Patents by Inventor Hiroki Maeda

Hiroki Maeda 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: 20110053313
    Abstract: The present invention provides a manufacturing method of an organic semiconductor device comprising a step of transferring an organic semiconductor layer to a gate insulation layer by a thermal transfer at a liquid crystal phase transition temperature of a liquid crystalline organic semiconductor material, and the step uses: an organic semiconductor layer-transferring substrate comprising a parting substrate having parting properties, and the organic semiconductor layer formed on the parting substrate and containing the liquid crystalline organic semiconductor material; and a substrate for forming an organic semiconductor device comprising a substrate, a gate electrode formed on the substrate, and the gate insulation layer formed to cover the gate electrode and having alignment properties which are capable of aligning the liquid crystalline organic semiconductor material on a surface of the gate insulation layer.
    Type: Application
    Filed: January 21, 2009
    Publication date: March 3, 2011
    Inventors: Ken Tomino, Masanao Matsuoka, Tomomi Suzuki, Hiroki Maeda
  • Patent number: 7871756
    Abstract: There is provided a photosensitive thermosetting resin composition used for producing a permanent film, capable of forming a resin layer which is excellent in fluidity upon heat bonding after pattern, formation and also has excellent adhesion as well as bonding properties and/or sealing properties. This composition contains a reaction product of (A) an alkali soluble resin and (C) a 10 crosslinking polyvinyl ether compound, (B) a compound generating an acid under irradiation with radiation, and (D) an epoxy resin.
    Type: Grant
    Filed: November 18, 2004
    Date of Patent: January 18, 2011
    Assignee: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Toru Takahashi, Naoya Katsumata, Hiroki Maeda
  • Patent number: 7847284
    Abstract: There are provided an organic semiconductor material, which can constitute an organic semiconductor layer having homogeneous and a high level of charge transfer characteristics over a large area, and an organic semiconductor structure and an organic semiconductor device utilizing the organic semiconductor material. The organic semiconductor material comprises a polymeric compound and a monomeric compound, the polymeric compound having, in a part of its side chain, a core structure comprising a predetermined ? electron ring, the monomeric compound having a core structure comprising a predetermined ? electron ring, the monomeric compound having, in at least one of its both ends, a terminal group capable of developing liquid crystallinity.
    Type: Grant
    Filed: March 26, 2003
    Date of Patent: December 7, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Jun-Ichi Hanna, Teppei Shimakawa, Masanori Akada, Hiroki Maeda
  • Publication number: 20100224869
    Abstract: The present invention is directed to the provision of a liquid crystalline organic semiconductor material, which is highly stable under a film forming environment and, at the same time, can easily form a film, for example, by coating. The liquid crystalline organic semiconductor material comprises: a thiophene skeleton comprising 3 to 6 thiophenes linearly connected to each other; and an identical alkyl group having 1 to 20 carbon atoms located on both sides of the thiophene skeleton, wherein acetylene skeletons each have been introduced into between the thiophene skeleton and the alkyl group, or acetylene skeletons have been introduced symmetrically into the thiophene skeleton.
    Type: Application
    Filed: May 18, 2010
    Publication date: September 9, 2010
    Applicant: Dai Nippon Printing Co., Ltd.
    Inventors: Ken Tomino, Shigeru Sugawara, Hiroki Maeda, Masanao Matsuoka
  • Publication number: 20100213447
    Abstract: This invention provides a vertical organic transistor that can realize large current modulation and a reduction in production cost, and a method for manufacturing the vertical organic transistor. The vertical organic transistor comprises an upper electrode, a lower electrode, an organic semiconductor provided between both the electrodes, and an intermediate electrode provided within the organic semiconductor, the intermediate electrode being a layered continuous body comprising a continuous insulating metal compound and particulate metals distributed within the insulating metal compound.
    Type: Application
    Filed: September 1, 2008
    Publication date: August 26, 2010
    Applicant: Dai Nippon Printing Co., Ltd
    Inventors: Shinya Fujimoto, Hiroki Maeda, Yoshiaki Tsuruoka
  • 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: 7671424
    Abstract: A metal oxide semiconductor field effect transistor includes a semiconductor substrate; a well region containing an impurity of a first conductivity type disposed on the semiconductor substrate, the well region including a source region and a drain region formed by adding an impurity of a second conductivity type, the source region and the drain region being separated from each other by a predetermined gap; an insulating film disposed on the surface of the well region in the gap between the source region and the drain region; and a gate electrode disposed on the insulating film. The well region is composed of an epitaxial layer, and the epitaxial layer includes an impurity layer of the first conductivity type having a different impurity concentration.
