Patents by Inventor Banumathy Balaganesan
Banumathy Balaganesan 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: 10243147Abstract: An organic light-emitting element is provided, including: an anode; a first hole assisting layer and a second hole assisting layer sequentially formed on the anode; a light-emitting layer formed on and in contact with the second hole assisting layer, the light-emitting layer including a host luminesce containing a compound having a carbazole group; at least one electron transport layer formed on the light-emitting layer; and a cathode formed on the electron transport layer, the second hole assisting layer including a hole transport compound represented by formula (I) to improve the performance of the organic light-emitting element.Type: GrantFiled: June 10, 2016Date of Patent: March 26, 2019Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Heh-Lung Huang, Banumathy Balaganesan, Hsuan-Lung Lu
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Patent number: 10014480Abstract: The present invention discloses a novel heterocyclic compound of Formula (1) and an organic electroluminescent device using the same, in which variables are as described herein. The heterocyclic compound of Formula (1) is present in the emitting layer as a light emitting host in combination with a dopant and another host, in the organic electroluminescent device and high luminous efficiency and low driving voltage are achieved.Type: GrantFiled: November 12, 2014Date of Patent: July 3, 2018Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Heh-Lung Huang, Cheng-Chung Yao, Po-Wei Hsieh, Hui-Hsu Chen
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Patent number: 9812654Abstract: The present invention provides a high triplet energy compound of Formula 1 for an organic electroluminescent device: In Formula 1, X represents an oxygen or a sulfur atom, and represents a substituted or unsubstituted hetero-aromatic ring containing at least two nitrogens or an alkyl group with C2 to C6. The organic electroluminescent device including the compound used in an emissive layer or an electron transporting layer enhances the efficiency and the stability of the device.Type: GrantFiled: June 17, 2015Date of Patent: November 7, 2017Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Heh-Lung Huang, Huang-Ming Guo, Po-Wei Hsu
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Patent number: 9559312Abstract: The present invention mainly provides a new imidazole compound, which can be used to produce electronic devices that are able to operate at low driving voltage and at high current efficiency. The new imidazole compound of the present invention is represented by the following formula (1): (In the formula (1), R1 and R2 are respectively the same as described in the specification).Type: GrantFiled: January 7, 2016Date of Patent: January 31, 2017Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Taizo Hatta, Rempei Kuwahara, Yoshiyuki Hirao, Banumathy Balaganesan, Heh-Lung Huang
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Publication number: 20170025617Abstract: An organic light-emitting element is provided, including: an anode; a first hole assisting layer and a second hole assisting layer sequentially formed on the anode; a light-emitting layer formed on and in contact with the second hole assisting layer, the light-emitting layer including a host luminesce containing a compound having a carbazole group; at least one electron transport layer formed on the light-emitting layer; and a cathode formed on the electron transport layer, the second hole assisting layer including a hole transport compound represented by formula (I) to improve the performance of the organic light-emitting element.Type: ApplicationFiled: June 10, 2016Publication date: January 26, 2017Inventors: Heh-Lung Huang, Banumathy Balaganesan, Hsuan-Lung Lu
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Patent number: 9450192Abstract: The present invention provides a carbazole derivative of formula (I) for an organic electroluminescent device: wherein Y represents a heteroatom selected from N, O, P, S, or a bicyclic or tricyclic heterocyclic ring; and Ar1 and Ar2 each independently represent an alkyl or aryl substituted or unsubstituted aromatic hydrocarbon, or an alkyl or aryl substituted or unsubstituted heterocyclic aromatic hydrocarbon.Type: GrantFiled: December 5, 2011Date of Patent: September 20, 2016Assignee: E-RAY OPTOELECTRONICS TECHNOLOGYInventors: Banumathy Balaganesan, Kun-Feng Chiang, Huang-Ming Guo, Po-Wei Hsu
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Compound for organic electroluminescent device and organic electroluminescent devices using the same
