Patents by Inventor Sung Il Woo
Sung Il Woo 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).
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Patent number: 11849594Abstract: A quantum dot emitting diode includes first and second electrodes facing each other; a quantum dot emitting material layer between the first and second electrodes; and an electron transporting layer including an electron transporting material and disposed between the quantum dot emitting material layer and the second electrode, wherein the electron transporting material includes a core of metal oxide and a shell of silica.Type: GrantFiled: September 12, 2018Date of Patent: December 19, 2023Assignee: LG DISPLAY CO., LTD.Inventors: Min-Jee Kim, Sung-Il Woo, Hye-Ock Choi, Ji-Yeon Kang
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Patent number: 11228013Abstract: The present disclosure relates to a light-emitting diode including a first electrode and a second electrode facing each other; an electron transfer layer between the first electrode and the second electrode; and a light emitting material between the first electrode and the second electrode, wherein the electron transfer layer consists of anisotropic nanorods, and the long axes of the anisotropic nanorods are arranged at an angle of about 20 degrees to about 90 degrees with respect to an interface with an adjacent layer into which electrons are injected.Type: GrantFiled: October 19, 2018Date of Patent: January 18, 2022Assignee: LG DISPLAY CO., LTD.Inventors: Sung-Il Woo, Dong-Young Kim, Hye-Ock Choi
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Patent number: 11127913Abstract: A quantum-dot light emitting diode includes a first electrode; a second electrode facing the first electrode; a QD emitting material layer between the first and second electrodes and including a QD; a hole transporting layer between the first electrode and the QD emitting material layer and including a first hole transporting material; a first electron transporting layer between the QD emitting material layer and the second electrode; and a first electron control layer between the QD emitting material layer and the first electron transporting layer and including a second hole transporting material.Type: GrantFiled: November 21, 2019Date of Patent: September 21, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Sung-Il Woo, Byung-Geol Kim
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Patent number: 11050034Abstract: A quantum dot (QD) light emitting diode comprising first and second electrodes facing each other; a QD emitting material layer between the first and second electrodes; and a semiconducting member acting as a hole transporting path in the QD emitting material layer is provided.Type: GrantFiled: September 11, 2017Date of Patent: June 29, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Tae-Yang Lee, Kyu-Nam Kim, Sung-Il Woo
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Patent number: 10978659Abstract: The present disclosure relates to a illuminant comprising an inorganic luminescent particle having at least one metal component on a surface thereof, and an (iso) quinoline-based ligand coordinated to the at least one metal component, a light-emitting diode and a light-emitting device including the illuminant in an emitting material layer (EML). The illuminant enables white luminescence in the light-emitting diode with only single emissive unit.Type: GrantFiled: October 11, 2019Date of Patent: April 13, 2021Assignee: LG DISPLAY CO., LTD.Inventors: Byung-Geol Kim, Sung-Il Woo
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Publication number: 20200168827Abstract: A quantum-dot light emitting diode includes a first electrode; a second electrode facing the first electrode; a QD emitting material layer between the first and second electrodes and including a QD; a hole transporting layer between the first electrode and the QD emitting material layer and including a first hole transporting material; a first electron transporting layer between the QD emitting material layer and the second electrode; and a first electron control layer between the QD emitting material layer and the first electron transporting layer and including a second hole transporting material.Type: ApplicationFiled: November 21, 2019Publication date: May 28, 2020Applicant: LG Display Co., Ltd.Inventors: Sung-Il Woo, Byung-Geol Kim
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Publication number: 20200119298Abstract: The present disclosure relates to a illuminant comprising an inorganic luminescent particle having at least one metal component on a surface thereof, and an (iso) quinoline-based ligand coordinated to the at least one metal component, a light-emitting diode and a light-emitting device including the illuminant in an emitting material layer (EML). The illuminant enables white luminescence in the light-emitting diode with only single emissive unit.Type: ApplicationFiled: October 11, 2019Publication date: April 16, 2020Applicant: LG Display Co., Ltd.Inventors: Byung-Geol KIM, Sung-Il WOO
