Polycondensed Aromatic Or Heteroaromatic Compound (e.g., Pyrene, Perylene, Pentacene) (epo) Patents (Class 257/E51.049)
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Patent number: 7858211Abstract: An organic electroluminescent device, which has, between a pair of electrodes, at least one organic layer including a light-emitting layer, in which the organic layer contains a specific tetraphenylene compound, and in which the light-emitting layer contains a phosphorescent material; and a specific tetraphenylene compound that can be used in the device.Type: GrantFiled: November 20, 2008Date of Patent: December 28, 2010Assignee: Fujifilm CorporationInventors: Jun Ogasawara, Tatsuya Igarashi, Satoshi Sano
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Patent number: 7854998Abstract: The present organic EL devices have at least one luminescent layer and a cathode sequentially provided on their anode, which luminescent layer contains an electron-transporting material, a hole-transporting material, and a luminescent dopant. Preferably, an electron-transporting layer is further provided between the luminescent layer and the cathode. According to the present invention, organic EL devices can be provided giving improved whiteness, colour reproducibility, luminescent efficiency, and lifetime compared to conventional ones.Type: GrantFiled: May 11, 2005Date of Patent: December 21, 2010Assignee: Kabushiki Kaisha Toyota JidoshokkiInventors: Yoshiaki Nagara, Ichiro Yamamoto, Kenji Mori, Takanori Murasaki
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Patent number: 7851071Abstract: A novel derivative of heterocyclic compound having nitrogen atom with a structure made by bonding special groups to benzimidazole, a material for an organic electroluminescence (EL) device comprising the derivative of heterocyclic compound having nitrogen atom and an organic electroluminescence device comprising at least one organic compound layer containing a light emitting layer sandwiched between a pair of electrodes, wherein the device contains the derivative of heterocyclic compound having nitrogen atom. An organic EL device achieving elevation of luminance and of efficiency in light emission even under low driving voltage is obtainable by an employment of the derivative of heterocyclic compound having nitrogen atom for at least one layer composing organic compound layers of the EL device.Type: GrantFiled: January 27, 2004Date of Patent: December 14, 2010Assignee: Idemitsu Kosan Co., Ltd.Inventors: Hiroshi Yamamoto, Masahide Matsuura, Mineyuki Kubota, Masahiro Kawamura
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Patent number: 7842945Abstract: An object is to provide a novel anthracene derivative. Another object is to provide a light-emitting element with high luminous efficiency. Yet another object is to provide a light-emitting element with a long lifetime. Still another object is to provide a light-emitting device and an electronic device having a long lifetime by using the light-emitting elements of the present invention. The anthracene derivative represented by General Formula (1) is provided. The ability of the anthracene derivative represented by General Formula (1) to exhibit high luminous efficiency allows the production of a light-emitting element with high luminous efficiency and a long lifetime.Type: GrantFiled: April 24, 2007Date of Patent: November 30, 2010Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Masakazu Egawa, Harue Nakashima, Sachiko Kawakami, Tsunenori Suzuki, Ryoji Nomura
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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: 7816172Abstract: An organic thin-film transistor having a higher carrier-mobility, a method of fabricating the organic thin-film transistor and an organic thin-film device including the organic thin-film transistor are provided. In an organic thin-film transistor having an organic semiconductor layer, the organic semiconductor layer contains a fluorinated acene compound which is represented by a formula of C4n+2F2n+4, wherein n is an integer of 2 or greater. The fluorinated acene compound is preferably tetradecafluoropentacene or dodecafluoronaphthacene.Type: GrantFiled: February 17, 2005Date of Patent: October 19, 2010Assignee: Kanto Denka Kogyo Co., Ltd.Inventors: Youji Inoue, Shizuo Tokito, Masafumi Kobayashi, Yuan Gao
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Patent number: 7800102Abstract: The organic TFT includes: a gate electrode; source and drain electrodes insulated from the gate electrode; an organic semiconductor layer insulated from the gate electrode and electrically connected to the source and drain electrodes; an insulating layer insulating the gate electrode from the source and drain electrodes and the organic semiconductor layer; and a self-assembly monolayer (SAM) included between the insulating layer and the organic semiconductor layer. A compound forming the SAM has at least one terminal group selected from the group consisting of an unsubstituted or substituted C6-C30 aryl group and an unsubstituted or substituted C2-C30 heteroaryl group. The organic TFT is formed by forming the above-described layers and forming the SAM on the insulating layer before the organic semiconductor layer and source and drain electrodes are formed.Type: GrantFiled: October 18, 2006Date of Patent: September 21, 2010Assignee: Samsung Mobile Display Co., Ltd.Inventors: Jin-Seong Park, Taek Ahn, Min-Chul Suh
