Electroluminescent Patents (Class 428/917)
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Patent number: 8927120Abstract: A heterocyclic compound represented by Formula 1 or Formula 2 below, an organic light-emitting device including the heterocyclic compound, and a flat display device including the organic light-emitting device: wherein Ar1 to Ar16, and R1 to R4 are defined as in the specification.Type: GrantFiled: May 24, 2012Date of Patent: January 6, 2015Assignee: Samsung Display Co., Ltd.Inventors: Jeoung-In Yi, Seung-Gak Yang, Hee-Yeon Kim, Jae-Yong Lee
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Patent number: 8927117Abstract: The present invention relates to a compound of the formula (1) and (2) The invention further relates to a process to produce the compound. The invention additionally relates and an electronic device containing the compound of the formula (1) or (2). The electronic device can be an organic electroluminescence devices, particularly a blue emitting device, in which compounds are used as host materials or dopants in the emitting layer and/or as hole transport materials and/or as electron transport materials.Type: GrantFiled: March 17, 2009Date of Patent: January 6, 2015Assignee: Merck Patent GmbHInventors: Arne Buesing, Holger Heil, Philipp Stoessel
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Patent number: 8927119Abstract: There is provided an organic compound having excellent characteristics, including excellent electron-injecting/transporting performance, hole blocking ability, and high stability in the thin-film state, for use as material of an organic electroluminescent device having high efficiency and high durability. There is also provided a high-efficient and high-durable organic electroluminescent device using the compound. The compound is represented by general formula (1) having a substituted anthracene ring structure and a pyridoindole ring structure. The organic electroluminescent device includes a pair of electrodes, and one or more organic layers sandwiched between the pair of electrodes, and the compound is used as a constituent material of at least one organic layer.Type: GrantFiled: July 28, 2010Date of Patent: January 6, 2015Assignee: Hodogaya Chemical Co., Ltd.Inventors: Norimasa Yokoyama, Shuichi Hayashi, Naoaki Kabasawa, Daizou Kanda, Shigeru Kusano
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Patent number: 8927121Abstract: Disclosed herein are compounds represented by Formula 1, wherein R1, Ar1, X, Ar2, Ar3, and Het are described herein. Compositions and light-emitting devices related thereto are also disclosed.Type: GrantFiled: June 24, 2013Date of Patent: January 6, 2015Assignee: Nitto Denko CorporationInventors: Shijun Zheng, Jensen Cayas, Sheng Li, Amane Mochizuki, Hyun Sik Chae, Brett T. Harding
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Patent number: 8920944Abstract: Use of a precursor of an n-dopant for doping an organic semiconductive material, as a blocking layer, as a charge injection layer, as an electrode material, as a storage material or as a semiconductor material itself in electronic or optoelectronic components, the precursor being selected from the following formulae 1-3c:Type: GrantFiled: June 20, 2008Date of Patent: December 30, 2014Assignee: Novaled AGInventors: Michael Limmert, Andrea Lux, Horst Hartmann
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Patent number: 8920940Abstract: In a light emitting element using an organic metal complex which can convert an excited triplet state into a light emission, a red color light emitting element exhibiting a high light emission efficiency and an excellent color purity is provided. A material used in a hole transporting layer and a host contained in a light emitting layer and an electron transporting layer has a triplet excitation energy larger than a triplet excitation energy of the organic metal complex which is a light emitting substance to enable a current efficiency and an external quantum efficiency of the light emitting element to be improved. It is possible to obtain a current efficiency of 2.0 cd/A or more and an external quantum efficiency of 5% or more. The color purity is excellent. The CIE chromaticity coordinate is X?0.7 and Y?0.3 to make it possible to exceed an NTSC standard.Type: GrantFiled: May 16, 2006Date of Patent: December 30, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Nobuharu Ohsawa, Hideko Inoue, Satoshi Seo, Satoko Shitagaki
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Patent number: 8920941Abstract: It is an object to provide a novel material having a bipolar property, a light emitting element provided with the novel material, and a display device that includes the light emitting element. It is an object to provide a pyrazine derivative represented by the following general formula (g-1).Type: GrantFiled: December 22, 2006Date of Patent: December 30, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hiroko Murata, Masakazu Egawa, Harue Nakashima, Sachiko Kawakami, Nobuharu Ohsawa, Satoshi Seo
