    Abstract: The present invention relates to a polarizing plate including: a polarizer; a first protective layer formed on at least one surface of the polarizer; and a second protective layer formed on a surface opposite to a surface adjacent to a polarizer of the first protective layer, in which the first protective layer is a cured product of a radical curable composition, and the second protective layer is a cured product of a cationic curable composition, a manufacturing method thereof, and an image display device including the same.
    Type: Application
    Filed: September 24, 2014
    Publication date: August 18, 2016
    Inventors: Kwang-Seung PARK, Hae-Sung CHO, Hyun-Hee SON, Kyun-ll RAH, Jun-Wuk PARK, Eun-Soo HUH, Mi-Rin LEE, Sung-Hyun JEON
  • Publication number: 20160230053
    Abstract: The present invention relates to a radical-curable adhesive composition including a radical-polymerizable first compound that includes at least two hydroxyl groups in the molecule, and having hydroxyl value of 500 mg KOH/g or greater, and a polarizing plate and an optical member including the radical-curable adhesive composition.
    Type: Application
    Filed: September 29, 2014
    Publication date: August 11, 2016
    Inventors: Eun-Soo HUH, Kwang-Seung PARK, Mi-Rin LEE, Sung-Hyun KIM, Jun-Wuk PARK
  • Publication number: 20160230961
    Abstract: The invention described in the present specification relates to a color conversion film including a color conversion layer including a resin matrix; and an organic fluorescent substance dispersed in the resin matrix, and absorbing blue or green light and emitting light having a wavelength different from the absorbing light; and an adhesive layer provided on at least one surface of the color conversion layer, and including a curing material of a radical polymerizable compound having a molecular weight of 300 or higher prior to curing, and a back light unit and a display apparatus including the same.
    Type: Application
    Filed: February 4, 2016
    Publication date: August 11, 2016
    Inventors: Joo Yeon Seo, Kwang Seung Park, Byeong In Ahn, Dong Mok Shin, Nari Kim, Ji Ho Kim
  • Publication number: 20160229170
    Abstract: The present invention relates to a method for manufacturing a single-faced thin polarizing plate, including: supplying a process film to one surface of a polarizer having a thickness of 50 ?m or less; supplying a protection film to the other surface of the polarizer; forming an adhesive layer by supplying an adhesive composition between the polarizer and the protection film; pressing a laminate of the process film/the polarizer/the protection film by disposing a pair of pressing units on a surface of each of the process film and the protection film; and stripping the process film, in which stripping force between the polarizer and the process film is 1.0 N or less.
    Type: Application
    Filed: August 29, 2014
    Publication date: August 11, 2016
    Inventors: Hae-Sung CHO, Sung-Hyun KIM, Hyun-Hee SON, Dong-Kyun HA, Kwang-Seung PARK, Nam-Jeong LEE, Jun-Wuk PARK, Tae-Jun HWANG
  • Publication number: 20160216423
    Abstract: The present invention relates to a polarizing plate including a polarizer, and a protective layer formed on at least one surface of the polarizer, in which the protective layer is a cured product of (A) a first compound represented by the following [Formula 1]; (B) a radical curable second compound including at least one carboxyl group conjugated to an unsaturated double bond between carbons present at a side chain in a molecule thereof; and (C) a radical curable composition including a radical initiator, and a liquid crystal display device including the same.
    Type: Application
    Filed: September 19, 2014
    Publication date: July 28, 2016
    Inventors: Mi Rin LEE, Kwang Seung PARK, Jun Wuk PARK, Eun Soo HUH
  • Publication number: 20160216411
    Abstract: The present invention relates to a polarizing plate including: a polarizer; and a protective layer formed on at least one surface of the polarizer, in which the protective layer is a cured product of a radical curable composition including: (A) a radical polymerizable compound having at least one hydrophilic functional group in a molecule thereof; (B) a phosphate-based compound having three (meth)acryl groups in a molecule thereof; and (C) a radical initiator, and an image display device including the same.
    Type: Application
    Filed: September 29, 2014
    Publication date: July 28, 2016
    Applicant: LG CHEM, LTD.
    Inventors: Eun-Soo HUH, Kwang-Seung PARK, Mi-Rin LEE, Jun-Wuk PARK
  • Publication number: 20160054480
    Abstract: There is provided a polarizing plate including a polarizer and a protective layer formed on at least one surface of the polarizer. The protective layer is formed of a cured product of a radically curable composition including: a first compound represented by Formula 1; a second compound including at least one carboxy group; and a radical initiator.
    Type: Application
    Filed: June 13, 2014
    Publication date: February 25, 2016
    Inventor: Kwang-Seung PARK
  • Publication number: 20160003983
    Abstract: The present disclosure relates to a polarizing plate including: a polarizer; and a protective layer formed on at least one surface of the polarizer, wherein the protective layer is formed of a composition for a polarizing plate protective layer, including a curable compound, a non-curable polymer, and a polymerization initiator, the curable compound being at least one selected from a group consisting of a compound including a functional group containing at least one of O, N and F atoms and having an ethylenically unsaturated bond and a ring-opening polymerizable compound, and the non-curable polymer including a functional group containing at least one of O, N and F atoms in a side chain thereof.
