Patents by Inventor Zhiqiang Ji

Zhiqiang Ji 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: 12274158
    Abstract: A compound including a first ligand LA having a structure of Formula I is disclosed. The compound is useful a an emitter dopants in OLEDs for enhancing the OLED performance.
    Type: Grant
    Filed: November 16, 2023
    Date of Patent: April 8, 2025
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Chun Lin, Zhiqiang Ji
  • Patent number: 12274157
    Abstract: A compound is disclosed that has a metal coordination complex structure having at least two ligands coordinated to the metal; wherein the compound has a first substituent R1 at one of the ligands' periphery; wherein a first distance is defined as the distance between the metal and one of the atoms in R1 where that atom is the farthest away from the metal among the atoms in R1; wherein the first distance is also longer than any other atom-to-metal distance between the metal and any other atoms in the compound; and wherein when a sphere having a radius r is defined whose center is at the metal and the radius r is the smallest radius that will allow the sphere to enclose all atoms in the compound that are not part of R1, the first distance is longer than the radius r by at least 2.9 ?.
    Type: Grant
    Filed: October 30, 2023
    Date of Patent: April 8, 2025
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Eric A. Margulies, Zhiqiang Ji, Jui-Yi Tsai, Chun Lin, Alexey Borisovich Dyatkin, Mingjuan Su, Bin Ma, Michael S. Weaver, Julia J. Brown, Lichang Zeng, Walter Yeager, Alan Deangelis, Chuanjun Xia
  • Publication number: 20250113724
    Abstract: A compound comprising a first ligand LA comprising a structure of Formula I, is provided. In Formula I, each of moiety A, moiety B, and moiety C is a monocyclic ring or a polycyclic fused ring system, where moiety A and moiety C comprise a nitrogen and moiety C is aromatic; each of Z1, Z2, Z3, and Z4 is C or N; each of K1 and K2 is a direct bond or a linker; Y is a linking group; each R, R?, RA, RB, RC, R?, and R? is hydrogen or a General Substituent defined herein; and the first ligand LA is coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.
    Type: Application
    Filed: August 30, 2024
    Publication date: April 3, 2025
    Applicant: Universal Display Corporation
    Inventors: Zhiqiang JI, Pierre-Luc T. BOUDREAULT
  • Publication number: 20250084114
    Abstract: A compound having a first ligand LA of Formula I, In Formula I, each of moiety B and moiety C is a monocyclic ring or a polycyclic fused ring system; each of Z1, X1, and X2 is C or N; K is a direct bond or a linker; each R?, R?, RA, RB, and RC is hydrogen or a General Substituents defined herein; at least one RA comprises an electron-withdrawing group, a silyl group, or a germyl group; LA is coordinated to a metal M, having an atomic mass of at least 40; and any two substituents may be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing the same are also provided.
    Type: Application
    Filed: August 2, 2024
    Publication date: March 13, 2025
    Applicant: Universal Display Corporation
    Inventors: Zhiqiang JI, Pierre-Luc T. BOUDREAULT
  • Patent number: 12247041
    Abstract: An OLED including an anode, a cathode, and an organic layer between the anode and the cathode, where the organic layer includes a compound having the formula [LA]3-nIr[LB]n is disclosed.
    Type: Grant
    Filed: June 23, 2023
    Date of Patent: March 11, 2025
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Zhiqiang Ji, Jui-Yi Tsai, Lichang Zeng, Alexey Borisovich Dyatkin, Walter Yeager, Eric Margulies, Pierre-Luc T. Boudreault
  • Patent number: 12250872
    Abstract: Provided is a new composition of matter for phosphorescent emitters containing a chelating ligand comprised of a fused heterocyclic structure containing boron. The disclosed ligands form two bonds to the metal forming a 6-membered chelate and can be further substituted to form tridentate or tetradentate ligands.
