Patents by Inventor Kyung-Kook JANG

Kyung-Kook JANG 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: 11489092
    Abstract: A quantum-dot (QD) film, which includes a first QD layer including a first QD; and a first protection layer on the first QD layer and including a first organic compound, wherein the first organic compound includes at least two thiol groups, and a first one of the at least two thiol groups is anchored to the first QD, and an LED package, a QD light emitting diode and a display device including the QD film are provided.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: November 1, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Kook Jang, Jong-Kwan Bin, Seul-Gi Choi, Tae-Yang Lee
  • Patent number: 10873048
    Abstract: A quantum-dot (QD) light emitting diode and a quantum-dot light emitting display device are disclosed. The QD light emitting diode includes first and second electrodes facing each other; a QD emitting material layer between the first and second electrodes and including a QD; a first charge auxiliary layer between the first electrode and the QD emitting material layer; and a second charge auxiliary layer between the QD emitting material layer and the second electrode, wherein the QD includes a core, a shell surrounding the core and a ligand contacting a portion of the shell, and wherein the first charge auxiliary layer contacts the ligand, and the second charge auxiliary layer contacts the shell.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: December 22, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Tae-Yang Lee, Jong-Kwan Bin, Kyung-Kook Jang, Seul-Gi Choi
  • Patent number: 10770623
    Abstract: An emitting diode includes a first electrode in a first pixel; a first emitting layer positioned on the first electrode and in the first pixel and including a first amorphous oxide semiconductor material and a first quantum dot, wherein the first amorphous oxide semiconductor material includes an indium atom, a gallium atom and a zinc atom; and a second electrode covering the first emitting layer.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: September 8, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Ji-Yeon Kang, Kyung-Kook Jang, So-Mang Kim
  • Patent number: 10741731
    Abstract: A multi-emission quantum dot includes a first core having a first thickness along an axis from a first surface to a second surface of the first core, a first shell enclosing the first core, a second core surrounding the first shell. The second core may has a second thickness along the same axis smaller than the first thickness. The quantum dot also includes a second shell enclosing the second core. The first core may be configured to emit light of a first color, and the second core may be configured to emit light of a second color different from the first color.
    Type: Grant
    Filed: September 18, 2018
    Date of Patent: August 11, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Kook Jang, Ji-Yeon Kang, So-Mang Kim
  • Publication number: 20200135984
    Abstract: A quantum-dot (QD) film, which includes a first QD layer including a first QD; and a first protection layer on the first QD layer and including a first organic compound, wherein the first organic compound includes at least two thiol groups, and a first one of the at least two thiol groups is anchored to the first QD, and an LED package, a QD light emitting diode and a display device including the QD film are provided.
    Type: Application
    Filed: October 30, 2019
    Publication date: April 30, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Kyung-Kook JANG, Jong-Kwan BIN, Seul-Gi CHOI, Tae-Yang LEE
  • Publication number: 20200119297
    Abstract: A quantum-dot (QD) light emitting diode and a quantum-dot light emitting display device are disclosed. The QD light emitting diode includes first and second electrodes facing each other; a QD emitting material layer between the first and second electrodes and including a QD; a first charge auxiliary layer between the first electrode and the QD emitting material layer; and a second charge auxiliary layer between the QD emitting material layer and the second electrode, wherein the QD includes a core, a shell surrounding the core and a ligand contacting a portion of the shell, and wherein the first charge auxiliary layer contacts the ligand, and the second charge auxiliary layer contacts the shell.
    Type: Application
    Filed: October 11, 2019
    Publication date: April 16, 2020
    Applicant: LG Display Co., Ltd.
    Inventors: Tae-Yang LEE, Jong-Kwan BIN, Kyung-Kook JANG, Seul-Gi CHOI
  • Patent number: 10516127
    Abstract: A quantum rod panel includes a first substrate and a second substrate facing each other, a pixel electrode and a common electrode over the first substrate and spaced apart from each other, and a quantum rod layer between the pixel electrode and the common electrode and including quantum rods and metal particles.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: December 24, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sung-Il Woo, Byung-Geol Kim, Kyu-Nam Kim, Kyung-Kook Jang, Tae-Yang Lee
  • Patent number: 10450507
    Abstract: A quantum dot includes a seed and a core enclosing the seed. The core is grown from the seed to improve size uniformity of the core. The seed includes a first compound without Cd. The first compound may be GaP. The core may include a second compound including elements from group XIII and group XV. The second compound may be InP. The quantum dot may also include a first shell of a third compound enclosing the core. The third compound may be ZnSe or ZnS. The quantum dot may also include a second shell of a fourth compound enclosing the first shell. The fourth compound may be ZnS when the third compound is ZnSe. Embodiments also relate to a quantum dot including first to third elements selected from XIII group elements and XV group elements and fourth to sixth elements selected from XII group elements and XVI group elements.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: October 22, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Kook Jang, Byung-Geol Kim, Wy-Yong Kim, Kyu-Nam Kim, Hee-Yeol Kim, Sung-Il Woo, Do-Hyung Kim, Tae-Yang Lee
  • Patent number: 10431712
    Abstract: An optical member for a multi-panel display device according to an embodiment includes a first optical member located on a first display device and including optical fibers, a second optical member located on a second display device neighboring the first display device and including optical fibers, and an optical fiber triangular bar located to overlap a region where the first and second optical members are adjacent to each other, and including optical fibers, wherein each of the first and second optical members includes a chamfer portion corresponding to the optical fiber triangular bar at the region where the first and second optical members are adjacent to each other.