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Patent number: 8920943Abstract: A metal coordination compound represented by the formula: An organic luminescence device including an anode, a cathode, and an organic layer, which contains the metal coordination compound, disposed between the anode and the cathode.Type: GrantFiled: February 13, 2009Date of Patent: December 30, 2014Assignee: Canon Kabushiki KaishaInventors: Jun Kamatani, Shinjiro Okada, Akira Tsuboyama, Takao Takiguchi, Seishi Miura, Koji Noguchi, Takashi Moriyama, Satoshi Igawa, Manabu Furugori
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Patent number: 8922109Abstract: A light emitting material included in a light emitting device. The light emitting material includes a conjugated polymer having a conjugated part and a blue light emitting compound having a blue light emitting part and satisfies the following formula y?log10(5.1×x0.Type: GrantFiled: January 28, 2011Date of Patent: December 30, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Makoto Anryu, Kohei Asada, Shigeru Sasaki, Takeshi Yamada
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Patent number: 8920939Abstract: Regioregular polythiophenes having heteroatoms in the substituents can be used in hole injection layer and hole transport layers for electroluminescent devices. Copolymers and organic oxidants can be used. Homopolymers can be used. Metallic impurities can be removed. The heteroatom can be oxygen and can be substituted at the 3-position. Advantages include versatility, synthetic control, and good thermal stability. Different device designs can be used.Type: GrantFiled: September 26, 2005Date of Patent: December 30, 2014Assignee: Solvay USA, Inc.Inventors: Shawn P. Williams, Darin W. Laird, Troy D. Hammond
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Patent number: 8922116Abstract: A light emitting element of the invention includes n pieces of light emitting layers (n is a natural number) between first and second electrodes. A first layer and a second layer are provided between the mth light emitting layer (m is a natural number of 1?m?n) and the m+1th light emitting layer. The first and second layers are contacted to each other. The first layer contains a substance that transports holes easily and a substance with an electron accepting property. The second layer contains a substance that transports electrons easily and a substance with an electron donating property. Molybdenum oxide is used as the substance with the electron accepting property.Type: GrantFiled: December 31, 2012Date of Patent: December 30, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Daisuke Kumaki, Hisao Ikeda, Hiroko Abe, Satoshi Seo
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Patent number: 8920942Abstract: Disclosed is an organic electroluminescent element having high luminous efficiency and long life. Also disclosed are a display device and an illuminating device respectively using such an organic electroluminescent element. Specifically disclosed is an organic electroluminescent element comprising an electrode and at least one or more organic layers on a substrate. This organic electroluminescent element is characterized in that at least one of the organic layers is a light-emitting layer containing a phosphorescent compound and a host compound, the phosphorescent compound has a HOMO of ?5.15 to ?3.50 eV and a LUMO of from ?1.25 to +1.00 eV, and the host compound has a 0-0 band of the phosphorescence spectrum at not more than 460 nm and a glass transition temperature of not less than 60° C.Type: GrantFiled: March 20, 2007Date of Patent: December 30, 2014Assignee: Konica Minolta Holdings, Inc.Inventors: Shinya Otsu, Hiroshi Kita, Eisaku Katoh
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Patent number: 8916276Abstract: An object of the present invention is to provide a composite material formed of an organic compound and an inorganic compound, and has an excellent carrier transporting property, an excellent carrier injecting property to the organic compound, as well as excellent transparency. A composite material of the present invention for achieving the above object is a composite material of an organic compound represented in the general formula below, and an inorganic compound. For the inorganic compound, an oxide of a transition metal, preferably an oxide of a metal belonging to groups 4 to 8 of the periodic table, in particular vanadium oxide, tantalum oxide, molybdenum oxide, tungsten oxide, rhenium oxide, and ruthenium oxide, can be used.Type: GrantFiled: January 7, 2013Date of Patent: December 23, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Yuji Iwaki, Satoshi Seo, Daisuke Kumaki
