Patents by Inventor Nam-Seok Roh

Nam-Seok Roh 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: 11042063
    Abstract: A display device includes a backlight unit configured to emit light, a display panel disposed in front of the backlight unit, and an optical sheet disposed between the backlight unit and the display panel. The optical sheet may include a first prism sheet including a plurality of first prisms arranged in a first direction, a second prism sheet including a plurality of second prisms arranged in a second direction intersecting the first direction, and disposed in front of the first prism sheet; and a third prism sheet including a plurality of third prisms arranged in the first direction, and disposed in front of the second prism sheet.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: June 22, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sei Young Kang, Seung Jun Jeong, Min Woo Kang, Nam Seok Roh, Kwan Sik Min, Young Chol Lee, Jae Jeong Lee
  • Patent number: 10890800
    Abstract: A display apparatus includes a light emitting module to emit light; a first prism sheet provided on the light emitting module; a reflective polarizing sheet provided on the first prism sheet to transmit first polarized light of the light exiting the first prism sheet and reflect second polarized light of the light exiting the first prism sheet; a second prism sheet provided on the reflective polarizing sheet; and a liquid crystal panel provided on the second prism sheet, the liquid crystal panel including a liquid crystal cell, a first polarizing sheet provided on a first side the liquid crystal cell, and a second polarizing sheet provided between the second prism sheet and a second side of the liquid crystal cell, wherein the second prism sheet is configured to control a transmission angle at which the light exiting the reflective polarizing sheet is transmitted by the liquid crystal cell.
    Type: Grant
    Filed: October 3, 2019
    Date of Patent: January 12, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Chol Lee, Wook Jae Jeon, Nam Seok Roh, Kwan Sik Min
  • Patent number: 10877305
    Abstract: Provided is a display apparatus including a light source configured to emit light; a light guide plate configured to diffuse and emit light emitted from the light source; and a local dimming portion configured to pass or scatter light emitted from the light guide plate. The local dimming portion may include an electro-optical material and a plurality of grains having refractive index that changes based on an electric field.
    Type: Grant
    Filed: August 7, 2019
    Date of Patent: December 29, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun Cho, Nam Seok Roh, Won Geun Ryu, Sang Hyun Sohn, Hyo Gun Lee
  • Publication number: 20200201119
    Abstract: A display device includes a backlight unit configured to emit light, a display panel disposed in front of the backlight unit, and an optical sheet disposed between the backlight unit and the display panel. The optical sheet may include a first prism sheet including a plurality of first prisms arranged in a first direction, a second prism sheet including a plurality of second prisms arranged in a second direction intersecting the first direction, and disposed in front of the first prism sheet; and a third prism sheet including a plurality of third prisms arranged in the first direction, and disposed in front of the second prism sheet.
    Type: Application
    Filed: December 19, 2019
    Publication date: June 25, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Sei Young KANG, Seung Jun JEONG, Min Woo KANG, Nam Seok ROH, Kwan Sik MIN, Young Chol LEE, Jae Jeong LEE
  • Publication number: 20200117048
    Abstract: Disclosed herein is a display apparatus. The display apparatus includes a backlight unit configured to emit light, a display panel positioned in front of the backlight unit; and an optical film positioned in front of the display panel, and the optical film includes a base layer, a first refractive layer positioned in front of the base layer, a second refractive layer positioned in front of the first refractive layer and having a lower refractive index than the first refractive layer, a third refractive layer positioned at the rear of the base layer, and a fourth refractive layer positioned at the rear of the third refractive layer and having a lower refractive index than the third refractive layer.
    Type: Application
    Filed: October 2, 2019
    Publication date: April 16, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Seung Jun JEONG, Sei Young Kang, Min Woo Kang, Nam Seok Roh, Kwan Sik Min, Jun Sung Choi
  • Publication number: 20200110304
    Abstract: A display apparatus includes a light emitting module to emit light; a first prism sheet provided on the light emitting module; a reflective polarizing sheet provided on the first prism sheet to transmit first polarized light of the light exiting the first prism sheet and reflect second polarized light of the light exiting the first prism sheet; a second prism sheet provided on the reflective polarizing sheet; and a liquid crystal panel provided on the second prism sheet, the liquid crystal panel including a liquid crystal cell, a first polarizing sheet provided on a first side the liquid crystal cell, and a second polarizing sheet provided between the second prism sheet and a second side of the liquid crystal cell, wherein the second prism sheet is configured to control a transmission angle at which the light exiting the reflective polarizing sheet is transmitted by the liquid crystal cell.
