Containing Charge-transfer Agents Patents (Class 252/299.3)
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Patent number: 10754198Abstract: A liquid crystal display device in which a good voltage holding ratio is retained for a long period of time and occurrence of image sticking and stain in a display screen is prevented by using a photo-alignment film. The liquid crystal display device includes an active matrix liquid crystal panel and a backlight. The liquid crystal panel includes a liquid crystal layer, a pair of substrates that sandwich the liquid crystal layer in between, and an alignment film disposed on a liquid crystal layer side surface of each of the substrates. The alignment films are photo-alignment films formed from a material that exhibits a photo-alignment characteristic, and contain carboxyl groups on the liquid crystal layer side. The liquid crystal layer contains a liquid crystal material and at least one kind of quinone derivative selected from the group consisting of benzoquinone derivatives and anthraquinone derivatives.Type: GrantFiled: March 11, 2016Date of Patent: August 25, 2020Assignee: SHARP KABUSHIKI KAISHAInventor: Masanobu Mizusaki
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Band edge emission enhanced organic light emitting diode utilizing chiral liquid crystalline emitter
Patent number: 10727421Abstract: Disclosed herein is a light emitting device and method of manufacturing such a device comprised of a series of photopolymerizable, chiral liquid crystalline layers that can be solvent cast on a substrate. The mixture of chiral materials in each successive layer may be blended in such a way that each layer has the same chiral pitch. Further the chiral materials in each layer may also be blended so that the ordinary and extraordinary refractive indices in each layer match the other layers such that the complete assembly of layers will optically function as a single relatively thick layer of chiral liquid crystal. The chiral nematic material in each layer can spontaneously adopt a helical structure with a helical pitch. The light emitting layers of the light emitting device can further comprise electroluminescent material that emits light into the band edge light propagation modes of the photonic crystal.Type: GrantFiled: March 10, 2017Date of Patent: July 28, 2020Assignee: RED BANK TECHNOLOGIES LLCInventors: Gene C. Koch, John N. Magno -
Patent number: 8648163Abstract: Disclosed are random copoly(phosphonate carbonate)s with the high molecular weight and narrow molecular weight distribution exhibiting a superior combination of properties compared to prior art.Type: GrantFiled: February 11, 2013Date of Patent: February 11, 2014Assignees: FRX Polymers, Inc., Bayer Material Science AGInventors: Dieter Freitag, Pin Go, Lawino Kagumba, Stephan Konrad, Helmut-Werner Heuer, Berit Krauter, Pieter Ooms, Michael Prein, Johann Rechner
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Patent number: 8058550Abstract: This disclosure relates to a polymer that includes a first comonomer repeat unit containing a benzothiadiazole moiety, a thiophene oxide moiety, a cyclopentadithiophene oxide moiety, a thiadiazoloquinoxaline moiety, a benzoisothiazole moiety, a benzothiazole moiety, a thienothiophene moiety, a thienothiophene oxide moiety, a dithienothiophene moiety, a dithienothiophene oxide moiety, or a tetrahydroisoindole moiety. The polymer can be used as a photoactive material in a photovoltaic cell. This disclosure also relates to such photovoltaic cells, as well as modules containing such photovoltaic cells.Type: GrantFiled: July 13, 2006Date of Patent: November 15, 2011Assignee: Konarka Technologies, Inc.Inventors: Russell Gaudiana, Richard Kingsborough, Xiaobo Shi, David Waller, Zhengguo Zhu
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Patent number: 7998540Abstract: The invention relates to novel 9- and/or 10-substituted anthracenes, to their use in liquid crystal, light-emitting or semiconducting materials and devices, in anisotropic polymers, optical, electrooptical, decorative, security, cosmetic, diagnostic, electric, electronic, charge transport, semiconductor, optical recording, electroluminescent, photoconductor or electrophotographic applications, and to liquid crystal, light-emitting and semiconducting materials, polymers and devices comprising them.Type: GrantFiled: June 30, 2004Date of Patent: August 16, 2011Assignee: Merck Patent Gesellschaft mit Beschrankter HaftungInventors: Mark John Goulding, Marcus Thompson, Warren Duffy, Martin Heeney, Iain McCulloch
