Patents by Inventor Boo-Kyung Kim

Boo-Kyung Kim 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: 10234599
    Abstract: Disclosed herein is an anti-reflective film comprising: a hard coating layer; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein a ratio of an average particle diameter of the solid inorganic nanoparticles to an average particle diameter of the hollow inorganic nanoparticles is 0.26 to 0.
    Type: Grant
    Filed: August 3, 2017
    Date of Patent: March 19, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Jin Seok Byun, Jae Young Kim, Yeong Rae Chang, Boo Kyung Kim, Seok Hoon Jang
  • Patent number: 10222510
    Abstract: Disclosed herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin, and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein the low-refractive layer includes a first layer containing at least 70 vol % of the entire solid inorganic nanoparticles and a second layer containing at least 70 vol % of the entire hollow inorganic nanoparticles, and at the time of fitting polarization ellipticity measured by ellipsometry for the first layer or/and the second layer included in the low-refractive layer using a Cauchy model represented by the following General Equation 1, the second layer satisfies a predetermined condition.
    Type: Grant
    Filed: March 9, 2017
    Date of Patent: March 5, 2019
    Assignee: LG CHEM, LTD
    Inventors: In Young Song, Jin Seok Byun, Boo Kyung Kim, Seok Hoon Jang, Yeong Rae Chang, Sung Joon Oh
  • Publication number: 20190025467
    Abstract: The present invention relates to an antireflection film which exhibits one extremum at a thickness of 35 nm to 55 nm from the surface and exhibiting one extremum at a thickness of 85 nm to 105 nm from the surface in a graph showing the result of Fourier transform analysis for the result of X-ray reflectivity measurement using Cu—K-alpha rays.
    Type: Application
    Filed: March 9, 2017
    Publication date: January 24, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Jin Seok BYUN, Ja Pil KOO, Boo Kyung KIM, Seok Hoon JANG, Yeong Rae CHANG
  • Publication number: 20190011602
    Abstract: The present invention relates to an antireflection film including a low reflective index layer and a hard coating layer, the low reflective index layer including: a binder resin including a crosslinked polymer of a photo-polymerizable compound and polysilsesquioxane having at least one reactive functional group substituted thereon; and inorganic microparticles dispersed in the binder resin, wherein a ratio of internal haze (Hi) to total haze (Ha) is 97% or less and a variation in color coordinate value (b*) before and after alkaline treatment is 0.7 or less.
    Type: Application
    Filed: March 3, 2017
    Publication date: January 10, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Boo Kyung KIM, Jin Seok BYUN, In Young SONG, Yeong Rae CHANG, Seok Hoon JANG
  • Publication number: 20190004214
    Abstract: The present invention relates to an antireflection film including a low refractive index layer and a hard coating layer, the low refractive index layer including: a binder resin containing a crosslinked polymer of a photopolymerizable compound and a polysilsesquioxane substituted with one or more reactive functional groups; and inorganic fine particles dispersed in the binder resin, wherein a 10-point average roughness (Rz) of the shape of irregularities on the surface of the low refractive index layer is 0.05 ?m to 0.2 ?m.
    Type: Application
    Filed: March 9, 2017
    Publication date: January 3, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Boo Kyung KIM, Yeong Rae CHANG, Jae Hoon SHIM, Jin Young PARK, Jae Pil KOO
  • Publication number: 20180364396
    Abstract: The present invention relates to an antireflection film including: a hard coating layer in which center line average roughness (Ra) of the surface is 1.2 nm or less and surface energy is 34 mN/m or less; and a low refractive index layer which is formed on the hard coating layer.
    Type: Application
    Filed: December 5, 2016
    Publication date: December 20, 2018
    Inventors: Seok Hoon JANG, Heon KIM, Boo Kyung KIM, Jin Seok BYUN, Yeong Rae CHANG
  • Publication number: 20180265710
    Abstract: The present invention relates to a photocurable coating composition for forming a low refractive layer, a method for preparing an antireflection film using the photocurable coating composition, and an anti-reflective film prepared by using the photocurable coating composition. According to the present invention, a low refractive layer is formed of a photocurable coating composition containing two or more types of photo-polymerizable compounds, a photoinitiator, surface-treated hollow inorganic nanoparticles, and surface-treated solid inorganic nanoparticles.
    Type: Application
    Filed: February 14, 2017
    Publication date: September 20, 2018
    Inventors: Jin Seok BYUN, Jae Young KIM, Boo Kyung KIM, Seok Hoon JANG, Yeong Rae CHANG
  • Publication number: 20180231687
    Abstract: The present invention relates to an anti-reflective film exhibiting one or more peaks at a scattering vector (qmax) of 0.0758 to 0.1256 nm?1, in a graph showing a log value of scattering intensity to a scattering vector defined in small-angle X-ray scattering.
