Patents by Inventor Hwan-Hee Cho
Hwan-Hee Cho 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: 11937502Abstract: A condensed cyclic compound and an organic light-emitting device including the condensed cyclic compound are provided. The condensed cyclic compound is represented by Formula 1. The A3 ring of Formula 1 is a group represented by Formula 2A or a group represented by Formula 2B. The organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode and including an emission layer, the organic layer including at least one of the condensed cyclic compound represented by Formula 1.Type: GrantFiled: April 13, 2016Date of Patent: March 19, 2024Assignees: Samsung Display Co., Ltd., Research & Business Foundation Sungkyunkwan UniversityInventors: Sung-Wook Kim, Myeong-Suk Kim, Hwan-Hee Cho, Sam-Il Kho, Seung-Soo Yoon, Changwoong Chu
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Patent number: 11910707Abstract: According to one or more embodiments, an organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer.Type: GrantFiled: December 23, 2016Date of Patent: February 20, 2024Assignee: Samsung Display Co., Ltd.Inventors: Myeong-Suk Kim, Sung-Wook Kim, Hwan-Hee Cho, Jin-Soo Hwang, Chang-Woong Chu
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Patent number: 11871661Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a first compound represented by Formula 1 and a second compound represented by Formula 501. The organic light-emitting device including the first compound and the second compound may have low driving voltage, high efficiency, and high luminance.Type: GrantFiled: December 13, 2016Date of Patent: January 9, 2024Assignee: Samsung Display Co., Ltd.Inventors: Sung-Wook Kim, Myeong-Suk Kim, Hwan-Hee Cho, Jin-Soo Hwang
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Patent number: 11696499Abstract: An organic light emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a first compound, a second compound, a third compound, and a fourth compound, and the first compound to the fourth compound satisfy Equations 1 to 8: E1,LUMO?E2,LUMO+0.15 electron volts (eV)??Equation 1 E1,HOMO?E2,HOMO+0.15 eV??Equation 2 E1,T1?E4,T1??Equation 3 E2,T1?E4,T1??Equation 4 E3,T1?E4,T1??Equation 5 E3,LUMO?E2,LUMO+0.1 eV??Equation 6 ?5.6 eV?E3,HOMO??Equation 7 Egap1?Egap3.Type: GrantFiled: May 4, 2020Date of Patent: July 4, 2023Assignee: Samsung Display Co., Ltd.Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim, Se-Hun Kim, Jin-Soo Hwang
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Patent number: 11678575Abstract: An organic light emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a first compound, a second compound, a third compound, and a fourth compound, and the first compound to the fourth compound satisfy Equations 1 to 8: E1,LUMO?E2,LUMO+0.15 electron volts (eV)??Equation 1 E1,HOMO?E2,HOMO+0.15 eV??Equation 2 E1,T1?E4,T1??Equation 3 E2,T1?E4,T1??Equation 4 E3,T1?E4,T1??Equation 5 E3,LUMO?E2,LUMO+0.1 eV??Equation 6 ?5.6 eV?E3,HOMO??Equation 7 Egap1?Egap3.Type: GrantFiled: October 13, 2016Date of Patent: June 13, 2023Assignee: Samsung Display Co., Ltd.Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim, Se-Hun Kim, Jin-Soo Hwang
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Patent number: 11678498Abstract: An organic light-emitting device including a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode, the emission layer including a first compound and a second compound; a hole transport region between the first electrode and the emission layer; and an electron transport region, the electron transport region including a buffer layer between the emission layer and the second electrode, the buffer layer including a third compound, and an electron transport layer between the buffer layer and the second electrode, the electron transport layer including a fourth compound, wherein, in the emission layer, the first compound is a phosphorescent host and the second compound is a phosphorescent dopant, wherein the first compound and the third compound are different from each other, wherein the first compound and the third compound each independently include both an electron transport group and a hole transport group.Type: GrantFiled: March 15, 2017Date of Patent: June 13, 2023Assignee: Samsung Display Co., Ltd.Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim, Chang-Woong Chu
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Patent number: 11653563Abstract: An organic light-emitting device including a first compound represented by Formula 1 and a second compound represented by one of Formulae 2A and 2B.Type: GrantFiled: December 9, 2016Date of Patent: May 16, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Myeong-Suk Kim, Hee-Yeon Kim, Hwan-Hee Cho, Seung-Gak Yang
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Patent number: 11611044Abstract: An organic light-emitting device including a first compound represented by Formula 1 and a second compound represented by one of Formulae 2A and 2B.Type: GrantFiled: December 9, 2016Date of Patent: March 21, 2023Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Myeong-Suk Kim, Hee-Yeon Kim, Hwan-Hee Cho, Seung-Gak Yang
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Patent number: 11557744Abstract: An organic light-emitting device includes a first electrode, a second electrode facing the first electrode, an emission layer between the first electrode and the second electrode, and a hole transport region between the first electrode and the emission layer.Type: GrantFiled: February 13, 2018Date of Patent: January 17, 2023Assignee: Samsung Display Co., Ltd.Inventors: Hye-In Jeong, Seul-Ong Kim, Dong-Hyun Kim, Sung-Wook Kim, Tsuyoshi Naijo, Sung-Soo Bae, Hwan-Hee Cho
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Publication number: 20220393114Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer. The organic layer includes a first compound represented by Formula 1 and a second compound represented by Formula 2. The first compound may be included in an emission layer, and the second compound may be included in an electron transport region.Type: ApplicationFiled: July 7, 2022Publication date: December 8, 2022Inventors: Sung-Soo Bae, Seul-Ong Kim, Dong-Hyun Kim, Sung-Wook Kim, Tsuyoshi Naijo, Hye-In Jeong, Hwan-Hee Cho