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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
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Patent number: 7754526Abstract: A method for making a thin film transistor, the method comprising the steps of: providing a growing substrate; applying a catalyst layer on the growing substrate; heating the growing substrate with the catalyst layer in a furnace with a protective gas therein, supplying a carbon source gas and a carrier gas at a ratio ranging from 100:1 to 100:10, and growing a carbon nanotube layer on the growing substrate; forming a source electrode, a drain electrode, and a gate electrode; and covering the carbon nanotube layer with an insulating layer, wherein the source electrode and the drain electrode are electrically connected to the single-walled carbon nanotube layer, the gate electrode is opposite to and electrically insulated from the single-walled carbon nanotube layer.Type: GrantFiled: April 2, 2009Date of Patent: July 13, 2010Assignees: Tsinghua University, Hon Hai Precision Industry Co., Ltd.Inventors: Kai-Li Jiang, Qun-Qing Li, Shou-Shan Fan
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Patent number: 7745819Abstract: The present invention provides an organic electronic device using the compound of the formula (1) and a pyrene derivative having a new structure.Type: GrantFiled: June 27, 2006Date of Patent: June 29, 2010Assignee: LG Chem. Ltd.Inventors: Dong Hoon Lee, Kong Kyeom Kim, Jae Soon Bae, Dae Woong Lee, Jung Bum Kim
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Patent number: 7737627Abstract: The present invention relates to an organic electroluminescent (OEL) compound that comprises at least one fluorene derivative and at least one carbazole derivative. The compound has good electrical properties, light emitting properties and charge transport ability, and thus is suitable as a host material suitable for fluorescent and phosphorescent dopants of all colors including red, green, blue, white, etc., and as a charge transport material. An OEL display device that uses an organic layer that includes the OEL compound has a high efficiency, a low voltage, a high luminance, and a long lifespan because it has superior current density.Type: GrantFiled: April 4, 2005Date of Patent: June 15, 2010Assignee: Samsung Mobile Display Co., Ltd.Inventors: Seok-Hwan Hwang, Seok-Jong Lee, Young-Kook Kim, Seung-Gak Yang, Hee-Yeon Kim
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Patent number: 7733012Abstract: A light-emitting device comprising a pair of electrodes and a light-emitting layer or a plurality of organic layers comprising a light-emitting layer disposed therebetween, the light-emitting layer or at least one of a plurality of organic layers comprising the light-emitting layer comprising at least one compound represented by the following general formula (1): wherein each of Ar11, Ar12, Ar13, Ar14 and Ar15 represents an aryl group or a heteroaryl group; Ar represents a benzene ring, a naphthalene ring, a phenanthrene ring or an anthracene ring; at least one of Ar, Ar11, Ar12, Ar13, Ar14 and Ar15 is a condensed aryl group, a condensed or uncondensed heteroaryl group or a group comprising a condensed aryl group or a condensed or uncondensed heteroaryl group; Ar11, Ar12, Ar13, Ar14 and Ar15 are not bonded to each other to form a ring; R11 represents a substituent; and n11 represents an integer of 0 or more.Type: GrantFiled: February 21, 2008Date of Patent: June 8, 2010Assignee: FUJIFILM CorporationInventors: Tatsuya Igarashi, Xuepeng Qui
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Patent number: 7733009Abstract: An electroluminescent device comprises a cathode, an anode, and has therebetween a light emitting layer (LEL), the device further containing an electron transport layer (ETL) on the cathode side of the LEL and an organic electron injection layer (EIL) contiguous to the ETL on the cathode side, wherein the ETL contains a monoanthracene compound bearing aromatic groups in the 2-, 9-, and 10-positions.Type: GrantFiled: April 27, 2006Date of Patent: June 8, 2010Assignee: Global OLED Technology LLCInventors: Denis Y. Kondakov, Scott R. Conley, Kevin P. Klubek, J. Ramon Vargas
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Publication number: 20100133516Abstract: Provided are a flexible and transparent carbon nano tube (CNT) thin film transistor using a degradable polymer substrate, and a display adapting the CNT thin film transistor. The polymer substrate is formed of a polymer material that is naturally degraded, and a CNT channel, where a semiconductive CNT is dispersed on a transparent organic material, is prepared on the polymer substrate. Source and drain electrodes, where a conductive CNT is ejected on a transparent organic material, are connected to both sides of the CNT channel. A gate, where a conductive CNT is dispersed on a transparent organic material, is disposed on or below the CNT channel, and a gate insulation layer including a transparent organic material is disposed between the CNT channel and the gate.Type: ApplicationFiled: February 17, 2009Publication date: June 3, 2010Applicant: KOREAN UNIVERSITY INDUSTRIAL & ACADEMIC COLLABORATION FOUNDATIONInventors: Cheoljin LEE, Sangmin PARK, Sunkug KIM
