Patents by Inventor Kit Yee Tsang

Kit Yee Tsang 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: 10991895
    Abstract: Ir phenyl parazolepyrazole complexes substituted with one or more strong electron withdrawing groups such as cyano groups resulted in enhancing the metal to ligand charge transfer (MLCT) which in turn resulted in enhanced emission efficiency and red shifted emission.
    Type: Grant
    Filed: October 5, 2016
    Date of Patent: April 27, 2021
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Raymond Kwong, Kit Yee Tsang, Siu Tung Lam, Chi Hang Lee, Sze Kui Lam
  • Patent number: 10418569
    Abstract: A family of phosphorescent emitter compounds containing a carbene ligand LA selected from the group consisting of: is disclosed. These compounds enhance the performance of OLEDs when incorporated therein.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: September 17, 2019
    Assignee: Universal Display Corporation
    Inventors: Raymond Kwong, Sze Kui Lam, Siu Tung Lam, Kit Yee Tsang, Chi Hang Lee, Geza Szigethy
  • Patent number: 10418568
    Abstract: A compound having a structure of Formula I: is described. In the structure of Formula I, RA, RB, and RC are each independently 5 or 6 membered aryl or heteroaryl rings; R1, R2, R3, and A are selected from a variety of substituents, including being joined or fused to form a ring; A is optionally bonded to at least one benzo or azabenzo ring to form fused rings; X1 is B, C, N, O, S or Se; and X2-X7 are independently B, C or N. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: September 17, 2019
    Assignee: Universal Display Corporation
    Inventors: Siu Tung Lam, Raymond Kwong, Chi Hang Lee, Kit Yee Tsang
  • Patent number: 10205105
    Abstract: The present invention includes novel borazarophenanthrene compounds, which may be used as hosts for phosphorescent emitters, charge transporters or emitters in OLEDs.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: February 12, 2019
    Assignee: Universal Display Corporation
    Inventors: Raymond Kwong, Kit Yee Tsang
  • Patent number: 10033004
    Abstract: A compound containing a partial structure of Formula I: is provided. In the structure of Formula I, M is a metal with an atomic number of at least 40; RA, RB, and RC are each independently 5 or 6 membered aryl or heteroaryl rings; R1, R2, R3, and A are each independently selected from a variety of substituents and combinations thereof; A is optionally bonded to RA or RC to form a fused ring; X1 is B, C, N, O, S or Se; X2-X7 are independently B, C or N; and Y1-Y2 are independently C or N. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.
    Type: Grant
    Filed: May 5, 2016
    Date of Patent: July 24, 2018
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Siu Tung Lam, Raymond Kwong, Chi Hang Lee, Kit Yee Tsang
  • Patent number: 9997712
    Abstract: The present disclosure provides novel compounds containing dibenzo[fg,op]tetracene and larger all-benzenoid moiety that can be used as hosts for phosphorescent emitters providing low-voltage, high-efficiency and high-stability devices.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: June 12, 2018
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Raymond Kwong, Kit Yee Tsang, Chuanjun Xia
  • Patent number: 9978956
    Abstract: A compound having a structure of Formula I: is provided. In the structure of Formula I, each one of X1 to X16 is independently CRX or N; each RX and R are independently selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, carbazole, azacarbazole, dibenzofuran, dibenzothiophene, dibenzoselenophene, azadibenzofuran, azadibenzothiophene, azadibenzoselenophene, triphenylene, azatriphenylene, and combinations thereof; and any adjacent RX can join to form fused or unfused rings. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: May 22, 2018
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Kit Yee Tsang, Chi Hang Lee, Raymond Kwong
  • Publication number: 20180047912
    Abstract: The present invention includes novel borazarophenanthrene compounds, which may be used as hosts for phosphorescent emitters, charge transporters or emitters in OLEDs.
    Type: Application
    Filed: April 5, 2017
    Publication date: February 15, 2018
    Inventors: Raymond Kwong, Kit Yee Tsang
  • Patent number: 9882151
    Abstract: A compound including a ligand L1 of Formula I, is described. In Formula I: rings A and B each independently represent a 5-membered or 6-membered carbocyclic or heterocyclic ring; X, Y, Z, and W are either carbon or nitrogen; R1 to R6 are selected from a variety of substituents, where adjacent substituents can be joined to form a fused ring; ligand L1 is coordinated to a metal M by X-M and Y-M bonds; and ligand L1 is optionally linked with other ligands to produce a tridentate, tetradentate, pentadentate or hexadentate ligand. Formulations and devices, such as an OLEDs, that include the compound that include a ligand L1 of Formula I are also described.
