Patents by Inventor Hiroaki Iino

Hiroaki Iino 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: 20210119165
    Abstract: An organic material having at least one aromatic conjugated ?-electron system is selected. The purity of the organic material is improved by purification, and a conduction mechanism of the organic material is confirmed by a time-of-flight method, whereby a liquid phase of the organic material is usable as an organic semiconductor. A method that enables the usage of a liquid phase of an organic material as an organic semiconductor is provided. The method involves confirming the electronic conduction of the organic material having at least one aromatic conjugated ?-electron system by evaluation of a charge transport property using a time-of-flight method, and by evaluation of a dilution effect caused by addition of a diluent.
    Type: Application
    Filed: December 28, 2020
    Publication date: April 22, 2021
    Applicant: Japan Science and Technology Agency
    Inventors: Jun-Ichi Hanna, Keiji Tokunaga, Hiroaki Iino
  • Patent number: 10937964
    Abstract: The purpose of the present invention is to provide an organic semiconductor material having liquid crystallinity and high electron mobility. The present invention is an organic semiconductor material having at least a charge-transporting molecular unit (A) having a structure of an aromatic fused ring system and a cyclic structural unit (B) bonded to the aforementioned unit via a single bond, wherein the unit (A) and/or the unit (B) has a side chain composed of a unit (C), and wherein the organic semiconductor material exhibits a liquid crystal phase that is different from an N-phase, an SmA-phase or an SmC-phase.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: March 2, 2021
    Assignees: Tokyo Institute of Technology, DIC Corporation
    Inventors: Junichi Hanna, Takeo Kobori, Takayuki Usui, Yukiko Takayashiki, Hiroaki Iino, Akira Oono
  • Publication number: 20190044082
    Abstract: An organic material having at least one aromatic conjugated ?-electron system is selected. The purity of the organic material is improved by purification, and a conduction mechanism of the organic material is confirmed by a time-of-flight method, whereby a liquid phase of the organic material is usable as an organic semiconductor. A method that enables the usage of a liquid phase of an organic material as an organic semiconductor is provided. The method involves confirming the electronic conduction of the organic material having at least one aromatic conjugated ?-electron system by evaluation of a charge transport property using a time-of-flight method, and by evaluation of a dilution effect caused by addition of a diluent.
    Type: Application
    Filed: October 9, 2018
    Publication date: February 7, 2019
    Inventors: Jun-Ichi HANNA, Keiji TOKUNAGA, Hiroaki IINO
  • Patent number: 10158087
    Abstract: The present invention provides an organic thin film and an organic transistor having high performance stability and mobility. Specifically, there are provided an organic thin film including a compound containing a charge transporting molecular unit A having a structure of an aromatic fused ring system and a unit B serving as a side chain, the compound having a bilayer structure; an organic semiconductor device including the organic thin film; and an organic transistor including the organic thin film used as an organic semiconductor layer.
    Type: Grant
    Filed: March 6, 2014
    Date of Patent: December 18, 2018
    Assignee: DIC CORPORATION (TOKYO)
    Inventors: Junichi Hanna, Hiroaki Iino, Yasuyuki Watanabe, Junichiro Koike, Hiroshi Maki, Yutaka Tachikawa, Atsuhisa Miyawaki, Yoshinobu Sakurai
  • Publication number: 20180351106
    Abstract: The purpose of the present invention is to provide an organic semiconductor material having liquid crystallinity and high electron mobility. The present invention is an organic semiconductor material having at least a charge-transporting molecular unit (A) having a structure of an aromatic fused ring system and a cyclic structural unit (B) bonded to the aforementioned unit via a single bond, wherein the unit (A) and/or the unit (B) has a side chain composed of a unit (C), and wherein the organic semiconductor material exhibits a liquid crystal phase that is different from an N-phase, an SmA-phase or an SmC-phase.
    Type: Application
    Filed: July 6, 2018
    Publication date: December 6, 2018
    Applicants: Tokyo Institute of Technology, DIC Corporation
    Inventors: Junichi Hanna, Takeo Kobori, Takayuki Usui, Yukiko Takayashiki, Hiroaki Iino, Akira Oono
  • Patent number: 10056557
    Abstract: The purpose of the present invention is to provide an organic semiconductor material having liquid crystallinity and high electron mobility. The present invention is an organic semiconductor material having at least a charge-transporting molecular unit (A) having a structure of an aromatic fused ring system and a cyclic structural unit (B) bonded to the aforementioned unit via a single bond, wherein the unit (A) and/or the unit (B) has a side chain composed of a unit (C), and wherein the organic semiconductor material exhibits a liquid crystal phase that is different from an N-phase, an SmA-phase or an SmC-phase.