    Type: Application
    Filed: March 9, 2017
    Publication date: August 16, 2018
    Inventors: Jin Seok BYUN, Jeong Kyu LEE, Boo Kyung KIM, Seok Hoon JANG, Yeong Rae CHANG
  • Publication number: 20180230316
    Abstract: The present invention relates to an anti-reflective film comprising: a hard coating layer and a low refractive layer which comprises a binder resin comprising a cross-linked polymer of a photopolymerizable compound, two or more kinds of fluorine-containing compounds comprising photoreactive functional groups, and polysilsesquioxane substituted by one or more reactive functional groups; and inorganic fine particles dispersed in the binder resin.
    Type: Application
    Filed: March 10, 2017
    Publication date: August 16, 2018
    Inventors: Boo Kyung KIM, Yeong Rae CHANG, Dong Hyun KIM, Hyun Kyung YOON, Seok Hoon JANG, Yu Ra LEE, Jin Seok BYUN
  • Publication number: 20180231688
    Abstract: Described herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles dispersed in the binder resin. The hollow and solid inorganic particles are dispersed in the low-refractive layer such that the amount of the solid inorganic nanoparticles positioned close to an interface between the hard coating layer and the low-refractive layer is larger than that of the hollow inorganic nanoparticles. Also described is a manufacturing method of the anti-reflective film including: applying a resin composition containing a photopolymerizable compound or a (co)polymer thereof, a fluorine-containing compound including a photoreactive functional group, a photoinitiator, hollow inorganic nanoparticles, and solid inorganic nanoparticles on a hard coating layer, and drying the applied resin composition at a temperature of 35° C. to 100° C.; and photocuring the dried resin composition.
    Type: Application
    Filed: November 3, 2016
    Publication date: August 16, 2018
    Inventors: Jin Seok BYUN, Heon KIM, Boo Kyung KIM, Seok Hoon JANG, Yeong Rae CHANG
  • Publication number: 20180230317
    Abstract: The present invention relates to an antireflection film which includes a hard coating layer and a low refractive index layer formed on the hard coating layer, wherein a roughness kurtosis (Rku) of the concavo-convex shape of the surface is greater than 3.5 and less than 6, a Swedish height (H) of the concavo-convex shape of the surface is greater than 20 nm and less than 200 nm, and the light transmittance in a wavelength region of 380 nm to 780 nm is 94% or more, and a display device comprising the antireflection film.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 16, 2018
    Inventors: Jung Hyun SEO, Boo Kyung KIM, Yeong Rae CHANG, Seok Hoon JANG
  • Publication number: 20180223113
    Abstract: The present invention relates to an antireflection film which includes a hard coating layer and a low refractive index layer formed on the hard coating layer, wherein a roughness skewness (Rsk) of the concavo-convex shape of the surface is greater than 0.5 and less than 5, and a slope angle of the concavo-convex shape of the surface is greater than 0.01 degree and less than 0.2 degree, and a display device comprising the antireflection film.
    Type: Application
    Filed: February 10, 2017
    Publication date: August 9, 2018
    Inventors: Jung Hyun SEO, Yeong Rae CHANG, Jae Hoon SHIM, Jin Young PARK, Jae Pil KOO, Boo Kyung KIM
  • Publication number: 20180217297
    Abstract: The present invention relates to an antireflection film. The antireflection film includes a low refractive index layer having excellent alkali resistance and exhibiting remarkably improved mechanical properties such as scratch resistance and impact resistance as well as reduction of a glare phenomenon, and a base film exhibiting excellent mechanical strength and water resistance in spite of a thin thickness and having no fear of interference fringes occurring. Therefore, such antireflection film can be used as a protective film of a polarizing plate or used as any other component so as to provide a thin display device, and furthermore, can effectively prevent the glare phenomenon of the display device, and can more improve the durability and lifespan thereof.
    Type: Application
    Filed: December 27, 2016
    Publication date: August 2, 2018
    Inventors: Boo Kyung KIM, Yeong Rae CHANG, Seok Hoon JANG, Jin Seok BYUN
  • Publication number: 20180194912
    Abstract: The present invention relates to a photocurable coating composition including: a photopolymerizable compound; inorganic fine particles; two or more kinds of fluorine-containing compounds including photoreactive functional groups; and a photopolymerization initiator, a low refractive layer including the photocured product of the photocurable coating composition, and an anti-reflective film including the low refractive layer.
