Patents by Inventor Shizuo Tokito

Shizuo Tokito has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20160288213
    Abstract: A method for producing silver nanoparticles according to the present invention includes the steps of: mixing an amine mixture and a silver compound to yield a complex compound; and heating and decomposing the complex compound to form silver nanoparticles. The amine mixture contains: a primary amine (A) having 8 or more carbon atoms and a melting point of 20° C. or lower; a diamine (B) having a primary amino group, a tertiary amino group, 4 or more carbon atoms, and a melting point of 20° C. or lower; and a cis-unsaturated primary amine (C) having 12 or more carbon atoms and a melting point of 30° C. or lower.
    Type: Application
    Filed: November 19, 2014
    Publication date: October 6, 2016
    Inventors: Daisuke KUMAKI, Shizuo TOKITO
  • Publication number: 20160276598
    Abstract: A benzobis(thiadiazole) derivative represented by the following general formula (1): in which R1 represents a linear or branched alkyl group, or any one of the groups of the following formula (2): in which R represents a linear or branched alkyl group; R2 represents a hydrogen atom; and R3 represents a hydrogen atom, a linear or branched alkyl group, or any one of the groups of the formula (2); with the proviso that at least one of R1 and R3 represents any one of the groups of the formula (2); and two R1 groups, two R2 groups, and two R3 groups may be the same as, or different from each other.
    Type: Application
    Filed: August 29, 2014
    Publication date: September 22, 2016
    Inventors: Shizuo TOKITO, Daisuke KUMAKI, Masashi MAMADA, Kenjiro FUKUDA, Yasuhiro TANAKA, Hidetaka SHIMA, Yasuhiro YONEDA, Harunori FUJITA, Kazuaki KAKITA, Youji OMATA, Natsuko YAMADA, Takashi HONMA, Toshikazu MACHIDA
  • Patent number: 9290516
    Abstract: A benzobis(thiadiazole) derivative represented by the formula (1): in which R represents a group containing at least one fluorine atom (with the proviso that fluorine atom (F) and trifluoromethyl group (—CF3) are excluded), and m represents an integer of from 1 to 10.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: March 22, 2016
    Assignee: UBE INDUSTRIES, LTD.
    Inventors: Shizuo Tokito, Daisuke Kumaki, Hidetaka Shima, Hiroyuki Oda, Yasuhiro Tanaka, Kazuaki Kakita, Toshikazu Machida, Yasuhiro Yoneda, Youji Omata, Tetsuro Shimano
  • Publication number: 20160072086
    Abstract: Provided is a thin film transistor in which at least a support, source and drain electrodes constituted by a conductor, a semiconductor layer, an insulator layer, and a gate electrode constituted by a conductor are laminated in this order. In a laminated cross section of the thin film transistor, a difference between an electrode width of an electrode on a face coming into contact with the support and an electrode width thereof on a face which is opposite to the face coming into contact with the support and comes into contact with the semiconductor layer falls within a range of ±1 ?m. When an arithmetic average roughness in the electrode width of the electrode on the face which is opposite to the face coming into contact with the support and comes into contact with the semiconductor layer is set to Ra, the relation of Ra?10 nm is satisfied.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 10, 2016
    Inventors: Tomoko Okamoto, Kenichi Yatsugi, Yoshinori Katayama, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito
  • Publication number: 20160072068
    Abstract: Provided is a method of manufacturing a thin film transistor satisfying the relation of L<5 ?m. The method includes a process of forming a streak portion by performing transfer printing on a support using a member to be transferred which is provided with an ink streak portion for forming source and drain electrodes and has mold releasability, and baking the streak portion to thereby form the source electrode constituted by a conductor and the drain electrode constituted by a conductor. In the method manufacturing a thin film transistor in which the source and drain electrodes obtained above, a semiconductor layer, an insulator layer, and a gate electrode constituted by a conductor are laminated, after the baking, in a laminated cross section of the thin film transistor to be manufactured is set to A and a channel length thereof is set to L, the ink streak portion is provided so as to satisfy the condition of L/A?0.05.