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Patent number: 7919008Abstract: Disclosed are a silicon-containing compound, a liquid crystal composition comprising the same compound, and a liquid crystal display device comprising a liquid crystal layer prepared from the liquid crystal composition. The silicon-containing compound, which forms the liquid crystal composition, has low viscosity and high negative (?) dielectric anisotropy. Therefore, it is possible to provide a liquid crystal display device, which has a fast response time and can be driven at a low voltage.Type: GrantFiled: January 12, 2006Date of Patent: April 5, 2011Assignee: LG Chem, Ltd.Inventors: Jae Ho Cheong, Min Jin Ko, Dae Ho Kang, Ki Youl Lee, Youn Bong Kim
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Publication number: 20110020566Abstract: A charge transporting, liquid crystal photoalignment material comprising a charge transporting moiety connected through covalent chemical bonds to a surface derivatising moiety, and a photoalignment moiety connected through covalent chemical bonds to a surface derivatising moiety.Type: ApplicationFiled: February 16, 2009Publication date: January 27, 2011Inventor: Gene Carl Koch
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Patent number: 7781673Abstract: This disclosure relates to a polymer containing a first comonomer repeat unit and a second comonomer repeat unit. The first comonomer repeat unit includes a cyclopentadithiophene moiety. The second comonomer repeat unit includes a thienothiophene moiety, a thienothiophene tetraoxide moiety, a dithienothiophene moiety, a dithienothiophene dioxide moiety, a dithienothiophene tetraoxide moiety, or a tetrahydroisoindole moiety. The polymer can be used as a photoactive material in a photovoltaic cell. This disclosure also relates to such photovoltaic cells, as well as modules containing such photovoltaic cells.Type: GrantFiled: June 9, 2006Date of Patent: August 24, 2010Assignee: Konarka Technologies, Inc.Inventors: Russell Gaudiana, Richard Kingsborough, David Waller, Zhengguo Zhu
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Patent number: 7674397Abstract: The invention relates to new reactive mesogenic compounds with charge transport properties comprising at least two thiophene groups, their use as semiconductors or charge transport materials, in optical, electro-optical or electronic devices like for example liquid crystal displays, optical films, organic field effect transistors (FET or OFET) for thin film transistor liquid crystal displays and integrated circuit devices such as RFID tags, electroluminescent devices in flat panel displays, and in photovoltaic and sensor devices, and to a field effect transistor, light emitting device or ID tag comprising the reactive mesogenic charge transport compounds.Type: GrantFiled: February 25, 2005Date of Patent: March 9, 2010Assignee: Merck Patent Gesellschaff mit beschrankter HaftungInventors: Martin Heeney, Weimin Zhang, Steven Tierney, David Sparrowe, Maxim Shkunov, Iain McCulloch
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Patent number: 7572395Abstract: The present invention provides compositions (small molecules, oligomers and polymers) that can be used to modify charge transport across a nanocrystal surface or within a nanocrystal-containing matrix, as well as methods for making and using the novel compositions.Type: GrantFiled: May 16, 2005Date of Patent: August 11, 2009Assignee: Nanosys, IncInventors: Jeffery A. Whiteford, Mihai A. Buretea, Erik C. Scher
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Patent number: 7572393Abstract: The present invention provides polymeric compositions that can be used to modify charge transport across a nanocrystal surface or within a nanocrystal-containing matrix, as well as methods for making and using the novel compositions.Type: GrantFiled: August 26, 2004Date of Patent: August 11, 2009Assignee: Nanosys Inc.Inventors: Jeffery A. Whiteford, Mihai A. Buretea, Linh Nguyen, Erik Scher
