Patents by Inventor Hyun A. KANG

Hyun A. KANG 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: 12189170
    Abstract: A light source includes a light emitting element which emits light, and a light conversion layer which converts the light emitted from the light emitting element into white light and emits the white light, where the light conversion layer includes a resin and a quantum dot material mixed with the resin, and a red apex of a color region of the white light is positioned in a region of 0.65<Cx<0.69 and 0.29<Cy<0.3370 in color coordinates, and a green apex of a color region of the white light is positioned in a region of 0.17<Cx<0.31 and 0.61<Cy<0.70 in the color coordinates.
    Type: Grant
    Filed: January 14, 2022
    Date of Patent: January 7, 2025
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae Hyung Kim, Eun Joo Jang, Shin Ae Jun, Hyun A Kang, Yongwook Kim, Na Youn Won, Hyo Sook Jang
  • Patent number: 12060510
    Abstract: Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Grant
    Filed: April 17, 2023
    Date of Patent: August 13, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae Hyung Kim, Hyun A Kang, Eun Joo Jang, Dae Young Chung
  • Patent number: 11993725
    Abstract: A barrier film comprising: a substrate; a first layer disposed on the substrate and comprising an oxidation product of polysilazane; and a second layer disposed directly on the first layer and comprising a thiol-ene polymer, wherein the polysilazane comprises a repeating unit represented by Chemical Formula 1, wherein R1 and R2 are each independently hydrogen, an aliphatic hydrocarbon group, an alicyclic hydrocarbon group, an alkylsilyl group, an alkylamino group, an alkoxy group, or an aromatic hydrocarbon group, and wherein the thiol-ene polymer is a polymerization product of a monomer combination including a first monomer having at least two thiol groups at its terminal end and a second monomer having at least two carbon-carbon unsaturated bond-containing groups at its terminal end.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: May 28, 2024
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tomoyuki Kikuchi, EunJoo Jang, Hyun A Kang, Nayoun Won, Oul Cho
  • Publication number: 20230392074
    Abstract: A semiconductor nanocrystal particle including zinc (Zn), tellurium (Te) and selenium (Se), a method of producing the same, and an electronic device including the same are disclosed. In the semiconductor nanocrystal particle, an amount of the tellurium is less than an amount of the selenium, the particle includes a core including a first semiconductor material including zinc, tellurium, and selenium and a shell disposed on at least a portion of the core and including a second semiconductor material having a different composition from the first semiconductor material, and the semiconductor nanocrystal particle emits blue light including a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Application
    Filed: August 21, 2023
    Publication date: December 7, 2023
    Inventors: Jeong Hee LEE, Eun Joo JANG, Hyun A KANG, Tae Hyung KIM
  • Patent number: 11834597
    Abstract: A method of producing a quantum dot comprising zinc selenide, the method comprising: providing an organic ligand mixture comprising a carboxylic acid compound, a primary amine compound, a secondary amide compound represented by Chemical Formula 1, and a first organic solvent: RCONHR??Chemical Formula 1 wherein each R is as defined herein; heating the organic ligand mixture in an inert atmosphere at a first temperature to obtain a heated organic ligand mixture; adding a zinc precursor, a selenium precursor, and optionally a tellurium precursor to the heated organic ligand mixture to obtain a reaction mixture, wherein the zinc precursor does not comprise oxygen; and heating the reaction mixture at a first reaction temperature to synthesize a first semiconductor nanocrystal particle.
    Type: Grant
    Filed: November 22, 2021
    Date of Patent: December 5, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Hee Lee, Hyun A Kang, Sung Woo Kim, Jin A Kim, Tae Hyung Kim, Yuho Won, Eun Joo Jang
  • Patent number: 11767472
    Abstract: A semiconductor nanocrystal particle including zinc (Zn), tellurium (Te) and selenium (Se), a method of producing the same, and an electronic device including the same are disclosed. In the semiconductor nanocrystal particle, an amount of the tellurium is less than an amount of the selenium, the particle includes a core including a first semiconductor material including zinc, tellurium, and selenium and a shell disposed on at least a portion of the core and including a second semiconductor material having a different composition from the first semiconductor material, and the semiconductor nanocrystal particle emits blue light including a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Grant
    Filed: March 31, 2022
    Date of Patent: September 26, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Hee Lee, Eun Joo Jang, Hyun A Kang, Tae Hyung Kim
  • Publication number: 20230272277
    Abstract: Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Application
    Filed: April 17, 2023
    Publication date: August 31, 2023
    Inventors: Tae Hyung KIM, Hyun A KANG, Eun Joo JANG, Dae Young CHUNG
  • Patent number: 11643597
    Abstract: Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: May 9, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae Hyung Kim, Hyun A Kang, Eun Joo Jang, Dae Young Chung
  • Patent number: 11567360
    Abstract: A backlight unit for a liquid crystal display device, the backlight unit including: an light emitting diode (“LED”) light source; a light conversion layer disposed separate from the LED light source to convert light emitted from the LED light source to white light and to provide the white light to the liquid crystal panel; and a light guide panel disposed between the LED light source and the light conversion layer, wherein the light conversion layer includes a semiconductor nanocrystal and a polymer matrix, and wherein the polymer matrix includes a first polymerized polymer of a first monomer including at least two thiol (—SH) groups, each located at a terminal end of the first monomer, and a second monomer including at least two unsaturated carbon-carbon bonds, each located at a terminal end of the second monomer.