    Type: Application
    Filed: September 3, 2015
    Publication date: March 10, 2016
    Inventors: Tomoko Okamoto, Kenichi Yatsugi, Yoshinori Katayama, Kenjiro Fukuda, Daisuke Kumaki, Shizuo Tokito
  • Publication number: 20150059853
    Abstract: A benzobis(thiadiazole) derivative represented by the formula (1): in which R represents a group containing at least one fluorine atom (with the proviso that fluorine atom (F) and trifluoromethyl group (—CF3) are excluded), and m represents an integer of from 1 to 10.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 5, 2015
    Inventors: Shizuo Tokito, Daisuke Kumaki, Hidetaka Shima, Hiroyuki Oda, Yasuhiro Tanaka, Kazuaki Kakita, Toshikazu Machida, Yasuhiro Yoneda, Youji Omata, Tetsuro Shimano
  • Patent number: 8300178
    Abstract: A flexible display of the present invention is an active matrix flexible display in which a TFT is provided for each pixel. In the flexible display, an adhesive layer, a protective layer, a gate electrode for the TFT, which is buried in the protective layer, a gate insulating layer for the TFT, source and drain electrodes for the TFT, a pixel electrode electrically connected to the drain electrode, an organic active layer for the TFT, an organic EL layer including a red (R) emitting layer, a green (G) emitting layer and a blue (B) emitting layer, which are formed on a plurality of the pixel electrodes, a metal electrode, and a sealing layer are formed on a plastic film.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: October 30, 2012
    Assignee: Nippon Hoso Kyokai
    Inventors: Tadahiro Furukawa, Shizuo Tokito, Youji Inoue, Mitsunori Suzuki
  • Patent number: 8287325
    Abstract: A flexible display of the present invention is an active matrix flexible display in which a TFT is provided for each pixel. In the flexible display, an adhesive layer, a protective layer, a gate electrode for the TFT, which is buried in the protective layer, a gate insulating layer for the TFT, source and drain electrodes for the TFT, a pixel electrode electrically connected to the drain electrode, an organic active layer for the TFT, an organic EL layer including a red (R) emitting layer, a green (G) emitting layer and a blue (B) emitting layer, which are formed on a plurality of the pixel electrodes, a metal electrode, and a sealing layer are formed on a plastic film.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: October 16, 2012
    Assignee: Nippon Hoso Kyoki
    Inventors: Tadahiro Furukawa, Shizuo Tokito, Youji Inoue, Mitsunori Suzuki
  • Patent number: 8143628
    Abstract: A flexible display of the present invention is an active matrix flexible display in which a TFT is provided for each pixel. In the flexible display, an adhesive layer, a protective layer, a gate electrode for the TFT, which is buried in the protective layer, a gate insulating layer for the TFT, source and drain electrodes for the TFT, a pixel electrode electrically connected to the drain electrode, an organic active layer for the TFT, an organic EL layer including a red (R) emitting layer, a green (G) emitting layer and a blue (B) emitting layer, which are formed on a plurality of the pixel electrodes, a metal electrode, and a sealing layer are formed on a plastic film.
    Type: Grant
    Filed: August 16, 2010
    Date of Patent: March 27, 2012
    Assignees: Kyodo Printing Co., Ltd., Nippon Hoso Kyokai
    Inventors: Tadahiro Furukawa, Shizuo Tokito, Youji Inoue, Mitsunori Suzuki
  • Publication number: 20110037916
    Abstract: A flexible display of the present invention is an active matrix flexible display in which a TFT is provided for each pixel. In the flexible display, an adhesive layer, a protective layer, a gate electrode for the TFT, which is buried in the protective layer, a gate insulating layer for the TFT, source and drain electrodes for the TFT, a pixel electrode electrically connected to the drain electrode, an organic active layer for the TFT, an organic EL layer including a red (R) emitting layer, a green (G) emitting layer and a blue (B) emitting layer, which are formed on a plurality of the pixel electrodes, a metal electrode, and a sealing layer are formed on a plastic film.