    Type: Application
    Filed: September 21, 2016
    Publication date: July 12, 2018
    Inventors: Boo Kyung KIM, Seok Hoon JANG, Jin Seok BYUN, Yeong Rae CHANG, Heon KIM
  • Publication number: 20180179395
    Abstract: The present invention relates to an antireflection film which includes a hard coating layer and a low refractive index layer formed on the hard coating layer, wherein the sum of the volume of the convex portion of the peak equal to or higher than the average line is less than 0.03 mm3 in the surface area of 1.47 mm2, and the sum of the volume of the concave portion of the valley equal to or lower than the average line is less than 0.03 mm3 in the surface area of 1.47 mm2, and a display device comprising the antireflection film.
    Type: Application
    Filed: February 10, 2017
    Publication date: June 28, 2018
    Inventors: Jung Hyun SEO, Boo Kyung KIM, Yeong Rae CHANG, Jae Hoon SHIM, Jin Young PARK, Jae Pil KOO
  • Publication number: 20180106929
    Abstract: Disclosed herein is an anti-reflective film including: a hard coating layer; and a low-refractive layer containing a binder resin, and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein the low-refractive layer includes a first layer containing at least 70 vol % of the entire solid inorganic nanoparticles and a second layer containing at least 70 vol % of the entire hollow inorganic nanoparticles, and at the time of fitting polarization ellipticity measured by ellipsometry for the first layer or/and the second layer included in the low-refractive layer using a Cauchy model represented by the following General Equation 1, the second layer satisfies a predetermined condition.
    Type: Application
    Filed: March 9, 2017
    Publication date: April 19, 2018
    Inventors: In Young SONG, Jin Seok BYUN, Boo Kyung KIM, Seok Hoon JANG, Yeong Rae CHANG, Sung Joon OH
  • Publication number: 20180088254
    Abstract: The present invention relates to a low refractive layer and an anti-reflective film comprising the same. The low refractive layer can exhibit excellent optical properties such as a low reflectance and a high light transmittance, and excellent mechanical properties such as high wear resistance and scratch resistance at the same time. In particular, due to the excellent alkali resistance, the low refractive layer can maintain excellent physical properties even after alkali treatment. Therefore, when introducing a low refractive layer to the display device, it is expected that the production process can be simplified and further the production rate and the productivity can significantly increase.
    Type: Application
    Filed: August 18, 2016
    Publication date: March 29, 2018
    Inventors: Boo Kyung KIM, Yeong Rae CHANG, Seok Hoon JANG, Jin Seok BYUN
  • Publication number: 20180051148
    Abstract: The present invention relates to a photocurable coating composition for forming a low refractive index layer, including: a photopolymerizable compound; inorganic fine particles; a polysilsesquioxane substituted with one or more reactive functional groups; a fluorine-based compound containing a photoreactive functional group; and a photopolymerization initiator, wherein the polysilsesquioxane substituted with one or more reactive functional groups is contained in an amount of 0.5 to 25 parts by weight based on 100 parts by weight of the photopolymerizable compound, a low refractive index layer including a photo-cured product of the photocurable coating composition, and an antireflection film including the low refractive index layer.
    Type: Application
    Filed: August 11, 2016
    Publication date: February 22, 2018
    Inventors: Boo Kyung KIM, Hye Min KIM, Jae Hoon SHIM, Soon Hwa JUNG
  • Patent number: 9896596
    Abstract: Disclosed is a plastic film exhibiting excellent physical properties including a high level of hardness, high scratch resistance, and low reflection. Exhibiting a high level of hardness, scratch resistance, impact resistance, low reflectivity, and high transparency, the plastic film can be used as a substitute for a cover plate made of glass or reinforced glass.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: February 20, 2018
    Assignee: LG CHEM, LTD.
    Inventors: Soon Hwa Jung, Boo Kyung Kim, Seok Hoon Jang, Joon Koo Kang, Jae Hoon Shim, Seung Jung Lee, Yeong Rae Chang, Sung Don Hong
  • Publication number: 20180017713
    Abstract: Disclosed herein is an anti-reflective film comprising: a hard coating layer; and a low-refractive layer containing a binder resin and hollow inorganic nanoparticles and solid inorganic nanoparticles which are dispersed in the binder resin, wherein a ratio of an average particle diameter of the solid inorganic nanoparticles to an average particle diameter of the hollow inorganic nanoparticles is 0.26 to 0.
    Type: Application
    Filed: August 3, 2017
    Publication date: January 18, 2018
    Inventors: Jin Seok BYUN, Jae Young KIM, Yeong Rae CHANG, Boo Kyung KIM, Seok Hoon JANG