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Patent number: 7482043Abstract: The present disclosure describes liquid crystal materials comprising a nematic liquid crystal composition and fullerene-containing complex with high-speed electro-optical response. The fullerene-containing complex includes an organic donor and fullerene, where organic donor represents the electro-optical molecule with initial internal donor-acceptor interaction. The present disclosure also includes liquid crystal devices based on the composition mentioned above. The systems and techniques described herein provide a nematic liquid crystal structure sensitized with a fullerene-containing complex. The material provides improved temporal parameters of the NLC electro-optic response under conditions that maintain good contrast of liquid crystal display devices.Type: GrantFiled: October 5, 2006Date of Patent: January 27, 2009Assignees: Samsung Electronics Co., LtdInventor: Natalia Vladimirovna Kamanina
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Patent number: 7470561Abstract: The main object of the invention is to provide an organic semiconductor material whose material designing is easy, and is capable to secure satisfying purity, so that it can be easily used industrially. And further, also to provide an organic semiconductor structure and an organic semiconductor device using the organic semiconductor material.Type: GrantFiled: March 29, 2005Date of Patent: December 30, 2008Assignee: Dai Nippon Printing Co., Ltd.Inventors: Hiroki Maeda, Ken Tomino, Shigeru Sugawara, Junichi Hanna
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Patent number: 7438833Abstract: The present invention provides compositions (small molecules, oligomers and polymers) that can be used to modify charge transport across a nanocrystal surface or within a nanocrystal-containing matrix, as well as methods for making and using the novel compositions.Type: GrantFiled: May 16, 2005Date of Patent: October 21, 2008Assignee: Nanosys, Inc.Inventors: Jeffery A. Whiteford, Mihai A. Buretea, Erik C. Scher
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Patent number: 7435357Abstract: The invention relates to a polymerised liquid crystal (LC) film comprising at least one photoisomerisable compound and having a pattern of regions with different retardation and/or different orientation of the LC material, to methods of preparing such a film, and to its use as alignment layer, optical retardation film or optical waveguide in liquid crystal displays or other optical or electrooptical components or devices, or for decorative or security applications.Type: GrantFiled: April 2, 2004Date of Patent: October 14, 2008Assignee: Merck Patent GmbHInventors: Richard Harding, Shirley Ann Marden, Ian Victor Edward Hassall, Janice McCreary, Karl Skjonnemand
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Patent number: 7416682Abstract: The invention relates to novel photochromic liquid crystal materials which may be used in various electro-optic devices including liquid crystal devices. The materials can be converted into another form on irradiation by light which may make it feasible for them to be addressed by light in electro-optic devices. The materials are based on 5-membered heterocycles.Type: GrantFiled: June 26, 2003Date of Patent: August 26, 2008Assignee: Chi Mei Optoelectronics CorporationInventors: Michael Frigoli, Georg Mehl
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Patent number: 7416683Abstract: The invention relates to a liquid crystal mixed-composition comprising one or more cellulose derivatives and one or more liquid crystal compounds (preferably low-molecular liquid crystal compound) which can be oriented in a specific direction differing from that of the cellulose derivative, wherein the ratio by weight of the both is preferably in a range from 1:9 to 9:1, a retardation film produced using the composition, a circularly or elliptically polarizing film using the retardation film and an image display device provided with a circularly or elliptically polarizing film. The liquid crystal mixed-composition can be easily oriented in a specific direction on a rubbed substrate. If this orientation is fixed, a retardation film can be easily obtained which has such wavelength dispersion characteristics that the same level of retardation can be imparted to each wavelength in a wide visible region.Type: GrantFiled: November 6, 2003Date of Patent: August 26, 2008Assignees: Nippon Kayku Kabushiki Kaisha, Polatechno Co., Ltd.Inventors: Hideyoshi Fujisawa, Kouichi Tanaka
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Patent number: 7364671Abstract: A polymerisable mixture that can be applied as a layer, an orientation layer of the mixture, and an optical component, such as a retarder or a liquid crystal display, having a layer of which the mixture is a precursor.Type: GrantFiled: April 26, 2006Date of Patent: April 29, 2008Assignee: Rolic Ltd c/o Rolic Technologies LtdInventors: Martin Schadt, Hubert Seiberle