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Patent number: 8916275Abstract: Disclosed is an organic electroluminescent element which has achieved both high luminous efficiency and low driving voltage by containing a light-emitting element material, which comprises a specific pyrene compound, in one of the layers that constitute the light-emitting element, preferably in a light-emitting layer or in an electron-transporting layer.Type: GrantFiled: March 25, 2010Date of Patent: December 23, 2014Assignee: Toray Industries, Inc.Inventors: Yohei Nakano, Kazunori Sugimoto, Kazumasa Nagao, Daisaku Tanaka, Tsuyoshi Tominaga
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Patent number: 8916274Abstract: An organic light emitting device that obtains stable image qualities through prevention of any significant decrease in brightness at high temperature. The organic light emitting device includes an anode; a cathode facing the anode; an organic emitting layer interposed between the anode and the cathode; an electron transport layer interposed between the organic emitting layer and the cathode and comprising an alkali metal compound or an alkali earth metal compound; and a buffer layer interposed between the organic emitting layer and the electron transport layer.Type: GrantFiled: June 24, 2008Date of Patent: December 23, 2014Assignee: Samsung Display Co., Ltd.Inventors: Eun-Jung Lee, Ja-Hyun Im, Tae-Kwang Sung, Kwan-Hee Lee
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Patent number: 8911883Abstract: An organic-inorganic hybrid electroluminescent device having a semiconductor nanocrystal pattern prepared by producing a semiconductor nanocrystal film using semiconductor nanocrystals, where the nanocrystal is surface-coordinated with a compound containing a photosensitive functional group, exposing the film through a mask and developing the exposed film.Type: GrantFiled: July 17, 2008Date of Patent: December 16, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Jong Jin Park, Eun Joo Jang, Shin Ae Jun, Tae Kyung Ahn, Sung Hun Lee
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Patent number: 8911881Abstract: An organic light-emitting device is provided. The organic light-emitting device comprises a first electrode, a second electrode, and a light-emitting layer interposed between the first electrode and the second electrode. The device further comprises of a phosphorescent dopant and a phosphorescent host that includes at least two hole transport materials. The mixed phosphorescent host materials increase energy transfer efficiency, thereby improving the efficiency and lifespan of the resulting organic light-emitting device.Type: GrantFiled: October 25, 2005Date of Patent: December 16, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jun-Yeob Lee, Min-Seung Chun, Yong-Joong Choi
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Patent number: 8911886Abstract: 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: August 30, 2013Date of Patent: December 16, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshihiro Iwakuma, Chishio Hosokawa, Hidetsugu Ikeda, Seiji Tomita, Takashi Arakane
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Patent number: 8911884Abstract: An organic light emitting device includes a substrate; a first electrode; a second electrode; and an organic layer including an emission layer between the first electrode and the second electrode. The organic layer includes a first intermediate layer including a first host and a first dopant, a second intermediate layer including the first dopant, and a third intermediate layer including a second host and the first dopant interposed between the first electrode and the emission layer. The organic light emitting device has a long lifetime.Type: GrantFiled: February 18, 2009Date of Patent: December 16, 2014Assignee: Samsung Display Co., Ltd.Inventors: Choon-Woo Lim, Kwan-Hee Lee, Kyung-Hoon Choi, Dong-Hun Kim
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Patent number: 8911882Abstract: The present invention provides a novel organic compound having excellent heat resistance. By using the novel organic compound, a light-emitting element and a light-emitting device which have excellent heat resistance can be provided. A stilbene derivative expressed by the general formula (1) is provided. Since the stilbene derivative expressed by the general formula (1) has high glass transition point, when it is used for a light-emitting element, the light-emitting element, and a light-emitting device using the light-emitting element which have excellent heat resistance can be obtained. Further, since the stilbene derivative expressed by the general formula (1) has good light emission efficiency; therefore, when it is used for a light emitting element, a light emitting element and a light emitting device which consumes less power can be obtained.Type: GrantFiled: September 20, 2007Date of Patent: December 16, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Masakazu Egawa