    Type: Grant
    Filed: August 10, 2020
    Date of Patent: January 31, 2023
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyun A Kang, Eun Joo Jang, Hyo Sook Jang, Shin Ae Jun
  • Patent number: 11421151
    Abstract: A light emitting device including a semiconductor nanocrystal and a ligand bound to a surface of the semiconductor nanocrystal, wherein the ligand includes an organic thiol ligand or a salt thereof and a polyvalent metal compound including a metal including Zn, In, Ga, Mg, Ca, Sc, Sn, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Sr, Y, Zr, Nb, Mo, Cd, Ba, Au, Hg, Tl, or a combination thereof, and a display device including the light emitting device.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: August 23, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Oul Cho, Jooyeon Ahn, Eun Joo Jang, Dae Young Chung, Hyun A Kang, Tae Hyung Kim, Yun Sung Woo, Jeong Hee Lee, Shin Ae Jun
  • Publication number: 20220220379
    Abstract: A semiconductor nanocrystal particle including zinc (Zn), tellurium (Te) and selenium (Se), a method of producing the same, and an electronic device including the same are disclosed. In the semiconductor nanocrystal particle, an amount of the tellurium is less than an amount of the selenium, the particle includes a core including a first semiconductor material including zinc, tellurium, and selenium and a shell disposed on at least a portion of the core and including a second semiconductor material having a different composition from the first semiconductor material, and the semiconductor nanocrystal particle emits blue light including a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Application
    Filed: March 31, 2022
    Publication date: July 14, 2022
    Inventors: Jeong Hee LEE, Eun Joo JANG, Hyun A KANG, Tae Hyung KIM
  • Publication number: 20220137286
    Abstract: A light source includes a light emitting element which emits light, and a light conversion layer which converts the light emitted from the light emitting element into white light and emits the white light, where the light conversion layer includes a resin and a quantum dot material mixed with the resin, and a red apex of a color region of the white light is positioned in a region of 0.65<Cx<0.69 and 0.29<Cy<0.3370 in color coordinates, and a green apex of a color region of the white light is positioned in a region of 0.17<Cx<0.31 and 0.61<Cy<0.70 in the color coordinates.
    Type: Application
    Filed: January 14, 2022
    Publication date: May 5, 2022
    Inventors: Tae Hyung KIM, Eun Joo JANG, Shin Ae JUN, Hyun A KANG, Yongwook KIM, Na Youn WON, Hyo Sook JANG
  • Patent number: 11319487
    Abstract: A semiconductor nanocrystal particle including zinc (Zn), tellurium (Te) and selenium (Se), a method of producing the same, and an electronic device including the same are disclosed. In the semiconductor nanocrystal particle, an amount of the tellurium is less than an amount of the selenium, the particle includes a core including a first semiconductor material including zinc, tellurium, and selenium and a shell disposed on at least a portion of the core and including a second semiconductor material having a different composition from the first semiconductor material, and the semiconductor nanocrystal particle emits blue light including a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: May 3, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Hee Lee, Eun Joo Jang, Hyun A Kang, Tae Hyung Kim
  • Publication number: 20220081614
    Abstract: A method of producing a quantum dot comprising zinc selenide, the method comprising: providing an organic ligand mixture comprising a carboxylic acid compound, a primary amine compound, a secondary amide compound represented by Chemical Formula 1, and a first organic solvent: RCONHR??Chemical Formula 1 wherein each R is as defined herein; heating the organic ligand mixture in an inert atmosphere at a first temperature to obtain a heated organic ligand mixture; adding a zinc precursor, a selenium precursor, and optionally a tellurium precursor to the heated organic ligand mixture to obtain a reaction mixture, wherein the zinc precursor does not comprise oxygen; and heating the reaction mixture at a first reaction temperature to synthesize a first semiconductor nanocrystal particle.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 17, 2022
    Inventors: Jeong Hee LEE, Hyun A KANG, Sung Woo KIM, Jin A KIM, Tae Hyung KIM, Yuho WON, Eun Joo JANG
  • Patent number: 11226447