    Type: Grant
    Filed: September 18, 2017
    Date of Patent: October 1, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Kook Jang, Byung-Geol Kim, Dong-Young Kim, So-Mang Kim
  • Patent number: 10364391
    Abstract: A quantum dot includes a seed and a core enclosing the seed. The core is grown from the seed to improve size uniformity of the core. The seed includes a first compound without Cd. The first compound may be GaP. The core may include a second compound including elements from group XIII and group XV. The second compound may be InP. The quantum dot may also include a first shell of a third compound enclosing the core. The third compound may be ZnSe or ZnS. The quantum dot may also include a second shell of a fourth compound enclosing the first shell. The fourth compound may be ZnS when the third compound is ZnSe. Embodiments also relate to a quantum dot including first to third elements selected from XIII group elements and XV group elements and fourth to sixth elements selected from XII group elements and XVI group elements.
    Type: Grant
    Filed: August 26, 2016
    Date of Patent: July 30, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Kook Jang, Byung-Geol Kim, Wy-Yong Kim, Kyu-Nam Kim, Hee-Yeol Kim, Sung-Il Woo, Do-Hyung Kim, Tae-Yang Lee
  • Patent number: 10287497
    Abstract: A quantum rod luminescent display device includes a first substrate having a plurality of pixel regions; a plurality of first electrodes alternately arranged with a plurality of second electrodes in each of the plurality of pixel regions; a plurality of quantum rod compound layers over the first electrodes and the second electrodes, respectively in each of the plurality of pixel regions, each of the quantum rod compound layers including a quantum rod having a core, a shell surrounding the core, and an electron acceptor; a second substrate facing the first substrate; and a backlight unit at an outer surface of the first substrate. The electron acceptor is attached to or adjacent to the quantum rod.
    Type: Grant
    Filed: December 1, 2015
    Date of Patent: May 14, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyu-Nam Kim, Jin-Wuk Kim, Byung-Geol Kim, Sung-Woo Kim, Kyung-Kook Jang, Hee-Yeol Kim, Sung-Il Woo
  • Publication number: 20190131492
    Abstract: An emitting diode includes a first electrode in a first pixel; a first emitting layer positioned on the first electrode and in the first pixel and including a first amorphous oxide semiconductor material and a first quantum dot, wherein the first amorphous oxide semiconductor material includes an indium atom, a gallium atom and a zinc atom; and a second electrode covering the first emitting layer.
    Type: Application
    Filed: October 24, 2018
    Publication date: May 2, 2019
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Ji-Yeon KANG, Kyung-Kook JANG, So-Mang KIM
  • Publication number: 20190103524
    Abstract: A multi-emission quantum dot includes a first core having a first thickness along an axis from a first surface to a second surface of the first core, a first shell enclosing the first core, a second core surrounding the first shell. The second core may has a second thickness along the same axis smaller than the first thickness. The quantum dot also includes a second shell enclosing the second core. The first core may be configured to emit light of a first color, and the second core may be configured to emit light of a second color different from the first color.
    Type: Application
    Filed: September 18, 2018
    Publication date: April 4, 2019
    Inventors: Kyung-Kook JANG, Ji-Yeon KANG, So-Mang KIM
  • Patent number: 10217882
    Abstract: A quantum rod, a synthesis method of the quantum rod and a quantum rod display device are discussed. The quantum rod according to an embodiment includes a core, a first shell covering the core, and a second shell covering a side of the first shell. In the quantum rod, a first thickness of the first shell is greater than a second thickness of the second shell, and a first length of the first shell is smaller than a second length of the second shell.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: February 26, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Kook Jang, Byung-Geol Kim, Wy-Yong Kim, Kyu-Nam Kim, Sung-Il Woo
  • Patent number: 10174249
    Abstract: Embodiments relate to a quantum rod composition, a quantum rod film, a display device with a quantum rod film, and a method of forming a quantum rod film. The quantum rod film includes a plurality of quantum rods and a polymer with a dipole side chain. Responsive to an external electric field, the major axis of the quantum rods and an axis of the dipole side chain arranges in the same direction. The display device includes a plurality of pixel and common electrodes for generating an electric field, and a backlight unit positioned under a first substrate. Responsive to receiving light from the backlight unit, the quantum rod film emits light polarized in a direction parallel to the major axis of the quantum rods.
