Patents by Inventor Jong Seok Oh

Jong Seok Oh 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: 8525154
    Abstract: Provided is a light-emitting device which has a simple structure and can be manufactured in a simple process, has increased light coupling efficiency and brightness, and can reduce adverse effects of optical resonance on a view angle and emission spectrum. The light-emitting device includes a substrate; a light-emitting diode formed on the substrate; and an optical resonance layer formed outside the light-emitting diode that induces resonance of light emitted from the light-emitting diode.
    Type: Grant
    Filed: November 9, 2005
    Date of Patent: September 3, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yoon-Chang Kim, Young-Woo Song, Sang-Hwan Cho, Ji-Hoon Ahn, Joon-Gu Lee, So-Young Lee, Jong-Seok Oh, Jae-Heung Ha
  • Patent number: 8384854
    Abstract: A liquid crystal display apparatus includes a backlight unit, a second polarization layer, a liquid crystal layer disposed between the backlight unit and the second polarization layer, a first polarization layer disposed between the backlight unit and the liquid crystal layer. In an embodiment, a surface of the first polarization layer facing the backlight unit includes a reflective surface and a surface of the first polarization layer facing the backlight unit includes an absorbent surface. In another embodiment, the first polarization layer includes grids, which include a metal, and absorbing members, which include dielectric materials. In another embodiment, the first polarization layer includes grids, each of which includes a first component including a dielectric material and a second component including a metal.
    Type: Grant
    Filed: April 24, 2009
    Date of Patent: February 26, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young-Woo Song, Jong-Hyuk Lee, Kyu-Hwan Hwang, Jong-Seok Oh, Joon-Gu Lee, Jae-Heung Ha, Chul-Woo Park
  • Patent number: 8187482
    Abstract: A flat panel display and a method of manufacturing the same are disclosed. In one embodiment, the manufacturing method includes: i) preparing a substrate, ii) forming a plurality of subpixels on the substrate and iii) forming a light resonating layer including two or more layers on the subpixels, wherein the light resonating layer varies in thickness depending on the subpixels. According to at least one embodiment, it is possible to improve the brightness and the external light coupling efficiency. Further, it is possible to easily manufacture the light resonating layer with the structure in which the low refractive layers alternate with the high refractive layers.
    Type: Grant
    Filed: February 5, 2009
    Date of Patent: May 29, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Woo Song, Yoon-Chang Kim, Jong-Seok Oh, Sang-Hwan Cho, Ji-Hoon Ahn, Joon-Gu Lee, So-Young Lee, Jae-Heung Ha
  • Patent number: 8120241
    Abstract: A display device includes a substrate, a white light source on the substrate, a dichroic layer between a viewing surface of the display device and the white light source, the dichroic layer being configured to allow light of a predetermined wavelength band to be transmitted therethrough, and a ¼ wavelength layer between the dichroic layer and the white light source.
    Type: Grant
    Filed: March 5, 2008
    Date of Patent: February 21, 2012
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Joon-Gu Lee, Young-Woo Song, Kyu-Hwan Hwang, Jong-Seok Oh, Jae-Heung Ha, Chul-Woo Park, Jong-Hyuk Lee
  • Patent number: 7911136
    Abstract: A polarizer and an organic light emitting display apparatus including the polarizer. According to an embodiment of the present invention, a polarizer includes a substrate and a plurality of electrode units separated from each other on the substrate and formed in a stripe pattern. Each of the electrode units includes a first surface facing the substrate and a second surface opposite the first surface, the first surface having a width smaller than a width of the second surface.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: March 22, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Joon-Gu Lee, Young-Woo Song, Kyu-Hwan Hwang, Jong-Seok Oh, Jae-Heung Ha, Chul-Woo Park, Jong-Hyuk Lee
  • Patent number: 7898167
    Abstract: An electroluminescence (EL) display device with improved external light coupling efficiency and brightness that may be easily manufactured. The EL display device includes: a substrate; a first electrode arranged above the substrate; a second electrode arranged above and substantially parallel to the first electrode; an intermediate layer arranged between the first and second electrodes, and including an emissive layer; a color converting layer arranged between the substrate and the first electrode or above the second electrode; and a light resonance controlling layer arranged between the emissive layer and the color converting layer.
