Patents Examined by Brett A Crouse
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Patent number: 8154195Abstract: An organic electroluminescence device includes: a cathode; an anode; and a single-layered or multilayered organic thin-film layer provided between the cathode and the anode. In the organic electroluminescence device, the organic thin-film layer includes at least one emitting layer, and the at least one emitting layer contains: at least one phosphorescent material; and a host material represented by the following formula (1). Ra—Ar1—Ar2—Rb??(1) In the formula, Ar1, Ar2, Ra and Rb each represent a substituted or unsubstituted benzene ring or a substituted or unsubstituted condensed aromatic hydrocarbon group selected from a group consisting of a naphthalene ring, a chrysene ring, a fluoranthene ring, a triphenylene ring, a phenanthrene ring, a benzophenanthrene ring, a dibenzophenanthrene ring, a benzotriphenylene ring, a benzochrysene ring, a picene ring and a benzo[b]fluoranthene ring.Type: GrantFiled: May 16, 2008Date of Patent: April 10, 2012Assignee: Idemitsu Kosan Co., Ltd.Inventors: Kazuki Nishimura, Toshihiro Iwakuma, Kenichi Fukuoka, Chishio Hosokawa, Masahiro Kawamura, Mitsunori Ito, Yoriyuki Takashima, Toshinari Ogiwara
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Patent number: 8120243Abstract: A material for an organic photoelectric device, the material including a compound represented by the following Chemical Formula 1: wherein, in Chemical Formula 1, HTU and HTU? are independently hole transporting units, and R1 to R3 are independently a substituent selected from the group of hydrogen, a substituted or unsubstituted C6 to C30 aryl, a substituted or unsubstituted C2 to C30 heteroaryl, and a substituted or unsubstituted C1 to C30 alkyl, wherein the term “substituted” refers to one substituted with a halogen, a C1 to C30 alkyl, a C1 to C30 haloalkyl, a C6 to C30 aryl, a C2 to C30 heteroaryl, a C1 to C20 alkoxy, or combinations thereof.Type: GrantFiled: May 3, 2010Date of Patent: February 21, 2012Assignee: Cheil Industries, Inc.Inventors: Young-Hoon Kim, Eun-Sun Yu, Nam-Soo Kim, Mi-Young Chae
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Patent number: 8115378Abstract: This invention relates to electroluminescent 3,6,9,12-tetrasubstituted chrysenes that are useful in electroluminescent applications. It also relates to electronic devices in which the active layer includes such a chrysene composition.Type: GrantFiled: December 20, 2007Date of Patent: February 14, 2012Assignee: E. I. du Pont de Nemours and CompanyInventor: Alex Sergey Ionkin
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Patent number: 8102113Abstract: There is provided a quinoxaline-containing compound represented by the following formula (I); wherein Ar1 represents a substituted or unsubstituted monovalent aromatic group; and R1 represents a hydrogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted aralkyl group.Type: GrantFiled: March 3, 2008Date of Patent: January 24, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Koji Horiba, Hidekazu Hirose, Takeshi Agata
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Patent number: 8084935Abstract: There are provided an organic electroluminescent (EL) element, which can realize the provision of a large screen by the formation of a film through coating in a simple and highly efficient manner, and a display panel using the same. The organic EL element comprises: a pair of opposed electrodes, a cathode and an anode; and an organic compound layer having a single-layer or multi-layer structure held between the pair of opposed electrodes, at least one layer constituting the organic compound layer being a layer containing at least one polymer comprising at least one monomer unit of a specific compound.Type: GrantFiled: November 9, 2004Date of Patent: December 27, 2011Assignee: Dai Nippon Printing Co., Ltd.Inventors: Satoshi Suzuki, Masato Okada, Yoshinobu Kashibuchi, Tohru Kobayashi
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Patent number: 8058797Abstract: An electroluminescent device includes a hole injecting electrode, an electron injecting electrode and at least one organic light emitting layer disposed between the hole injecting electrode and the electron injecting electrode wherein a layered metal chalcogenide layer is disposed between the hole injecting electrode and the light emitting layer.Type: GrantFiled: May 16, 2002Date of Patent: November 15, 2011Assignee: Cambridge University Technical Services LimitedInventors: Gitti Frey, Kieran J. Reynolds
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Patent number: 8052952Abstract: Provided is a nanotube-polymer composite which can effectively utilize characteristics of a carbon nanotube structure. The composite includes a carbon nanotube structure and a polymer, in which: the carbon nanotube structure has a network structure constructed by mutually cross-linking functional groups bonded to multiple carbon nanotubes through chemical bonding of the functional groups together; and the polymer is filled in the network structure.Type: GrantFiled: February 1, 2010Date of Patent: November 8, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Miho Watanabe, Kentaro Kishi, Chikara Manabe, Kazunori Anazawa, Masaki Hirakata, Taishi Shigematsu, Hiroyuki Watanabe, Takashi Isozaki, Shigeki Ooma, Shinsuke Okada