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Patent number: 11411187Abstract: An organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer. The organic layer includes a first compound represented by Formula 1 and a second compound represented by Formula 2. The first compound may be included in an emission layer, and the second compound may be included in an electron transport region.Type: GrantFiled: January 12, 2018Date of Patent: August 9, 2022Assignee: Samsung Display Co., Ltd.Inventors: Sung-Soo Bae, Seul-Ong Kim, Dong-Hyun Kim, Sung-Wook Kim, Tsuyoshi Naijo, Hye-In Jeong, Hwan-Hee Cho
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Patent number: 11329231Abstract: According to one or more embodiments, an organic light-emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer may include a first compound represented by one selected from Formulae 1-1 and 1-2, and a second compound represented by Formula 2:Type: GrantFiled: October 18, 2019Date of Patent: May 10, 2022Assignee: Samsung Display Co., Ltd.Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Hee-Yeon Kim, Chang-Woong Chu
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Patent number: 11322705Abstract: An organic light-emitting device including: a first electrode; a second electrode facing the first electrode; an emission layer between the first electrode and the second electrode; and an electron transport region between the second electrode and the emission layer, wherein the emission layer includes a first host and a second host, the first host includes a first compound represented by Formula 1, the second host includes at least one selected from a second compound represented by Formula 2 and a third compound represented by Formula 3, and the hole transport region includes an amine-based compound represented by Formula 40:Type: GrantFiled: April 15, 2016Date of Patent: May 3, 2022Assignee: Samsung Display Co., Ltd.Inventors: Myeong-Suk Kim, Sung-Wook Kim, Hwan-Hee Cho, Chang-Woong Chu
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Patent number: 11217758Abstract: An organic light-emitting device including a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a first material represented by Formula 1, and a second material represented by Formula 2,Type: GrantFiled: June 17, 2020Date of Patent: January 4, 2022Assignee: Samsung Display Co., Ltd.Inventors: Jae-Yong Lee, Hwan-Hee Cho, Myeong-Suk Kim
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Patent number: 11114625Abstract: An organic light-emitting device includes a first electrode; a second electrode; an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, and an electron transport region between the emission layer and the second electrode. The emission layer includes a first compound represented by Formula 1 and a second compound represented by any one of Formulae 2-1 to 2-5. The electron transport region includes a third compound represented by Formula 7. The organic light-emitting device may have low driving voltage, high efficiency, and a long lifespan.Type: GrantFiled: July 23, 2015Date of Patent: September 7, 2021Assignee: Samsung Display Co., Ltd.Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim
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Patent number: 11056664Abstract: An organic light-emitting device includes a first electrode and a second electrode facing the first electrode. An organic layer is disposed between the first electrode and the second electrode. The organic layer includes an emission layer, a first compound and a second compound.Type: GrantFiled: June 21, 2017Date of Patent: July 6, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Se-Hun Kim, Hwan-Hee Cho, Jin-Soo Hwang
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Patent number: 11018305Abstract: An organic light emitting device includes: a first electrode; a second electrode facing the first electrode; and an organic layer between the first electrode and the second electrode, the organic layer including an emission layer, wherein the organic layer includes a first compound, a second compound, a third compound, and a fourth compound, and the first compound to the fourth compound satisfy Equations 1 to 8: E1,LUMO?E2,LUMO+0.15 electron volts (eV)??Equation 1 E1,HOMO?E2,HOMO+0.15 eV??Equation 2 E1,T1?E4,T1??Equation 3 E2,T1?E4,T1??Equation 4 E3,T1?E4,T1??Equation 5 E3,LUMO?E2,LUMO+0.1 eV??Equation 6 ?5.6 eV?E3,HOMO??Equation 7 Egap1?Egap3.Type: GrantFiled: October 13, 2016Date of Patent: May 25, 2021Assignee: Samsung Display Co., Ltd.Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim, Se-Hun Kim, Jin-Soo Hwang
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Patent number: 10985340Abstract: An organic light emitting diode display including a first substrate; a first electrode on the first substrate; an organic light emitting layer on the first electrode; a second electrode on the organic light emitting layer; and a capping layer on the second electrode, wherein the capping layer includes at least one heterocyclic compound, the heterocyclic compound including a carbazole group and a heterocyclic group bonded with the carbazole group.Type: GrantFiled: October 25, 2018Date of Patent: April 20, 2021Assignee: Samsung Display Co., Ltd.Inventors: Hwan-Hee Cho, Myeong-Suk Kim, Sung-Wook Kim
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Publication number: 20210074924Abstract: An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode. The organic layer includes an emission layer, and the emission layer includes at least one light-emitting material represented by one of Formulas 1 and 2. The organic layer further includes at least one hole-transporting material represented by one of Formulas 2(1) and 2(2).Type: ApplicationFiled: November 16, 2020Publication date: March 11, 2021Inventors: Hwan-Hee CHO, Mi-Kyung KIM, Se-Hun KIM, Dong-Hyun KIM, Chang-Woong CHU
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Patent number: 10840454Abstract: An organic light-emitting device includes: a first electrode; a second electrode; and an organic layer between the first electrode and the second electrode. The organic layer includes an emission layer, and the emission layer includes at least one light-emitting material represented by one of Formulas 1 and 2. The organic layer further includes at least one hole-transporting material represented by one of Formulas 2(1) and 2(2).Type: GrantFiled: April 20, 2015Date of Patent: November 17, 2020Assignee: Samsung Display Co., Ltd.Inventors: Hwan-Hee Cho, Mi-Kyung Kim, Se-Hun Kim, Dong-Hyun Kim, Chang-Woong Chu