    Type: Grant
    Filed: August 24, 2020
    Date of Patent: March 11, 2025
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Jui-Yi Tsai, Pierre-Luc T. Boudreault, Alexey Borisovich Dyatkin, Jerald Feldman, Zhiqiang Ji, Hsiao-Fan Chen, Tyler Fleetham, Sean Michael Ryno, Rasha Hamze, Morgan C. Macinnis
  • Publication number: 20250081837
    Abstract: Provided are organometallic compounds comprising two moieties A and B which are each independently a monocyclic ring or a polycyclic fused ring structure, wherein the monocyclic ring or each ring of the polycyclic fused ring structure is independently a 5-membered to 10-membered carbocyclic or heterocyclic ring which are linked by a direct bond and which are further bridged by a linker comprising two groups which are each independently selected from the group consisting of O, S, Se, NR, BR, BRR?, PR, CR, C?O, C?NR, C?CRR?, C?S, CRR?, SO, SO2, P(O)R, SiRR?, and GeRR?. Also provided are formulations comprising these organometallic compounds. Further provided are organic light emitting devices (OLEDs) and related consumer products that utilize these organometallic compounds.
    Type: Application
    Filed: November 13, 2024
    Publication date: March 6, 2025
    Inventors: Alexey Borisovich Dyatkin, Zhiqiang Ji, Pierre-Luc T. Boudreault, Walter Yeager, Derek Ian Wozniak, Wei-Chun Shih, Hsiao-Fan Chen, Elena Sheina, Peter Wolohan, Wystan Neil Palmer
  • Patent number: 12240865
    Abstract: A compound comprising a first bidentate ligand LA, wherein LA comprises a structure of Formula I; wherein Z is selected from the group consisting of O, S, NR, BR, CRKRL, C?CRKRL, SiRKRL, —CRKRLCRMRN—, —SiRKRLSiRMRN—, —CRKRLO—, —SiRKRLO—, and —CRK?CRL—; wherein ring A, ring B, and ring C are each independently a 5-membered carbocyclic ring, 5-membered heterocyclic ring, 6-membered carbocyclic ring or 6-membered heterocyclic ring; wherein LA is coordinated to a metal M forming a 5-membered chelate ring; wherein M is selected from the group consisting of Ir, Pt, Pd, Ru, Rh, Os, Re, Cu, Ag, and Au; wherein RA, RB, and RC each represent mono to the maximum allowable substitution, or no substitution; wherein each R, RK, RL, RM, RN, RA, RB, and RC is independently a hydrogen or a substituent selected from the group consisting of deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, heterocycloalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, germyl, boryl, selenyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, a
    Type: Grant
    Filed: September 14, 2021
    Date of Patent: March 4, 2025
    Inventors: Alexey Borisovich Dyatkin, Jui-Yi Tsai, Walter Yeager, Pierre-Luc T. Boudreault, Zhiqiang Ji, Alan DeAngelis
  • Patent number: 12239013
    Abstract: Provided is an OLED structure includes an organic layer having a primary phosphorescent emitter and a first host; where one of the following conditions is true: (1) the organic layer further includes a secondary emitter; or (2) the OLED further includes a second organic layer where the second organic layer includes a secondary emitter. The primary phosphorescent emitter has a peak emission wavelength ?max that is ?600 nm and ?750 nm; the secondary emitter has a peak emission wavelength ?max that is ?750 nm; the primary phosphorescent emitter is capable of transferring energy to the secondary emitter; the first host has a lowest excited state triplet energy T1 that is at least 0.1 eV higher than that of the primary phosphorescent emitter; the primary phosphorescent emitter has the formula Pt(L1)m; L1 can represent one or more ligands that are the same or different; each L1 is independently monodentate or multidentate; and m represents a maximum possible number of ligands L1 that can coordinate to Pt.
    Type: Grant
    Filed: August 3, 2023
    Date of Patent: February 25, 2025
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Eric A. Margulies, Zhiqiang Ji, Nicholas J. Thompson, Geza Szigethy, Michael S. Weaver, Jerald Feldman
  • Publication number: 20250063938
    Abstract: A compound having a metal coordination complex structure, where the compound is capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature is disclosed. The compound has a first ligand coordinated to a metal. The free-state of the first ligand has a first triplet energy T1 of EL at 77K, while the compound has a first triplet energy T1 of E at 77K, and the difference in energy (?E) between E and EL is ?250 meV. The compound has a triplet emission spectrum with a FWHM value of no more than 45 nm. Organic light emitting devices, consumer products, and formulations containing the compounds are also disclosed.