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Patent number: 8906520Abstract: A sulfonated polymer comprising a 3-substituted fused thienothiophene repeat unit, a composition comprising the polymer, a method of making the polymer, and a device comprising the polymer. The polymers can be used in hole injection or hole transport layers, or other applications in organic electronic devices.Type: GrantFiled: June 9, 2009Date of Patent: December 9, 2014Assignee: Solvay USA, Inc.Inventor: Venkataramanan Seshadri
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Patent number: 8907559Abstract: There is provided a light emitting device which enables a color display with good color balance. A triplet compound is used for a light emitting layer of an EL element that emits red color, and a singlet compound is used for a light emitting layer of an EL element that emits green color and a light emitting layer of an EL element that emits blue color. Thus, an operation voltage of the EL element emitting red color may be made the same as the EL element emitting green color and the EL element emitting blue color. Accordingly, the color display with good color balance can be realized.Type: GrantFiled: March 6, 2014Date of Patent: December 9, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Shunpei Yamazaki
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Patent number: 8906518Abstract: A substance having high excitation energy is provided. In particular, a substance having high triplet excitation energy is provided. Further, a light-emitting element, a light-emitting device, and an electronic device each having high emission efficiency and low driving voltage are provided. A triazole derivative to which an amino group is bonded is provided. In addition, a light-emitting element, a light-emitting device, and an electronic device each including the triazole derivative to which the amino group is bonded are provided.Type: GrantFiled: December 11, 2008Date of Patent: December 9, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hiroko Nomura, Sachiko Kawakami, Nobuharu Ohsawa, Satoshi Seo
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Patent number: 8906265Abstract: A semiconductor nanocrystal capable of emitting blue light upon excitation. Also disclosed are devices, populations of semiconductor nanocrystals, and compositions including a semiconductor nanocrystal capable of emitting blue light upon excitation. In one embodiment, a semiconductor nanocrystal capable of emitting blue light including a maximum peak emission at a wavelength not greater than about 470 nm with a photoluminescence quantum efficiency greater than about 65% upon excitation. In another embodiment, a semiconductor nanocrystal includes a core comprising a first semiconductor material comprising at least three chemical elements and a shell disposed over at least a portion of the core, the shell comprising a second semiconductor material, wherein the semiconductor nanocrystal is capable of emitting blue light with a photoluminescence quantum efficiency greater than about 65% upon excitation.Type: GrantFiled: March 25, 2013Date of Patent: December 9, 2014Assignee: QD Vision, Inc.Inventors: Craig Breen, Jonathan S. Steckel, Dorai Ramprasad
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Patent number: 8906517Abstract: An organic electroluminescence device including a lower electrode disposed on a substrate, an organic layer having at least a light emission layer and disposed above the lower electrode, and upper electrode having a transparent conductive film and disposed above the organic layer, in which the device has an electron injecting layer between the organic layer and the upper electrode. The electron injecting layer has a buffer layer comprising an insulative material and a mixed layer comprising an organic material that has an electron transporting property and a metal material that has an electron injecting property.Type: GrantFiled: April 3, 2006Date of Patent: December 9, 2014Assignee: Sony CorporationInventors: Tetsuo Shibanuma, Eisuke Matsuda, Yasunori Kijima, Hirofumi Nakamura, Shigeyuki Matsunami