    Type: Grant
    Filed: December 12, 2005
    Date of Patent: March 1, 2011
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Woo Song, Yoon-Chang Kim, Sang-Hwan Cho, Ji-Hoon Ahn, Joon-Gu Lee, So-Young Lee, Jong-Seok Oh, Jae-Heung Ha
  • Patent number: 7772768
    Abstract: A polarizer and a flat panel display apparatus including the polarizer are provided. The polarizer includes: a base; and a plurality of grids on the base, the plurality of grids including a first component and a second component, and having a thickness in a thickness direction of the polarizer. The first component includes a dielectric material and the second component includes a metal. The first component and the second component have a concentration gradient in the thickness direction, wherein a concentration of the first component in the grids increases along a thickness direction toward the external light incidence side, and a concentration of the second component in the grids increases along a thickness direction away from the external light incidence side.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: August 10, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jong-Seok Oh, Jong-Hyuk Lee, Young-Woo Song, Kyu-Hwan Hwang, Joon-Gu Lee, Jae-Heung Ha, Chul-Woo Park
  • Publication number: 20100148664
    Abstract: A polarizer and an organic light emitting display apparatus including the polarizer. According to an embodiment of the present invention, a polarizer includes a substrate and a plurality of electrode units separated from each other on the substrate and formed in a stripe pattern. Each of the electrode units includes a first surface facing the substrate and a second surface opposite the first surface, the first surface having a width smaller than a width of the second surface.
    Type: Application
    Filed: February 24, 2010
    Publication date: June 17, 2010
    Inventors: Joon-Gu Lee, Young-Woo Song, Kyu-Hwan Hwang, Jong-Seok Oh, Jae-Heung Ha, Chul-Woo Park, Jong-Hyuk Lee
  • Patent number: 7696687
    Abstract: An organic EL display device, and a manufacturing method thereof, including a rear substrate, and an organic EL portion formed on a surface of the rear substrate. The organic EL portion includes a first electrode, an organic layer, and a second electrode sequentially stacked, and a nano-porous layer and a highly refractive layer are interposed between the rear substrate and the first electrode.
    Type: Grant
    Filed: June 24, 2005
    Date of Patent: April 13, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Joon-Gu Lee, Yoon-Chang Kim, Young-Woo Song, Sang-Hwan Cho, Ji-Hoon Ahn, Jong-Seok Oh, So-Young Lee
  • Patent number: 7659662
    Abstract: An electroluminescence (EL) display device is disclosed with a microlens layer positioned between a light-emission layer and a color converting layer or a color filter layer. The microlens layer can be formed separately or integrally with an electrode of the EL display device. Light emitted from the light-emitting layer passes through an electrode and then through the microlens layer, which has a higher refractive index than the electrode to focus light in a predetermined direction. The light then passes through the color converting layer or a color filter layer to emit red, green, or blue light from the device. The microlens layer and color converting layer or color filter layer can be disposed for either active matrix or passive matrix, and for either a top-emission type, bottom-emission type, or dual emission type EL display device for improved external light coupling efficiency and brightness.
    Type: Grant
    Filed: February 22, 2006
    Date of Patent: February 9, 2010
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Woo Song, Yoon-Chang Kim, Jong-Seok Oh, Sang-Hwan Cho, Ji-Hoon Ahn, Joon-Gu Lee, So-Young Lee, Jae-Heung Ha
  • Patent number: 7639414
    Abstract: A polarizer includes a base; a grid formed on the base; and low-reflective members formed on surfaces of the grid. The low-reflective members face an incident direction of an external light, so that a bright room contrast and a visibility can be improved.
