Patents by Inventor Chan Ho SOH

Chan Ho SOH 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).

  • OLED WITH HYBRID EMISSIVE LAYER
    Publication number: 20240324264
    Abstract: A hybrid emissive layer and OLED incorporating the same are provided. The hybrid emissive layer includes a first material having a triplet state energy level T1H and a singlet state energy level S1H, & second material having a triplet state energy level T1F and a singlet state energy level S1F; and a third material having a triplet state energy level T1P and a single state energy level S1P, where T1F?T1H; S1F?S1H; and T1P<T1H.
    Type: Application
    Filed: May 21, 2024
    Publication date: September 26, 2024
    Inventors: Mark E. Thompson, Abegail Tadle, Muazzam Idris, Karim El Roz, Daniel Sylvinson Muthiah Ravinson, Stephen R. Forrest, Chan Ho Soh
  • OLED with hybrid emissive layer
    Patent number: 12029055
    Abstract: A hybrid emissive layer and OLED incorporating the same are provided. The hybrid emissive layer includes a first material having a triplet state energy level T1H and a singlet state energy level S1H, a second material having a triplet state energy level T1F and a singlet state energy level S1F; and a third material having a triplet state energy level T1P and a single state energy level S1P, where T1FT1H; S1FS1H; and T1P<T1H.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: July 2, 2024
    Assignees: The University of Southern California, The Regents of the University of Michigan
    Inventors: Mark E. Thompson, Abegail Tadle, Muazzam Idris, Karim El Roz, Daniel Sylvinson Muthiah Ravinson, Stephen R. Forrest, Chan Ho Soh
  • OPTOELECTRONIC DEVICE INCLUDING ULTRATHIN DOPANT LAYERS
    Publication number: 20220181573
    Abstract: An optoelectronic device comprises a first electrode; a first host material layer positioned over the first electrode; a second host material layer positioned over the first host material layer; at least one ultrathin dopant layer positioned between the first and second host material layers, the at least one ultrathin dopant layer having a thickness of less than 2 ?; and a second electrode positioned over the second host material layers. Other organic optoelectronic devices are also disclosed.
    Type: Application
    Filed: November 19, 2021
    Publication date: June 9, 2022
    Inventors: Stephen R . Forrest, Chan Ho Soh
  • Hybrid organic light emitting device
    Patent number: 11342526
    Abstract: An OLED device comprises an anode and a cathode, and at least one graded emissive layer disposed between the anode and the cathode, the graded emissive layer comprising first and second materials, wherein a concentration of the first material increases continuously from an anode side of the graded emissive layer to a cathode side of the graded emissive layer, and a concentration of the second material decreases continuously from the anode side of the graded emissive layer to the cathode side of the graded emissive layer. An OLED device comprising a graded emissive layer and a hybrid white OLED device are also described.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: May 24, 2022
    Assignee: The Regents of the University of Michigan
    Inventors: Stephen R. Forrest, Chan Ho Soh, Mark E. Thompson, Muazzam Idris
  • HYBRID ORGANIC LIGHT EMITTING DEVICE
    Publication number: 20200243786
    Abstract: An OLED device comprises an anode and a cathode, and at least one graded emissive layer disposed between the anode and the cathode, the graded emissive layer comprising first and second materials, wherein a concentration of the first material increases continuously from an anode side of the graded emissive layer to a cathode side of the graded emissive layer, and a concentration of the second material decreases continuously from the anode side of the graded emissive layer to the cathode side of the graded emissive layer. An OLED device comprising a graded emissive layer and a hybrid white OLED device are also described.
    Type: Application
    Filed: January 17, 2020
    Publication date: July 30, 2020
    Inventors: Stephen R. Forrest, Chan Ho Soh, Mark E. Thompson, Muazzam Idris
  • OLED WITH HYBRID EMISSIVE LAYER
    Publication number: 20190237694
    Abstract: A hybrid emissive layer and OLED incorporating the same are provided. The hybrid emissive layer includes a first material having a triplet state energy level T1H and a singlet state energy level S1H, a second material having a triplet state energy level T1F and a singlet state energy level S1F; and a third material having a triplet state energy level T1P and a single state energy level S1P, where T1F?T1H; S1F?S1H; and T1P<T1H.
    Type: Application
    Filed: January 30, 2019
    Publication date: August 1, 2019
    Inventors: Mark E. THOMPSON, Abegail TADLE, Muazzam IDRIS, Karim EL ROZ, Daniel Sylvinson MUTHIAH RAVINSON, Stephen R. FORREST, Chan Ho SOH