    Type: Application
    Filed: October 3, 2019
    Publication date: April 9, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Chol LEE, Wook Jae JEON, Nam Seok ROH, Kwan Sik MIN
  • Publication number: 20200064664
    Abstract: Provided is a display apparatus including a light source configured to emit light; a light guide plate configured to diffuse and emit light emitted from the light source; and a local dimming portion configured to pass or scatter light emitted from the light guide plate. The local dimming portion may include an electro-optical material and a plurality of grains having refractive index that changes based on an electric field.
    Type: Application
    Filed: August 7, 2019
    Publication date: February 27, 2020
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin Hyun CHO, Nam Seok ROH, Won Geun RYU, Sang Hyun SOHN, Hyo Gun LEE
  • Publication number: 20200004083
    Abstract: A method of manufacturing a polarizing plate includes: preparing a polarizer including a dichroic material, the polarizer being configured to polarize incident light; forming a protective film on at least one surface of the polarizer; and forming at least one transmission region by selectively radiating a femtosecond laser onto the polarizer, a group transmittance of the at least one transmission region being 80% or more.
    Type: Application
    Filed: September 10, 2019
    Publication date: January 2, 2020
    Inventors: Ho Yun BYUN, Hak Sun KIM, Nam Seok ROH, Seung Beom PARK
  • Patent number: 10503037
    Abstract: The present disclosure relates to a display device, and the display device according to an exemplary embodiment includes: a substrate having a rounded edge; a light blocking member disposed around a display area of the substrate, wherein a corner of the light blocking member has a rounded edge; a plurality of pixels disposed on the substrate; and a pixel electrode disposed in each of the plurality of pixels, wherein the pixel electrode has a horizontal stem, a vertical stem, and a plurality of fine branches, wherein the plurality of pixels includes a first pixel at least partially overlapping the light blocking member and a second pixel adjacent to the first pixel and not overlapping the light blocking member, and wherein a shape of a fine branch disposed in the first pixel is different from a shape of a fine branch disposed in the second pixel.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: December 10, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Il Tae, Nam Seok Roh, Joo Lark Son, Young Goo Song, Seung Jun Yu
  • Patent number: 10437096
    Abstract: A method of manufacturing a polarizing plate includes: preparing a polarizer including a dichroic material, the polarizer being configured to polarize incident light; forming a protective film on at least one surface of the polarizer; and forming at least one transmission region by selectively radiating a femtosecond laser onto the polarizer, a group transmittance of the at least one transmission region being 80% or more.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: October 8, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ho Yun Byun, Hak Sun Kim, Nam Seok Roh, Seung Beom Park
  • Publication number: 20190265563
    Abstract: The present disclosure relates to a display device, and the display device according to an exemplary embodiment includes: a substrate having a rounded edge; a light blocking member disposed around a display area of the substrate, wherein a corner of the light blocking member has a rounded edge; a plurality of pixels disposed on the substrate; and a pixel electrode disposed in each of the plurality of pixels, wherein the pixel electrode has a horizontal stem, a vertical stem, and a plurality of fine branches, wherein the plurality of pixels includes a first pixel at least partially overlapping the light blocking member and a second pixel adjacent to the first pixel and not overlapping the light blocking member, and wherein a shape of a fine branch disposed in the first pixel is different from a shape of a fine branch disposed in the second pixel.
    Type: Application
    Filed: May 8, 2019
    Publication date: August 29, 2019
    Inventors: Chang Il TAE, Nam Seok ROH, Joo Lark SON, Young Goo SONG, Seung Jun YU
  • Patent number: 10338437
    Abstract: A display device includes: a substrate including a plurality of pixel areas; a thin film transistor on the substrate; a pixel electrode connected to the thin film transistor; an roof layer connected between pixel areas adjacent in a first direction and separated from the pixel electrode; a column protruded from the roof layer in a boundary portion of the pixel areas; a space between the pixel electrode and the roof layer, the roof layer partially overlapping an upper inner wall and a first side inner wall of the space and exposing a second side inner wall of the space; a liquid crystal in the space.