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Patent number: 8906521Abstract: Disclosed is a useful organic EL device which comprises a phosphorescent light-emitting layer and is endowed with improved luminous efficiency and high driving stability. Also disclosed is a hole-transporting material suitable for use in the phosphorescent light-emitting device. The hole-transporting material is a triptycene derivative which has substituents at the 9- and 10-positions and is substituted with an aromatic group containing at least one diarylamino group (—ArNAr2). The organic EL device contains the triptycene derivative in at least one organic layer selected from the group of a phosphorescent light-emitting layer, a hole-transporting layer, an electron-blocking layer, and an exciton-blocking layer. The diarylamino group (—NAr2) may be fused to form an aromatic heterocyclic group such as a carbazolyl group.Type: GrantFiled: January 15, 2010Date of Patent: December 9, 2014Assignee: Nippon Steel & Sumikin Chemical Co., Ltd.Inventors: Mitsuru Suda, Takahiro Kai, Toshihiro Yamamoto
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Patent number: 8900727Abstract: A condensed polycyclic compound represented by the following general formula [1], wherein, in General Formula [1], R1, R6, R7, and R12 each are independently selected from a hydrogen atom, an alkyl group, or an aryl group, the aryl group may have an alkyl group and a fluorine atom as a substituent, and R2 to R5 and R8 to R11 each are independently selected from a hydrogen atom and an alkyl group.Type: GrantFiled: August 24, 2012Date of Patent: December 2, 2014Assignee: Canon Kabushiki KaishaInventors: Yosuke Nishide, Naoki Yamada, Akihito Saitoh
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Patent number: 8900728Abstract: It is an object of the present invention to provide a material which is excellent in a hole injecting property and a hole transporting property, and to provide a light emitting element and a light emitting device using a material which is excellent in a hole injecting property and a hole transporting property. The present invention provides a carbazole derivative represented by a general formula (1). The carbazole derivative according to the present invention is excellent in the hole injecting property. By using the carbazole derivative according to the present invention as a hole injecting material for a hole injecting layer of a light emitting element, a driving voltage can be reduced. In addition, a lower driving voltage, improvement of the luminous efficiency, a longer life time, and higher reliability can be realized by applying the material to a light emitting element or a light emitting device.Type: GrantFiled: April 18, 2013Date of Patent: December 2, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Harue Nakashima, Sachiko Kawakami, Daisuke Kumaki
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Patent number: 8900725Abstract: A dendrimer and an organic light-emitting device including an organic layer having the dendrimer.Type: GrantFiled: July 8, 2011Date of Patent: December 2, 2014Assignee: Samsung Display Co., Ltd.Inventors: Yoon-Hyun Kwak, Jeoung-In Yi, Seung-Gak Yang, Hee-Yeon Kim, Jae-Yong Lee
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Patent number: 8901812Abstract: It is an object of the present invention to provide a light-emitting element with high light emission efficiency. It is another object of the present invention to provide a light-emitting element with a long lifetime. A light-emitting device is provided, which includes a light-emitting layer, a first layer, and a second layer between first electrode and a second electrode, wherein the first layer is provided between the light-emitting layer and the first electrode, the second layer is provided between the light-emitting layer and the second electrode, the first layer is a layer for controlling the hole transport, the second layer is a layer for controlling the electron transport, and a light emission from the light-emitting layer is obtained when voltage is applied to the first electrode and the second electrode so that potential of the first electrode is higher than potential of the second electrode.Type: GrantFiled: February 22, 2013Date of Patent: December 2, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Satoshi Seo, Tsunenori Suzuki, Kaoru Ikeda
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Patent number: 8900724Abstract: A monobenzochrysene derivative shown by the following formula (1): wherein R1 to R14 are independently a hydrogen atom or a substituent, and at least one of R1 to R14 is a substituted or unsubstituted aryl group having 6 to 50 ring carbon atoms which does not contain an anthracene skeleton and a benzo[g]chrysene skeleton or a substituted or unsubstituted heteroaryl group having 5 to 50 ring carbon atoms which does not contain an anthracene skeleton and a benzo[g]chrysene skeleton, excluding the case where R8 and R9 are unsubstituted phenyl groups and R1 to R7 and R10 to R14 are hydrogen atoms and the case where R9 is an unsubstituted phenyl group and R1 to R8 and R10 to R14 are hydrogen atoms.Type: GrantFiled: November 13, 2008Date of Patent: December 2, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventor: Masahiro Kawamura