    Type: Grant
    Filed: September 18, 2007
    Date of Patent: March 2, 2010
    Assignee: Sony Corporation
    Inventor: Hiroki Maeda
  • Patent number: 7638795
    Abstract: There are provided an organic semiconductor structure comprising an organic semiconductor layer, which is large in size and homogeneous and has high charge transfer characteristics, a process for producing the same, and an organic semiconductor device. The organic semiconductor structure has, in at least a part thereof, an organic semiconductor layer comprising an aligned liquid crystalline organic semiconductor material. The liquid crystalline organic semiconductor material comprises an organic compound having a core 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.
    Type: Grant
    Filed: March 28, 2006
    Date of Patent: December 29, 2009
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Jun-ichi Hanna, Hiroki Maeda, Masanori Akada
  • Publication number: 20090286020
    Abstract: This invention provides a photosensitive resin composition for the production of a three-dimensional micro-molded product having high sensitivity, which satisfies 0.35???0.78 wherein ? represents a value determined from a relational formula y=?Ln(x)±? where ? represents an arbitrary real number, x represents the exposure of an actinic radiation, mJ/cm2, and y represents the amount of cured resin by the exposure in terms of the ratio between a coating film thickness before development and a residual film thickness after development, i.e., ?h/h where h represents the coating film thickness before development, ?m, and ?h represents the residual film thickness after development, ?m, and a photosensitive dry film using the same. The molding accuracy of a three-dimensional micro-molded product having a predetermined three-dimensional face can be improved.
    Type: Application
    Filed: May 11, 2006
    Publication date: November 19, 2009
    Applicant: TOKYO OHKA KOGYO CO., LTD.
    Inventors: Takahiro Asai, Toru Takahashi, Hiroki Maeda
  • Patent number: 7550181
    Abstract: A novel information recording medium is provided which records information upon the application of thermal energy, reads the recorded information by detecting the value of photoelectric current generated by light applied to the information recorded portion, and can realize multi-valued information recording or analog information recording. The information recording medium comprises: a pair of electrodes; and a liquid crystal material filled into a gap between the electrodes, the liquid crystal material having a property such that the charge-transport properties are varied according to the phase transfer between a plurality of stable liquid crystal phases of the liquid crystal and/or the history of the phase transfer.
    Type: Grant
    Filed: November 17, 2003
    Date of Patent: June 23, 2009
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroki Maeda, Kyoko Kogo, Junichi Hanna
  • Patent number: 7470561
    Abstract: 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: Grant
    Filed: March 29, 2005
    Date of Patent: December 30, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroki Maeda, Ken Tomino, Shigeru Sugawara, Junichi Hanna
  • Publication number: 20080213596
    Abstract: A photosensitive laminate film for forming a top plate portion, which is suitably used for efficiently and inexpensively forming various precision fine spaces, particularly the precision fine spaces formed in an electronic part such as inkjet head, and a method of forming the precision fine space using the photosensitive laminate film are provided. As the photosensitive laminate film for forming the top plate portion of the precision fine space, which constitutes the top plate portion of the precision fine space by being placed on the precision minute concave portion so as to cover an upper opening followed by being cured, a laminate film providing at least the photosensitive composition layer and the transparent support film is used. The transparent support film supports the photosensitive composition layer as well as prevents the photosensitive composition layer from being deformed upon curing.
    Type: Application
    Filed: January 23, 2006
    Publication date: September 4, 2008
    Applicant: Tokyo Ohka Kogyo Co., Ltd.
    Inventors: Toru Takahashi, Atsushi Yamanouchi, Naoya Katsumata, Hiroki Maeda
  • Patent number: 7408188
    Abstract: An organic semiconductor material characterized by having a structure represented by chemical formula 1, the planarity of a main chain A1-X-A2 being disintegrated by steric hindrance between B1 and X and steric hindrance between B2 and X, the organic semiconductor material having a number average molecular weight of about 2,000 to about 200,000: wherein A1, A2, B1, B2 and X each have a skeleton 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 B1 and B2 have an alkyl group.