    Type: Grant
    Filed: August 10, 2007
    Date of Patent: December 29, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Kyu-Hwan Hwang, Jae-Heung Ha, Young-Woo Song, Joon-Gu Lee, Jong-Hyuk Lee, Jong-Seok Oh, Chul-Woo Park
  • Publication number: 20090273728
    Abstract: A liquid crystal display apparatus includes a backlight unit, a second polarization layer, a liquid crystal layer disposed between the backlight unit and the second polarization layer, a first polarization layer disposed between the backlight unit and the liquid crystal layer. In an embodiment, a surface of the first polarization layer facing the backlight unit includes a reflective surface and a surface of the first polarization layer facing the backlight unit includes an absorbent surface. In another embodiment, the first polarization layer includes grids, which include a metal, and absorbing members, which include dielectric materials. In another embodiment, the first polarization layer includes grids, each of which includes a first component including a dielectric material and a second component including a metal.
    Type: Application
    Filed: April 24, 2009
    Publication date: November 5, 2009
    Inventors: Young-Woo Song, Jong-Hyuk Lee, Kyu-Hwan Hwang, Jong-Seok Oh, Joon-Gu Lee, Jae-Heung Ha, Chul-Woo Park
  • Patent number: 7598671
    Abstract: A flat panel display and a method of manufacturing the same are disclosed. In one embodiment, the flat panel display includes a substrate, a plurality of pixels formed on the substrate, and a light resonating layer formed on the subpixels. Each of the pixels includes subpixels that emit red light, green light, and blue light, respectively. The light resonating layer includes two or more layers and varies in thickness depending on the colors of the light emitted from the subpixels.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: October 6, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Woo Song, Yoon-Chang Kim, Jong-Seok Oh, Sang-Hwan Cho, Ji-Hoon Ahn, Joon-Gu Lee, So-Young Lee, Jae-Heung Ha
  • Patent number: 7595586
    Abstract: An organic electroluminescent display device and a method of producing the same are provided. The organic electroluminescent display device includes: a substrate; and an organic electroluminescent unit formed on a surface of the substrate and including a first electrode, an organic layer and a second electrode sequentially deposited on the substrate, in which the organic electroluminescent display device includes a diffraction grating layer having low refractive gratings and high refractive gratings alternately formed parallel to the substrate, and a high refractive layer formed on the diffraction grating layer interposed between the substrate and the first electrode.
    Type: Grant
    Filed: November 29, 2005
    Date of Patent: September 29, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Jong-Seok Oh, Yoon-Chang Kim, Young-Woo Song, Ji-Hoon Ahn, Sang-Hwan Cho, So-Young Lee, Joon-Gu Lee
  • Patent number: 7579775
    Abstract: An electroluminescence (EL) display device with improved external light coupling efficiency and brightness that can be easily manufactured and a method of manufacturing the EL display device are disclosed. In one embodiment, the EL display device includes a substrate, a first electrode formed above the substrate, a second electrode formed above the first electrode and facing the first electrode, a first intermediate layer including a luminescence layer and disposed between the first and second electrodes, a color converting layer disposed on top of the second electrode and a diffraction grating disposed between the second electrode and the color converting layer.
    Type: Grant
    Filed: December 8, 2005
    Date of Patent: August 25, 2009
    Assignee: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Woo Song, Yoon-Chang Kim, Jong-Seok Oh, Sang-Hwan Cho, Ji-Hoon Ahn, Joon-Gu Lee, So-Young Lee, Jae-Heung Ha
  • Publication number: 20090142983
    Abstract: A flat panel display and a method of manufacturing the same are disclosed. In one embodiment, the manufacturing method includes: i) preparing a substrate, ii) forming a plurality of subpixels on the substrate and iii) forming a light resonating layer including two or more layers on the subpixels, wherein the light resonating layer varies in thickness depending on the subpixels. According to at least one embodiment, it is possible to improve the brightness and the external light coupling efficiency. Further, it is possible to easily manufacture the light resonating layer with the structure in which the low refractive layers alternate with the high refractive layers.