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Patent number: 8901540Abstract: A compound for an organic thin film transistor having a structure represented by the following formula (1): wherein R1 and R2, and R3 and R4 are respectively combined with each other to form an aromatic hydrocarbon ring having 6 to 60 carbon atoms or an aromatic heterocyclic ring having 3 to 60 carbon atoms; the ring being fused to the ring to which the groups are bonded, whereby the structure of the formula (1) has 5 or more aromatic rings that are fused; and the fused rings formed by R1 and R2, and R3 and R4 each may have a substituent.Type: GrantFiled: August 20, 2009Date of Patent: December 2, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Masatoshi Saito, Yuki Nakano, Hiroaki Nakamura, Hirofumi Kondo
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Patent number: 8901298Abstract: The present invention relates to condensed aromatic compounds with multiple ring bridging of the general formulae (1), (2), (3), (4) and (5). The invention furthermore relates to the use of the compounds according to the invention in an organic electronic device and to a process for the preparation of the compounds according to the invention. The invention furthermore relates to an electronic device which comprises the compounds according to the invention.Type: GrantFiled: October 1, 2009Date of Patent: December 2, 2014Assignee: Merck Patent GmbHInventors: Amir Hossain Parham, Christof Pflumm, Holger Heil, Arne Buesing
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Patent number: 8900726Abstract: Provided is an organic electroluminescent element which includes a pair of electrodes composed of a positive electrode and a negative electrode, with at least one of the electrodes being transparent or semi-transparent, and an organic compound layer interposed between the pair of electrodes and containing one or more charge transporting polyesters represented by the following formula (I) [in the formula (I), A1 represents at least one selected from structures represented by the following formula (II); and in the formula (II), X represents a group represented by the following formula (III)]:Type: GrantFiled: March 7, 2012Date of Patent: December 2, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Hidekazu Hirose, Takeshi Agata, Katsuhiro Sato
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Patent number: 8895156Abstract: An organic light emitting diode that can improve a driving voltage and emission efficiency includes a first electrode, an organic layer formed on the first electrode and including an emitting layer and an electron transport layer that is doped with an organic n-type impurity, and a second electrode formed on the organic layer. The electron transport layer is made of C60. An organic light emitting display includes the organic light emitting diode.Type: GrantFiled: March 16, 2007Date of Patent: November 25, 2014Assignee: Samsung Display Co., Ltd.Inventors: Tae-Shick Kim, Ok-Keun Song, Hye-In Jeong, Young-Mo Koo
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Patent number: 8895154Abstract: Provided is an organic electroluminescent device in which an organic thin film layer comprising a single layer or plural layers comprising a phosphorescence light-emitting layer containing at least a host material and a phosphorescent organic metal complex is interposed between a cathode and an anode, wherein the total of the halogen element mass concentrations of bromine, iodine and chlorine which are contained as impurities in the host material constituting the light-emitting layer described above is 50 ppm or less. It has a high emission luminance, a high luminous efficiency and a long life.Type: GrantFiled: March 1, 2005Date of Patent: November 25, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Toshihiro Iwakuma, Hiroya Yasuda, Kiyoshi Ikeda, Keiko Yamamichi, Takashi Arakane, Chishio Hosokawa
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Patent number: 8895159Abstract: An aromatic amine derivative with a specific structure having a carbazole skeleton to which a diarylamino group bonds via a bonding group. An organic electroluminescence device which is composed of one or more organic thin film layers including at least one light emitting layer sandwiched between a cathode and an anode, wherein at least one of the organic thin film layers contains the aromatic amine derivative singly or as its mixture component. Organic electroluminescence devices with enhanced efficiency of light emission and a compound realizing the devices are provided.Type: GrantFiled: January 25, 2013Date of Patent: November 25, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yumiko Mizuki, Masahiro Kawamura, Nobuhiro Yabunouchi