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Patent number: 7329896Abstract: The invention relates to polymerizable charge transport compounds, their use as semiconductors or charge transport materials, in optical, electrooptical or electronic devices like for example organic field effect transistors (FET or OFET) for thin film transistor liquid crystal displays and integrated circuit devices such as RFID tags, electroluminescent devices in flat panel displays, and in plotovoltaic and sensor devices, and to a field effect transistor, light emitting device or ID tag comprising the polymerisable charge transport compounds.Type: GrantFiled: June 12, 2002Date of Patent: February 12, 2008Assignee: Merck Patent GmbHInventors: Steven Tierney, Mark Goulding, Louise Farrand, Mark Giles, Marcus Thompson, Maxim Shkunov, David Sparrowe, Iain McCulloch, Martin Heeney
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Patent number: 7169324Abstract: Disclosed herein are a gelling agent composed of a functional amino acid compound having a tetrathiafulvalenyl group, and a production method of a gelling agent, comprising reacting a tetrathiafulvalene derivative with an amino acid derivative in the presence of 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide hydrochloride and 4-(N,N-dimethylamino)pyridine to obtain a functional amino acid compound having a tetrathiafulvalenyl group.Type: GrantFiled: March 11, 2004Date of Patent: January 30, 2007Assignee: JSR CorporationInventors: Takashi Kato, Tetsu Kitamura, Norihiro Mizoshita, Yusuke Tochigi
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Patent number: 7166239Abstract: There is provided a process for forming a light emitting polymer comprising photopolymerization of a reactive mesogen having an endgroup which is susceptible to photopolymerization e.g. by a radical polymerization process. Also provided are methods for using the light emitter in displays, backlights, electronic apparatus and security viewers.Type: GrantFiled: June 1, 2004Date of Patent: January 23, 2007Assignee: University of HullInventors: Mary O'Neill, Stephen Malcolm Kelly, Adam Edward Alexander Contoret, Gary James Richards
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Patent number: 7166238Abstract: A novel liquid-crystalline ionic conductor, which is useful in the electric, electronic, chemical and bioengineering fields, as an anisotropic reaction solvent, ionic conductor, electric field-responsible conductor or the like, and a method for producing the same, is provided. The liquid-crystalline ionic conductor is obtained by mixing an organic molten salt with a-liquid-crystalline organic molecule or a liquid-crystalline inorganic molecule, which comprises a moiety miscible to the organic molten salt and a moiety that shows liquid-crystalline orientation, thereby forming a liquid-crystalline ionic conductor, wherein the organic molten salt is assembled to the liquid-crystalline molecule.Type: GrantFiled: September 14, 2005Date of Patent: January 23, 2007Assignee: Japan Science and Technology CorporationInventors: Takashi Kato, Kiyoshi Kanie, Masafumi Yoshio, Hiroyuki Ohno, Masahiro Yoshizawa
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Patent number: 7153551Abstract: An organic single-crystalline film useful as a functional film in various devices is produced by selecting a liquid crystal material having a good molecular alignment regularity, disposing the liquid crystal material between a pair of boundaries exerting a thickness regulating force and solidifying the liquid crystal material while imparting a molecular alignment order by phase transition from a liquid crystal phase. The liquid crystal material may preferably be a smectic liquid crystal material which provides a uniform molecular alignment inclusive of the direction of the molecular long axis in a smectic phase.Type: GrantFiled: July 13, 2005Date of Patent: December 26, 2006Assignee: Canon Kabushiki KaishaInventor: Yukio Hanyu
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Patent number: 7118787Abstract: There is provided a liquid crystal alignment layer comprising an alignment layer; and chemically bound to said alignment layer, a transport material. Also provided are methods for forming the liquid crystal alignment layer and the use thereof in displays for electronic apparatus.Type: GrantFiled: July 1, 2002Date of Patent: October 10, 2006Assignee: University of HullInventors: Mary O'Neill, Stephen Malcolm Kelly, Adam Edward Alexander Contoret, Gary James Richards, David Coates