    Type: Application
    Filed: November 6, 2024
    Publication date: February 20, 2025
    Applicant: Universal Display Corporation
    Inventors: Jui-Yi TSAI, Mingjuan SU, Eric A. MARGULIES, Zhiqiang JI, Alexey Borisovich DYATKIN, Walter YEAGER
  • Patent number: 12221455
    Abstract: Provided are organometallic compounds including a ligand LA of Formula I: Also provided are formulations including these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.
    Type: Grant
    Filed: September 9, 2021
    Date of Patent: February 11, 2025
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Alexey Borisovich Dyatkin, Jui-Yi Tsai, Walter Yeager, Pierre-Luc T. Boudreault, Zhiqiang Ji, Bert Alleyne
  • Publication number: 20250042927
    Abstract: A compound having a formula of M(LA)x(LB)y(LC)z is provided. In the formula, each of LA, LB, and LC is a bidentate ligand; M is a metal; LA has a structure of Formula I, moiety A is a monocyclic ring or a polycyclic fused ring system; moiety B is a polycyclic ring system comprising two 6-membered rings; Z1 to Z4 are C or N; K1 and L1 are each a direct bond or a linker; each R?, R?, RA and RB is hydrogen or a General Substituent; at least one RA or RB comprises RW, where RW has a structure of Formula II, or Formula III, In formulas II and III, R1 and R2 are H, D, or F; R3 is H, D, or alkyl; and at least one of R1 or R2 is H or D. Formulations, OLEDs, and consumer products containing the compound are also provided.
    Type: Application
    Filed: June 17, 2024
    Publication date: February 6, 2025
    Applicant: Universal Display Corporation
    Inventors: Pierre-Luc T. BOUDREAULT, Jerald FELDMAN, Zhiqiang JI, Derek Ian WOZNIAK, Bert ALLEYNE
  • Publication number: 20250034188
    Abstract: Provided are organometallic compounds. Also provided are formulations comprising these organometallic compounds. Further provided are OLEDs and related consumer products that utilize these organometallic compounds.
    Type: Application
    Filed: August 2, 2024
    Publication date: January 30, 2025
    Applicant: Universal Display Corporation
    Inventors: Zhiqiang JI, Pierre-Luc T. BOUDREAULT, Wei-Chun SHIH, Alan DEANGELIS
  • Publication number: 20250026774
    Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, moiety A is a carbocyclic or heterocyclic ring; Q is C, N, B, or Si; each of X1 to X5 is C or N; Y is a linking group; K is a direct bond or a linking group; each R, R?, R?, R?, R?, RA, RB, and RC is hydrogen or a General Substituent defined herein; no two RA are joined; and at least one RA, RB, or RC includes a silyl group or a germyl group. Formulations, OLEDs, and consumer products containing the same are also provided.
    Type: Application
    Filed: June 20, 2024
    Publication date: January 23, 2025
    Applicant: Universal Display Corporation
    Inventors: Alexey Borisovich DYATKIN, Zhiqiang JI, Pierre-Luc T. BOUDREAULT
  • Publication number: 20250011355
    Abstract: A compound of Formula Ir(LA)x(LB)y(LC)z is provided. In Formula Ir(LA)x(LB)y(LC)z, x, Y, and z are non-negative integers; x+y+z=3; LA has a structure of Formula I, LB and LC are bidentate ligands; moiety A is a monocyclic ring or a polycyclic fused ring system; ring C is a 5- or 6-membered heterocyclic ring; each of Z, Z1, X1 to X6 is independently C or N; each of X and Y is a linker that is one-atom in length; each independently represents a single bond or a double bond; each R, R?, RA, RB, and RC is hydrogen or a General Substituent defined herein. Formulations, OLEDs, and consumer products containing the compound are also provided.
