Patents by Inventor Su Jin Chang

Su Jin Chang 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: 20230200183
    Abstract: An organic light emitting display device includes a substrate including first to third sub-pixels; first to third light emitting diodes disposed on the substrate and respectively located in the first to third sub-pixels; and a transmittance control layer, light emitted from the first to third light emitting diodes being transmitted toward the transmittance control layer, the transmittance control layer including a lens-shaped transparent pattern and a gray pattern, wherein the gray pattern is located to cover the lens-shaped transparent pattern, and has different thicknesses according to a thick of the transparent pattern.
    Type: Application
    Filed: December 16, 2022
    Publication date: June 22, 2023
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Su-Jin CHANG, Kyu-Hwan LEE, Ji-Su YOON
  • Publication number: 20220020964
    Abstract: The present disclosure relates to an organic light-emitting diode display device that comprises a first substrate on which first, second and third subpixels each including an emission area and a non-emission area are defined; first, second and third light-emitting diodes disposed in the first, second and third subpixels on the first substrate, respectively; a second substrate over the first, second and third light-emitting diodes; and a scattering pattern corresponding to the first subpixel and disposed over the first light-emitting diode or under the first substrate, wherein the first subpixel has an area reflectance higher than the second and third subpixels.
    Type: Application
    Filed: July 13, 2021
    Publication date: January 20, 2022
    Inventors: Su-Jin CHANG, Sung-Rae LEE, Ju-Hun MIN
  • Patent number: 10996506
    Abstract: A polyhedron type display device includes: a plurality of liquid crystal panels connected to each other to constitute a polyhedral shape; a light source housing at a center of mass of the polyhedral shape; a light source unit accommodated in the light source housing, the light source unit emitting a light to supply the light to the plurality of liquid crystal panels; a light source supporting pillar connecting and supporting the light source housing and the plurality of liquid crystal panels; a structure supporting pedestal supporting the light source supporting pillar; a supporting panel supporting the plurality of liquid crystal panels; a radiating pillar connected to the light source unit and emitting a heat of the light source unit; and a protecting cover covering and protecting the radiating pillar.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: May 4, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Sun-Woong Kim, Dong-Seok Lee, Su-Jin Chang, Yeong-Eun Son
  • Patent number: 10727279
    Abstract: An organic light emitting diode (OLED) display device includes an OLED with a plurality of sub-pixels. A first portion of light-absorption filter layer is between the OLED and an emission surface at locations corresponding to selected sub-pixel locations. The first portion of light-absorption filter layer includes a first light-absorption dye and a second light-absorption dye such that the first portion has a light transmittance curve that has a first valley between 470 nm and 550 nm and has a second valley between 570 nm and 620 nm. At the selected sub-pixel locations, there is a color filter between the OLED and the light-absorption filter.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: July 28, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Su-Jin Chang, Ji-Su Yoon, Je-Beom Park, Dong-Ryul Jung, Kyu-Oh Kwon, Min-Jae Kang
  • Patent number: 10698259
    Abstract: A deformed liquid crystal display device including a cover bottom; a backlight unit on the cover bottom; the backlight unit including: a LED assembly including a plurality of LEDs; a reflector comprising a bottom surface, and side portions bent upward from edges of the bottom surface; a diffuser, disposed above and spaced apart from the plurality of LEDs and the bottom surface of the reflector; a liquid crystal panel disposed on the backlight unit, wherein the reflector has at least one corner having an acute angle formed by two adjacent side portions, wherein a brightness enhancing portion is disposed at the corner having the acute angle.
    Type: Grant
    Filed: November 9, 2018
    Date of Patent: June 30, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yeong-Eun Son, Su-Jin Chang, Dong-Seok Lee
  • Publication number: 20190181189
    Abstract: An organic light emitting diode (OLED) display device includes an OLED with a plurality of sub-pixels. A first portion of light-absorption filter layer is between the OLED and an emission surface at locations corresponding to selected sub-pixel locations. The first portion of light-absorption filter layer includes a first light-absorption dye and a second light-absorption dye such that the first portion has a light transmittance curve that has a first valley between 470 nm and 550 nm and has a second valley between 570 nm and 620 nm. At the selected sub-pixel locations, there is a color filter between the OLED and the light-absorption filter.