    Type: Grant
    Filed: November 17, 2012
    Date of Patent: July 2, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seon Uk Lee, Yeun Tae Kim, Seong Gyu Kwon, Nam Seok Roh
  • Patent number: 10303025
    Abstract: The present disclosure relates to a display device, and the display device according to an exemplary embodiment includes: a substrate having a rounded edge; a light blocking member disposed around a display area of the substrate, wherein a corner of the light blocking member has a rounded edge; a plurality of pixels disposed on the substrate; and a pixel electrode disposed in each of the plurality of pixels, wherein the pixel electrode has a horizontal stem, a vertical stem, and a plurality of fine branches, wherein the plurality of pixels includes a first pixel at least partially overlapping the light blocking member and a second pixel adjacent to the first pixel and not overlapping the light blocking member, and wherein a shape of a fine branch disposed in the first pixel is different from a shape of a fine branch disposed in the second pixel.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: May 28, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Il Tae, Nam Seok Roh, Joo Lark Son, Young Goo Song, Seung Jun Yu
  • Patent number: 10197853
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes: a display panel, and a color conversion layer coupled to the display panel and having a color conversion layer, where the color conversion layer includes a block copolymer including a first copolymer and a second copolymer, and quantum rods dispersed within the block copolymer. The block copolymer includes a first block structure unit formed by the first copolymer; and a second block structure unit formed by the second copolymer, where the quantum rods is are disposed within either one of the first block structure unit and the second block structure unit.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: February 5, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Baek Hee Lee, Nam Seok Roh, Seung-Won Park, Hae Il Park
  • Patent number: 10036918
    Abstract: The inventive concept relates to a light unit and a diffuser separated from the light source at a predetermined distance and having a cylindrical structure, and a cylindrical structure display device including the same.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: July 31, 2018
    Assignee: Samsung Display Co., ltd.
    Inventors: Seon Uk Lee, Nam Seok Roh, Woo Jae Lee, Hee-Keun Lee, Don Chan Cho
  • Publication number: 20180186109
    Abstract: A method of manufacturing a polarizing plate includes: preparing a polarizer including a dichroic material, the polarizer being configured to polarize incident light; forming a protective film on at least one surface of the polarizer; and forming at least one transmission region by selectively radiating a femtosecond laser onto the polarizer, a group transmittance of the at least one transmission region being 80% or more.
    Type: Application
    Filed: December 4, 2017
    Publication date: July 5, 2018
    Inventors: Ho Yun BYUN, Hak Sun KIM, Nam Seok ROH, Seung Beom PARK
  • Publication number: 20180149925
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes: a display panel, and a color conversion layer coupled to the display panel and having a color conversion layer, where the color conversion layer includes a block copolymer including a first copolymer and a second copolymer, and quantum rods dispersed within the block copolymer. The block copolymer includes a first block structure unit formed by the first copolymer; and a second block structure unit formed by the second copolymer, where the quantum rods is are disposed within either one of the first block structure unit and the second block structure unit.
    Type: Application
    Filed: January 31, 2018
    Publication date: May 31, 2018
    Inventors: Baek Hee LEE, Nam Seok ROH, Seung-Won PARK, Hae Il PARK
  • Patent number: 9964806
    Abstract: A display device includes a plurality of pixels; a first substrate including a pixel electrode disposed in a pixel of the plurality of pixels, a second substrate facing the first substrate and including a color adjusting pattern, which is disposed in the pixel of the plurality of pixels, and a common electrode, which is disposed on the color adjusting patterns, and a liquid crystal layer interposed between the first substrate and the second substrate and including a liquid crystal and a dichroic dye, wherein the plurality of pixels include a first-color pixel, which is configured to display a first color, and a second-color pixel, which is configured to display a second color different from the first color, and the color adjusting pattern includes a first color adjusting pattern, which is disposed in the first-color pixel, and a second color adjusting pattern, which is disposed in the second-color pixel.
    Type: Grant
    Filed: August 5, 2016
    Date of Patent: May 8, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yun Jang, Nam Seok Roh, Seung Beom Park
  • Publication number: 20180107079
    Abstract: The present disclosure relates to a display device, and the display device according to an exemplary embodiment includes: a substrate having a rounded edge; a light blocking member disposed around a display area of the substrate, wherein a corner of the light blocking member has a rounded edge; a plurality of pixels disposed on the substrate; and a pixel electrode disposed in each of the plurality of pixels, wherein the pixel electrode has a horizontal stem, a vertical stem, and a plurality of fine branches, wherein the plurality of pixels includes a first pixel at least partially overlapping the light blocking member and a second pixel adjacent to the first pixel and not overlapping the light blocking member, and wherein a shape of a fine branch disposed in the first pixel is different from a shape of a fine branch disposed in the second pixel.
    Type: Application
    Filed: August 31, 2017
    Publication date: April 19, 2018
    Inventors: Chang Il TAE, Nam Seok ROH, Joo Lark SON, Young Goo SONG, Seung Jun YU
  • Patent number: 9897854
    Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes: a display panel, and a color conversion layer coupled to the display panel and having a color conversion layer, where the color conversion layer includes a block copolymer including a first copolymer and a second copolymer, and quantum rods dispersed within the block copolymer. The block copolymer includes a first block structure unit formed by the first copolymer; and a second block structure unit formed by the second copolymer, where the quantum rods is are disposed within either one of the first block structure unit and the second block structure unit.
    Type: Grant
    Filed: December 31, 2015
    Date of Patent: February 20, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Baek Hee Lee, Nam Seok Roh, Seung-Won Park, Hae Il Park