    Type: Application
    Filed: June 4, 2024
    Publication date: January 9, 2025
    Applicant: Universal Display Corporation
    Inventors: Zhiqiang JI, Jui-Yi TSAI, Wei-Chun SHIH, Alexey Borisovich DYATKIN, Elena SHEINA, Pierre-Luc T. BOUDREAULT
  • Publication number: 20250002779
    Abstract: A compound comprising a first ligand LA of Formula I, is provided. In Formula I, each of X1 to X6 is C or N; K is a direct bond or a linker; each of L1 and L2 is a linker; each R, R?, R?, R?, RA, and RB is hydrogen or a General Substituent defined herein; two RB are joined to form a ring; LA is coordinated to a metal M. Formulations, OLEDs, and consumer products containing the compound are also provided.
    Type: Application
    Filed: June 6, 2024
    Publication date: January 2, 2025
    Applicant: Universal Display Corporation
    Inventors: Zhiqiang JI, Derek Ian WOZNIAK, Pierre-Luc T. BOUDREAULT, Alexey Borisovich DYATKIN
  • Publication number: 20250002516
    Abstract: Provided are compounds having a ligand LA of Formula I that are useful as emissive compounds in organic light emitting devices.
    Type: Application
    Filed: August 27, 2024
    Publication date: January 2, 2025
    Applicant: Universal Display Corporation
    Inventors: Wei-Chun SHIH, Hsiao-Fan CHEN, Pierre-Luc T. BOUDREAULT, Bert ALLEYNE, Zhiqiang JI
  • Publication number: 20250008833
    Abstract: A compound comprising a first ligand LA of Formula I, is provided. In the compound, X1 and X2 are C or N; YA and YC is each single atom bridges, which can be substituted; each RA, RB, and RC is a hydrogen or a General Substituent defined herein; LA is coordinated to a metal M, and LA may be joined with other ligands; and any two substituents may be joined or fused to form a ring. Formulations, OLEDs, and consumer products containing the compound are also provided.
    Type: Application
    Filed: May 20, 2024
    Publication date: January 2, 2025
    Applicant: Universal Display Corporation
    Inventors: Zhiqiang JI, Pierre-Luc T. BOUDREAULT
  • Patent number: 12171139
    Abstract: A compound having a metal coordination complex structure, where the compound is capable of functioning as a phosphorescent emitter in an organic light emitting device at room temperature is disclosed. The compound has a first ligand coordinated to a metal. The free-state of the first ligand has a first triplet energy T1 of EL at 77K, while the compound has a first triplet energy T1 of E at 77K, and the difference in energy (?E) between E and EL is ?250 meV. The compound has a triplet emission spectrum with a FWHM value of no more than 45 nm. Organic light emitting devices, consumer products, and formulations containing the compounds are also disclosed.
    Type: Grant
    Filed: May 18, 2023
    Date of Patent: December 17, 2024
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Jui-Yi Tsai, Eric A. Margulies, Zhiqiang Ji, Alexey Borisovich Dyatkin, Walter Yeager, Mingjuan Su
  • Patent number: 12171137
    Abstract: A compound comprising a ligand LA of Formula I coordinated to a metal M as represented by the dotted lines wherein ring A is a 5-membered or 6-membered carbocyclic or heterocyclic ring, and ring B is a multicyclic ring system comprising four to eight fused 5-membered or 6-membered, carbocyclic or heterocyclic rings; wherein the ring B includes a structure of Formula II wherein ring C is a 5-membered or 6-membered carbocyclic or heterocyclic ring, and the dotted lines of Formula II represent fusion of the structure of Formula II as part of the multicyclic ring system of ring B; T1, T2, and T3 are independently selected from N or C; and L is a linker L2-L1 with L2 and L1 independently selected from the group consisting of O, S, NRN, CR1R2, CR3R4, SiR1R2, and SiR3R4; wherein at least one of L1 or L2 is CR1CR2 or SiR1R2; and the metal M is selected from the group consisting of Ir, Rh, Re, Ru, Os, Pt, Pd, Au, and Cu.
    Type: Grant
    Filed: August 14, 2019
    Date of Patent: December 17, 2024
    Inventors: Zhiqiang Ji, Suman Layek, Alexey Borisovich Dyatkin, Jui-Yi Tsai, Pierre-Luc T. Boudreault