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Publication number: 20100135937Abstract: Nanocrystalline forms of metal oxides, including binary metal oxide, perovskite type metal oxides, and complex metal oxides, including doped metal oxides, are provided. Methods of preparation of the nanocrystals are also provided. The nanocrystals, including uncapped and uncoated metal oxide nanocrystals, can be dispersed in a liquid to provide dispersions that are stable and do not precipitate over a period of time ranging from hours to months. Methods of preparation of the dispersions, and methods of use of the dispersions in forming films, are likewise provided. The films can include an organic, inorganic, or mixed organic/inorganic matrix. The films can be substantially free of all organic materials. The films can be used as coatings, or can be used as dielectric layers in a variety of electronics applications, for example as a dielectric material for an ultracapacitor, which can include a mesoporous material. Or the films can be used as a high-K dielectric in organic field-effect transistors.Type: ApplicationFiled: September 24, 2009Publication date: June 3, 2010Applicant: The Trustees of Columbia University in the City of New YorkInventors: Stephen O'Brien, Limin Huang, Zhuoying Chen, Ioannis Kymissis, Zhang Jia
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Patent number: 7718997Abstract: Tetrasubstituted coronenes are provided. Also provided are electronic devices in which the active layer includes a tetrasubstituted coronene.Type: GrantFiled: October 13, 2006Date of Patent: May 18, 2010Assignee: E. I. du Pont de Nemours and CompanyInventors: Alex Sergey Ionkin, Ying Wang
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Patent number: 7714323Abstract: The present invention relates to an organic thin film transistor which includes an organic layer comprising an organic compound facilitating the ohmic contact between a semi-conducting layer and electrodes and serving as the semi-conducting layer. The organic thin film transistor according to the present invention has excellent electric contact between the semiconductor layer and the source electrode/drain electrode, and thus can be widely used as components for electric/electronic devices. As a result, as the materials for the source electrode or the drain electrode in the organic thin film transistor, materials which are less expensive and excellent in processibility though they have a low work function as the materials can be used.Type: GrantFiled: June 27, 2006Date of Patent: May 11, 2010Assignee: LG Chem. Ltd.Inventors: In Ho Hwang, Hyeon Choi, Min Jeong Lee, Dong Hoon Lee, Kong Kyeom Kim, Jae Soon Bae, Dae Woong Lee, Jung Bum Kim
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Patent number: 7709104Abstract: There is provided an aminoanthryl derivative-substituted pyrene compound represented by the following general formula (1). The compound is useful as a compound for an organic light-emitting device exhibiting highly pure luminescent color, and an optical output with high efficiency, high luminance, and long life.Type: GrantFiled: November 17, 2005Date of Patent: May 4, 2010Assignee: Canon Kabushiki KaishaInventors: Akihito Saitoh, Keiji Okinaka, Naoki Yamada, Masataka Yashima, Akihiro Senoo, Kazunori Ueno
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Patent number: 7692191Abstract: A top-emitting organic light emitting device having an improved pixel electrode layout for decreasing photo-leakage of a thin film transistor and enhancing an aperture ratio is provided. In the top-emitting organic light emitting device, the pixel electrode is designed to have the maximum size allowed by a layout design rule. Further, the pixel electrode is formed to overlap all the thin film transistors below.Type: GrantFiled: January 6, 2006Date of Patent: April 6, 2010Assignee: Samsung Mobile Display Co., Ltd.Inventors: Won-Kyu Kwak, Kwan-Hee Lee
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Patent number: 7692184Abstract: A substrate having organic thin film capable of growing two dimensionally such organic thin film as C60 and a transistor using the same are constituted with a substrate (1) having organic thin film by sequentially depositing a buffer layer (3) and organic thin film (4) on the substrate (2), and with the buffer layer orienting the organic thin film (4). A layer easily oriented with the substrate (2) and the buffer layer (3) may be inserted between the substrate (2) and the buffer layer (3). A sapphire substrate as the substrate (2), pentacene or pentacene fluoride as the buffer layer (3), and C60 or rubrene as the organic thin film (4) may be used, thereby C60 or rubrene two dimensional thin film of high quality can be obtained. By using such a substrate (1) having organic thin film, a field effect transistor of high quality can be realized.Type: GrantFiled: March 24, 2005Date of Patent: April 6, 2010Assignee: Japan Science and Technology AgencyInventors: Hideomi Koinuma, Kenji Itaka, Mitsugu Yamashiro
