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).

  • Publication number: 20160209572
    Abstract: The present invention provides a quantum dot panel, including: a first substrate; a plurality of first cavities formed on the first substrate, so that adjacent ones of the cavities are separated from each other; a first roof layer covering the cavities so as to at least partially define the cavities; quantum dots contained in the first cavities; and a distribution layer in which the quantum dots are distributed and which is disposed within the first cavities. The quantum dot panel according to exemplary embodiments of the present invention includes quantum dots contained within predetermined structures formed on the substrate, thereby improving reliability of the quantum dot panel and simplifying the manufacturing process thereof.
    Type: Application
    Filed: November 3, 2015
    Publication date: July 21, 2016
    Inventors: Don Chan CHO, Nam Seok ROH, Yu Jin KIM, Sang Ji PARK
  • Publication number: 20160202567
    Abstract: A display device may include a first pixel, a second pixel, a first liquid crystal layer, and a second liquid crystal layer. The first pixel may include a first first-pixel subpixel electrode and a second first-pixel subpixel electrode. The second pixel may neighbor the first pixel and may include a first second-pixel subpixel electrode and a second second-pixel subpixel electrode. The first liquid crystal layer may be formed of a first liquid crystal material and may overlap the second first-pixel subpixel electrode. The second liquid crystal layer may be formed of a second liquid crystal material and may overlap the first second-pixel subpixel electrode. A material property of the first liquid crystal material may be different from a material property of the second liquid crystal material.
    Type: Application
    Filed: October 13, 2015
    Publication date: July 14, 2016
    Inventors: Jang Mi KANG, Kwang-Chul JUNG, Nam Seok ROH, Cheol-Gon LEE
  • Patent number: 9389478
    Abstract: A display device according to an exemplary embodiment includes: a substrate, a thin film transistor on the substrate, a pixel electrode connected to the thin film transistor, a common electrode on the pixel electrode to be spaced apart from the pixel electrode while a plurality of microcavities are interposed between the common electrode and the pixel electrode, a roof layer on the common electrode, an alignment layer on the pixel electrode and beneath the common electrode and including a photosensitive material, a liquid crystal layer filling the microcavities, and an encapsulation layer on the roof layer to seal the microcavities.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: July 12, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seon Uk Lee, Nam Seok Roh, Hee-Keun Lee, Seok-Joon Hong
  • Publication number: 20160195775
    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: December 31, 2015
    Publication date: July 7, 2016
    Inventors: Baek Hee LEE, Nam Seok ROH, Seung-Won PARK, Hae Il PARK
  • Patent number: 9335601
    Abstract: A thin film transistor substrate for a liquid crystal display device includes a substrate, a metal layer on the substrate, and an aluminum complex oxide layer on the metal layer. The aluminum complex oxide layer comprises at least one selected from the group consisting of zirconium, tungsten, chromium and molybdenum. A passivation layer is formed on the aluminum complex oxide layer through a dipping process.
    Type: Grant
    Filed: July 17, 2013
    Date of Patent: May 10, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Hyun Seo, Mun-Pyo Hong, Nam-Seok Roh
  • Publication number: 20160070135
    Abstract: A liquid crystal display (LCD) device, including a lower polarizing plate configured to have a transmission axis in a first direction, a liquid crystal layer on the lower polarizing plate, an upper polarizing plate on the liquid crystal layer, the upper polarizing plate including a first polarizing plate and a second polarizing plate, the first polarizing plate having a transmission axis in the first direction, the second polarizing plate having a transmission axis in a second direction perpendicular to the first direction, and color filters including a white filter and a colored filter, the white filter overlapping with the first polarizing plate, and the color filter overlapping with the second polarizing plate.
    Type: Application
    Filed: March 3, 2015
    Publication date: March 10, 2016
    Inventors: Wan Soon Im, Nam Seok Roh, Young Goo Song, Hyoung Cheol Lee, Yong Woo Hyung, Hyung June Kim, Joong Gun Chong, Jong Hak Hwang
  • Patent number: 9274372
    Abstract: A quantum dot light-emitting device and a display apparatus including the same, the device including a light-emitting device that emits a first light; a quantum dot layer facing the light-emitting device, the quantum dot layer including a plurality of quantum dots, absorbing the first light, and emitting a second light and a third light that have different wavelength ranges compared to the first light; and a band pass filter on the quantum dot layer, the band pass filter cutting off a portion of the second light and a portion of the third light.