    Type: Grant
    Filed: June 7, 2006
    Date of Patent: August 5, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shigeru Sugawara, Hiroki Maeda, Ken Tomino, Masanao Matsuoka
  • Patent number: 7405003
    Abstract: An organic semiconductor material, enabling to exhibit liquid crystal phase at wide temperature range including at least ordinary temperature and to exhibit high charge carrier mobility, and an organic semiconductor structure and organic semiconductor device formed from the organic semiconductor material. The organic semiconductor material has a quaterthiophene skeleton as shown in a following chemical formula 1, wherein R1 in the chemical formula 1 is an alkyl group of C1 to C20 or a hydrogen, and R2 is an alkyl group of C1 to C20 or a hydrogen.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: July 29, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Hiroki Maeda, Ken Tomino, Shigeru Sugawara, Masahiro Funahashi, Junichi Hanna
  • Patent number: 7399426
    Abstract: There is provided a liquid crystalline organic semiconductor material that can effectively develop electron conductive properties which a liquid crystal system inherently has. The liquid crystalline organic semiconductor material has both an isotropic phase and a smectic liquid crystal phase and comprises an electronically conductive liquid crystal material, wherein the concentration of an impurity in the liquid crystal material is controlled to a lower value than the critical concentration at which the electron conductivity of the liquid crystal material disappears or is significantly reduced rendering ion conduction dominant.
    Type: Grant
    Filed: March 16, 2005
    Date of Patent: July 15, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Junichi Hanna, Hiroki Maeda
  • Patent number: 7365359
    Abstract: An organic semiconductor material having high charge mobility characteristics and an organic semiconductor element is provided. The organic semiconductor material has rodlike low-molecular liquid crystallinity, including a skeleton structure comprising L 6 ? electron aromatic rings, M 10 ? electron aromatic rings, and N 14? electron aromatic rings, wherein L, M, and N are each an integer of 0 (zero) to 4 and L+M+N=1 to 4; and a terminal structure attached to both ends of the skeleton structure. The terminal structure can develop liquid crystallinity. The phase angle ? of impedance of the organic semiconductor material is ?80°????90° as determined in the measurement of impedance in a frequency f range of 100 Hz?f?1 MHz in such a state that the organic semiconductor material in an isotropic phase state is held between a pair of opposed substrates with an interelectrode spacing of 9 ?m.
    Type: Grant
    Filed: October 30, 2003
    Date of Patent: April 29, 2008
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Shinobu Sakurada, Ken Tomino, Hiroki Maeda, Masanori Akada, Jun-ichi Hanna
  • Publication number: 20080073712
    Abstract: A metal oxide semiconductor field effect transistor includes a semiconductor substrate; a well region containing an impurity of a first conductivity type disposed on the semiconductor substrate, the well region including a source region and a drain region formed by adding an impurity of a second conductivity type, the source region and the drain region being separated from each other by a predetermined gap; an insulating film disposed on the surface of the well region in the gap between the source region and the drain region; and a gate electrode disposed on the insulating film. The well region is composed of an epitaxial layer, and the epitaxial layer includes an impurity layer of the first conductivity type having a different impurity concentration.
    Type: Application
    Filed: September 18, 2007
    Publication date: March 27, 2008
    Applicant: SONY CORPORATION
    Inventor: Hiroki Maeda
  • Publication number: 20080044764
    Abstract: There is provided a photosensitive thermosetting resin composition used for producing a permanent film, capable of forming a resin layer which is excellent in fluidity upon heat bonding after pattern, formation and also has excellent adhesion as well as bonding properties and/or sealing properties. This composition contains a reaction product of (A) an alkali soluble resin and (C) a 10 crosslinking polyvinyl ether compound, (B) a compound generating an acid under irradiation with radiation, and (D) an epoxy resin.
    Type: Application
    Filed: November 18, 2004
    Publication date: February 21, 2008
    Inventors: Toru Takahashi, Naoya Katsumata, 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: 7256064
    Abstract: The present invention provides an organic semiconductor device comprising an organic semiconductor layer having good charge carrier transport property, wherein a carrier injection to the organic semiconductor layer is easy. The above problem is solved by an organic semiconductor device comprising a first electrode and a second electrode facing to each other, and an organic semiconductor layer provided in between the first electrode and the second electrode, wherein a charge carrier injection promoting layer is formed in between the organic semiconductor layer and at least one electrode of the first electrode and the second electrode.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: August 14, 2007
    Assignee: Dai Nippon Printing Co. Ltd.
    Inventors: Junichi Hanna, Hiroki Maeda, Akihiko Nakasa, Hidehiro Nakagawa