    Type: Grant
    Filed: March 9, 2012
    Date of Patent: August 21, 2018
    Assignees: Tokyo Institute of Technology, DIC Corporation
    Inventors: Junichi Hanna, Takeo Kobori, Takayuki Usui, Yukiko Takayashiki, Hiroaki Iino, Akira Oono
  • Publication number: 20140081028
    Abstract: The purpose of the present invention is to provide an organic semiconductor material having liquid crystallinity and high electron mobility. The present invention is an organic semiconductor material having at least a charge-transporting molecular unit (A) having a structure of an aromatic fused ring system and a cyclic structural unit (B) bonded to the aforementioned unit via a single bond, wherein the unit (A) and/or the unit (B) has a side chain composed of a unit (C), and wherein the organic semiconductor material exhibits a liquid crystal phase that is different from an N-phase, an SmA-phase or an SmC-phase.
    Type: Application
    Filed: March 9, 2012
    Publication date: March 20, 2014
    Inventors: Junichi Hanna, Takeo Kobori, Takayuki Usui, Yukiko Takayashiki, Hiroaki Iino, Akira Oono
  • Publication number: 20120175604
    Abstract: An organic material having at least one aromatic conjugated ?-electron system is selected. The purity of the organic material is improved by purification, and a conduction mechanism of the organic material is confirmed by a time-of-flight method, whereby a liquid phase of the organic material is usable as an organic semiconductor. A method that enables the usage of a liquid phase of an organic material as an organic semiconductor is provided. The method involves confirming the electronic conduction of the organic material having at least one aromatic conjugated ?-electron system by evaluation of a charge transport property using a time-of-flight method, and by evaluation of a dilution effect caused by addition of a diluent.
    Type: Application
    Filed: September 15, 2010
    Publication date: July 12, 2012
    Inventors: Jun-ichi Hanna, Keiji Tokunaga, Hiroaki Iino
  • Patent number: 7709830
    Abstract: An organic semiconductor device Including an organic semiconductor layer in a crystallized crystal state is disclosed. The organic semiconductor layer is formed from an organic semiconductor material including a liquid crystal molecule. The semiconductor material has properties capable of exhibiting a supercooled state during a phase transition process, in which a phase having no periodic regularity is capable of being transferred into a phase having periodic regularity at a location of a center of gravity in between the liquid crystal molecules. The phase having no periodic regularity at a location of a center of gravity In between the liquid crystal molecules is a nematic liquid crystal phase and the phase having periodic regularity at a location of a center of gravity in between the liquid crystal molecules is a crystal phase.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: May 4, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Junichi Hanna, Hiroaki Iino, Hiroki Maeda
  • Patent number: 7259390
    Abstract: There is provided a liquid crystalline material, suitable for use as an organic semiconductor material, in which, even when the charge transport distance is long, the charge transport capability is satisfactory, the charge mobility is high, and the dependence of the charge transport properties upon field strength is small. The organic semiconductor material having rodlike low-molecular weight liquid crystallinity comprises: a core structure comprising L 6 ? electron rings, M 8 ? electron rings, N 10 ? electron rings, O 12 ? electron rings, P 14 ? electron rings, Q 16 ? electron rings, R 18 ? electron rings, S 20 ? electron rings, T 22 ? electron rings, U 24 ? electron rings, and V 26 ? electron rings, wherein L, M, N, O, P, Q, R, S, T, U, and V are each an integer of 0 (zero) to 6 and L+M+N+O+P+Q+R+S+T+U+V=1 to 6; and a terminal structure attached to at least one end of the core structure, the terminal structure being capable of developing liquid crystallinity.
    Type: Grant
    Filed: February 26, 2004
    Date of Patent: August 21, 2007
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Jun-Ichi Hanna, Hiroaki Iino, Hiroki Maeda
  • Patent number: 7135702
    Abstract: The main object is to provide a manufacturing method of organic semiconductor, an organic semiconductor device structure manufactured by the manufacturing method and an organic semiconductor device, those having uniform and high carrier transport property over a relatively large area.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: November 14, 2006
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Junichi Hanna, Hiroaki Iino, Hiroki Maeda
  • Publication number: 20060113526
    Abstract: A manufacturing method of an organic semiconductor device wherein an organic semiconductor layer being, a structural component of an organic semiconductor device is formed continuously with uniform performance over a sufficiently large area.
    Type: Application
    Filed: March 29, 2005
    Publication date: June 1, 2006
    Inventors: Junichi Hanna, Hiroaki Iino, Hiroki Maeda
  • Publication number: 20060060840
    Abstract: The main object is to provide a manufacturing method of organic semiconductor, an organic semiconductor device structure manufactured by the manufacturing method and an organic semiconductor device, those having uniform and high carrier transport property over a relatively large area.
    Type: Application
    Filed: March 29, 2005
    Publication date: March 23, 2006
    Inventors: Junichi Hanna, Hiroaki Iino, Hiroki Maeda
  • Publication number: 20040245497
    Abstract: There is provided a liquid crystalline material, suitable for use as an organic semiconductor material, in which, even when the charge transport distance is long, the charge transport capability is satisfactory, the charge mobility is high, and the dependence of the charge transport properties upon field strength is small.
    Type: Application
    Filed: February 26, 2004
    Publication date: December 9, 2004
    Inventors: Jun-Ichi Hanna, Hiroaki Iino, Hiroki Maeda