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Publication number: 20100073056Abstract: A transistor includes a first semiconductor layer associated with a first electrode; a second semiconductor layer associated with a second electrode; and a discontinuous layer between the first and second semiconductor layer. The discontinuous layer has a plurality of openings being formed on a nonuniform organic surface. Applications of the transistor include an inverter that operates at low supply voltage and high frequency.Type: ApplicationFiled: September 23, 2009Publication date: March 25, 2010Applicant: Academia SinicaInventors: Chih-Wei Chu, Shiau-Shin Cheng
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Patent number: 7674533Abstract: Dibenzoanthracene derivatives are each substituted by an amino compound group at least one of 9-position and 14-position of a dibenzo[a,c]anthracene skeleton and represented by the following formula (1) or (2): wherein X1, X2 and X each independently represents a substituted or unsubstituted arylene or divalent heterocyclic group; A, B, C and D each independently represents a substituted or unsubstituted alkyl, aryl heterocyclic group, and between the adjacent groups, may be fused together to form rings; and Y1 to Y12 and R1 each independently represents a hydrogen atom, a halogen atom, an alkoxy group, or a substituted or unsubstituted alkyl, aryl or heterocyclic group, and, when Y1 to Y12 and R1 are other than a hydrogen atom or a halogen atom, Y1 to Y12 and R1 may be fused together between the adjacent groups to form rings.Type: GrantFiled: October 17, 2006Date of Patent: March 9, 2010Assignee: Sony CorporationInventors: Yukinari Sakamoto, Yoshihisa Miyabayashi, Tadahiko Yoshinaga
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Publication number: 20100051926Abstract: An anthracene derivative represented by general formula (1) is provided. In the formula, Ar1, Ar3, Ar5, and Ar6 independently represent an aryl group having 6 to 13 carbon atoms, Ar2 and Ar4 independently represent an arylene group having 6 to 13 carbon atoms, and R1 to R8 independently represent hydrogen or an alkyl group having 1 to 4 carbon atoms. Ar1 to Ar6 may independently have a substituent. When Ar1 to Ar6 independently have two or more substituents, the substituents may be bonded to each other to form a ring. When a carbon atom of Ar1 to Ar6 has two substituents, the substituents may be bonded to each other to form a spiro ring.Type: ApplicationFiled: August 31, 2009Publication date: March 4, 2010Inventors: Sachiko Kawakami, Nobuharu Ohsawa, Satoshi Seo
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Patent number: 7663149Abstract: An organic compound film is composed of a hole transporting region, a first mixed region, a light emitting region, a second mixed region, and an electron transporting region that are connected to one another. With the organic compound film thus structured, the blue organic light emitting device obtained is free from interfaces between layers which are present in the conventional laminate structure. When pigment doping is added to this device structure, a white organic light emitting device is obtained. A blue or white organic light emitting device having high light emission efficiency and long lifetime is provided by this method. When this organic light emitting device is combined with color conversion layers or color filters, a full color display device that consumes less power and lasts long can be obtained.Type: GrantFiled: September 24, 2007Date of Patent: February 16, 2010Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Satoshi Seo, Shunpei Yamazaki
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Patent number: 7659139Abstract: A method for destruction of metallic carbon nanotubes is provided. The method includes irradiating a mixture of semiconducting carbon nanotubes and metallic carbon nanotubes with energy beams (such as laser light), thereby selectively destroying metallic carbon nanotubes or semiconducting carbon nanotubes. The energy beams have energy components for resonance absorption by the metallic carbon nanotubes or semiconducting carbon nanotubes.Type: GrantFiled: July 25, 2006Date of Patent: February 9, 2010Assignee: Sony CorporationInventor: Houjin Huang
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Patent number: 7651789Abstract: To provide an organic electroluminescent device which suppresses crystallization of a material to be used in an organic electroluminescent device and which is good in luminous characteristics, device drive durability and storage stability, the organic electroluminescent device has at least one organic layer including a light emitting layer between a pair of electrodes, wherein the light emitting layer contains a compound represented by formula (1) defined in the specification and a light emitting material.Type: GrantFiled: February 18, 2005Date of Patent: January 26, 2010Assignee: Fujifilm CorporationInventors: Jun Ogasawara, Masayuki Mishima
