Patents by Inventor Chi-Hang Lee
Chi-Hang Lee 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: 10991895Abstract: 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: GrantFiled: October 5, 2016Date of Patent: April 27, 2021Assignee: UNIVERSAL DISPLAY CORPORATIONInventors: Raymond Kwong, Kit Yee Tsang, Siu Tung Lam, Chi Hang Lee, Sze Kui Lam
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Patent number: 10608185Abstract: The present invention includes fused tetraphenylene compounds that may be used as charge transporters, hosts or emitters in OLEDs.Type: GrantFiled: April 10, 2017Date of Patent: March 31, 2020Assignee: UNIVERAL DISPLAY CORPORATIONInventors: Chi Hang Lee, Raymond Kwong
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Patent number: 10566546Abstract: A compound having a structure of Formula 1: is disclosed. In Formula 1, each one of X1 to X16 is independently CR or N; at least two adjacent of X1 to X16 are CR; at least one pair of adjacent Rs is fused to one of the Ring A, Ring B, Ring C, or Ring D; each instance of Y1, Y2, Y3, and Y4 is independently CR1 or N; each instance of Z is independently CR2R3, NR4, O, S or Se; each instance of R, R1, R2, R3, and R4 are independently selected from a variety of substituents; and any adjacent substituents of R, R1, R2, R3, and R4 are optionally joined or fused into a ring. Formulations and devices, such as an OLEDs, that include the compound of Formula 1 are also described.Type: GrantFiled: July 6, 2015Date of Patent: February 18, 2020Assignee: UNIVERSAL DISPLAY CORPORATIONInventors: Raymond Kwong, Sze Kui Lam, Chi Hang Lee
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Patent number: 10468609Abstract: New organic materials having polyaromatic structure containing boron and high triplet energy are disclosed. The high triplet energy materials are useful as host materials in PHOLEDs and improve device quantum efficiency and stability.Type: GrantFiled: May 1, 2017Date of Patent: November 5, 2019Assignee: Universal Display CorporationInventors: Chi Hang Lee, Siu Tung Lam, Raymond Kwong
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Patent number: 10418568Abstract: 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: GrantFiled: May 5, 2016Date of Patent: September 17, 2019Assignee: Universal Display CorporationInventors: Siu Tung Lam, Raymond Kwong, Chi Hang Lee, Kit Yee Tsang
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Patent number: 10418569Abstract: 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: GrantFiled: December 29, 2015Date of Patent: September 17, 2019Assignee: Universal Display CorporationInventors: Raymond Kwong, Sze Kui Lam, Siu Tung Lam, Kit Yee Tsang, Chi Hang Lee, Geza Szigethy
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Patent number: 10236458Abstract: The present invention includes high triplet hosts with a macrocyclic structure that may provide high device quantum efficiency in OLEDs.Type: GrantFiled: April 5, 2017Date of Patent: March 19, 2019Assignee: Universal Display CorporationInventors: Raymond Kwong, Siu Tung Lam, Chi Hang Lee
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Patent number: 10033004Abstract: 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: GrantFiled: May 5, 2016Date of Patent: July 24, 2018Assignee: UNIVERSAL DISPLAY CORPORATIONInventors: Siu Tung Lam, Raymond Kwong, Chi Hang Lee, Kit Yee Tsang
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Patent number: 9978956Abstract: 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: GrantFiled: July 12, 2016Date of Patent: May 22, 2018Assignee: UNIVERSAL DISPLAY CORPORATIONInventors: Kit Yee Tsang, Chi Hang Lee, Raymond Kwong
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Publication number: 20180114929Abstract: The present invention includes high triplet hosts with a macrocyclic structure that may provide high device quantum efficiency in OLEDs.Type: ApplicationFiled: April 5, 2017Publication date: April 26, 2018Inventors: Raymond Kwong, Siu Tung Lam, Chi Hang Lee
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Publication number: 20180108844Abstract: The present invention includes fused tetraphenylene compounds that may be used as charge transporters, hosts or emitters in OLEDs.Type: ApplicationFiled: April 10, 2017Publication date: April 19, 2018Inventors: Chi Hang Lee, Raymond Kwong
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Patent number: 9882151Abstract: 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: GrantFiled: October 29, 2015Date of Patent: January 30, 2018Assignee: UNIVERSAL DISPLAY CORPORATIONInventors: Raymond Kwong, Chi Hang Lee, Siu Tung Lam, Kit Yee Tsang, Geza Szigethy
