Patents by Inventor Byeong Ahn

Byeong Ahn 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: 11872531
    Abstract: The present disclosure provides a fluorine-based resin porous membrane exhibiting high mechanical strength and low heat shrinkage rate while having a fine pore size, and a method for preparing the same.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: January 16, 2024
    Assignee: LG CHEM, LTD.
    Inventors: Sungjae Han, Joo Yeon Seo, Byeong In Ahn
  • Patent number: 11654403
    Abstract: The present disclosure relates to a porous fluorine-based resin composite membrane having excellent water repellency and oil repellency, and a method for producing the same.
    Type: Grant
    Filed: July 9, 2019
    Date of Patent: May 23, 2023
    Assignee: LG CHEM, LTD.
    Inventors: Sin Woo Kim, Seijung Park, Byeong In Ahn, Hyun Seong Ko
  • Patent number: 11420162
    Abstract: The present invention provides a method for preparing a porous membrane of a fluorine-based resin having an improved shrinkage while maintaining excellent filtration efficiency and air permeability.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: August 23, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Joo Yeon Seo, Sungjae Han, Byeong In Ahn
  • Patent number: 11344836
    Abstract: A porous fluorine resin film in which a fibril structure is stabilized through impregnation coating of a water-repellent and oil-repellent polymer having a high oil repellency grade, and free shrinkage also proceeds before impregnation and application of the water-repellent and oil-repellent polymer, thereby improving dimensional stability, and a method for preparing the porous fluorine resin film.
    Type: Grant
    Filed: November 23, 2018
    Date of Patent: May 31, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Sin Woo Kim, Byeong In Ahn, Hyun Seong Ko, Seijung Park
  • Patent number: 11299669
    Abstract: The invention described in the present specification relates to a color conversion film 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, wherein the resin matrix includes a thermoplastic resin, and the color conversion film has a light emission peak with a FWHM of 60 nm or less, quantum efficiency of 80% or greater and an absorption coefficient of 30,000 M?1cm?1 or greater at a maximum absorption wavelength when irradiating light having a light emission peak at 450 nm, a FWHM of 40 nm or less and monomodal light emission intensity distribution, a method for preparing the same, and a backlight unit including the color conversion film.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: April 12, 2022
    Assignee: LG CHEM, LTD.
    Inventors: Dong Mok Shin, Sehwan Son, Hoyong Lee, Byeong In Ahn, Du Hyeon Shin, Nari Kim, Ji Ho Kim, Joo Yeon Seo
  • Patent number: 11267180
    Abstract: The present invention relates to an extrusion die and a method for extruding a sheet using the same, and according to one aspect of the present invention, there is provided an extrusion die comprising a storage part configured to hold a raw material, the storage part defining a first width, a pressure part configured to move the raw material through the storage part, a first die defining a second width less than the first width, such that a flow width of the raw material becomes narrower, a second die in fluid communication with the first die, the second die defining a width that increases from the second width to a third width, such that the flow width of the raw material passing through the first die becomes wider and a flow thickness becomes smaller, and a heating part configured to heat the raw material passing through the second die.
    Type: Grant
    Filed: January 26, 2018
    Date of Patent: March 8, 2022
    Inventors: Chae Gyu Lee, Myung Han Lee, Byeong In Ahn, Kyung Hwan Yoon, Chang Kwon Chung
  • Patent number: 11174426
    Abstract: The invention described in the present specification relates to a color conversion film including: a color conversion layer which includes a resin matrix, and an organic fluorescent substance that is dispersed in the resin matrix, and emits light with a wavelength different from that of irradiated light when irradiated with light comprising a wavelength of 450 nm, in which the color conversion film includes a color shift compensation polymer, which allows a color difference change of white light emitted to be within 0.05 when an entire surface of the color conversion film is irradiated with blue light having a luminance of 600 nit at 60° C. for 1,000 hours, in the color conversion layer or in an additional layer disposed on the color conversion layer, a backlight unit including the same, and a display device including the same.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: November 16, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Dong Mok Shin, Nari Kim, Byeong In Ahn, Hyun Seong Ko, Seijung Park, Hye Mi Oh
  • Patent number: 10962705
    Abstract: The invention described in the present specification relates to a color conversion film including a resin matrix; and an organic fluorescent substance, wherein the color conversion film has a light emission peak with FWHM of 70 nm or less when irradiating light having a light emission peak of a 450 nm wavelength, a FWHM of 40 nm or less and monomodal light emission intensity distribution, and a ratio of light emission intensity at 600 nm to light emission intensity at a maximum light emission wavelength is 1:3 or higher, a method for preparing the same, and a back light unit including the color conversion film.