    Type: Application
    Filed: August 16, 2010
    Publication date: February 17, 2011
    Applicants: KYODO PRINTING CO., LTD., NIPPON HOSO KYOKAI
    Inventors: Tadahiro Furukawa, Shizuo Tokito, Youji Inoue, Mitsunori Suzuki
  • Publication number: 20110033963
    Abstract: A flexible display of the present invention is an active matrix flexible display in which a TFT is provided for each pixel. In the flexible display, an adhesive layer, a protective layer, a gate electrode for the TFT, which is buried in the protective layer, a gate insulating layer for the TFT, source and drain electrodes for the TFT, a pixel electrode electrically connected to the drain electrode, an organic active layer for the TFT, an organic EL layer including a red (R) emitting layer, a green (G) emitting layer and a blue (B) emitting layer, which are formed on a plurality of the pixel electrodes, a metal electrode, and a sealing layer are formed on a plastic film.
    Type: Application
    Filed: August 16, 2010
    Publication date: February 10, 2011
    Applicants: KYODO PRINTING CO., LTD., NIPPON HOSO KYOKAI
    Inventors: Tadahiro FURUKAWA, Shizuo TOKITO, Youji INOUE, Mitsunori SUZUKI
  • Publication number: 20110033961
    Abstract: A flexible display of the present invention is an active matrix flexible display in which a TFT is provided for each pixel. In the flexible display, an adhesive layer, a protective layer, a gate electrode for the TFT, which is buried in the protective layer, a gate insulating layer for the TFT, source and drain electrodes for the TFT, a pixel electrode electrically connected to the drain electrode, an organic active layer for the TFT, an organic EL layer including a red (R) emitting layer, a green (G) emitting layer and a blue (B) emitting layer, which are formed on a plurality of the pixel electrodes, a metal electrode, and a sealing layer are formed on a plastic film.
    Type: Application
    Filed: August 16, 2010
    Publication date: February 10, 2011
    Applicants: KYODO PRINTING CO., LTD., NIPPON HOSO KYOKAI
    Inventors: Tadahiro FURUKAWA, Shizuo TOKITO, Youji INOUE, Mitsunori SUZUKI
  • Patent number: 7825582
    Abstract: A flexible display of the present invention is an active matrix flexible display in which a TFT is provided for each pixel. In the flexible display, an adhesive layer, a protective layer, a gate electrode for the TFT, which is buried in the protective layer, a gate insulating layer for the TFT, source and drain electrodes for the TFT, a pixel electrode electrically connected to the drain electrode, an organic active layer for the TFT, an organic EL layer including a red (R) emitting layer, a green (G) emitting layer and a blue (B) emitting layer, which are formed on a plurality of the pixel electrodes, a metal electrode, and a sealing layer are formed on a plastic film.
    Type: Grant
    Filed: November 3, 2005
    Date of Patent: November 2, 2010
    Assignees: Kyodo Printing Co., Ltd., Nippon Hoso Kyokai
    Inventors: Tadahiro Furukawa, Shizuo Tokito, Youji Inoue, Mitsunori Suzuki
  • Patent number: 7816172
    Abstract: 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: Grant
    Filed: February 17, 2005
    Date of Patent: October 19, 2010
    Assignee: Kanto Denka Kogyo Co., Ltd.
    Inventors: Youji Inoue, Shizuo Tokito, Masafumi Kobayashi, Yuan Gao
  • Publication number: 20090315456
    Abstract: A flexible organic EL display of the present invention includes a plastic film, an adhesive layer and a lower insulating layer formed thereon, an organic EL element embedded in the lower insulating layer and constructed by forming a cathode, an organic EL layer, and an anode sequentially from a bottom, an upper insulating layer formed on the organic EL element, a TFT embedded in the upper insulating layer and constructed by forming an organic active layer, a source electrode and a drain electrode, a gate insulating layer, and a gate electrode sequentially from a bottom, and a via hole provided in the upper insulating layer and reaching the drain electrode of the TFT, wherein the anode is connected electrically to the drain electrode of the TFT via the via hole.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 24, 2009
    Applicants: KYODO PRINTING CO., LTD., NIPPON HOSO KYOKAI
    Inventors: Tadahiro Furukawa, Masayuki Hosoi, Shizuo Tokito, Toshihiro Yamamoto, Yoshiki Nakajima, Yoshihide Fujisaki, Tatsuya Takei
  • Publication number: 20090315457
    Abstract: A flexible organic EL display of the present invention includes a plastic film, an adhesive layer and a lower insulating layer formed thereon, an organic EL element embedded in the lower insulating layer and constructed by forming an anode, an organic EL layer, and a cathode sequentially from a bottom, an upper insulating layer formed on the organic EL element, a TFT embedded in the upper insulating layer and constructed by forming an oxide semiconductor layer, a source electrode and a drain electrode, a gate insulating layer, and a gate electrode sequentially from a bottom, and a via hole provided in the upper insulating layer and reaching the drain electrode of the TFT, wherein the cathode is connected electrically to the drain electrode of the TFT via the via hole.