    Type: Grant
    Filed: August 12, 2014
    Date of Patent: March 1, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Byung Park, Jong-Hyuk Kang, Hak-Sun Kim, Nam-Seok Roh, Dong-Hoon Lee
  • Publication number: 20150346554
    Abstract: A liquid crystal display (LCD) comprises a light source configured to provide a first light having a first wavelength, a first wavelength conversion layer configured to convert the first light into a second light having a second wavelength longer than the first wavelength, and a first optical shutter which overlaps the first wavelength conversion layer, is configured to adjust transmittance of the first light or the second light, and comprises liquid crystal molecules and dichromatic dye.
    Type: Application
    Filed: October 7, 2014
    Publication date: December 3, 2015
    Inventors: Baek Hee LEE, Nam Seok ROH, Hae Il PARK, Mun Ki SIM
  • Publication number: 20150301375
    Abstract: A display device according to an exemplary embodiment includes: a substrate, a thin film transistor on the substrate, a pixel electrode connected to the thin film transistor, a common electrode on the pixel electrode to be spaced apart from the pixel electrode while a plurality of microcavities are interposed between the common electrode and the pixel electrode, a roof layer on the common electrode, an alignment layer on the pixel electrode and beneath the common electrode and including a photosensitive material, a liquid crystal layer filling the microcavities, and an encapsulation layer on the roof layer to seal the microcavities.
    Type: Application
    Filed: September 18, 2014
    Publication date: October 22, 2015
    Inventors: Seon Uk LEE, Nam Seok ROH, Hee-Keun LEE, Seok-Joon HONG
  • Publication number: 20150268497
    Abstract: A display device includes a substrate including a pixel area, a thin-film transistor formed on the substrate, a pixel electrode connected to the thin-film transistor, a common electrode formed on the pixel electrode, a space formed between the pixel electrode and the common electrode, and a roof layer formed on the common electrode. The common electrode and the roof layer include a protrusion protruding from at least one of an upper edge and a lower edge of the pixel area.
    Type: Application
    Filed: June 8, 2015
    Publication date: September 24, 2015
    Inventors: HEE KEUN LEE, Yeun Tae Kim, Nam Seok Roh, Hae Ju Yun
  • Publication number: 20150219963
    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: Application
    Filed: January 12, 2015
    Publication date: August 6, 2015
    Inventors: Seon Uk LEE, Nam Seok ROH, Woo Jae LEE, Hee-Keun LEE, Don Chan CHO
  • Patent number: 9075257
    Abstract: A display device includes a substrate including a pixel area, a thin-film transistor formed on the substrate, a pixel electrode connected to the thin-film transistor, a common electrode formed on the pixel electrode, a space formed between the pixel electrode and the common electrode, and a roof layer formed on the common electrode. The common electrode and the roof layer include a protrusion protruding from at least one of an upper edge and a lower edge of the pixel area.
    Type: Grant
    Filed: November 6, 2012
    Date of Patent: July 7, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee Keun Lee, Yeun Tae Kim, Nam Seok Roh, Hae Ju Yun
  • Publication number: 20150187987
    Abstract: A method of manufacturing a quantum dot optical component is provided. By the method, a plurality of quantum dot lines are formed on a first substrate, an encapsulation member that encapsulates the quantum dot lines is formed on the first substrate, a second substrate is laminated on the encapsulation member, and the first and second substrates are cut into a plurality of quantum dot optical components each including at least one of the quantum dot lines.
    Type: Application
    Filed: October 15, 2014
    Publication date: July 2, 2015
    Inventors: Mun-Ki SIM, Baek-Hee Lee, Young-Min Kim, Hak-Sun Kim, Nam-Seok ROH, Jae-Byung Park, Hae-II Park
  • Patent number: 8994902
    Abstract: A display device includes; a first substrate, a second substrate disposed substantially opposite to the first substrate, a third substrate disposed between the first substrate and the second substrate, a color display layer disposed between the first substrate and the third substrate, the color display layer comprising a cholesteric liquid crystal, a first electrode and a second electrode electrically connected to the color display layer, a color conversion layer disposed between the third substrate and the second substrate, and a third electrode and a fourth electrode electrically connected to the color conversion layer.
    Type: Grant
    Filed: March 19, 2009
    Date of Patent: March 31, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Il Kim, Nam-Seok Roh
  • Publication number: 20150085223
    Abstract: A quantum dot light-emitting device and a display apparatus including the same, the device including a light-emitting device that emits a first light; a quantum dot layer facing the light-emitting device, the quantum dot layer including a plurality of quantum dots, absorbing the first light, and emitting a second light and a third light that have different wavelength ranges compared to the first light; and a band pass filter on the quantum dot layer, the band pass filter cutting off a portion of the second light and a portion of the third light.