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Patent number: 10516127Abstract: 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: GrantFiled: October 4, 2017Date of Patent: December 24, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Sung-Il Woo, Byung-Geol Kim, Kyu-Nam Kim, Kyung-Kook Jang, Tae-Yang Lee
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Patent number: 10450507Abstract: 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: GrantFiled: August 26, 2016Date of Patent: October 22, 2019Assignee: 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
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Patent number: 10364391Abstract: 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: GrantFiled: August 26, 2016Date of Patent: July 30, 2019Assignee: 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
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Patent number: 10287497Abstract: 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: GrantFiled: December 1, 2015Date of Patent: May 14, 2019Assignee: 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
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Publication number: 20190081262Abstract: A quantum dot emitting diode includes first and second electrodes facing each other; a quantum dot emitting material layer between the first and second electrodes; and an electron transporting layer including an electron transporting material and disposed between the quantum dot emitting material layer and the second electrode, wherein the electron transporting material includes a core of metal oxide and a shell of silica.Type: ApplicationFiled: September 12, 2018Publication date: March 14, 2019Applicant: LG Display Co., Ltd.Inventors: Min-Jee KIM, Sung-Il WOO, Hye-Ock CHOI, Ji-Yeon KANG
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Patent number: 10217882Abstract: 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: GrantFiled: September 12, 2017Date of Patent: February 26, 2019Assignee: LG DISPLAY CO., LTD.Inventors: Kyung-Kook Jang, Byung-Geol Kim, Wy-Yong Kim, Kyu-Nam Kim, Sung-Il Woo
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Patent number: 10174249Abstract: 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: GrantFiled: November 6, 2015Date of Patent: January 8, 2019Assignee: 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
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Publication number: 20180123070Abstract: A quantum dot (QD) light emitting diode comprising first and second electrodes facing each other; a QD emitting material layer between the first and second electrodes; and a semiconducting member acting as a hole transporting path in the QD emitting material layer is provided.Type: ApplicationFiled: September 11, 2017Publication date: May 3, 2018Applicant: LG Display Co., Ltd.Inventors: Tae-Yang LEE, Kyu-Nam KIM, Sung-Il WOO
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Publication number: 20180102493Abstract: 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: ApplicationFiled: October 4, 2017Publication date: April 12, 2018Applicant: LG DISPLAY CO., LTD.Inventors: Sung-Il WOO, Byung-Geol KIM, Kyu-Nam KIM, Kyung-Kook JANG, Tae-Yang LEE
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Publication number: 20180074254Abstract: 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: ApplicationFiled: September 12, 2017Publication date: March 15, 2018Applicant: LG DISPLAY CO., LTD.Inventors: Kyung-Kook JANG, Byung-Geol KIM, Wy-Yong KIM, Kyu-Nam KIM, Sung-Il WOO
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Publication number: 20170058194Abstract: 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: ApplicationFiled: August 26, 2016Publication date: March 2, 2017Inventors: Kyung-Kook JANG, Byung-Geol KIM, Wy-Yong KIM, Kyu-Nam KIM, Hee-Yeol KIM, Sung-Il WOO, Do-Hyung KIM, Tae-Yang LEE
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Publication number: 20170058199Abstract: 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: ApplicationFiled: August 26, 2016Publication date: March 2, 2017Inventors: Kyung-Kook JANG, Byung-Geol KIM, Wy-Yong KIM, Kyu-Nam KIM, Hee-Yeol KIM, Sung-Il WOO, Do-Hyung KIM, Tae-Yang LEE
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Publication number: 20160137920Abstract: 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: ApplicationFiled: November 6, 2015Publication date: May 19, 2016Inventors: Kyu-Nam KIM, Jin-Wuk KIM, Byung-Geol KIM, Kyung-Kook JANG, Hee-Yeol KIM, Sung-Il WOO, Tae-Yang LEE