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Patent number: 6936190Abstract: In an electrically conductive organic compound, a side chain portion simultaneously exhibiting refractive index anisotropy and ? conjugated system electrical conductivity is bonded to a main chain portion exhibiting ? conjugated system electrical conductivity. The electrically conductive organic compound is used in the production of a constituent element for electronic devices.Type: GrantFiled: March 28, 2002Date of Patent: August 30, 2005Assignee: Fujitsu LimitedInventor: Hiroaki Yoshida
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Patent number: 6905633Abstract: A compound having formula (3) wherein: D3 is an electron donor moiety; C3 is a conjugated bridging moiety; A3 is an electron acceptor moiety; S3 is a hydrocarbon, a heterocyclic moiety, or a hetero-acyclic moiety; and b? is an integer.Type: GrantFiled: December 13, 2002Date of Patent: June 14, 2005Assignee: Xerox CorporationInventors: Gabriel Iftime, Peter M. Kazmaier
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Patent number: 6899823Abstract: A compound or a polymer thereof promises an advantageous use for an ink-jet ink or a polymer dispersion liquid crystal display.Type: GrantFiled: December 26, 2001Date of Patent: May 31, 2005Assignee: Canon Kabushiki KaishaInventors: Koichi Sato, Jun Kamatani
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Patent number: 6838129Abstract: An electric charge transport method with a high current density and excellent charge transporting capability is provided. Specifically, the charge transport method includes applying a voltage to a liquid crystalline compound in a smectic B liquid crystal phase, which liquid crystalline compound exhibits a smectic B phase as a liquid crystal phase, or applying a voltage to a liquid crystalline compound in a solid state formed as a result of phase transition from a smectic phase, which liquid crystalline compound exhibits the smectic phase as a liquid crystal phase.Type: GrantFiled: May 31, 2001Date of Patent: January 4, 2005Assignee: Nippon Chemical Industrial Co., Ltd.Inventor: Yuichiro Haramoto
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Patent number: 6824837Abstract: The invention provides liquid crystal switching devices, liquid crystal cells made from the switching devices, and electrooptical cells made from the switching devices. The invention further provides methods for methods for changing the orientation of a liquid crystal in a liquid crystal switching device. The liquid crystal switching devices are constructed from a redox-active material supported by a substrate and a liquid crystal having a salt dispersed therein disposed atop the redox-active material.Type: GrantFiled: September 4, 2002Date of Patent: November 30, 2004Assignee: Wisconsin Alumni Research FoundationInventors: Nicholas Lawrence Abbott, Yan-Yeung Luk
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Publication number: 20040227128Abstract: The invention relates to new 3,4-alkylenedioxythiophenes which are substituted with mesogenic groups, if desired via a bridging group, and their polymeric derivatives (poly-(3,4-alkylenedioxythiophenes)).Type: ApplicationFiled: January 21, 2004Publication date: November 18, 2004Inventors: Knud Reuter, Alexander Karbach, Helmut Ritter, Noelle Wrubbel
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Patent number: 6818260Abstract: The invention relates to new thienothiophene derivatives, their use as semiconductors or charge transport materials, in optical, electrooptical or electronic devices like for example organic field effect transistors (FET or OFET) for thin film transistor liquid crystal displays and integrated circuit devices such as RFID tags, electroluminescent devices in flat panel displays, and in photovoltaic and sensor devices, and to a field effect transistor, light emitting device or ID tag comprising the thienothiophene derivatives.Type: GrantFiled: July 9, 2002Date of Patent: November 16, 2004Assignee: Merck Patent GmbHInventors: Louise Farrand, Marcus Thompson, Mark Giles, Martin Heeney, Steven Tierney, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Patent number: 6783697Abstract: Disclosed is a binder-loaded type charge-transport liquid crystal material which comprises a liquid crystal compound and a binder and, in spite of the presence of the binder, can substantially retain the properties inherent in the liquid crystal compound.Type: GrantFiled: February 24, 2003Date of Patent: August 31, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Junichi Hanna, Kyoko Kogo
