Patents by Inventor Yong-Jin Pu
Yong-Jin Pu 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: 20230276701Abstract: In order to provide an organic compound that can be suitably used as a luminescent material for a display, and an organic light emitting device containing such an organic compound, an organic compound in accordance with an embodiment of the present invention has a lone electron-pair and a ? E electron orbit, and in the organic compound, an energy gap ?EST obtained by subtracting an energy level ET1 of a lowest triplet excitation state T1 from an energy level ES1 of a lowest singlet excitation mode S1 is ?0.20 eV??EST<0.0090 eV.Type: ApplicationFiled: June 15, 2021Publication date: August 31, 2023Inventors: Daigo MIYAJIMA, Naoya AIZAWA, Yong-Jin PU, Atsuko NIHONYANAGI, Ryotaro IBUKA, Hiroyuki INUDUKA
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Patent number: 10529954Abstract: An object of the present invention is to provide an organic thin-film laminate capable of suppressing function reduction even when an intermediate layer is formed using a wet method. The organic thin-film laminate has one or more organic functional layers, the organic thin-film laminate being characterized by being provided with: a first light-emitting layer 12 containing a first light-emitting-layer material that is soluble in a polar solvent other than a fluorinated solvent, and is insoluble in a fluorinated solvent; a second light-emitting layer 14 laminated on the first light-emitting layer 12; and one or more intermediate layers comprising a non-curable material, the intermediate layers being provided between the first light-emitting layer 12 and the second light-emitting layer 14, an intermediate layer 13, among the one or more intermediate layers, containing a conductive polymer having no polymerizable group and containing a fluorinated solvent in the range of 1-1000 mass ppm.Type: GrantFiled: March 18, 2016Date of Patent: January 7, 2020Assignees: KONICA MINOLTA, INC., NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITYInventors: Kazuhiro Oikawa, Toshihiko Iwasaki, Takayuki Chiba, Yong-Jin Pu, Junji Kido
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Publication number: 20180183011Abstract: An object of the present invention is to provide an organic thin-film laminate capable of suppressing function reduction even when an intermediate layer is formed using a wet method. The organic thin-film laminate has one or more organic functional layers, the organic thin-film laminate being characterized by being provided with: a first light-emitting layer 12 containing a first light-emitting-layer material that is soluble in a polar solvent other than a fluorinated solvent, and is insoluble in a fluorinated solvent; a second light-emitting layer 14 laminated on the first light-emitting layer 12; and one or more intermediate layers comprising a non-curable material, the intermediate layers being provided between the first light-emitting layer 12 and the second light-emitting layer 14, an intermediate layer 13, among the one or more intermediate layers, containing a conductive polymer having no polymerizable group and containing a fluorinated solvent in the range of 1-1000 mass ppm.Type: ApplicationFiled: March 18, 2016Publication date: June 28, 2018Inventors: Kazuhiro OIKAWA, Toshihiko IWASAKI, Takayuki CHIBA, Yong-Jin PU, Junji KIDO
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Patent number: 9425411Abstract: To provide an organic electroluminescent element that can attain efficiency improvement by forming an electron injection layer by a film that is stable and excellent in uniformity, and forming a charge generation layer capable of effectively exhibiting the function. In an organic electroluminescent element provided with at least one organic layer between a pair of electrodes, an electron injection layer comprising a ZnO-containing layer, and a charge generation layer containing an electron acceptor-containing film in contact with the cathode side thereof and an electron donor-containing film adjacent thereto are formed.Type: GrantFiled: February 15, 2013Date of Patent: August 23, 2016Assignee: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITYInventors: Yong-Jin Pu, Takayuki Chiba, Junji Kido, Sei Satoh, Kazushige Ideta
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Patent number: 9373823Abstract: In a coating-type electron injection layer or electron transport layer using a metal oxide, the present invention aims at improving uniformity or stability of composition distribution and adhesion with another adjoining constituent layer, and improving film forming property, to thereby provide an organic electronic device and manufacture of the device whose efficiency is improved. In the organic electronic device having one pair of electrodes on a substrate, and having at least one organic layer between the electrodes, the electron injection layer or the electron transport layer is formed by application of a liquid material in which an alkaline metal salt and zinc-oxide nano particles are dissolved in alcohol.Type: GrantFiled: August 11, 2011Date of Patent: June 21, 2016Assignee: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITYInventors: Takayuki Chiba, Yang Yang, Yong-Jin Pu, Junji Kido
