Patents Assigned to Sumitomo Chemical Co., Ltd.
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Publication number: 20140197398Abstract: The present invention uses an isopotential source layer for an electronic device, wherein the source layer provides ions of charge to be preferentially injected into an active layer of the electronic device, such that a charge of the injected ions has the same sign as the sign of a relative bias applied to the isopotential source layer. The source layer may comprise a composite ionic dopant injection layer having at least one component that has a relatively high diffusivity for ions. The composite ionic dopant injection layer may comprise metallic conductive particles and an ion supporting matrix. The composite ionic dopant injection layer may also comprise a continuous metallic conductive network and an ion supporting matrix. The metallic network comprises metallic nanowires or conductive nanotubes. The ion supporting matrix may comprise a conductive polymer.Type: ApplicationFiled: August 2, 2012Publication date: July 17, 2014Applicant: SUMITOMO CHEMICAL CO., LTD.Inventors: John Devin MacKenzie, Eric Jones, Yuko Nakazawa
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Patent number: 8704346Abstract: In a package wherein a lead part coupled to a semiconductor element by wire bonding, an element retention member to retain the semiconductor element on the top face side and radiate heat on the bottom face side, and an insulative partition part to partition the lead part from the element retention member with an insulative resin appear, a creeping route ranging from the top face to retain the semiconductor element to a package bottom face on a boundary plane between the element retention member and an insulative partition part includes a bent route having a plurality of turns. Consequently, it is possible to inhibit an encapsulation resin to seal a region retaining the semiconductor element from exuding toward the bottom face side of the package.Type: GrantFiled: November 16, 2010Date of Patent: April 22, 2014Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tatsuhiko Sakai, Kiyomi Nakamura, Yasuo Matsumi
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Publication number: 20140103326Abstract: A method of manufacturing an organic light emissive device comprising: depositing an organic light emissive layer over an anode and depositing a cathode over the organic light emissive layer, wherein the cathode comprises a trilayer structure formed by: depositing a first layer comprising an electron injecting material; depositing a second layer over the first layer, the second layer comprising a metallic material having a workfunction greater than 3.5 eV; and depositing a third layer over the second layer, the third layer comprising a metallic material having a workfunction greater than 3.5 eV.Type: ApplicationFiled: December 18, 2013Publication date: April 17, 2014Applicants: SUMITOMO CHEMICAL CO., LTD., CAMBRIDGE DISPLAY TECHNOLOGY LIMITEDInventors: Daniel Alan Forsythe, Simon King, Matthew Roberts
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Patent number: 8680678Abstract: A conductive electrode paste or ink formulation including a getter removes or reduces the concentration of the unwanted impurities in an electronic device. These reductions may happen during or immediately after the fabrication or sealing of the device, or they may occur after some activation time or event. Water, oxygen, carbon dioxide, hydrogen, and residual solvents are gettered.Type: GrantFiled: June 1, 2010Date of Patent: March 25, 2014Assignee: Sumitomo Chemical Co., Ltd.Inventors: John Devin MacKenzie, Jian Ping Chen
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Patent number: 8652354Abstract: Organic additives are used to improve the lifetimes of organic electronic devices, such as electroluminescent devices fabricated from polymer luminescent ink. These additives include moisture getters, thermally-activated organic/inorganic hybrids, radical scavengers, antioxidants, UV stabilizers, and photoretarders. For water and oxygen scavengers, activation at elevated temperatures or through another activation method is preferred. This allows for the handling of the device materials containing the scavenger under a lower temperature condition in air where higher levels of ambiently-supplied water or oxygen may also be present. The invention also improves operational lifetimes as getters, scavengers and similar acting additives serve to reduce detrimental reactive species that transport into the device, are generated during operation, or become reactive during operation due to the presence of excited states or external stimulation by electrical, optical or other means.Type: GrantFiled: July 18, 2011Date of Patent: February 18, 2014Assignee: Sumitomo Chemical Co. Ltd.Inventors: Jian Ping Chen, John Devin MacKenzie, Xuanqi Zhang
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Patent number: 8648334Abstract: A method of manufacturing an organic light emissive device comprising: depositing an organic light emissive layer over an anode and depositing a cathode over the organic light emissive layer, wherein the cathode comprises a trilayer structure formed by: depositing a first layer comprising an electron injecting material; depositing a second layer over the first layer, the second layer comprising a metallic material having a workfunction greater than 3.5 eV; and depositing a third layer over the second layer, the third layer comprising a metallic material having a workfunction greater than 3.5 eV.Type: GrantFiled: March 31, 2009Date of Patent: February 11, 2014Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Co., Ltd.Inventors: Daniel Alan Forsythe, Simon King, Matthew Roberts