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Publication number: 20040161549Abstract: A liquid crystal/cured composite layer is formed by sandwiching a mixture of a liquid crystal with an uncured curable compound i.e. a curable compound represented by a structure of an acryloyl group-(OR1)n—O-mesogen structural portion-O—(R2O)m-acryloyl group structure (wherein each of R1 and R2 is a C2-6 alkylene group, and each of n and m is from 1 to 10), between a pair of substrates provided with transparent electrodes, and curing the curable compound.Type: ApplicationFiled: February 19, 2004Publication date: August 19, 2004Applicant: ASAHI GLASS COMPANY LIMITEDInventors: Satoshi Niyama, Shinya Tahara
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Publication number: 20040119049Abstract: Mono-, oligo- and poly-bis(thienyl) arylenes are suitable as as charge transport materials or semiconductors in electrooptical, electronic and electroluminescent devices, to charge transport and semiconductor materials, components and devices comprising mono-, oligo- and poly-bis(thienyl) arylenes.Type: ApplicationFiled: December 3, 2003Publication date: June 24, 2004Inventors: Martin Heeney, Mark Giles, Steven Tierney, Iain McCulloch, Clare Bailey
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Patent number: 6737127Abstract: An organic electroluminescence device is made to show an improved carrier transporting ability and an improved carrier injecting property by doping a liquid crystal compound having a high degree of carrier mobility without generating any ionic current. The organic electroluminescence device comprises a carrier transport layer formed by doping a smectic liquid crystal compound having a hexagonal order structure with a Lewis acid compound, a light-emitting layer and a protection layer arranged between the carrier transport layer and the light-emitting layer and composed of an organic compound having a carrier transporting property of the same type as that of carrier transport layer and a carrier conducting property of the type different from that of the carrier transport layer.Type: GrantFiled: May 23, 2002Date of Patent: May 18, 2004Assignee: Canon Kabushiki KaishaInventors: Akira Tsuboyama, Shinjiro Okada, Takao Takiguchi, Seishi Miura, Takashi Moriyama, Jun Kamatani, Manabu Furugori
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Patent number: 6733849Abstract: According to the present invention, a high-speed charge transport material is provided which comprises a polymer of a liquid crystal material which is a triphenylene compound having at least one specific unsaturated group in a molecule. The high-speed charge transport material can achieve a high-speed charge transport of not lower than 1×10−4 cm2·V−1·S−1 within a wide temperature range.Type: GrantFiled: March 22, 2002Date of Patent: May 11, 2004Assignees: JSR Corporation, National Institute of Advanced Industrial Science and TechnologyInventors: Masaaki Inoue, Masakatsu Ukon, Tsuyoshi Watanabe, Yo Shimizu, Hirosato Monobe
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Patent number: 6720039Abstract: A liquid crystalline compound having a novel structure and a process for producing the same are provided. The liquid crystalline compound is represented by the following general formula (I): wherein R1 and R2 each independently represent a straight-chain, branched or cyclic, saturated or unsaturated hydrocarbon group having 1 to 22 carbon atoms and may be attached directly to the aromatic ring without through X1 or X2; R3 represents a hydrogen atom, a cyano group, a nitro group, a fluorine atom, or a methyl group; and X1 and X2 each independently represent an oxygen atom, a sulfur atom, or a —CO—, —OCO—, —COO—, —N═CH—, —CONH—, —NH—, —NHCO—, or —CH2— group.Type: GrantFiled: October 6, 2000Date of Patent: April 13, 2004Assignee: Dai Nippon Printing Co., Ltd.Inventors: Junichi Hanna, Masahiro Funahashi, Komei Kafuku, Kyoko Kogo
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Patent number: 6692658Abstract: An electrolyte comprises a liquid-crystal compound, a straight-chain or branched polyether compound and a metal salt.Type: GrantFiled: December 15, 2000Date of Patent: February 17, 2004Assignee: Canon Kabushiki KaishaInventors: Shinichi Nakamura, Satoshi Igawa