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Publication number: 20170352809Abstract: New organic materials having polyaromatic structure containing boron and high triplet energy are disclosed. The high triplet energy materials are useful as host materials in PHOLEDs and improve device quantum efficiency and stability.Type: ApplicationFiled: May 1, 2017Publication date: December 7, 2017Applicant: Universal Display CorporationInventors: Chi Hang LEE, Siu Tung LAM, Raymond KWONG
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Patent number: 9741941Abstract: A compound that has the structure according to Formula 1: as well as, devices and formulations containing the compound of Formula 1 are disclosed. In the compound of Formula 1: X1, X2, X3, X4, X5, and X6 are independently selected from the group consisting of C—R and N; each R is independently selected from the group consisting of hydrogen, deuterium, halide, 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, and combinations thereof; and at least one R comprises a donor group with at least two electron donating nitrogens.Type: GrantFiled: April 29, 2014Date of Patent: August 22, 2017Assignee: UNIVERSAL DISPLAY CORPORATIONInventors: Tzu-Chin Yeh, Ken-Tsung Wong, Raymond Kwong, Siu Tung Lam, Chi Hang Lee
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Patent number: 9647218Abstract: A compound having the structure of Formula 1, as well as, a first device and a formulation including the same are disclosed. In the structure of Formula 1: R5 is and (a) at least one of R1-R4 is or (b) R1 is In addition, R1, R2, R3, R4, A1, A2, A3, A4, A5, A6, A7, A8, A9, A10, B1, B2, B3, B4, B5, B6, B7, B8, B9, B10, Y1, Y2, Y3, Y4, Y5, Y6, Y7, Y8, Z1, Z2, Z3, Z4, Z5, Z6, Z7, and Z8, are each independently selected from a variety of substituents, where adjacent A, B, Y, and Z groups are, optionally, joined to form a fused ring structure. Finally, X includes an acceptor group selected from —CmF2m+1, —SimF2m+1, —NCO, —NCS, —OCN, —SCN, —OCmF2m+1, and —SCmF2m+1.Type: GrantFiled: August 20, 2014Date of Patent: May 9, 2017Assignee: UNIVERSAL DISPLAY CORPORATIONInventors: Raymond Kwong, Siu Tung Lam, Chi Hang Lee
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Publication number: 20170098790Abstract: 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: ApplicationFiled: October 5, 2016Publication date: April 6, 2017Applicant: Universal Display CorporationInventors: Raymond KWONG, Kit Yee TSANG, Siu Tung LAM, Chi Hang LEE, Sze Kui LAM
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Publication number: 20170018721Abstract: 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: ApplicationFiled: July 12, 2016Publication date: January 19, 2017Applicant: Universal Display CorporationInventors: Kit Yee TSANG, Chi Hang LEE, Raymond KWONG
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Patent number: 9548459Abstract: Novel diarylamino phenyl carbazole compounds are provided. By appropriately selecting the nature of the diarylamino substituent and the substitution on the carbazole nitrogen, compounds with appropriate HOMO and LUMO energies can be obtained for use as materials in a secondary hole transport layer.Type: GrantFiled: May 6, 2015Date of Patent: January 17, 2017Assignee: Universal Display CorporationInventors: Raymond Kwong, Siu Tung Lam, Chi Hang Lee, Sze Kui Lam
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Patent number: 9537106Abstract: Donor-acceptor compounds with nitrogen containing polyaromatics as the acceptor with emission originated from the charge transfer (CT) state is disclosed. The donor-acceptor compound is provided that has the structure of Formula 1 shown below: wherein X1 to X12 is independently selected from the group consisting of C—R and N, wherein at least one of X1 to X12 is N, wherein each R is independently selected from the group consisting of hydrogen, deuterium, halide, 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, and combinations thereof; and at least one of the R comprises a donor group with at least two electron-donating nitrogens.Type: GrantFiled: May 9, 2013Date of Patent: January 3, 2017Assignee: Universal Display CorporationInventors: Raymond Kwong, Sui Tung Lam, Chi Hang Lee
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Publication number: 20160351812Abstract: 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: ApplicationFiled: May 5, 2016Publication date: December 1, 2016Applicant: Universal Display CorporationInventors: Siu Tung LAM, Raymond KWONG, Chi Hang LEE, Kit Yee TSANG