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Patent number: 7649077Abstract: The present invention relates to polymers comprising diazine, especially pyrimidine, containing repeating units. Optical devices, comprising the polymers of the present invention, can show significant advantages in color purity, device efficiency and/or operational lifetime. In addition, the polymers can have good solubility characteristics and relatively high glass transition temperatures, which facilitates their fabrication into coatings and films that are relatively thin, thermally stable, and relatively free of defects.Type: GrantFiled: October 21, 2003Date of Patent: January 19, 2010Assignee: Ciba Specialty Chemicals CorporationInventors: Michael Robert Craig, Jonathan Rogers, Thomas Schäfer
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Patent number: 7635946Abstract: To provide an organic electroluminescent device having excellent durability and having high luminous efficiency and luminance, the organic electroluminescent device includes an organic compound layer containing a hole transport layer, a light emitting layer, a block layer, and an electron transport layer between a pair of electrodes, wherein the block layer contains an electron transport material and an electrically inactive organic compound capable of being subjected to dry film formation and having an energy difference Eg between highest occupied molecular orbital and lowest unoccupied molecular orbital of 4.0 eV or more.Type: GrantFiled: February 25, 2005Date of Patent: December 22, 2009Assignee: Fujifilm CorporationInventors: Masayuki Mishima, Jun Ogasawara
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Patent number: 7598666Abstract: An organic EL device is provided which is capable of providing high luminance and high luminous efficiency. In an organic EL device, a hole injecting electrode lies on a glass substrate, and a hole injecting layer, a hole transporting layer, and a light emitting layer are sequentially formed thereon. An electron injecting electrode lies on the light emitting layer. The light emitting layer contains a host material, a light emitting dopant, and a first light-emission assisting dopant. The first light-emission assisting dopant is composed of a rubrene derivative.Type: GrantFiled: June 4, 2002Date of Patent: October 6, 2009Assignee: Sanyo Electric Co., Ltd.Inventors: Yuji Hamada, Tsuyoshi Tsujioka
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Publication number: 20090236592Abstract: A liquid crystal display structure is provided. The liquid crystal display structure includes a pixel region and a thin film transistor on the substrate. The thin film transistor is adjacent to the pixel region and includes a gate electrode; a gate insulating layer having a top surface; a source electrode and a drain electrode at the top surface of the gate insulating layer; a semiconductor layer disposed at the top surface of the gate insulating layer, the semiconductor layer between the source electrode and the drain electrode defining a channel region, the semiconductor layer including a small molecule organic semiconductor material; and a first passivation layer covering the channel region, a top surface of the first passivation layer coinciding with or being below a top surface of each of the source electrode and the drain electrode.Type: ApplicationFiled: June 3, 2009Publication date: September 24, 2009Inventors: Hyun-Sik SEO, Seung-Han Paek, Nack-Bong Choi
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Patent number: 7592414Abstract: The invention provides low molecular weight or polymeric organic materials in which at least one hydrogen atom is replaced by a group of the formula (A) where R is alkyl group, alkoxyalkyl group, alkoxy group, thioalkoxy group, aryl group or alkenyl group, in each of which one or more hydrogen atoms may be replaced and one or more nonadjacent carbon atoms may be replaced. Z is —O—, —S—, —CO—, —COO—, —O—CO— or a bivalent group —(CR1R2)n— in which R1 and R2 are hydrogen, alkyl, alkoxy, alkoxyalkyl or thioalkoxy group, aryl or alkenyl, in each of which one or more hydrogen atoms may be replaced and one or more nonadjacent carbon atoms may be replaced, and n is an integer from 1 to 20. X is a bivalent group —(CR1R2)n— and, with the proviso that the number of these A groups is limited by the maximum number of available substitutable hydrogen atoms.Type: GrantFiled: August 1, 2001Date of Patent: September 22, 2009Assignee: Merck Patent GmbHInventors: Klaus Meerholz, Michael Bayerl, Florian Bielefeldt, Thomas Braig, Markus Gross, David Müller, Oskar Nuyken, Hubert Spreitzer
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Patent number: 7588959Abstract: There is provided a method for producing a field effect transistor with a high field-effect mobility using a simple method for forming an organic semiconductor layer. A method for producing an organic field effect transistor comprising an organic semiconductor layer, comprising a step of forming the organic semiconductor layer by the photodecomposition of a bicyclic compound containing in a molecule thereof at least one bicyclic ring represented by formula (1): wherein R1 and R3 each denotes a group for forming an aromatic ring or a heteroaromatic ring which may have a substituent, together with a group to be bonded to R1 or R3; R2 and R4 each denotes a hydrogen atom, an alkyl group, an alkoxy group, an ester group or a phenyl group; and X is a leaving group which denotes carbonyl group or —N?.Type: GrantFiled: February 27, 2004Date of Patent: September 15, 2009Assignee: Canon Kabushiki KaishaInventors: Hajime Miyazaki, Daisuke Miura, Tomonari Nakayama, Hidemitsu Uno, Noboru Ono