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Publication number: 20030209692Abstract: The invention relates to new reactive mesogenic benzodithiophene derivatives, their use as semiconductors or charge transport materials, in optical, electro-optical or electronic devices like for example liquid crystal displays, optical films, organic field effect transistors (FET or OFET) for thin film transistor liquid crystal displays and integrated circuit devices such as RFID tags, electroluminescent devices in flat panel displays, and in photovoltaic and sensor devices, and to a field effect transistor, light emitting device or ID tag comprising the reactive mesogenic benzodithiophenes.Type: ApplicationFiled: April 24, 2003Publication date: November 13, 2003Applicant: MERCK PAPTENTGESELLSCHAFT MIT BESCHRANKTER HAFTUNGInventors: Louise Farrand, Martin Heeney, Steven Tierney, Mark Giles, Marcus Thompson, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Patent number: 6645397Abstract: An objective of the present invention is to provide a liquid crystal composition whose orientation undergoes a large change upon irradiation with light, and which also has a large birefringence &Dgr;n. The liquid crystal composition contains an aromatic acetylene compound and a chiral compound that undergoes a structural change upon photoreaction, and has such properties that, upon irradiation with light, its helical pitch undergoes a large change in accordance with the level of the light intensity, and that has a large birefringence &Dgr;n. Therefore, the present invention makes it possible to provide a reflection type color filter which utilizes the liquid crystal composition, and which provides a lighter display with high reflectance. Moreover, the present invention also provides an optical film that can be formed as a thinner film using the liquid crystal composition.Type: GrantFiled: June 6, 2001Date of Patent: November 11, 2003Assignee: Fuji Photo Film Co., Ltd.Inventor: Mitsuyoshi Ichihashi
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Patent number: 6645579Abstract: A liquid crystal device, suitably included in e.g., an organic EL device, is formed of a pair of electrodes and a plurality of layers disposed between the electrodes and including at least one liquid crystal layer. The liquid crystal layer comprises a liquid crystal composition having an electronic carrier-transporting function and comprising at least two compounds including at least one electron-donating compound or electron-accepting compound having a &pgr;-electron conjugated structure. As a result of doping the liquid crystal layer with the electron-donating or electron-accepting compound, the current conduction performance of the liquid crystal layer is improved presumably due to the generation of free carriers therein, whereby a functional device including the liquid crystal device can be improved as a whole.Type: GrantFiled: November 28, 2000Date of Patent: November 11, 2003Assignee: Canon Kabushiki KaishaInventors: Akira Tsuboyama, Shinjiro Okada, Takao Takiguchi, Takashi Moriyama, Jun Kamatani
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Publication number: 20030160211Abstract: An electric charge transport method with a high current density and excellent charge transporting capability is provided. Specifically, the charge transport method includes applying a voltage to a liquid crystalline compound in a smectic B liquid crystal phase, which liquid crystalline compound exhibits a smectic B phase as a liquid crystal phase, or applying a voltage to a liquid crystalline compound in a solid state formed as a result of phase transition from a smectic phase, which liquid crystalline compound exhibits the smectic phase as a liquid crystal phase.Type: ApplicationFiled: December 4, 2002Publication date: August 28, 2003Inventor: Yuichiro Haramoto
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Publication number: 20030151026Abstract: Disclosed is a binder-loaded type charge-transport liquid crystal material which comprises a liquid crystal compound and a binder and, in spite of the presence of the binder, can substantially retain the properties inherent in the liquid crystal compound.Type: ApplicationFiled: February 24, 2003Publication date: August 14, 2003Applicant: Dai Nippon Printing Co., Ltd.Inventors: Junichi Hanna, Kyoko Kogo
