Patents by Inventor Chi Yuen
Chi Yuen 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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Publication number: 20240074221Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device includes an anode, a cathode, and a hole transporting region disposed between the anode and the cathode; the hole transporting region includes a first organic layer; the first organic layer contains a first p-type dopant and a second p-type dopant; the first p-type dopant is different from the second p-type dopant. The electroluminescent device containing at least two different p-type dopants in the first organic layer in the hole transporting region can maintain a high external quantum efficiency and achieve the great reduction in voltages and the significant improvement in lifetimes, thereby improving the comprehensive performance of the device. Further provided is an electronic assembly containing the organic electroluminescent device.Type: ApplicationFiled: August 11, 2023Publication date: February 29, 2024Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Menglan Xie, Huiqing Pang, Chi Yuen Raymond Kwong, Jing Wang
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Publication number: 20240065100Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device includes an anode, a cathode and an organic layer disposed between the anode and the cathode, where the organic layer comprises at least a first compound, a second compound and a third compound. The first compound and the second compound can be used as host materials, and the third compound can be used as a light-emitting material. A particular combination of the first compound, the second compound and the third compound can significantly improve device efficiency, significantly improve a device lifetime and obtain more excellent device performance, which has an unexpected unique advantage. Further provided are an electronic apparatus comprising the electroluminescent device and a composition.Type: ApplicationFiled: July 28, 2023Publication date: February 22, 2024Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Qiang Wang, Le Wang, Ziyan Zhang, Chi Yuen Raymond Kwong, Chuanjun Xia
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Patent number: 11897896Abstract: Organic electroluminescent materials and devices are disclosed. The organic electroluminescent materials are novel benzodithiophene or its analogous structure compounds, which can be used as charge transporting materials, hole injection materials, or the like in an electroluminescent device. These novel compounds can offer excellent performance compared with existing materials, for example, to further improve the voltage, efficiency and/or lifetime of the OLEDs.Type: GrantFiled: August 25, 2022Date of Patent: February 13, 2024Inventors: Zhihao Cui, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20240034746Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a metal complex having a general formula of M(La)m(Lb)n(Lc)q. The metal complex can meet luminescence requirements on different wavebands, unexpectedly have a greatly narrowed full width at half maximum, and can achieve high-saturation luminescence. Moreover, when used as a emissive material in an electroluminescent device, the metal complex can effectively control the luminescence wavelength of the device, can make the device have the advantages of a low voltage, high efficiency, and an ultra-long lifetime, and can provide better device performance. Further provided are an electroluminescent device and a compound composition.Type: ApplicationFiled: June 29, 2023Publication date: February 1, 2024Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Han Zhang, Cuifang Zhang, Zhihong Dai, Qi Zhang, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20240032417Abstract: Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a compound having a structure of Formula 1. These new compounds can be applied in organic electroluminescent devices, for example, as host materials, transport materials (e.g., electron transport materials), etc., in organic electroluminescent devices, and can provide better device performance and especially improve the device lifetime. Further provided are an organic electroluminescent device including the compound and a compound composition including the compound.Type: ApplicationFiled: April 19, 2023Publication date: January 25, 2024Inventors: Feng LI, Yang WANG, Jianfei YAO, Gang YANG, Chi Yuen Raymond KWONG, Chuanjun XIA
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Publication number: 20240016057Abstract: Provided are an organic electroluminescent material and a device thereof. The organic electroluminescent material is a compound having a structure of Formula 1. The compound may be used as a host material, an electron transporting material, or a hole blocking material in an organic electroluminescent device and can provide better device performance such as a lower voltage and higher efficiency and can especially improve a device lifetime greatly. Further provided is a compound composition comprising the structure of Formula 1.Type: ApplicationFiled: June 28, 2023Publication date: January 11, 2024Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Feng Li, Yang Wang, Jianfei Yao, Ziyan Zhang, Qiang Wang, Le Wang, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20240008356Abstract: Provided are an organic electroluminescent material and a device comprising the same. The organic electroluminescent material is a metal complex comprising a metal M and a ligand La having a structure of Formula 1, and the metal complex can be applied to an electroluminescent device as a light-emitting material. The metal complex is applied to the electroluminescent device so that the metal complex, while maintaining a very narrow full width at half maximum, can effectively adjust a light emission wavelength to better meet a requirement of saturated red light emission and can obtain higher device efficiency at a lower voltage, thereby providing better device performance. Further provided are an electroluminescent device comprising the metal complex and a compound composition comprising the metal complex.Type: ApplicationFiled: June 29, 2023Publication date: January 4, 2024Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Nannan Lu, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20240008300Abstract: Provided is a top-emission organic electroluminescent device, comprising an anode, a cathode and an emissive layer disposed between the two electrodes; the emissive doped material of the emissive layer has a ?max, the device has a maximum external quantum efficiency conversion rate E=EQEA/EQEB, and satisfies when 500 nm??max?600 nm, E?1.625; when 600 nm<?max?700 nm, E?1.850, and the bottom-emission device has an exciton recombination region whose peak position is located in the emissive layer in a region >0% and ?65% of thickness thereof from the side close to the anode. The top-emission device exhibits more excellent device performance. Further provided are a display assembly comprising the top-emission device and use of the top-emission device in an electronic device, an electronic element module, a display device or a lighting device.Type: ApplicationFiled: June 28, 2023Publication date: January 4, 2024Inventors: Jing WANG, Menglan XIE, Huiqing PANG, Chi Yuen Raymond KWONG, Chuanjun XIA
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Publication number: 20230422609Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises an anode, a cathode, and an organic layer disposed between the anode and the cathode, wherein the organic layer comprises a first organic layer and a second organic layer; the first organic layer comprises a first organic material and a first p-type dopant; the second organic layer comprises a second organic material and a second p-type dopant; the first organic layer is in contact with the second organic layer, and the second organic layer is above the first organic layer; and the p-type dopant has a structure represented by Formula 1. The organic electroluminescent device comprising the p-type dopant of a particular structure and having a particular device structure can significantly improve the overall performance of the device and especially improve the lifetime of the device. Further provided is an electronic assembly comprising the organic electroluminescent device.Type: ApplicationFiled: June 27, 2023Publication date: December 28, 2023Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Menglan Xie, Jing Wang, Huiqing Pang, Liang Gao, Zhihao Cui, Hualong Ding, Renjie Zheng, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20230422538Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device includes an anode, a cathode, and an organic layer disposed between the anode and cathode; the organic layer includes a first organic layer and a second organic layer; the first organic layer includes a first p-type dopant; the second organic layer includes a second p-type dopant; the first p-type dopant is different from the second dopant; the first organic layer is in contact with the second organic layer, and the second organic layer is above the first organic layer. The organic electroluminescent device including specific p-type dopants and having a specific device structure can significantly improve the overall performance of the device, especially the device lifetime or the device efficiency. Further provided is an electronic assembly including the organic electroluminescent device.Type: ApplicationFiled: June 27, 2023Publication date: December 28, 2023Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Menglan Xie, Jing Wang, Huiqing Pang, Liang Gao, Zhihao Cui, Hualong Ding, Renjie Zheng, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20230397483Abstract: An organic light-emitting material containing cyano-substituted ligand is disclosed. The organic light-emitting material is a metal complex containing a cyano-substituted ligand, which can be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These new complexes can provide better device performance, e.g., narrower full width at half maximum, lower voltage values, and higher quantum efficiency, and the like. An electroluminescent device and a compound formulation containing the metal complex, and a compound capable of being used to prepare the metal complex are also disclosed.Type: ApplicationFiled: August 22, 2023Publication date: December 7, 2023Inventors: Wei Cai, Ming Sang, Chi Yuen Raymond Kwong, Chuanjun Xia, Zhen Wang, Tao Wang, Hongbo Li
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Patent number: 11785839Abstract: An organic light-emitting material containing cyano-substituted ligand is disclosed. The organic light-emitting material is a metal complex containing a cyano-substituted ligand, which can be used as a light-emitting material in a light-emitting layer of an organic electroluminescent device. These new complexes can provide better device performance, e.g., narrower full width at half maximum, lower voltage values, and higher quantum efficiency, and the like. An electroluminescent device and a compound formulation containing the metal complex, and a compound capable of being used to prepare the metal complex are also disclosed.Type: GrantFiled: January 23, 2020Date of Patent: October 10, 2023Assignee: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Wei Cai, Ming Sang, Chi Yuen Raymond Kwong, Chuanjun Xia, Zhen Wang, Tao Wang, Hongbo Li
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Publication number: 20230312627Abstract: Provided are an organic electroluminescent material and device. The organic electroluminescent material is a series of metal complexes each comprising a ligand La having a structure of Formula 1, wherein the ligand La has an aza six-membered ring-(6-5-6)-fused ring skeleton structure, and has a fluorine substitution at a particular position of the aza six-membered ring, and has a particular Ar substitution and a fluorine or cyano substitution in the (6-5-6)-fused ring structure. The metal complexes may be used as light-emitting materials in electroluminescent devices. These novel compounds may be applied to electroluminescent devices and can improve the luminescence performance, driving voltages and efficiency (CE, PE and EQE) of the devices, exhibit more saturated luminescence and significantly improve the overall performance of the devices. Further provided are an organic electroluminescent device comprising the metal complex and a compound combination comprising the metal complex.Type: ApplicationFiled: March 27, 2023Publication date: October 5, 2023Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Ming Sang, Bin Tang, Hongbo Li, Wei Cai, Zhen