    Type: Grant
    Filed: November 6, 2015
    Date of Patent: January 8, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Kyu-Nam Kim, Jin-Wuk Kim, Byung-Geol Kim, Kyung-Kook Jang, Hee-Yeol Kim, Sung-Il Woo, Tae-Yang Lee
  • Publication number: 20180102493
    Abstract: A quantum rod panel includes a first substrate and a second substrate facing each other, a pixel electrode and a common electrode over the first substrate and spaced apart from each other, and a quantum rod layer between the pixel electrode and the common electrode and including quantum rods and metal particles.
    Type: Application
    Filed: October 4, 2017
    Publication date: April 12, 2018
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Sung-Il WOO, Byung-Geol KIM, Kyu-Nam KIM, Kyung-Kook JANG, Tae-Yang LEE
  • Publication number: 20180083158
    Abstract: An optical member for a multi-panel display device according to an embodiment includes a first optical member located on a first display device and including optical fibers, a second optical member located on a second display device neighboring the first display device and including optical fibers, and an optical fiber triangular bar located to overlap a region where the first and second optical members are adjacent to each other, and including optical fibers, wherein each of the first and second optical members includes a chamfer portion corresponding to the optical fiber triangular bar at the region where the first and second optical members are adjacent to each other.
    Type: Application
    Filed: September 18, 2017
    Publication date: March 22, 2018
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyung-Kook JANG, Byung-Geol KIM, Dong-Young KIM, So-Mang KIM
  • Publication number: 20180074254
    Abstract: A quantum rod, a synthesis method of the quantum rod and a quantum rod display device are discussed. The quantum rod according to an embodiment includes a core, a first shell covering the core, and a second shell covering a side of the first shell. In the quantum rod, a first thickness of the first shell is greater than a second thickness of the second shell, and a first length of the first shell is smaller than a second length of the second shell.
    Type: Application
    Filed: September 12, 2017
    Publication date: March 15, 2018
    Applicant: LG DISPLAY CO., LTD.
    Inventors: Kyung-Kook JANG, Byung-Geol KIM, Wy-Yong KIM, Kyu-Nam KIM, Sung-Il WOO
  • Publication number: 20170058199
    Abstract: A quantum dot includes a seed and a core enclosing the seed. The core is grown from the seed to improve size uniformity of the core. The seed includes a first compound without Cd. The first compound may be GaP. The core may include a second compound including elements from group XIII and group XV. The second compound may be InP. The quantum dot may also include a first shell of a third compound enclosing the core. The third compound may be ZnSe or ZnS. The quantum dot may also include a second shell of a fourth compound enclosing the first shell. The fourth compound may be ZnS when the third compound is ZnSe. Embodiments also relate to a quantum dot including first to third elements selected from XIII group elements and XV group elements and fourth to sixth elements selected from XII group elements and XVI group elements.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 2, 2017
    Inventors: Kyung-Kook JANG, Byung-Geol KIM, Wy-Yong KIM, Kyu-Nam KIM, Hee-Yeol KIM, Sung-Il WOO, Do-Hyung KIM, Tae-Yang LEE
  • Publication number: 20170058194
    Abstract: A quantum dot includes a seed and a core enclosing the seed. The core is grown from the seed to improve size uniformity of the core. The seed includes a first compound without Cd. The first compound may be GaP. The core may include a second compound including elements from group XIII and group XV. The second compound may be InP. The quantum dot may also include a first shell of a third compound enclosing the core. The third compound may be ZnSe or ZnS. The quantum dot may also include a second shell of a fourth compound enclosing the first shell. The fourth compound may be ZnS when the third compound is ZnSe. Embodiments also relate to a quantum dot including first to third elements selected from XIII group elements and XV group elements and fourth to sixth elements selected from XII group elements and XVI group elements.
    Type: Application
    Filed: August 26, 2016
    Publication date: March 2, 2017
    Inventors: Kyung-Kook JANG, Byung-Geol KIM, Wy-Yong KIM, Kyu-Nam KIM, Hee-Yeol KIM, Sung-Il WOO, Do-Hyung KIM, Tae-Yang LEE