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Patent number: 8049406Abstract: A light-emissive device comprising a light-emissive material provided between first and second electrodes such that charge carriers can move between the first and second electrodes and the light-emissive material, wherein the device includes a layer of a polymer blend provided between the first and second electrodes, phase separation of the polymers in the polymer blend having been induced in at least a portion of the polymer blend so as to control the propagation of light emitted by the light-emissive material in a predetermined direction.Type: GrantFiled: April 12, 2002Date of Patent: November 1, 2011Assignee: Cambridge University Technical Services LimitedInventors: J. Devin Mackenzie, Ana Claudia Arias, Richard Henry Friend, Wilhelm Huck
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Patent number: 8026664Abstract: To provide a novel fluoranthene derivative and an organic light emitting device having the fluoranthene derivative.Type: GrantFiled: April 19, 2007Date of Patent: September 27, 2011Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Keiji Okinaka, Satoshi Igawa, Jun Kamatani, Naoki Yamada, Masashi Hashimoto, Masanori Muratsubaki, Takao Takiguchi, Akihiro Senoo, Shinjiro Okada, Minako Nakasu
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Patent number: 8026665Abstract: Disclosed are a novel deuterated aryl amine compound capable of enhancing thermal stability, hole transporting capability, luminescence efficiency, etc. of an organic light emitting diode at the time of being used as a hole-injecting layer, a preparation method thereof, and an organic light emitting diode using the same.Type: GrantFiled: November 18, 2005Date of Patent: September 27, 2011Assignee: Doosan CorporationInventors: Kyoung-soo Kim, Tae-hyung Kim, Kyu-man Youn, Hyeon-jin Seo, Myung-soo Ko, Sang-hoon Lee, Dong-wan Ryu, Yeong-eun Kim
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Patent number: 8026662Abstract: It is an object to provide an organic light-emitting element having two or more light-emitting layers, wherein degradation of each constituent material for the light-emitting layer is reduced to improve reliability of the element. The present invention provides an organic light-emitting element having a laminated structure with a first mixed light-emitting layer 4 composed of a hole transport material, an electron transport material and a dopant which determines a color of an emitted light, and a second mixed light-emitting layer 5 composed of a hole transport material, an electron transport material and a dopant which determines a color of an emitted light, and also provides an image display device which uses the organic light-emitting element.Type: GrantFiled: February 14, 2005Date of Patent: September 27, 2011Assignee: Hitachi Displays, Ltd.Inventors: Shingo Ishihara, Sukekazu Aratani, Masaya Adachi, Takayuki Ouchi
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Patent number: 8026663Abstract: The present invention provides a novel compound represented by general formula (I) below, a method of manufacturing the same and an organic electroluminescent device employing the same: where R1 to R6 are independent of one another and are each a hydrogen atom or a substituent represented by general formula (II) below, and at least one of R1 to R6 is a substituent represented by general formula (II): —C?C—SiRaRbRc??(II) where Ra, Rb and Rc are independent of one another and are each an aliphatic hydrocarbon group having 1 to 10 carbon atoms or an aromatic hydrocarbon group.Type: GrantFiled: October 5, 2005Date of Patent: September 27, 2011Assignee: National University Corporation Gunma UniversityInventors: Hideyuki Matsumoto, Soichiro Kyushin, Keisuke Negishi, Youhei Ono, Manabu Uchida, Hidefumi Oomori
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Patent number: 7990046Abstract: A material for electroluminescent devices which comprises a compound in which a heterocyclic group having nitrogen is bonded to carbazolyl group and an organic electroluminescent device having at least one organic thin film layer which is sandwiched between the cathode and the anode and contains the above material in at least one layer, are provided. The material can provide organic electroluminescent devices emitting bluish light with a high purity of color. The organic electroluminescence device uses the material.Type: GrantFiled: March 13, 2003Date of Patent: August 2, 2011Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshihiro Iwakuma, Chishio Hosokawa, Hidetsugu Ikeda, Seiji Tomita, Takashi Arakane