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Publication number: 20160020406Abstract: To provide an organic electroluminescent element that can attain efficiency improvement by forming an electron injection layer by a film that is stable and excellent in uniformity, and forming a charge generation layer capable of effectively exhibiting the function. In an organic electroluminescent element provided with at least one organic layer between a pair of electrodes, an electron injection layer comprising a ZnO-containing layer, and a charge generation layer containing an electron acceptor-containing film in contact with the cathode side thereof and an electron donor-containing film adjacent thereto are formed.Type: ApplicationFiled: February 15, 2013Publication date: January 21, 2016Inventors: Yong-Jin PU, Takayuki CHIBA, Junji KIDO, Sei SATOH, Kazushige IDETA
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Patent number: 8927972Abstract: A current-amplifying transistor device is provided, between an emitter electrode and a collector electrode, with two organic semiconductor layers and a sheet-shaped base electrode. One of the organic semiconductor layers is arranged between the emitter electrode and the base collector electrode, and has a diode structure of a p-type organic semiconductor layer and an n-type p-type organic semiconductor layer. A current-amplifying, light-emitting transistor device including the current-amplifying transistor device and an organic EL device portion formed in the current-amplifying transistor device is also disclosed.Type: GrantFiled: September 3, 2010Date of Patent: January 6, 2015Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Ken-ichi Nakayama, Junji Kido, Yong-Jin Pu, Fumito Suzuki, Naomi Oguma, Naoki Hirata
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Patent number: 8895963Abstract: An organic semiconductor material is represented by the following formula (F): wherein A represents a cyclic conjugated skeleton structure formed of one or more aromatic rings, and R1 and R2 each independently represent a substituted or unsubstituted alkyl group. The organic semiconductor material has high electron mobility and high on/off ratio, and can form an organic semiconductor thin film by a solution process making use of its solution.Type: GrantFiled: May 11, 2010Date of Patent: November 25, 2014Assignees: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Ken-ichi Nakayama, Junji Kido, Yong-Jin Pu, Yohei Hashimoto, Naomi Oguma, Naoki Hirata
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Publication number: 20140084280Abstract: In a coating-type electron injection layer or electron transport layer using a metal oxide, the present invention aims at improving uniformity or stability of composition distribution and adhesion with another adjoining constituent layer, and improving film forming property, to thereby provide an organic electronic device and manufacture of the device whose efficiency is improved. In the organic electronic device having one pair of electrodes on a substrate, and having at least one organic layer between the electrodes, the electron injection layer or the electron transport layer is formed by application of a liquid material in which an alkaline metal salt and zinc-oxide nano particles are dissolved in alcohol.Type: ApplicationFiled: August 11, 2011Publication date: March 27, 2014Applicant: NATIONAL UNIVERSITY CORPORATION YAMAGATA UNIVERSITYInventors: Takayuki Chiba, Yang Yang, Yong-Jin Pu, Junji Kido
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Publication number: 20120146011Abstract: A current-amplifying transistor device is provided, between an emitter electrode and a collector electrode, with two organic semiconductor layers and a sheet-shaped base electrode. One of the organic semiconductor layers is arranged between the emitter electrode and the base collector electrode, and has a diode structure of a p-type organic semiconductor layer and an n-type p-type organic semiconductor layer. A current-amplifying, light-emitting transistor device including the current-amplifying transistor device and an organic EL device portion formed in the current-amplifying transistor device is also disclosed.Type: ApplicationFiled: September 3, 2010Publication date: June 14, 2012Applicants: KEN-ICHI NAKAYAMA, DAINICHISEIKA COLOR & CHEMICALS Mfg.Co., Ltd.Inventors: Ken-ichi Nakayama, Junji Kido, Yong-Jin Pu, Fumito Suzuki, Naomi Oguma, Naoki Hirata
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Publication number: 20120056166Abstract: An organic semiconductor material is represented by the following formula (F): wherein A represents a cyclic conjugated skeleton structure formed of one or more aromatic rings, and R1 and R2 each independently represent a substituted or unsubstituted alkyl group. The organic semiconductor material has high electron mobility and high on/off ratio, and can form an organic semiconductor thin film by a solution process making use of its solution.Type: ApplicationFiled: May 11, 2010Publication date: March 8, 2012Applicants: Dainichiseika Color & Chemicals Mfg. Co., Ltd.Inventors: Ken-ichi Nakayama, Junji Kido, Yong-Jin Pu, Yohei Hashimoto, Naomi Oguma, Naoki Hirata