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Patent number: 7585574Abstract: Provided are a pyrene derivative of a specified structure and an organic electroluminescence device including an organic thin film layer formed of one or multiple layers including at least a light emitting layer, the organic thin film layer being interposed between a cathode and an anode, in which at least one layer of the organic thin film layer contains the pyrene derivative alone or as a component of mixture. Thus, there are provided an organic electroluminescence device capable of obtaining long-life blue light emission with high luminous efficiency and a novel pyrene derivative for realization thereof.Type: GrantFiled: October 29, 2007Date of Patent: September 8, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Mitsunori Ito, Mineyuki Kubota
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Patent number: 7571894Abstract: This organic electroluminescence element has an organic light-emitting layer between a positive electrode and a negative electrode, wherein the organic light-emitting layer contains a 1,3,6,8-tetrasubstituted pyrene compound having a specific structure as an organic light-emitting layer forming material. Provided are an organic light-emitting layer forming material that emits blue light with a high color purity, has a high luminous efficiency, and is stable for a long duration of operation, when used singly or as a guest, an organic EL element having a high luminous efficiency and a long operation lifetime, and a high-performance organic EL display that has a high luminous efficiency and a long operation lifetime.Type: GrantFiled: March 9, 2005Date of Patent: August 11, 2009Assignee: Fuji Photo Film Co., Ltd.Inventor: Wataru Sotoyama
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Patent number: 7563518Abstract: An OLED device comprises a cathode, an electron-transporting layer (ETL), a light-emitting layer (LEL) containing a fluorescent light-emitting material, a hole-transporting layer (HTL), and an anode, in that order, wherein the ETL comprises a mixture of compounds, including a first compound and at least one second compound, and wherein there is present a hole blocking layer (HBL) adjacent to the LEL on the cathode side. It provides a reduced drive voltage with comparable color hue. The first compound is present in an amount of 50% to 90% by volume and is represented by Formula (2): Wherein R1 and R4 represent the substituent and neither are hydrogen; R2 and R3 represent hydrogen; Ar1 and Ar4 represent the same aromatic group; and Ar2 and Ar3 represent the same aromatic group.Type: GrantFiled: July 28, 2005Date of Patent: July 21, 2009Assignee: Eastman Kodak CompanyInventors: William J. Begley, Tukaram K. Hatwar, Natasha Andrievsky
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Patent number: 7560604Abstract: A biphenyl derivative having a specific structure and an organic electroluminescent device having a long lifetime due to comprising at least one of organic thin film layers including a light emitting layer sandwiched between a pair of electrodes consisting of an anode and a cathode, wherein the organic thin film layer contains the biphenyl derivatives, singly or as a component of a mixture are provided, and also the biphenyl derivatives particularly suitable for a light emitting material of the organic EL device of the present invention is provided.Type: GrantFiled: July 7, 2006Date of Patent: July 14, 2009Assignee: Idemitsu Kosan Co., Ltd.Inventors: Mineyuki Kubota, Mitsunori Ito, Chishio Hosokawa
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Patent number: 7525129Abstract: It is an object of the present invention to provide an organic light-emitting display of high light-emitting efficiency. The organic light-emitting element comprising a board, upper electrode, lower electrode, a plurality of light-emitting units placed between the upper and lower electrodes, and a charge-generating layer placed between a plurality of the light-emitting units, wherein one of the light-emitting units has a layer for emitting monochromatic light and one of the light-emitting units has a layer for emitting polychromatic light, the former unit having an equivalent or lower light-emitting efficiency than the latter unit.Type: GrantFiled: March 14, 2005Date of Patent: April 28, 2009Assignee: Hitachi Displays, Ltd.Inventors: Kazuhito Masuda, Shingo Ishihara, Sukekazu Aratani, Masaya Adachi
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Patent number: 7517592Abstract: A light-emitting device comprising a pair of electrodes and a light-emitting layer or a plurality of organic layers comprising a light-emitting layer disposed therebetween, the light emitting layer or at least one of a plurality of organic layers comprising the light-emitting layer comprising at least one compound represented by the following general formula (1): wherein each of Ar11, Ar12, Ar13, Ar14 and Ar15 represents an aryl group or a heteroaryl group; Ar represents a benzene ring, a naphthalene ring; a phenanthrene ring or an anthracene ring; at least one of Ar, Ar11, Ar12, Ar13, Ar14 and Ar15 is a condensed aryl group, a condensed or uncondensed heteroaryl group or a group comprising a condensed aryl group or a condensed or uncondensed heteroaryl group; Ar11, Ar12, Ar13, Ar14 and Ar15 are not bonded to each other to form a ring; R11 represents a substituent; and n11 represents an integer of 0 or more.Type: GrantFiled: July 10, 2002Date of Patent: April 14, 2009Assignee: FUJIFILM CorporationInventors: Tatsuya Igarashi, Xuepeng Qiu