Patent number: 9353085Abstract: The present invention provides a compound of formula (I) for an organic electroluminescent device: wherein X1, X2, X3, Y, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, and Ar7 are as defined in the description.Type: GrantFiled: June 8, 2012Date of Patent: May 31, 2016Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Yi-Huan Fu, Kun-Feng Chiang, Fang-Shih Lin, Zheng-Feng Ye, Chang-Ying Chu -
Publication number: 20160133848Abstract: The present invention discloses a novel heterocyclic compound of Formula (1) and an organic electroluminescent device using the same, in which variables are as described herein. The heterocyclic compound of Formula (1) is present in the emitting layer as a light emitting host in combination with a dopant and another host, in the organic electroluminescent device and high luminous efficiency and low driving voltage are achieved.Type: ApplicationFiled: November 12, 2014Publication date: May 12, 2016Inventors: Banumathy Balaganesan, Heh-Lung Huang, Cheng-Chung Yao, Po-Wei Hsieh, Hui-Hsu Chen
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Patent number: 9306096Abstract: The present invention discloses an electrically conducting composition that include a charge transporting oligomer selected either from oligoanilines and/or oligothiophenes and electron accepting dopants; and further contain conductivity enhancing substances such as ionic liquids, or a nanoparticle, dissolved in a mixture of at least two solvents to achieve the desired formulation for making the electrically conductive layer for organic electronic devices.Type: GrantFiled: August 16, 2013Date of Patent: April 5, 2016Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Cheng-Chung Yao, Abraham Joseph Kakanat
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Publication number: 20150372242Abstract: The present invention provides a high triplet energy compound of Formula 1 for an organic electroluminescent device: In Formula 1, X represents an oxygen or a sulfur atom, and represents a substituted or unsubstituted hetero-aromatic ring containing at least two nitrogens or an alkyl group with C2 to C6. The organic electroluminescent device including the compound used in an emissive layer or an electron transporting layer enhances the efficiency and the stability of the device.Type: ApplicationFiled: June 17, 2015Publication date: December 24, 2015Inventors: Banumathy Balaganesan, Heh-Lung Huang, Huang-Ming Guo, Po-Wei Hsu
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Patent number: 9153787Abstract: The present invention discloses a novel compound of Formula 1, and an organic electroluminescent device using the same. In Formula 1, X and Y independently represents an aromatic or a hetero aromatic hydrocarbon having a carbon number of from 5 to 10. Ar1 to Ar7 each independently represents an unsubstituted or substituted aromatic hydrocarbon having a carbon number of from 4 to C12, or an unsubstituted or substituted condensed polycyclic aromatic hydrocarbon having a carbon number of from 4 to 12; Ar1 to Ar7 can form an annulated or fused aromatic ring system with the adjacent aromatic hydrocarbons. When the compound of Formula I is used in the device, high luminous efficiency, longer lifetime and low driving voltage can be achieved.Type: GrantFiled: December 6, 2013Date of Patent: October 6, 2015Assignee: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Heh-Lung Huang, Po-Wei Hsu, Kun-Feng Chiang
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Publication number: 20140284580Abstract: Disclosed is a novel compound of Formula 1 and an organic electroluminescent device using the same. In Formula 1, X and Y independently represents a hydrogen, an aromatic or a hetero aromatic hydrocarbon having C5 to C10 carbons; X and Y may be the same or different; Ar1 to Ar2 each represent a hydrogen, an unsubstituted or substituted aromatic hydrocarbon having C4 to C12 carbons, or an unsubstituted or substituted condensed polycyclic aromatic hydrocarbon having C4 to C12 carbons; Ar1 to Ar2 can form a fused aromatic ring system with the adjacent aromatic hydrocarbons. The compound of Formula 1 is present in the electron injection or a transport material, or an exciton blocking layer in the organic light emitting device, and thereby improving the device stability, lowering the operational voltage.Type: ApplicationFiled: March 21, 2014Publication date: September 25, 2014Applicant: E-RAY OPTOELECTRONICS TECHONOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Heh-Lung Huang, Po-Wei Hsu, Fang-Shih Lin