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Publication number: 20030085381Abstract: Conjugated mono-, oligo- and polymers of benzo[b]thiophene and bisbenzo[b]thiophene are useful as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors, electroluminescent, photovoltaic and sensor devices.Type: ApplicationFiled: September 27, 2002Publication date: May 8, 2003Applicant: Merck Patent GmbHInventors: Christopher Worrall, Martin Heeney, Steven Tierney, Louise Diane Farrand, Mark Giles, Marcus Thompson, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Patent number: 6558573Abstract: Disclosed is a binder-loaded type charge-transport liquid crystal material which comprises a liquid crystal compound and a binder and, in spite of the presence of the binder, can substantially retain the properties inherent in the liquid crystal compound.Type: GrantFiled: June 14, 2000Date of Patent: May 6, 2003Assignee: Dai Nippon Printing Co., Ltd.Inventors: Junichi Hanna, Kyoko Kogo
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Publication number: 20030080322Abstract: The invention relates to reactive thienothiophenes, their use as semiconductors or charge transport materials, in optical, electrooptical or electronic devices like for example organic field effect transistors (FET or OFET) for thin film transistor liquid crystal displays and integrated circuit devices such as RFID tags, electroluminescent devices in flat panel displays, and in photovoltaic and sensor devices, and to a field effect transistor, light emitting device or ID tag comprising the reactive thienothiophenes.Type: ApplicationFiled: July 9, 2002Publication date: May 1, 2003Applicant: Merck Patent GmbHInventors: Louise Farrand, Marcus Thompson, Mark Giles, Mark Goulding, Martin Heeney, Steven Tierney, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Publication number: 20030067267Abstract: Conjugated mono-, oligo- and polyalkylidenefluorenes are suitable for use as semiconductors or charge transport materials in optical, electrooptical or electronic devices including field effect transistors, electroluminescent, photovoltaic and sensor devices.Type: ApplicationFiled: August 19, 2002Publication date: April 10, 2003Applicant: Merck Patent GmbHInventors: Martin Heeney, Steven Tierney, Mark Giles, Louise Diane Farrand, Maxim Shkunov, David Sparrowe, Iain McCulloch
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Patent number: 6495067Abstract: A liquid crystal compound, preferably a molten iodine salt, an electrolyte comprising the same, and a photo-electrochemical cell are disclosed. The electrolyte is little volatile and excellent in charge transporting performance and provides a photo-electrochemical cell which exhibits high photoelectric conversion efficiency and excellent durability.Type: GrantFiled: March 1, 2000Date of Patent: December 17, 2002Assignee: Fuji Photo Film Co., Ltd.Inventor: Michio Ono
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Publication number: 20020166993Abstract: According to the present invention, a high-speed charge transport material is provided which comprises a polymer of a liquid crystal material which is a triphenylene compound having at least one specific unsaturated group in a molecule. The high-speed charge transport material can achieve a high-speed charge transport of not lower than 1×10−4 cm2·V−1s−1 within a wide temperature range.Type: ApplicationFiled: March 22, 2002Publication date: November 14, 2002Applicant: JSR CORPORATIONInventors: Masaaki Inoue, Masakatsu Ukon, Tsuyoshi Watanabe, Yo Shimizu, Hirosato Monobe
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Patent number: 6420001Abstract: The invention relates to a process as described in claim of preparing a reflective film comprising a layer of a polymerized mesogenic material with helically twisted structure, wherein the helix axis is perpendicular to the film plane, and containing regions with varying helical pitch, to a reflective film obtainable by such a process, to the use of such a reflective film as reflective broadband or notch polarizer or as a multicoloured film or image in liquid crystal displays, as colour filter, in effect pigments, for decorative or security applications, and to a liquid crystal display comprising a liquid crystal cell and a reflective polarizer as described in the foregoing and the following, and optionally further comprising one or more compensaters or polarizers.Type: GrantFiled: July 13, 2001Date of Patent: July 16, 2002Assignee: Merck Patent Gesellschaft mit beschraenkter HaftungInventors: David Coates, Mark Andrew Verrall