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Patent number: 8895157Abstract: Optionally substituted bispyridinylbenzene compounds useful in light-emitting devices include, but are not limited to, 1,3-bis(5-(9H-carbazol-9-yl)pyridin-3-yl)benzene and 9,9?-(5,5?-(5-methyl-1,3-phenylene)bis(pyridine-5,3-diyl))bis(9H-carbazole).Type: GrantFiled: January 27, 2012Date of Patent: November 25, 2014Assignee: Nitto Denko CorporationInventors: Shijun Zheng, Rebecca Romero, David T. Sisk
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Patent number: 8895155Abstract: Organic light-emitting diode comprising a lower electrode and an upper electrode, an organic electroluminescent layer and at least one doped organic layer in contact with one of said electrodes. According to the invention, the doping level of this organic layer is higher at the interface with the electrode than in the core of this layer. Thanks to the invention, the luminous efficiency of the diode is very substantially improved.Type: GrantFiled: November 24, 2005Date of Patent: November 25, 2014Assignee: Thomson LicensingInventors: Salvatore Cina, Benoit Racine, Christophe Fery
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Patent number: 8890404Abstract: An organic electroluminescence device of the present invention adapts a new concept in its configuration to improve its efficiency in addition to obtain a high reliability and good yielding. The organic electroluminescent device having an electroluminescent film containing an organic material capable of causing an electroluminescence and being arranged between a first electrode and a second electrode, includes: a carrier generation layer, which is a floating electrode, is embodied in the electroluminescent film; an insulting film between the first electrode and the electroluminescent film, and an insulating film between the second electrode and the electroluminescent film, wherein the organic electroluminescent device is driven by an alternating current bias.Type: GrantFiled: December 22, 2012Date of Patent: November 18, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Tetsuo Tsutsui
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Patent number: 8889265Abstract: A copolymer having two or more repeating units selected from the group consisting of arylene groups, divalent heterocyclic groups and divalent aromatic amine groups wherein the copolymer has, on at least one of molecular chain ends, a monovalent heterocyclic group, a monovalent group derived from a heterocyclic group coordinated metal complex, and an aromatic end group selected from aryl groups having a formula weight of 90 or more, and the copolymer shows fluorescence in the solid state and has a polystyrene-reduced weight-average molecular weight of 103 to 108.Type: GrantFiled: July 18, 2003Date of Patent: November 18, 2014Assignee: Sumitomo Chemical Company, LimitedInventors: Tomoyuki Suzuki, Takanobu Noguchi, Chizu Sekine
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Patent number: 8889271Abstract: Disclosed are a novel-structural compound including a 5-membered heterocycle, an organic electronic device using the same, and a terminal thereof.Type: GrantFiled: April 30, 2010Date of Patent: November 18, 2014Assignees: Duksan High Metal Co., Ltd., Samsung Mobile Display Co., Ltd.Inventors: Junghwan Park, Daesung Kim, Jungcheol Park, Kiwon Kim, Jinuk Ju, Jangyeol Baek, Soungyun Mun, Yongwook Park, Hwasoon Jung, Wonsam Kim, Jihun Byun, Sungjin Park, Eunkyung Kim, Daehyuk Choi, Dongha Kim, Hansung Yu, Kwanhee Lee, Taeshick Kim, Daeyup Shin, Mikyung Kim, Dongheon Kim
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Patent number: 8889268Abstract: An organic electroluminescence element that includes a pair of electrodes and an organic light emitting functional layer.Type: GrantFiled: October 22, 2010Date of Patent: November 18, 2014Assignee: Sony CorporationInventors: Ichinori Takada, Tadahiko Yoshinaga, Emiko Kambe, Shigeyuki Matsunami, Yasunori Kijima
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Patent number: 8883326Abstract: A composition comprising india stabilized gadolinia wherein the india stabilized gadolinia is an oxide with a direct substitution of the indium ion for the gadolinia ion resulting in a compound with the formula InxGd2-xO3.Type: GrantFiled: March 13, 2013Date of Patent: November 11, 2014Assignee: The United States of America, as represented by the Secretary of the NavyInventors: Syed B Qadri, Guillermo R. Villalobos, Jasbinder S. Sanghera