    Type: Application
    Filed: December 11, 2018
    Publication date: June 13, 2019
    Inventors: Su-Jin CHANG, Ji-Su YOON, Je-Beom PARK, Dong-Ryul JUNG, Kyu-Oh KWON, Min-Jae KANG
  • Publication number: 20190171062
    Abstract: A polyhedron type display device includes: a plurality of liquid crystal panels connected to each other to constitute a polyhedral shape; a light source housing at a center of mass of the polyhedral shape; a light source unit accommodated in the light source housing, the light source unit emitting a light to supply the light to the plurality of liquid crystal panels; a light source supporting pillar connecting and supporting the light source housing and the plurality of liquid crystal panels; a structure supporting pedestal supporting the light source supporting pillar; a supporting panel supporting the plurality of liquid crystal panels; a radiating pillar connected to the light source unit and emitting a heat of the light source unit; and a protecting cover covering and protecting the radiating pillar.
    Type: Application
    Filed: November 28, 2018
    Publication date: June 6, 2019
    Inventors: Sun-Woong KIM, Dong-Seok LEE, Su-Jin CHANG, Yeong-Eun SON
  • Publication number: 20190146278
    Abstract: A deformed liquid crystal display device including a cover bottom; a backlight unit on the cover bottom; the backlight unit including: a LED assembly including a plurality of LEDs; a reflector comprising a bottom surface, and side portions bent upward from edges of the bottom surface; a diffuser, disposed above and spaced apart from the plurality of LEDs and the bottom surface of the reflector; a liquid crystal panel disposed on the backlight unit, wherein the reflector has at least one corner having an acute angle formed by two adjacent side portions, wherein a brightness enhancing portion is disposed at the corner having the acute angle.
    Type: Application
    Filed: November 9, 2018
    Publication date: May 16, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Yeong-Eun SON, Su-Jin CHANG, Dong-Seok LEE
  • Patent number: 10018861
    Abstract: A display device is disclosed which includes: a liquid crystal panel; an optical member configured to apply light to the liquid crystal panel; and a wrapping film configured to wrap an upper surface, at least one side surface and at least a part of a lower surface of the optical member.
    Type: Grant
    Filed: May 11, 2015
    Date of Patent: July 10, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jin Ryun Kim, Won Taek Moon, Sang Hyun Lee, Su Jin Chang, Seoung Mo Kang
  • Patent number: 9620688
    Abstract: A display device includes a micro-lens film which has a high fill-factor and a high luminance ratio and prevents generation of moiré. The display device includes a display panel configured to display an image, a plurality of Light Emitting Diodes (LEDs) configured to generate light to supply light to the display panel, a light guide panel configured to guide light to the display panel, and a micro-lens film including a base film that concentrates and diffuses light emitted from the light guide panel, a lens unit at an upper surface of the base film, and a back-coating film at a lower surface of the base film. The lens unit includes unit block groups randomly arranged at the upper surface of the base film, each unit block group containing randomly arranged fixed-shape lenses having different sizes, and micro-beads randomly formed on surfaces of the fixed-shape lenses.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: April 11, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Hyun Lee, Won-Taek Moon, Sun-Woong Kim, Bo-Ra Kim, Sang-Dae Han, Su-Jin Chang
  • Publication number: 20150378207
    Abstract: A display device is disclosed which includes: a liquid crystal panel; an optical member configured to apply light to the liquid crystal panel; and a wrapping film configured to wrap an upper surface, at least one side surface and at least a part of a lower surface of the optical member.
    Type: Application
    Filed: May 11, 2015
    Publication date: December 31, 2015
    Inventors: Jin Ryun KIM, Won Taek MOON, Sang Hyun LEE, Su Jin CHANG, Seoung Mo KANG
  • Patent number: 9188732
    Abstract: A display device and a method of fabricating a reflective sheet for the same are provided. The display device includes: a display panel to display an image, a plurality of light emitting diodes (LEDs) to: generate and supply light to the display panel, a light guide plate to guide the light to the display panel, and a reflective sheet to reflect light toward a cover bottom below the LEDs toward the light guide plate, the reflective sheet including: a reflective layer, first and second skin layers respectively on upper and lower portions of the reflective layer, the first and second skin layers each including an embossing surface including a plurality of first reflective patterns to: prevent adhesion between the reflective layer and the light guide plate, and increase efficiency of light, and the reflective layer including a plurality of second reflective patterns, each including a filler in an air layer.