Wang, Zheng Wang, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20230320121Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises at least a first organic layer and a second organic layer, wherein the first organic layer has a relatively high electrical conductivity and comprises a first compound with deep LUMO and a second compound with deep HOMO and the second organic layer comprises a third compound having a high hole mobility. The compound combination can reduce an effect of an interface and provide better device performance, such as a reduced voltage and improved device efficiency. Further provided are a display apparatus comprising the organic electroluminescent device and an electronic equipment comprising the display apparatus.Type: ApplicationFiled: March 28, 2023Publication date: October 5, 2023Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Zhihao Cui, Renjie Zheng, Juntao Hu, Liang Gao, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20230309394Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device includes an anode, a cathode and a light-emitting layer disposed between the anode and the cathode, where the light-emitting layer at least comprises a first compound having a structure of Formula 1, Formula 2 or Formula 3, a second compound having a structure of Formula 4 and a third compound comprising a ligand having a structure of Formula 5. The new electroluminescent device has higher device efficiency, a longer device lifetime and better device performance. Further provided are an electronic apparatus and a composition.Type: ApplicationFiled: March 24, 2023Publication date: September 28, 2023Inventors: Chi Yuen Raymond KWONG, Feng LI, Le WANG, Menglan XIE, Qiang WANG, Jianfei YAO, Yang WANG, Gang YANG, Ziyan ZHANG, Meiying WANG, Qi ZHANG, Cuifang ZHANG, Nannan LU, Zhihong DAI
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Publication number: 20230309388Abstract: Provided are an organic electroluminescent material and device. The organic electroluminescent material is a novel compound having an ortho-substituted dehydrogenated fused-ring structure represented by Formula 1. The compound may be used as a charge transporting material, a charge injection material, and a similar material in an organic electroluminescent device. These novel compounds have an unexpected high sublimation yield due to a structural design. Additionally, these novel compounds can provide excellent performance for organic electroluminescent devices, such as low voltage and high efficiency. Further provided are an electroluminescent device and a compound composition.Type: ApplicationFiled: November 23, 2022Publication date: September 28, 2023Inventors: Zhihao CUI, Renjie ZHENG, Hualong DING, Juntao HU, Chi Yuen Raymond KWONG, Chuanjun XIA
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Publication number: 20230309375Abstract: Provided are an organic electroluminescent material and device thereof. The organic electroluminescent material is a metal complex comprising a ligand La having a structure of Formula 1. These novel metal complexes are applied in organic electroluminescent devices, and are capable of providing better device performance such as improved device efficiency and an improved device lifetime, especially a greatly improved device lifetime, and can significantly improve the overall device performance. Further provided are an organic electroluminescent device comprising the metal complex and a compound composition comprising the metal complex.Type: ApplicationFiled: March 21, 2023Publication date: September 28, 2023Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Wei Cai, Zheng Wang, Hongbo Li, Ming Sang, Zhen Wang, Chi Yuen Raymond Kwong, Chuanjun Xia
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Publication number: 20230301189Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises a first compound having a structure of Formula H-L-Ar and a second compound having a structure of Formula 2. The compounds may be used as host materials in the organic electroluminescent device, and this new compound combination can provide better device performance, such as higher efficiency, a longer lifetime and a low voltage. Further provided are an electronic device comprising the organic electroluminescent device and a compound combination comprising the first compound and the second compound.Type: ApplicationFiled: January 19, 2023Publication date: September 21, 2023Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Qiang Wang, Le Wang, Ziyan Zhang, Meiying Wang, Chi Yuen Raymond Kwong, Chuanjun Xia
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Patent number: 11737297Abstract: Provided is an organic electroluminescent device. The organic electroluminescent device comprises a first electrode, a second electrode, and at least two light emitting units disposed between the first electrode and the second electrode, wherein the light emitting units each comprises at least one light emitting layer, and a connection layer of a specific structure is further disposed between adjacent two light emitting units. By using a connection layer of a specific structure, the organic light-emitting device reduces the device voltage, prolongs life time of the device, and improves the device performance.Type: GrantFiled: October 15, 2020Date of Patent: August 22, 2023Assignee: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Liang Gao, Huiqing Pang, Menglan Xie, Chuanjun Xia, Chi Yuen Raymond Kwong
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Publication number: 20230250118Abstract: Provided are an electroluminescent material and a device thereof. The electroluminescent material is a metal complex having a ligand represented by Formula 1 and can be used as light-emitting materials in electroluminescent devices. These new metal complexes can effectively regulate and control the luminescence wavelength, reduce the drive voltage of electroluminescent devices, greatly improve the current efficiency, power efficiency and EQE of electroluminescent devices, prolong the device lifetime, and provide better device performance. Further provided are an electroluminescent device and a compound composition.Type: ApplicationFiled: October 31, 2022Publication date: August 10, 2023Applicant: BEIJING SUMMER SPROUT TECHNOLOGY CO., LTD.Inventors: Zhihong Dai, Zhen Wang, Chuanjun Xia, Chi Yuen Raymond Kwong