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Patent number: 8883323Abstract: An organic electroluminescence device that includes an anode, an emitting layer that includes a host and a dopant, a blocking layer, an electron injecting layer, and a cathode where the blocking layer includes an aromatic heterocyclic derivative, the triplet energy ETb (eV) of the blocking layer is larger than a triplet energy ETh (eV) of the host, and the affinity Ab (eV) of the blocking layer and an affinity Ae (eV) of the electron injecting layer satisfy a relationship of Ae?Ab<0.2.Type: GrantFiled: November 22, 2011Date of Patent: November 11, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Yuichiro Kawamura, Hiroyuki Saito, Hitoshi Kuma, Masahiro Kawamura, Yukitoshi Jinde, Hirokatsu Ito, Takayasu Sado, Sayaka Mizutani
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Patent number: 8883325Abstract: In OLEDs, improved efficiency is obtained by compounds which can form inter alia electron injection layers of the formula (I) wherein R1 is a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with one or more C1-C4 alkyl, alkoxy or cyano; R2 and R3 together form a 1-5 ring aryl (including polycyclic), aralkyl or heteroaryl group which is optionally substituted with C1-C4 alkyl, alkoxy or cyano; R4 is hydrogen, C1-C4 alkyl or aryl; and Ar is monocyclic, bicyclic or tricyclic aryl or heteroaryl which is optionally substituted with one or more C1-C4-alkyl or alkoxy groups, or an oligomer thereof.Type: GrantFiled: April 27, 2012Date of Patent: November 11, 2014Assignee: Merck Patent GmbHInventors: Poopathy Kathirgamanathan, Yun Fu Chan
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Patent number: 8883322Abstract: Organometallic compounds comprising an imidazole carbene ligand having a N-containing ring fused to the imidazole ring are provided. In particular, the N-containing ring fused to the imidazole ring may contain one nitrogen atom or more than one nitrogen atom. These compounds may demonstrate high photoluminescent (PL) efficiency, Gaussian emission spectra, and/or short excited state lifetimes. These materials may be especially useful as blue phosphorescent emitters.Type: GrantFiled: March 8, 2011Date of Patent: November 11, 2014Assignee: Universal Display CorporationInventors: Yonggang Wu, Chuanjun Xia, James Fiordeliso, Suman Layek, Bert Alleyne, Alexey Borisovich Dyatkin, Nasrin Ansari, Scott Beers, Ed Barron, Jason Brooks
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Patent number: 8883324Abstract: Disclosed is an organic electroluminescence device in which an organic thin film which is composed of one or more layers including at least a light-emitting layer is interposed between a cathode and an anode. Since at least one layer of the organic thin film contains a novel aromatic amine derivative, which has an asymmetric structure wherein two different amine units are bonded through a linking group, by itself or as a component of a mixture, molecules are hardly crystallized, thereby improving the production yield of the organic electroluminescence device. This organic electroluminescence device has a long life.Type: GrantFiled: January 6, 2012Date of Patent: November 11, 2014Assignee: Idemitsu Kosan Co., Ltd.Inventors: Nobuhiro Yabunouchi, Hisayuki Kawamura
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Patent number: 8883320Abstract: A light emitting device comprising: an anode; a cathode; a light emissive layer located between the anode and the cathode, said light emissive layer comprising a charged metal complex for emitting light and a counterion or counterions with sufficient charge to balance the change on the charged metal complex; characterized in that the counterion or counterions are substantially immobile so (that light output from the device is immediate, provided that the combined charged metal complex and counterion do not have General Formula: (I) or (II); where C—N is a cyclometallated liquid.Type: GrantFiled: May 16, 2005Date of Patent: November 11, 2014Assignee: CDT Oxford Ltd.Inventors: Michael Frampton, Sophie Heidenhain, Annette Steudel, Jonthan N. G. Pillow, Scott Watkins, Nigel Male
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Patent number: 8878431Abstract: A light emitting device is provided which has a structure for lowering energy barriers at interfaces between layers of a laminate organic compound layer. A mixed layer (105) composed of a material that constitutes an organic compound layer (1) (102) and a material that constitutes an organic compound layer (2) (103) is formed at the interface between the organic compound layer (1) (102) and the organic compound layer (2) (103). The energy barrier formed between the organic compound layer (1) (102) and the organic compound layer (2) (103) thus can be lowered.Type: GrantFiled: April 29, 2013Date of Patent: November 4, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Satoshi Seo, Shunpei Yamazaki