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Patent number: 8614011Abstract: An electroluminescent material comprises the following structural unit: where X is selected from a group consisting of NR, O, S, SO, SO2, CR2, PR, POR, BR, SiR2; where R is a substituent group and Ar1 and Ar2 comprise aromatic rings; and, wherein Ar1 or Ar2 is fused to a further aryl system Ar3. An optical device comprises a first electrode for injection of positive charge carriers, a second electrode for injection of negative charge carriers and a layer located between the first and second electrode comprising the electroluminescent material.Type: GrantFiled: July 23, 2009Date of Patent: December 24, 2013Assignees: Cambridge Display Technology Limited, Sumitomo Chemical Co., Ltd.Inventors: Annette Steudel, Thomas Pounds
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Publication number: 20130237680Abstract: A white light emitting material comprising a polymer having an emitting polymer chain and at least one emitting end capping group.Type: ApplicationFiled: March 18, 2013Publication date: September 12, 2013Applicants: Sumitomo Chemical Co., Ltd., Cambridge Display Technology LimitedInventors: Richard Wilson, Thomas Pounds, Natasha M. Conway, Ilaria Grizzi, Antonio Guerrero Castillejo
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Patent number: 8518299Abstract: A dichroic guest-host polarizer comprises an oriented polymerized liquid crystal host and aligned therewith a dichroic guest. The dichroic ratio of the polarizer is about 15 or more. The polarizer may have a small thickness, be manufactured using a wet deposition method, optionally in accordance with a desired pattern, and be provided on the inside of a liquid crystal cell. Polymerizable liquid crystals having a highly ordered mesophase which may be suitable used to obtain highly oriented polymer films such as polarizer films are disclosed.Type: GrantFiled: July 2, 2010Date of Patent: August 27, 2013Assignee: Sumitomo Chemical Co., Ltd.Inventors: Johan Lub, Emiel Peeters, Dirk Jan Broer
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Patent number: 8501897Abstract: The present invention provides a method for producing a liquid-crystalline polyester, which comprises melt-polymerizing monomers in a reactor having a draw outlet to obtain a polymer melt and drawing the polymer melt through the draw outlet, characterized in that the monomers comprise a compound selected from an aromatic hydroxycarboxylic acid and derivatives thereof, a compound selected from an aromatic dicarboxylic acid and derivatives thereof and a compound selected from an aromatic diol, an aromatic hydroxyamine, an aromatic diamine and derivatives thereof; the amount of units derived from a compound containing a 1,2-phenylene and/or a 1,3-phenylene skeleton(s) in the polyester is from 0 to 10 mol %; the melt polymerization is performed in the presence of a heterocyclic compound containing two or more nitrogen atoms; and the polymer melt has a flow initiation temperature of from 220 to 250° C.Type: GrantFiled: July 24, 2012Date of Patent: August 6, 2013Assignee: Sumitomo Chemical Co., Ltd.Inventors: Tomoya Hosoda, Eiji Hosoda, Masanobu Matsubara
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Publication number: 20130122625Abstract: A method for manufacturing an organic electroluminescent element that includes an anode (32), a cathode (34), a layered structure placed between the anode and the cathode and formed by stacking a plurality of organic layers including an electron injection layer (44) provided in contact with the cathode, the method including the steps of: preparing a first component (12) in which either the anode alone is or both the anode and at least a part of the organic layers to make up the layered structure are provided on a first substrate (22); preparing a second component (14) in which either the cathode alone is or both the cathode and the rest part to make up the layered structure excluding the part provided in the first component is provided on a second substrate (24); and laminating the first component and the second component to form the layered structure placed between the anode and the cathode, in which the electron injection layer that contains an ionic polymer is formed in the step of preparing the first compType: ApplicationFiled: July 15, 2011Publication date: May 16, 2013Applicant: SUMITOMO CHEMICAL CO., LTD.Inventors: Shuichi Sassa, Yoshinobu Ono
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Publication number: 20130015434Abstract: Photoluminescent and electroluminescent compositions are provided which comprise a matrix comprising aromatic repeat units and a luminescent metal ion or luminescent metal ion complex. Methods for producing such compositions, and the electroluminescent devices formed therefrom, are disclosed.Type: ApplicationFiled: September 19, 2012Publication date: January 17, 2013Applicant: SUMITOMO CHEMICAL CO., LTD.Inventor: Sumitomo Chemical Co., Ltd.