    Type: Grant
    Filed: January 28, 2016
    Date of Patent: March 30, 2021
    Assignee: LG CHEM, LTD.
    Inventors: Dong Mok Shin, Byeong In Ahn, Nari Kim, Ji Ho Kim, Joo Yeon Seo
  • Publication number: 20210039053
    Abstract: The present disclosure provides a fluorine-based resin porous membrane exhibiting high mechanical strength and low heat shrinkage rate while having a fine pore size, and a method for preparing the same.
    Type: Application
    Filed: October 18, 2019
    Publication date: February 11, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Sungjae HAN, Joo Yeon SEO, Byeong In AHN
  • Publication number: 20210023509
    Abstract: The present disclosure relates to a porous fluorine-based resin composite membrane having excellent water repellency and oil repellency, and a method for producing the same.
    Type: Application
    Filed: July 9, 2019
    Publication date: January 28, 2021
    Applicant: LG CHEM, LTD.
    Inventors: Sin Woo KIM, Seijung PARK, Byeong In AHN, Hyun Seong KO
  • Publication number: 20200298184
    Abstract: The present invention provides a method for preparing a porous membrane of a fluorine-based resin having an improved shrinkage while maintaining excellent filtration efficiency and air permeability.
    Type: Application
    Filed: October 24, 2018
    Publication date: September 24, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Joo Yeon SEO, Sungjae HAN, Byeong In AHN
  • Publication number: 20200172695
    Abstract: The present invention relates to a fluororesin porous film in which, based on the total thickness of the fluororesin porous film composed of a single 5 ?m to 300 ?m layer, a thickness ratio of nodes distributed on any one surface shows a difference of 5% or more compared to a thickness ratio of nodes distributed on the other surface forming the remaining part, a method for preparing the same, and a vent filter including the porous film.
    Type: Application
    Filed: August 9, 2018
    Publication date: June 4, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Sei Jung PARK, Kyunghwan YOON, Byeong In AHN, Han Sol YOO
  • Publication number: 20200147537
    Abstract: A porous fluorine resin film in which a fibril structure is stabilized through impregnation coating of a water-repellent and oil-repellent polymer having a high oil repellency grade, and free shrinkage also proceeds before impregnation and application of the water-repellent and oil-repellent polymer, thereby improving dimensional stability, and a method for preparing the porous fluorine resin film.
    Type: Application
    Filed: November 29, 2018
    Publication date: May 14, 2020
    Applicant: LG CHEM, LTD.
    Inventors: Sin Woo KIM, Byeong In AHN, Hyun Seong KO, Seijung PARK
  • Patent number: 10597581
    Abstract: The invention described in the present specification relates to a color conversion film including a resin matrix; and an organic fluorescent substance dispersed in the resin matrix, wherein the organic fluorescent substance includes a green fluorescent substance having a maximum light emission wavelength in a 510 nm to 560 nm range when irradiating light including a 450 nm wavelength, and a red fluorescent substance having a maximum light emission wavelength in a 600 nm to 660 nm range when irradiating light including a 450 nm wavelength, the green fluorescent substance and the red fluorescent substance have a molar ratio of 5:1 to 50:1, and the color conversion film has a light emission peak with a full width at half maximum (FWHM) of 50 nm or less in a 510 nm to 560 nm range and a light emission peak with a FWHM of 90 nm or less in a 600 nm to 660 nm range when irradiating light, a method for preparing the same, and a backlight unit including the color conversion film.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: March 24, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Nari Kim, Sehwan Son, Dong Mok Shin, Ji Ho Kim, Joo Yeon Seo, Byeong In Ahn, Du Hyeon Shin
  • Patent number: 10591663
    Abstract: The present application relates to a light guide plate unit including a reflection plate, an adhesive layer which is provided on the reflection plate and includes a bead, and a light guide plate provided on the adhesive layer, a backlight unit including the light guide plate unit, and a liquid crystal display device including the backlight unit.