    Type: Application
    Filed: August 12, 2014
    Publication date: March 26, 2015
    Inventors: Jae-Byung PARK, Jong-Hyuk KANG, Hak-Sun KIM, Nam-Seok ROH, Dong-Hoon LEE
  • Publication number: 20150042700
    Abstract: A display apparatus includes a light source configured to generate lights having a plurality of colors, the light source configured to be driven in a field sequential color driving method; and a display panel configured to receive the lights to display an image, display the colors at a first area in a first order, and display the colors at a second area different from the first area in a second order different from the first order.
    Type: Application
    Filed: April 7, 2014
    Publication date: February 12, 2015
    Applicant: SMASUNG DISPLAY CO., LTD.
    Inventors: Jae-Byung Park, Kwang-Keun Lee, Nam-Seok Roh, Seon-Tae Yoon
  • Patent number: 8953126
    Abstract: A liquid crystal display according to exemplary embodiments of the present invention includes a first panel including a first lower substrate, a first lower electrode formed on the first lower substrate, a first upper substrate facing the first lower substrate, a first upper electrode formed on the first upper substrate, and a first cholesteric liquid crystal injected between the first lower electrode and the first upper electrode, wherein the first lower electrode includes carbon nanotubes. The liquid crystal display including the first lower electrode made of the carbon nanotubes without a light absorption layer provides a simple structure capable of realizing a black state.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: February 10, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Seong Kim, Nam-Seok Roh, Sang-Il Kim, Woo-Jae Lee
  • Patent number: 8896519
    Abstract: An electrophoretic display according to an exemplary embodiment of the present invention may include: a first substrate, a first electrode formed on the first substrate, a second electrode spaced apart from the first electrode, a second substrate facing the first substrate, and a plurality of charged particles arranged between the first substrate and the second substrate, pairs of the charged particles having different polarities. Each charged particle has at least two threshold voltages, where the threshold voltages are voltage magnitudes below which a voltage applied across the first and second electrodes does not move the associated charged particle. The pixels may represent any one of colors such as red, green, blue, white, and black by including two charged particles of different colors in one pixel and changing the attractive and repulsive force threshold voltages of each of two charged particles of different colors contained in the pixel.
    Type: Grant
    Filed: August 26, 2010
    Date of Patent: November 25, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok-Joon Hong, Nam-Seok Roh, Tae-Hyung Hwang, Hyung-Il Jeon, Yu-Jin Kim
  • Publication number: 20140307215
    Abstract: Provided are a display device and a manufacturing method thereof capable of preventing deformation of a microcavity and stably injecting an aligning agent and a liquid crystal. The display device includes a substrate including a plurality of pixel areas which includes a plurality of pixel columns and is disposed in a matrix form; a thin film transistor formed on the substrate; a pixel electrode connected to the thin film transistor and formed in the pixel area; a roof layer formed on the pixel electrode so as to be spaced apart from the pixel electrode with a microcavity therebetween; a first injection hole formed in the roof layer exposing the microcavity at a side edge of the pixel column; a liquid crystal layer filling the microcavity; and an encapsulation layer formed on the roof layer so as to cover the first injection hole to seal the microcavity.
    Type: Application
    Filed: October 24, 2013
    Publication date: October 16, 2014
    Inventors: Seon Uk LEE, Nam Seok ROH, Sung Hwan WON, Woo Jae LEE, Kyung Tae CHAE
  • Publication number: 20140267966
    Abstract: A liquid crystal display includes a substrate; a thin film transistor on the substrate; a pixel electrode connected to the thin film transistor; a first insulating layer facing the pixel electrode; a plurality of microcavities each defined between the pixel electrode and the first insulating layer and including a liquid crystal injection hole exposing an inside of the microcavity; a liquid crystal layer including liquid crystal molecules, in the microcavities; a light blocking layer between adjacent microcavities; and a passivation layer member enclosing the light blocking layer.
    Type: Application
    Filed: September 13, 2013
    Publication date: September 18, 2014
    Applicant: Samsung Display Co., Ltd.
    Inventors: Sung Hwan Won, Yong Seok Kim, Lim Tae Woo, Pil Sook Kwon, Won Tae Kim, Han Joon Yoo, Dae Ho Lee, Nam Seok Roh, Woo Jae Lee