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Patent number: 8334339Abstract: Disclosed are a conjugated diene-based polymer from which a polymer composition excellent in fuel cost-saving properties and a tensile strength at break can be obtained. There is provided a conjugated diene-based polymer having a monomer unit based on a conjugated diene, a monomer unit based on a compound represented by the following formula (1), and a monomer unit based on a compound represented by the following formula (2), in which at least one end of the polymer is modified with the following compound (G). V1-S1??(1) wherein V1 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and S1 represents a substituted silyl group.) V2-A2??(2) wherein V2 represents a hydrocarbyl group having a polymerizable carbon-carbon double bond, and A2 represents a substituted amino group, or a nitrogen-containing heterocyclic group.Type: GrantFiled: August 9, 2011Date of Patent: December 18, 2012Assignee: Sumitomo Chemical Co., Ltd.Inventors: Mana Ito, Katsunari Inagaki, Mayumi Oshima
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Patent number: 8308978Abstract: Photoluminescent and electroluminescent compositions are provided which comprise a matrix comprising aromatic repeat units and a luminescent metal ion or luminescent metal ion complex. Methods for producing such compositions, and the electroluminescent devices formed therefrom, are disclosed.Type: GrantFiled: December 15, 2003Date of Patent: November 13, 2012Assignee: Sumitomo Chemical Co., Ltd.Inventors: Matthew L. Marrocco, III, Farshad J. Motamedi
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Publication number: 20120280375Abstract: In a package wherein a lead part coupled to a semiconductor element by wire bonding, an element retention member to retain the semiconductor element on the top face side and radiate heat on the bottom face side, and an insulative partition part to partition the lead part from the element retention member with an insulative resin appear, a creeping route ranging from the top face to retain the semiconductor element to a package bottom face on a boundary plane between the element retention member and an insulative partition part includes a bent route having a plurality of turns. Consequently, it is possible to inhibit an encapsulation resin to seal a region retaining the semiconductor element from exuding toward the bottom face side of the package.Type: ApplicationFiled: November 16, 2010Publication date: November 8, 2012Applicant: SUMITOMO CHEMICAL CO., LTD.Inventors: Tatsuhiko Sakai, Kiyomi Nakamura, Yasuo Matsumi
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Publication number: 20120205747Abstract: A semiconductor substrate includes a substrate, an insulating layer, and a semiconductor layer. The insulating layer is over and in contact with the substrate. The insulating layer includes at least one of an amorphous metal oxide and an amorphous metal nitride. The semiconductor layer is over and in contact with the insulating layer. The semiconductor layer is formed by crystal growth.Type: ApplicationFiled: March 2, 2012Publication date: August 16, 2012Applicants: THE UNIVERSITY OF TOKYO, SUMITOMO CHEMICAL CO., LTD.Inventors: Hisashi YAMADA, Masahiko HATA, Masafumi YOKOYAMA, Mitsuru TAKENAKA, Shinichi TAKAGI, Tetsuji YASUDA, Hideki TAKAGI, Yuji URABE
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Patent number: 8207184Abstract: A condensation compound of a fluorinated cyclopentane ring and an aromatic ring, which is useful, for example, for electronic materials, and a process for producing the same are provided. For instance, according to Scheme 1 below, a compound (68) containing a condensed structure formed of a hexafluorocyclopentane ring and an aromatic ring is synthesized. The aromatic ring is not limited to a thiophene ring but can be any ring and any substituent can be used. Thus a compound containing a condensed ring structure formed of a hexafluorocyclopentane ring and an aromatic ring, particularly, for instance, a thiophene ring, which was impossible to produce conventionally, can be produced easily with high yield. The compound of the present invention is particularly suitable to be applied to, for example, electronic materials or semiconductors.Type: GrantFiled: May 12, 2011Date of Patent: June 26, 2012Assignee: Sumitomo Chemical Co., Ltd.Inventors: Yutaka Ie, Yoshio Aso
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Patent number: 8206838Abstract: Photoluminescent and electroluminescent compositions are provided which comprise a matrix comprising aromatic repeat units covalently coordinated to a phosphorescent or luminescent metal ion or metal ion complexes. Methods for producing such compositions, and the electroluminescent devices formed therefrom, are also disclosed.Type: GrantFiled: December 16, 2003Date of Patent: June 26, 2012Assignee: Sumitomo Chemical Co., Ltd.Inventors: Matthew L. Marrocco, III, Farshad J. Motamedi, Feras Bashir Abdelrazzaq, Bashir Twfiq Abdelrazzaq, legal representative
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Patent number: 8177433Abstract: A housing for a hydrodynamic bearing unit of this type is formed from a resin material having high oil resistance and low outgassing property to ensure the cleanliness of the bearing unit. An ester-based lubricating oil is used as a lubricating oil filled inside the hydrodynamic bearing unit 1, and the housing 7 is formed from an LCP-based resin material.Type: GrantFiled: August 2, 2005Date of Patent: May 15, 2012Assignees: NTN Corporation, Sumitomo Chemical Co., LtdInventors: Kenji Ito, Fuminori Satoji, Hiroyasu Yamauchi, Mitsuo Maeda
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Publication number: 20120086044Abstract: There is provided a light emitting device that includes a base wafer that contains silicon, a plurality of seed bodies provided in contact with the base wafer, and a plurality of Group 3-5 compound semiconductors that are each lattice-matched or pseudo-lattice-matched to corresponding seed bodies. In the device, a light emitting element that emits light in response to current supplied thereto is formed in at least one of the plurality of the Group 3-5 compound semiconductors, and a current limiting element that limits the current supplied to the light emitting element is formed in at least one of the plurality of the Group 3-5 compound semiconductors other than the Group 3-5 compound semiconductor in which the light emitting element is formed.Type: ApplicationFiled: December 15, 2011Publication date: April 12, 2012Applicant: SUMITOMO CHEMICAL CO., LTD.Inventors: Masahiko HATA, Hiroyuki SAZAWA, Sadanori YAMANAKA