    Type: Grant
    Filed: April 13, 2017
    Date of Patent: March 17, 2020
    Assignee: LG CHEM, LTD.
    Inventors: Han Sol Yoo, Dong Ho Ko, Byeong In Ahn, Jae Ho Jung, Hyun Seong Ko, Sin Woo Kim
  • Publication number: 20190375144
    Abstract: The present invention relates to an extrusion die and a method for extruding a sheet using the same, and according to one aspect of the present invention, there is provided an extrusion die comprising a storage part configured to hold a raw material, the storage part defining a first width, a pressure part configured to move the raw material through the storage part, a first die defining a second width less than the first width, such that a flow width of the raw material becomes narrower, a second die in fluid communication with the first die, the second die defining a width that increases from the second width to a third width, such that the flow width of the raw material passing through the first die becomes wider and a flow thickness becomes smaller, and a heating part configured to heat the raw material passing through the second die.
    Type: Application
    Filed: January 26, 2018
    Publication date: December 12, 2019
    Applicant: LG Chem, Ltd.
    Inventors: Chae Gyu Lee, Myung Han Lee, Byeong In Ahn, Kyung Hwan Yoon, Chang Kwon Chung
  • Patent number: 10401550
    Abstract: The invention described in the present specification relates to a backlight unit including a light source including a light emission lamp emitting light including a 450 nm wavelength, and an inorganic fluorescent substance provided at least a part of inside or on a surface of the lamp and having a maximum light emission wavelength in a 510 nm to 560 nm range when irradiating light including a 450 nm wavelength; and a color conversion film including an organic fluorescent substance, and having a maximum light emission wavelength in a 610 nm to 660 nm range when irradiating light emitted from the light emission lamp or the inorganic fluorescent substance, and a display apparatus including the same.
    Type: Grant
    Filed: February 1, 2016
    Date of Patent: September 3, 2019
    Assignee: LG CHEM, LTD.
    Inventors: Nari Kim, Byeong In Ahn, Dong Mok Shin, Ji Ho Kim, Joo Yeon Seo
  • Patent number: 10280343
    Abstract: The present invention relates to an adhesive resin composition including a styrene-ethylene-butylene-styrene copolymer with a specific chemical structure, an epoxy resin, an acid anhydride compound, and a curing catalyst, an adhesive film obtained from the resin composition, and a flexible metal laminate including the adhesive film.
    Type: Grant
    Filed: December 8, 2015
    Date of Patent: May 7, 2019
    Assignee: SHENGYI TECHNOLOGY CO., LTD.
    Inventors: Young Ji Tae, Young Seok Park, Byeong In Ahn
  • Publication number: 20190094455
    Abstract: The present application relates to a light guide plate unit including a reflection plate, an adhesive layer which is provided on the reflection plate and includes a bead, and a light guide plate provided on the adhesive layer, a backlight unit including the light guide plate unit, and a liquid crystal display device including the backlight unit.
    Type: Application
    Filed: April 13, 2017
    Publication date: March 28, 2019
    Applicant: LG CHEM, LTD.
    Inventors: Han Sol YOO, Dong Ho KO, Byeong In AHN, Jae Ho JUNG, Hyun Seong KO, Sin Woo KIM
  • Publication number: 20190093008
    Abstract: The invention described in the present specification relates to a color conversion film including: a color conversion layer which includes a resin matrix, and an organic fluorescent substance that is dispersed in the resin matrix, and emits light with a wavelength different from that of irradiated light when irradiated with light comprising a wavelength of 450 nm, in which the color conversion film includes a color shift compensation polymer, which allows a color difference change of white light emitted to be within 0.05 when an entire surface of the color conversion film is irradiated with blue light having a luminance of 600 nit at 60° C. for 1,000 hours, in the color conversion layer or in an additional layer disposed on the color conversion layer, a backlight unit including the same, and a display device including the same.
    Type: Application
    Filed: April 13, 2017
    Publication date: March 28, 2019
    Inventors: Dong Mok SHIN, Nari KIM, Byeong In AHN, Hyun Seong KO, Seijung PARK, Hye Mi OH