    Type: Grant
    Filed: December 4, 2013
    Date of Patent: November 17, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won-Taek Moon, Bo-Ra Kim, Su-Jin Chang
  • Publication number: 20140183571
    Abstract: A display device includes a micro-lens film which has a high fill-factor and a high luminance ratio and prevents generation of moiré. The display device includes a display panel configured to display an image, a plurality of Light Emitting Diodes (LEDs) configured to generate light to supply light to the display panel, a light guide panel configured to guide light to the display panel, and a micro-lens film including a base film that concentrates and diffuses light emitted from the light guide panel, a lens unit at an upper surface of the base film, and a back-coating film at a lower surface of the base film. The lens unit includes unit block groups randomly arranged at the upper surface of the base film, each unit block group containing randomly arranged fixed-shape lenses having different sizes, and micro-beads randomly formed on surfaces of the fixed-shape lenses.
    Type: Application
    Filed: December 20, 2013
    Publication date: July 3, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sang-Hyun Lee, Won-Taek Moon, Sun-Woong Kim, Bo-Ra Kim, Sang-Dae Han, Su-Jin Chang
  • Publication number: 20140169036
    Abstract: A display device and a method of fabricating a reflective sheet for the same are provided. The display device includes: a display panel to display an image, a plurality of light emitting diodes (LEDs) to: generate and supply light to the display panel, a light guide plate to guide the light to the display panel, and a reflective sheet to reflect light toward a cover bottom below the LEDs toward the light guide plate, the reflective sheet including: a reflective layer, first and second skin layers respectively on upper and lower portions of the reflective layer, the first and second skin layers each including an embossing surface including a plurality of first reflective patterns to: prevent adhesion between the reflective layer and the light guide plate, and increase efficiency of light, and the reflective layer including a plurality of second reflective patterns, each including a filler in an air layer.
    Type: Application
    Filed: December 4, 2013
    Publication date: June 19, 2014
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sang-Hyun Lee, Byoung-Ku Kim, Won-Taek Moon, Bo-Ra Kim, Su-Jin Chang
  • Patent number: 8746905
    Abstract: A method of fabricating a reflecting sheet includes: providing a base sheet including a reflecting layer, an upper surface layer over the reflecting layer and a lower surface layer under the reflecting layer, the reflecting layer including a fine foam; dividing the base sheet into upper and lower division sheets; and forming a reinforcing layer on each of the upper and lower division sheets to constitute the reflecting sheet.
    Type: Grant
    Filed: August 30, 2011
    Date of Patent: June 10, 2014
    Assignee: LG Display Co., Ltd.
    Inventors: Su-Jin Chang, Won-Taek Moon, Sung-Hun Kim, Sang-Hyun Lee, Sang-Dae Han
  • Publication number: 20120050902
    Abstract: A method of fabricating a reflecting sheet includes: providing a base sheet including a reflecting layer, an upper surface layer over the reflecting layer and a lower surface layer under the reflecting layer, the reflecting layer including a fine foam; dividing the base sheet into upper and lower division sheets; and forming a reinforcing layer on each of the upper and lower division sheets to constitute the reflecting sheet.
    Type: Application
    Filed: August 30, 2011
    Publication date: March 1, 2012
    Inventors: Su-Jin CHANG, Won-Taek Moon, Sung-Hun Kim, Sang-Hyun Lee, Sang-Dae Han
  • Patent number: 6746041
    Abstract: A portable airbag system including a portable airbag mechanism which may be carried and moved by a vehicle occupant. The airbag system includes an impact sensor operated independently from or in cooperation with at least one fixed airbag mechanism mounted in a motor vehicle. The portable airbag mechanism has arranged therein an airbag which is inflated and deployed upon occurrence of a vehicle collision. A controller applies an actuating signal to the portable airbag mechanism when the vehicle collision is sensed, thereby allowing the bag arranged in the portable airbag mechanism to be inflated and deployed.
    Type: Grant
    Filed: February 7, 2002
    Date of Patent: June 8, 2004
    Inventors: Jo Won Chang, Su Jin Chang
  • Publication number: 20030146610
    Abstract: Disclosed is a portable air bag system. The portable air bag system comprises impact sensing means operated independently from or in cooperation with at least one fixed air bag mechanism mounted to a motor vehicle, for sensing a vehicle collision; a portable air bag mechanism capable of being carried and moved by a vehicle occupant, the portable air bag mechanism having arranged therein an air bag which is inflated and deployed upon occurrence of the vehicle collision; and control means for applying an actuating signal to the portable air bag mechanism when the vehicle collision is sensed by the impact sensing means, and thereby allowing the air bag arranged in the portable air bag mechanism to be inflated and deployed.
    Type: Application
    Filed: February 7, 2002
    Publication date: August 7, 2003
    Inventors: Jo Won Chang, Su Jin Chang