    Type: Application
    Filed: June 26, 2014
    Publication date: January 7, 2016
    Inventors: Kwang-Seung PARK, Hae-Sung CHO, Hyun-Hee SON, Nam-Jeong LEE, Jun-Wuk PARK, Eun-Soo HUH, Mi-Rin LEE, Sung-Hyun JEON
  • Publication number: 20150378063
    Abstract: The present invention relates to a polarizing plate including a polarizer; and a protective layer formed on at least one surface of the polarizer, in which the protective layer is a cured product of a radical curable composition including (A) a first compound represented by [Formula 1], (B) a radical curable second compound having two or more of each of a benzene ring, a (meth)acryloyl group, and a carboxy group in a molecule thereof, and (C) a radical initiator, and an image display device including the same.
    Type: Application
    Filed: September 19, 2014
    Publication date: December 31, 2015
    Inventors: Kwang-Seung PARK, Mi-Rin LEE, Jun-Wuk PARK, Eun-Soo HUH
  • Publication number: 20150337180
    Abstract: The present invention relates to a radical-curable adhesive composition including a first compound represented by the following [Chemical Formula I]; a radical-curable second compound having two or more benzene rings, (meth)acryloyl groups and carboxyl groups each in the molecule; and a radical initiator, and a polarizing plate including the radical-curable adhesive composition.
    Type: Application
    Filed: September 19, 2014
    Publication date: November 26, 2015
    Applicant: LG Chem, Ltd.
    Inventors: Kwang-Seung PARK, Mi-Rin LEE, Jun-Wuk PARK, Eun-Soo HUH
  • Publication number: 20150277008
    Abstract: A method of manufacturing a double-sided polarizing plate and a double-sided polarizing plate manufactured using the same are provided. The method of manufacturing a double-sided polarizing plate includes attaching transparent films to both surfaces of a polarizer by means of adhesive layers, irradiating the adhesive layers with active energy rays emitted by an energy source disposed in a single direction with respect to the polarizer, and thermally treating a surface of the transparent film disposed opposite to the energy source at a temperature of 25° C. to 65° C.
    Type: Application
    Filed: February 21, 2014
    Publication date: October 1, 2015
    Inventors: Eun-Soo Huh, Eun-Mi Seo, Kwang-Seung Park, Mi-Rin Lee, Yong-Il Cho
  • Publication number: 20150260893
    Abstract: A method of manufacturing a double-sided polarizing plate and a double-sided polarizing plate manufactured using the same are provided. The method of manufacturing a double-sided polarizing plate includes attaching transparent films to both surfaces of a polarizer via adhesive layers; irradiating the adhesive layers with active energy rays in an amount of light of 200 mJ/cm2 or more through an energy source located in a single direction, based on the polarizer; and thermally treating a surface of the transparent film provided to oppose the energy source at a temperature of from 10° C. to 25° C.
    Type: Application
    Filed: March 28, 2014
    Publication date: September 17, 2015
    Inventors: Eun-Soo Huh, Eun-Mi Seo, Kwang-Seung Park, Mi-Rin Lee, Yong-Il Cho
  • Patent number: 9134463
    Abstract: The present invention relates to an optical film having improved optical performance and to a backlight unit comprising the same. More particularly, the present invention relates to a microlens array (MLA) sheet which comprises a base unit and a lens unit formed on one side of the base unit, wherein the lens unit consists of a plurality of conical lenses. Existing hemispherical microlens array sheets have limitations in terms of improving luminance, and therefore cannot replace prism sheets in high luminance product s. However, the microlens array sheet consisting of conical lenses of the present invention can improve both luminance and viewing angle characteristics.
    Type: Grant
    Filed: July 14, 2011
    Date of Patent: September 15, 2015
    Assignee: LG CHEM, LTD.
    Inventors: Byung-Mook Kim, Kwang-Seung Park, Byung-Su Park, Yune-Hyoun Kim, Sang-Choll Han, Jin-Hyun Kim
  • Patent number: 8870399
    Abstract: Provided is a backlight unit. The backlight unit includes a light source, an optical member configured to uniformly distribute light emitted from the light source, and at least two condensing films configured to condense light from the optical member. Hetero-conic lenses are two-dimensionally arranged on a surface of each of the condensing films, and each of the hetero-conic lenses is formed by combining a first conic lens expressed by Formula (1) below and a second conic lens expressed by Formula (2) below: y = H 1 - x 2 / r 1 1 + 1 - ( 1 + k 1 ) ? ( 1 / r 1 ) 2 ? x 2 ? ? ( 0 ? y ? y 0 ) Formula ? ? ( 1 ) y = H 2 - x 2 / r 2 1 + 1 - ( 1 + k 2 ) ? ( 1 / r 2 ) 2 ? x 2 + y 0 ? ? ( y 0 ? y ? H 2 ) .
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: October 28, 2014
    Assignee: LG Chem, Ltd.
    Inventors: Yune-Hyoun Kim, Kwang-Seung Park, Sang-Choll Han, Sang-Eun An
  • Publication number: 20140313697
    Abstract: There are provided a micro lens array (MLA) sheet including a plurality of lens units two-dimensionally arranged thereon, wherein each lens unit has a conic lens shape of which a vertical cross-section taken in a lens center is represented by Expression 1, and a backlight unit including the same.
    Type: Application
    Filed: January 13, 2012
    Publication date: October 23, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Byoung-Mook Kim, Kwang-Seung Park, Byung-Su Park, Yune-Hyoun Kim, Sang-Choll Han, Jin-Hyun Kim