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Publication number: 20140163233Abstract: The present invention discloses a novel compound of Formula 1, and an organic electroluminescent device using the same. In Formula 1, X and Y independently represents an aromatic or a hetero aromatic hydrocarbon having a carbon number of from 5 to 10. Ar1 to Ar7 each independently represents an unsubstituted or substituted aromatic hydrocarbon having a carbon number of from 4 to C12, or an unsubstituted or substituted condensed polycyclic aromatic hydrocarbon having a carbon number of from 4 to 12; Ar1 to Ar7 can form an annulated or fused aromatic ring system with the adjacent aromatic hydrocarbons. When the compound of Formula I is used in the device, high luminous efficiency, longer lifetime and low driving voltage can be achieved.Type: ApplicationFiled: December 6, 2013Publication date: June 12, 2014Applicant: E-RAY OPTOELECTRONICS TECHONOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Heh-Lung Huang, Po-Wei Hsu, Kun-Feng Chiang
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Publication number: 20140048747Abstract: The present invention discloses an electrically conducting composition that include a charge transporting oligomer selected either from oligoanilines and/or oligothiophenes and electron accepting dopants; and further contain conductivity enhancing substances such as ionic liquids, or a nanoparticle, dissolved in a mixture of at least two solvents to achieve the desired formulation for making the electrically conductive layer for organic electronic devices.Type: ApplicationFiled: August 16, 2013Publication date: February 20, 2014Applicant: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy BALAGANESAN, Cheng-Chung YAO
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Compound for organic electroluminescent device and organic electroluminescent device having the same
Patent number: 8592055Abstract: The present invention provides a compound of formula (I) for an organic electroluminescent device: wherein X and Y are each independently selected for the group consisting of an alkyl substituted, aryl substituted or unsubstituted carbazole, indolocarbazole, triphenylsilyl and diphenylphosphine oxide represented by formula (A), (B), (C), (D) or (E).Type: GrantFiled: June 16, 2011Date of Patent: November 26, 2013Assignee: E-Ray Optoelectronics Technology Co., Ltd.Inventors: Banumathy Balaganesan, Yi-Huan Fu, Huang-Ming Guo -
Publication number: 20130048956Abstract: The present invention provides a compound of formula (I) for an organic electroluminescent device: wherein X1, X2, X3, Y, Ar1, Ar2, Ar3, Ar4, Ar5, Ar6, and Ar7 are as defined in the description.Type: ApplicationFiled: June 8, 2012Publication date: February 28, 2013Applicant: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Yi-Huan Fu, Kun-Feng Chiang, Fang-Shih Lin, Zheng-Feng Ye, Chang-Ying Chu
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Publication number: 20120175598Abstract: The present invention provides a carbazole derivative of formula (I) for an organic electroluminescent device: wherein Y represents a heteroatom selected from N, O, P, S, or a bicyclic or tricyclic heterocyclic ring; and Ar1 and Ar2 each independently represent an alkyl or aryl substituted or unsubstituted aromatic hydrocarbon, or an alkyl or aryl substituted or unsubstituted heterocyclic aromatic hydrocarbon.Type: ApplicationFiled: December 5, 2011Publication date: July 12, 2012Applicant: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Kun-Feng Chiang, Huang-Ming Guo, Po-Wei Hsu
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COMPOUND FOR ORGANIC ELECTROLUMINESCENT DEVICE AND ORGANIC ELECTROLUMINESCENT DEVICE HAVING THE SAME
Publication number: 20110309345Abstract: The present invention provides a compound of formula (I) for an organic electroluminescent device: wherein X and Y are each independently selected for the group consisting of an alkyl substituted, aryl substituted or unsubstituted carbazole, indolocarbazole, triphenylsilyl and diphenylphosphine oxide represented by formula (A), (B), (C), (D) or (E), in which R1, R2, and R3 are each independently selected from the group consisting of a hydrogen, an alkyl having 1 to 15 carbons atoms, an aryl group having 6 to 15 carbons atoms, an alkyl substituted, an aryl substituted or unsubstituted triphenylsilyl, and a diphenylphosphine oxide represented by the formula (D) or (E); m and n are each independently 0 or 1, provided that m+n is 1 or more; and Ar1 and Ar2 are each independently selected from the group consisting of an alkyl substituted, aryl substituted or unsubstituted phenyl, tolyl, naphthyl, fluorenyl, anthracenyl, and phenanthryl.Type: ApplicationFiled: June 16, 2011Publication date: December 22, 2011Applicant: E-RAY OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Banumathy Balaganesan, Yi-Huan Fu, Huang-Ming Guo