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Patent number: 7982391Abstract: An organic electroluminescent device comprising two electrodes and at least one organic compound layer disposed between the electrodes, wherein a luminescent layer is included in the organic compound layers, the luminescent layer includes a fluorescent compound, at least one of the organic compound layers comprises an amplifying agent, the fluorescent compound emits fluorescent light upon application of voltage, the amplifying agent is capable of amplifying a number of singlet excitons and of amplifying luminescence intensity, and an amount of the amplifying agent is such an amount that at least 51% of light components emitted by the device upon the application of voltage is fluorescent light, wherein the fluorescent compound is selected from the group consisting of a distyryl arylene derivative, an oligoarylene derivative, an nitrogen-containing aromatic heterocyclic compound, a sulfur-containing heterocyclic compound, a metal complex, an oxo-substituted heterocyclic compound, an organosilicon compound and aType: GrantFiled: December 23, 2004Date of Patent: July 19, 2011Assignee: Fujifilm CorporationInventors: Tatsuya Igarashi, Toshihiro Ise
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Patent number: 7977861Abstract: A composition is described comprising a mixture of at least two different dendrimers A and B which possess the same core and the same repeating unit or units in the dendrons. Either the generation of at least one of said dendrons in one of said dendrimers (A) is different from the generation of at least one of the dendrons in the other of said dendrimers (B), or the number of dendrons in one of said dendrimers, or both, is different from the number of dendrons in the other of said dendrimers, or both.Type: GrantFiled: August 28, 2003Date of Patent: July 12, 2011Assignees: Isis Innovation Limited, The University Court of the University of St. AndrewsInventors: Paul Leslie Burn, Ifor David William Samuel
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Patent number: 7965032Abstract: The present invention provides a novel anthracene derivative and an organic electronic device using the same. The organic electronic device according to the present invention shows excellent characteristics in efficiency, drive voltage, and life time.Type: GrantFiled: March 6, 2007Date of Patent: June 21, 2011Assignee: LG Chem, Ltd.Inventors: Jae-Soon Bae, Dae-Woong Lee, Dong-Hoon Lee, Jun-Gi Jang, Sang-Young Jeon, Ji-Eun Kim
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Patent number: 7952269Abstract: An organic light-emitting device is provided which has an optical output with a high efficiency, a high luminance and a long life and which includes a pair of electrodes including an anode and a cathode, and at least one layer comprising an organic compound provided between the pair of electrodes, wherein at least one layer having a light-emitting region of the at least one layer comprising the organic compound comprises a first compound represented by the general formula (1): and a second compound having a bandgap larger than a bandgap of the first compound.Type: GrantFiled: November 16, 2005Date of Patent: May 31, 2011Assignee: Canon Kabushiki KaishaInventors: Keiji Okinaka, Masataka Yashima, Akihito Saitoh, Naoki Yamada, Akihiro Senoo, Kazunori Ueno
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Patent number: 7839076Abstract: An organic electroluminescent device comprising an organic layer is provided. The organic layer is an electron transport layer comprising an electron transport material and a blue emission material. This electron transport layer causes an increase in the blue emission efficiency and lifespan of the organic electroluminescent device while improving efficiency in red and green ranges, a driving voltage, a color coordinate, and the lifespan of the organic electroluminescent device are not changed.Type: GrantFiled: July 28, 2005Date of Patent: November 23, 2010Assignee: Samsung Mobile Display Co., Ltd.Inventors: Hye-In Jeong, Ok-Keun Song, Young-Mo Koo, Yong-Han Lee
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Patent number: 7839074Abstract: An organic electroluminescence device which comprises a cathode, an anode and an organic thin film layer comprising at least one layer comprising a light emitting layer and disposed between the cathode and the anode, wherein at least one layer in the organic thin film layer comprises an anthracene derivative having a specific structure singly or as a component of a mixture, and an anthracene derivative having a specific asymmetric structure and providing an organic electroluminescence device exhibiting a great efficiency of light emission and having a long life, are provided.Type: GrantFiled: August 18, 2003Date of Patent: November 23, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hidetsugu Ikeda, Motohisa Ido, Masakazu Funahashi
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Patent number: 7795801Abstract: An organic electroluminescent element comprising a light emission layer and a hole blocking layer adjacent to the light emission layer, wherein, (i) the light emission layer contains a compound having a specified partial structure and having a molecular weight of not more than 1700; and (ii) the hole blocking layer contains a derivative selected from the group consisting of a styryl derivative, a boron derivative and a carboline derivative.Type: GrantFiled: September 21, 2004Date of Patent: September 14, 2010Assignee: Konica Minolta Holdings, Inc.Inventors: Noriko Ueda, Taketoshi Yamada, Hiroshi Kita, Mitsuhiro Fukuda