    Type: Application
    Filed: February 5, 2009
    Publication date: June 4, 2009
    Applicant: Samsung Mobile Display Co., Ltd.
    Inventors: Young-Woo Song, Yoon-Chang Kim, Jong-Seok Oh, Sang-Hwan Cho, Ji-Hoon Ahn, Joon-Gu Lee, So-Young Lee, Jae-Heung Ha
  • Patent number: 7473932
    Abstract: An organic light emitting device (OLED) and a method for manufacturing the same are disclosed. In one embodiment, the OLED includes i) a pixel layer having a first electrode, a second electrode, and a light emitting portion interposed between the first electrode and the second electrode and having at least an emission layer, ii) a transparent member disposed in a direction in which light generated from the pixel layer is transmitted, iii) a diffraction grating disposed between the pixel layer and the transparent member, and iv) a low-refractive layer made of a material having a refractive index less than that of a material forming the transparent member, the low-refractive layer disposed between the diffraction grating and the transparent member. The OLED can prevent image spreading and deterioration in color purity while having enhanced light coupling efficiency.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: January 6, 2009
    Assignee: Samsung SDI Co., Ltd.
    Inventors: Sang-Hwan Cho, Yoon-Chang Kim, Young-Woo Song, Ji-Hoon Ahn, Jong-Seok Oh, Joon-Gu Lee, So-Young Lee
  • Publication number: 20080225389
    Abstract: A polarizer and a flat panel display apparatus including the polarizer are provided. The polarizer includes: a base; and a plurality of grids on the base, the plurality of grids including a first component and a second component, and having a thickness in a thickness direction of the polarizer. The first component includes a dielectric material and the second component includes a metal. The first component and the second component have a concentration gradient in the thickness direction, wherein a concentration of the first component in the grids increases along a thickness direction toward the external light incidence side, and a concentration of the second component in the grids increases along a thickness direction away from the external light incidence side.
    Type: Application
    Filed: August 10, 2007
    Publication date: September 18, 2008
    Inventors: Jong-Seok Oh, Jong-Hyuk Lee, Young-Woo Song, Kyu-Hwan Hwang, Joon-Gu Lee, Jae-Heung Ha, Chul-Woo Park
  • Publication number: 20080218067
    Abstract: A display device includes a substrate, a white light source on the substrate, a dichroic layer between a viewing surface of the display device and the white light source, the dichroic layer being configured to allow light of a predetermined wavelength band to be transmitted therethrough, and a ¼ wavelength layer between the dichroic layer and the white light source.
    Type: Application
    Filed: March 5, 2008
    Publication date: September 11, 2008
    Inventors: Joon-Gu Lee, Young-Woo Song, Kyu-Hwan Hwang, Jong-Seok Oh, Jae-Heung Ha, Chul-Woo Park, Jong-Hyuk Lee
  • Publication number: 20080165243
    Abstract: A print head includes a light source, a driver chip electrically connected to the light source and a lens array on the side of light irradiation of the light source. The light source includes a substrate and a plurality of organic light emitting diodes arranged in adjacent groups on the substrate. Each of the organic light emitting diodes of a group includes a first electrode, an organic emissive layer, and a second electrode. First wires on the substrate connect each first electrode to a first electrode in an adjacent group. A separator is located between the adjacent groups. A first pad on the substrate is electrically connected to each first electrode of each of the organic light emitting diodes of a first group and a plurality of second pads are located on the substrate, each second pad electrically connected to the second electrode of each group.
    Type: Application
    Filed: September 12, 2007
    Publication date: July 10, 2008
    Applicant: SAMSUNG SDI CO., LTD.
    Inventors: Jong-Seok Oh, Jong-hyuk Lee, Young-Woo Song, Kyu-Hwan Hwang, Joon-Gu Lee, Jae-Heung Ha, Chul-Woo Park