    Type: Grant
    Filed: October 29, 2015
    Date of Patent: January 30, 2018
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Raymond Kwong, Chi Hang Lee, Siu Tung Lam, Kit Yee Tsang, Geza Szigethy
  • Patent number: 9871212
    Abstract: Compounds having a structure according to Formula I, G1-L1-G2, or Formula V, are described. In Formula I, G1 and G2 independently have a structure of Formula II, In the structures of Formulae I, II, and V, L1 connects one of rings A1-A4 of G1 to one of rings A1-A4 of G2; L1 is selected from a direct bond, BR, NR, PR, O, S, Se, C?O, S?O, SO2, SiRR?, GeRR?, alkyl, cycloalkyl, aryl, heteroaryl, and combinations thereof; each ring A1, A2, A3, and A4, as well as R, R?R?, and R1 to R19 can be hydrogen or a variety of substituents, including a fused ring between adjacent substituents; and at least two adjacent R1 to R16 on the same ring are Formulations and devices, such as an OLEDs, that include the compound of Formula I or V are also described.
    Type: Grant
    Filed: November 5, 2015
    Date of Patent: January 16, 2018
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Raymond Kwong, Kit Yee Tsang
  • Patent number: 9780316
    Abstract: A compound having the structure of Formula I is disclosed, where Ga has the structure and Gb has the structure In the structure of Formula I, Z is selected from Si and Ge; Xa and Xb are independently selected from the group consisting of O, S, and Se; the Y and Z atoms forming the six-membered rings in Formula I, Ga, and Gb are each independently selected from C or N; each R1, R2, Ra1, Ra2, Rb1, and Rb2 is independently selected from a variety of substituents; at least one Ra1 is La-Aa; at least one Rb1 is Lb-Ab; Aa and Ab are each independently selected from carbazole, dibenzofuran, dibenzothiophene, dibenzoselenophene, triphenylene, and nitrogen-substituted variants thereof, which are optionally further substituted; and La and Lb are each independently an organic linker. Formulations and devices, such as an OLEDs, that include the compound of Formula I are also described.
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: October 3, 2017
    Assignee: UNIVERSAL DISPLAY CORPORATION
    Inventors: Raymond Kwong, Kit Yee Tsang, Siu Tung Lam
  • Publication number: 20170098790
    Abstract: Ir phenyl parazole complexes substituted with strong electron withdrawing group such as cyano group resulted in enhancing the metal to ligand charge transfer (MLCT) which in turn resulted in enhanced emission efficiency and red shifted emission.
    Type: Application
    Filed: October 5, 2016
    Publication date: April 6, 2017
    Applicant: Universal Display Corporation
    Inventors: Raymond KWONG, Kit Yee TSANG, Siu Tung LAM, Chi Hang LEE, Sze Kui LAM
  • Publication number: 20170018721
    Abstract: A compound having a structure of Formula I: is provided. In the structure of Formula I, each one of X1 to X16 is independently CRX or N; each RX and R are independently selected from the group consisting of hydrogen, deuterium, halogen, alkyl, cycloalkyl, heteroalkyl, arylalkyl, alkoxy, aryloxy, amino, silyl, alkenyl, cycloalkenyl, heteroalkenyl, alkynyl, aryl, heteroaryl, acyl, carbonyl, carboxylic acids, ester, nitrile, isonitrile, sulfanyl, sulfinyl, sulfonyl, phosphino, carbazole, azacarbazole, dibenzofuran, dibenzothiophene, dibenzoselenophene, azadibenzofuran, azadibenzothiophene, azadibenzoselenophene, triphenylene, azatriphenylene, and combinations thereof; and any adjacent RX can join to form fused or unfused rings. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.
    Type: Application
    Filed: July 12, 2016
    Publication date: January 19, 2017
    Applicant: Universal Display Corporation
    Inventors: Kit Yee TSANG, Chi Hang LEE, Raymond KWONG
  • Publication number: 20160351812
    Abstract: A compound containing a partial structure of Formula I: is provided. In the structure of Formula I, M is a metal with an atomic number of at least 40; RA, RB, and RC are each independently 5 or 6 membered aryl or heteroaryl rings; R1, R2, R3, and A are each independently selected from a variety of substituents and combinations thereof; A is optionally bonded to RA or RC to form a fused ring; X1 is B, C, N, O, S or Se; X2-X7 are independently B, C or N; and Y1-Y2 are independently C or N. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.
    Type: Application
    Filed: May 5, 2016
    Publication date: December 1, 2016
    Applicant: Universal Display Corporation
    Inventors: Siu Tung LAM, Raymond KWONG, Chi Hang LEE, Kit Yee TSANG
  • Publication number: 20160351811
    Abstract: A compound having a structure of Formula I: is described. In the structure of Formula I, RA, RB, and RC are each independently 5 or 6 membered aryl or heteroaryl rings; R1, R2, R3, and A are selected from a variety of substituents, including being joined or fused to form a ring; A is optionally bonded to at least one benzo or azabenzo ring to form fused rings; X1 is B, C, N, O, S or Se; and X2-X7 are independently B, C or N. Formulations and devices, such as an OLEDs, that include the compound containing a structure of Formula I are also described.