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Patent number: 7482623Abstract: An organic semiconductor device includes a substrate, a gate electrode formed directly on the substrate , gate insulating film formed directly on the gate electrode, a source electrode and a drain electrode formed directly on the gate insulating film, an organic semiconductor layer formed directly on the source electrode and the drain electrode, and a voltage control layer disposed directly between the gate insulating film and the organic semiconductor layer and directly contacting the source electrode and the drain electrode, wherein the voltage control layer gives an ambipolar characteristic to the organic semiconductor layer.Type: GrantFiled: March 21, 2005Date of Patent: January 27, 2009Assignee: Seiko Epson CorporationInventors: Takao Nishikawa, Yoshihiro Iwasa, Shin-ichiro Kobayashi, Taishi Takenobu
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Patent number: 7470931Abstract: A thin film transistor, and a flat panel display with the same, including a gate electrode, source and drain electrodes, an organic semiconductor layer, and a gate insulating layer. A first capacitance is a capacitance at a first point where the organic semiconductor layer, an electrode, and the gate insulating layer contact one another, a second capacitance is a capacitance at a second point where the organic semiconductor layer contacts the gate insulating layer, a third capacitance is a capacitance at a third point where the electrode contacts the gate insulating layer, and a fourth capacitance is a capacitance at a fourth point where the organic semiconductor layer contacts the electrode. The first capacitance is greater than one of the second capacitance, the third capacitance, and the fourth capacitance.Type: GrantFiled: May 23, 2005Date of Patent: December 30, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Jae-Bon Koo, Min-Chul Suh, Yeon-Gon Mo
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Patent number: 7468212Abstract: An organic electroluminescent device, which has, between a pair of electrodes, at least one organic layer including a light-emitting layer, in which the organic layer contains a specific tetraphenylene compound, and in which the light-emitting layer contains a phosphorescent material; and a specific tetraphenylene compound that can be used in the device.Type: GrantFiled: November 18, 2004Date of Patent: December 23, 2008Assignee: Fujifilm CorporationInventors: Jun Ogasawara, Tatsuya Igarashi, Satoshi Sano
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Patent number: 7445856Abstract: An organic electroluminescent device including an organic green emission layer comprising a green emission material and a blue emission material. The green emission layer is interposed between a pair of electrodes.Type: GrantFiled: July 26, 2005Date of Patent: November 4, 2008Assignee: Samsung SDI Co., Ltd.Inventors: Hye-In Jeong, Ok-Keun Song, Young-Mo Koo, Yong-Han Lee
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Patent number: 7429425Abstract: There are provided oligoarylene derivatives capable of emitting blue light at high luminous efficiency which are represented by the following general formulae (1) to (4): Ar1-Ch-Ar2 ??(1) Ch1-L-Ch2 ??(2) Ar3-(L1)a-Ch3-(L2)b-Ar4 ??(3) Ar5-Ch4-(Ar7)n-L3-(Ar8)m-Ch5-Ar6 ??(4) wherein Ch, Ch1 and Ch2 are respectively a group containing at least one substituted or unsubstituted condensed aromatic ring having 14 to 20 nuclear atoms; Ch3, Ch4 and Ch5 are respectively a substituted or unsubstituted arylene group having 14 to 20 nuclear atoms; Ar1, Ar2, Ar3, Ar4, Ar5 and Ar6 are respectively a substituted or unsubstituted aryl group having 5 to 30 nuclear atoms; Ar7 and Ar8 are respectively a substituted or unsubstituted arylene group having 5 to 30 nuclear atoms; L1, L2 and L3 are respectively a connecting group; and a, b, n and m are respectively an integer of 0 to 1, as well as organic electroluminescent devices using the same.Type: GrantFiled: August 7, 2003Date of Patent: September 30, 2008Assignee: Idemitsu Kosan Company, Ltd.Inventors: Hidetsugu Ikeda, Masahide Matsuura, Hisayuki Kawamura
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Publication number: 20080191199Abstract: The invention relates to novel polyacene compounds, organic semiconducting formulations and layers comprising them, a process for preparing the formulation and layer and electronic devices, including organic field effect transistors (OFETs), comprising the same.Type: ApplicationFiled: April 21, 2006Publication date: August 14, 2008Inventors: Remi Manouk Anemian, Stephen William Leeming