    Abstract: A light source includes a light emitting element which emits light, and a light conversion layer which converts the light emitted from the light emitting element into white light and emits the white light, where the light conversion layer includes a resin and a quantum dot material mixed with the resin, and a red apex of a color region of the white light is positioned in a region of 0.65<Cx<0.69 and 0.29<Cy<0.3370 in color coordinates, and a green apex of a color region of the white light is positioned in a region of 0.17<Cx<0.31 and 0.61<Cy<0.70 in the color coordinates.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: January 18, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae Hyung Kim, Eun Joo Jang, Shin Ae Jun, Hyun A Kang, Yongwook Kim, Na Youn Won, Hyo Sook Jang
  • Patent number: 11180694
    Abstract: A method of producing a quantum dot comprising zinc selenide, the method comprising: providing an organic ligand mixture comprising a carboxylic acid compound, a primary amine compound, a secondary amide compound represented by Chemical Formula 1, and a first organic solvent: RCONHR??Chemical Formula 1 wherein each R is as defined herein; heating the organic ligand mixture in an inert atmosphere at a first temperature to obtain a heated organic ligand mixture; adding a zinc precursor, a selenium precursor, and optionally a tellurium precursor to the heated organic ligand mixture to obtain a reaction mixture, wherein the zinc precursor does not comprise oxygen; and heating the reaction mixture at a first reaction temperature to synthesize a first semiconductor nanocrystal particle.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: November 23, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jeong Hee Lee, Hyun A Kang, Sung Woo Kim, Jin A Kim, Tae Hyung Kim, Yuho Won, Eun Joo Jang
  • Patent number: 11126028
    Abstract: A photoluminescent liquid crystal display includes: a liquid crystal panel including a lower substrate, an upper substrate, a liquid crystal layer interposed between the upper and lower substrates, and a photoluminescent color filter layer disposed between the upper substrate and the liquid crystal layer; an optical device disposed on the upper substrate; a polarizing plate disposed under the lower substrate; and a backlight unit disposed under the polarizing plate and which emits blue light, where the photoluminescent color filter layer includes a first color filter which emits polarized red light, a second color filter which emits polarized green light, and a third color filter which emits polarized blue light, and the first color filter and the second color filter include a semiconductor nanocrystal-polymer composite.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: September 21, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun Joo Jang, Shin Ae Jun, Hyun A Kang
  • Publication number: 20210198569
    Abstract: Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Application
    Filed: March 17, 2021
    Publication date: July 1, 2021
    Inventors: Tae Hyung KIM, Hyun A KANG, Eun Joo JANG, Dae Young CHUNG
  • Patent number: 11018311
    Abstract: An electronic device includes a first electrode and a second electrode facing each other, an emission layer comprising a plurality of quantum dots, wherein the emission layer is disposed between the first electrode and the second electrode; a first charge auxiliary layer disposed between the first electrode and the emission layer; and an optical functional layer disposed on the second electrode on a side opposite the emission layer, wherein the first electrode includes a reflecting electrode, wherein the second electrode is a light-transmitting electrode, wherein a region between the optical functional layer and the first electrode comprises a microcavity structure, and a refractive index of the optical functional layer is greater than or equal to a refractive index of the second electrode.
    Type: Grant
    Filed: February 21, 2020
    Date of Patent: May 25, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Dae Young Chung, Eun Joo Jang, Oul Cho, Hyun A Kang, Tae Hyung Kim, Yun Sung Woo, Jeong Hee Lee
  • Patent number: 10975299
    Abstract: Disclosed are a semiconductor nanocrystal particle including indium (In), zinc (Zn), and phosphorus (P), wherein a mole ratio of the zinc relative to the indium is greater than or equal to about 25:1, and the semiconductor nanocrystal particle includes a core including a first semiconductor material including indium, zinc, and phosphorus and a shell disposed on the core and including a second semiconductor material including zinc and sulfur, a method of producing the same, and an electronic device including the same. The semiconductor nanocrystal particle emits blue light having a maximum peak emission at a wavelength of less than or equal to about 470 nanometers.
    Type: Grant
    Filed: August 14, 2018
    Date of Patent: April 13, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tae Hyung Kim, Hyun A Kang, Eun Joo Jang, Dae Young Chung