    Type: Application
    Filed: May 5, 2016
    Publication date: December 1, 2016
    Applicant: Universal Display Corporation
    Inventors: Siu Tung LAM, Raymond KWONG, Chi Hang LEE, Kit Yee TSANG
  • Publication number: 20160276604
    Abstract: A compound having the structure of Formula I is disclosed, where Ga has the structure and Gb has the structure In the structure of Formula I, Z is selected from Si and Ge; Xa and Xb are independently selected from the group consisting of O, S, and Se; the Y and Z atoms forming the six-membered rings in Formula I, Ga, and Gb are each independently selected from C or N; each R1, R2, Ra1, Ra2, Rb1, and Rb2 is independently selected from a variety of substituents; at least one Ra1 is La-Aa; at least one Rb1 is Lb-Ab; Aa and Ab are each independently selected from carbazole, dibenzofuran, dibenzothiophene, dibenzoselenophene, triphenylene, and nitrogen-substituted variants thereof, which are optionally further substituted; and La and Lb are each independently an organic linker. Formulations and devices, such as an OLEDs, that include the compound of Formula I are also described.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 22, 2016
    Applicant: Universal Display Corporation
    Inventors: Raymond KWONG, Kit Yee TSANG, Siu Tung LAM
  • Publication number: 20160233423
    Abstract: Compounds having a structure according to Formula I, G1-L1-G2, or Formula V, are described. In Formula I, G1 and G2 independently have a structure of Formula II, In the structures of Formula I, II, and V, L1 connects one of rings A1-A4 of G1 to one of rings A1-A4 of G2; L1 is selected from a direct bond, BR, NR, PR, O, S, Se, C?O, S?O, SO2, SiRR?, GeRR?, alkyl, cycloalkyl, aryl, heteroaryl, and combinations thereof; each ring A1, A2, A3, and A4, as well as R, R?R?, and R1 to R19 can be hydrogen or a variety of substituents, including a fused ring between adjacent substituents; and at least two adjacent R1 to R16 on the same ring are Formulations and devices, such as an OLEDs, that include the compound of Formula I or V are also described.
    Type: Application
    Filed: November 5, 2015
    Publication date: August 11, 2016
    Applicant: Universal Display Corporation
    Inventors: Raymond KWONG, Kit Yee TSANG
  • Publication number: 20160233424
    Abstract: A compound including a ligand L1 of Formula I, is described. In Formula I: rings A and B each independently represent a 5-membered or 6-membered carbocyclic or heterocyclic ring; X, Y, Z, and W are either carbon or nitrogen; R1 to R6 are selected from a variety of substituents, where adjacent substituents can be joined to form a fused ring; ligand L1 is coordinated to a metal M by X-M and Y-M bonds; and ligand L1 is optionally linked with other ligands to produce a tridentate, tetradentate, pentadentate or hexadentate ligand. Formulations and devices, such as an OLEDs, that include the compound that include a ligand L1 of Formula I are also described.
    Type: Application
    Filed: October 29, 2015
    Publication date: August 11, 2016
    Applicant: Universal Display Corporation
    Inventors: Raymond KWONG, Chi Hang Lee, Siu Tung Lam, Kit Yee Tsang, Geza Szigethy
  • Publication number: 20160218303
    Abstract: A family of phosphorescent emitter compounds containing a carbene ligand LA selected from the group consisting of: is disclosed. These compounds enhance the performance of OLEDs when incorporated therein.
    Type: Application
    Filed: December 29, 2015
    Publication date: July 28, 2016
    Applicant: Universal Display Corporation
    Inventors: Raymond KWONG, Sze Kui LAM, Siu Tung LAM, Kit Yee TSANG, Chi Hang LEE, Geza SZIGETHY
  • Patent number: 9293712
    Abstract: Compounds according to Formula 1, devices containing the same and formulations containing the same are described. Formula 1 has the following structure: where at least two of R1—R10 are not H, where at least one of R1—R10 has the formula T1 where L is an organic linker, where Y1 to Y4 are CR or N, where adjacent R moieties can form fused rings, where Rs and Rt are independently aryl or heteroaryl, either of which may independently be further substituted, and where Rs and Rt do not form fused rings with any part of the molecule.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: March 22, 2016
    Assignee: Universal Display Corporation
    Inventors: Raymond Kwong, Kit Yee Tsang, Sze Kui Lam