    Type: Application
    Filed: June 23, 2009
    Publication date: December 24, 2009
    Applicants: KYODO PRINTING CO., LTD., NIPPON HOSO KYOKAI
    Inventors: Tadahiro Furukawa, Masayuki Hosoi, Shizuo Tokito, Toshihiro Yamamoto, Yoshiki Nakajima, Yoshihide Fujisaki, Tatsuya Takei
  • Patent number: 7375225
    Abstract: 4-Cyanocoumarin derivatives which have a distinct sensitivity to visible light, distinct luminescent ability, and satisfactory applicability for photochemical polymerization, dye lasers, and organic electroluminescent elements. Since most of the derivatives have a fluorescent maximum wavelength of 600 to 650 nm, particularly, 610 to 630 nm, they are extremely useful as luminescent agents for organic EL elements which emit visible light in a red-color region, and can be quite useful as luminescent agents in organic EL elements and laser-active substances in dye lasers, as well as luminous bodies as lighting sources for lighting devices, and information displays for visually displaying information.
    Type: Grant
    Filed: January 21, 2003
    Date of Patent: May 20, 2008
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Yoshio Taniguchi, Toshiki Koyama, Chihaya Adachi, Tomoyasu Saitou, Makoto Satsuki, Akira Shinpo, Sadaharu Suga, Shizuo Tokito, Hisayoshi Fujikawa, Koji Noda, Atsushi Miura, Yasunori Taga
  • Publication number: 20070194302
    Abstract: 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: Application
    Filed: February 17, 2005
    Publication date: August 23, 2007
    Inventors: Youji Inoue, Shizuo Tokito, Masafumi Kobayashi, Yuan Gao
  • Patent number: 7250226
    Abstract: An organic polymeric phosphorescent compound and an organic light-emitting device employing the organic polymeric phosphorescent compound. The phosphorescent compound is a neutral organic polymeric phosphorescent compound emitting phosphorescence and used in an organic light-emitting device, and includes a phosphorescent unit and a carrier transporting unit.
    Type: Grant
    Filed: August 30, 2002
    Date of Patent: July 31, 2007
    Assignees: Nippon Hoso Kyokai, Showa Denko K.K.
    Inventors: Shizuo Tokito, Mitsunori Suzuki, Isao Tanaka, Youji Inoue, Koro Shirane, Masataka Takeuchi, Naoko Ito
  • Patent number: 7205964
    Abstract: The invention provides electroluminescent (EL) elements, such that a red EL light source, a green EL light source and a blue EL light source emit red color light, green color light, and blue color light, respectively, and are disposed at the rear of liquid crystal display elements. Each EL light source includes an organic EL element in which an organic thin film emits light. Each EL light source has a structure in which an organic luminescent layer is sandwiched between an indium tin oxide (ITO) electrode and a metal electrode which have striped patterns which are orthogonal to each other, and sections (luminescent sections) at which the striped patterns of the ITO electrode and the metal electrode intersect with each other emit light. The luminescent sections are arrayed two-dimensionally on a glass substrate and illuminate the entire display area of the liquid crystal display element.
    Type: Grant
    Filed: April 25, 2000
    Date of Patent: April 17, 2007
    Assignee: Seiko Epson Corporation
    Inventors: Osamu Yokoyama, Satoru Miyashita, Tatsuya Shimoda, Yasunori Taga, Shizuo Tokito, Koji Noda