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Patent number: 7402346Abstract: An organic electroluminescent device comprising an anode, an electroluminescent region, and a cathode. The luminescent region comprises a light-emitting material of Formula I wherein R1 is independently selected from the group consisting of a hydrogen, an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, an amino group, an alkyl amino group, and an aryl amino group; R2 is independently selected from the group consisting of hydrogen, a hetero atom, and an alkyl group; R3 is independently selected from the group consisting of hydrogen, an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, a halogen atom, and a cyano group; and, R4 is independently selected from the group consisting of hydrogen, an alkyl group, an aryl group, a heteroaryl group, an alkoxy group, a halogen atom, and a cyano group.Type: GrantFiled: December 7, 2004Date of Patent: July 22, 2008Assignee: LG. Philips LCD Co., Ltd.Inventors: Jennifer A. Coggan, Hany Aziz, Timothy P. Bender, Nan-Xing Hu
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Publication number: 20080157064Abstract: An organic thin film transistor including a substrate, a gate, a gate insulator, an adhesive layer, a metal nano-particle layer and an organic semiconductor layer is provided. The gate is disposed on the substrate. The gate insulator is disposed on the gate and the substrate. The adhesive layer is disposed on the gate insulator. Besides, the adhesive layer has a hydrophobic surface above the gate and a first hydrophilic surface and a second hydrophilic surface on two sides of the hydrophobic surface. A surface of the metal nano-particle layer is modified by a hydrophilic group, and the metal nano-particle layer is disposed on the first and the second hydrophilic surfaces of the adhesive layer as a source and a drain, respectively. The organic semiconductor layer is disposed on the hydrophobic surface of the adhesive layer and on the metal nano-particle layer.Type: ApplicationFiled: April 20, 2007Publication date: July 3, 2008Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Yi-Yun Tsai, Chuan-Yi Wu, Chin-Chuan Lai
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Patent number: 7393727Abstract: A thin-film transistor, a thin-film transistor sheet, an electric circuit, and a manufacturing method thereof are disclosed, the method comprising the steps of forming a semiconductor layer by providing a semiconductive material on a substrate, b) forming an insulating area, which is electrode material-repellent, by providing an electrode material-repellent material on the substrate, and c) forming a source electrode on one end of the insulating area and a drain electrode on the other end of the insulating area, by providing an electrode material.Type: GrantFiled: October 5, 2006Date of Patent: July 1, 2008Assignee: Konica Minolta Holdings, Inc.Inventor: Katsura Hirai
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Publication number: 20080111473Abstract: Provided are an anthracene derivative having a heteroaryl group containing a nitrogen-containing six-membered ring and having a specific structure and an organic electroluminescence device in which an organic thin film layer comprising a single layer or plural layers including at least a light emitting layer is interposed between a cathode and an anode, wherein at least one layer in the above organic thin film layer contains the anthracene derivative described above in the form of a single component or a mixed component. Provided are the organic electroluminescence device in which homogeneous light emission is obtained over a long period of time and which has a long lifetime and the anthracene derivative which materializes the same.Type: ApplicationFiled: November 25, 2005Publication date: May 15, 2008Applicant: IDEMITSU KOSAN CO., LTD.Inventors: Masahiro Kawamura, Chishio Hosokawa
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Patent number: 7368331Abstract: A thin-film transistor, a thin-film transistor sheet, an electric circuit, and a manufacturing method thereof are disclosed, the method comprising the steps of forming a semiconductor layer by providing a semiconductive material on a substrate, b) forming an isolating area, which is electrode material-repellent, by providing an electrode material-repellent material on the substrate, and c) forming a source electrode on one end of the insulating area and a drain electrode on the other end of the insulating area, by providing an electrode material.Type: GrantFiled: December 19, 2003Date of Patent: May 6, 2008Assignee: Konica Minolta Holdings, Inc.Inventor: Katsura Hirai
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Publication number: 20080093985Abstract: A material for an organic electroluminescent device including a quinone derivative represented by the following formula (1), (2) or (3): wherein R1 to R16 are each a hydrogen atom, a halogen atom, a cyano group, an alkoxy group, a substituted or unsubstituted aryloxy group, an alkyl group, a fluoroalkyl group, an aryl group or a heterocyclic group; provided that at least one of R1 to R4, at least one of R5 to R10 or at least one of R11 to R16 is an aryloxy group; and X is a substituent represented by any one of the following formulas (a) to (f): wherein R17 to R19 are a hydrogen atom, an alkyl group, or aryl group; and R18 and R19 may be bonded together to form a ring.Type: ApplicationFiled: March 29, 2007Publication date: April 24, 2008Applicant: Idemitsu Kosan Co., Ltd.Inventors: Hironobu MORISHITA, Hisayuki Kawamura, Chishio Hosokawa