Patents by Inventor Masakazu Okada

Masakazu Okada 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: 20110278592
    Abstract: A semiconductor device which is designed based on RDR, suppresses the occurrence of a trouble at the boundary between an active region and a power wire and therearound and is small in size and highly integrated. The semiconductor device includes a first conductive impurity region for functional elements which is formed over the main surface of a semiconductor substrate and a second conductive impurity region for power potential to which power potential is applied in at least one standard cell. It also includes insulating layers which are formed over the main surface of the semiconductor substrate and have throughholes reaching the main surface of the semiconductor substrate, and a conductive layer for contact formed in the throughholes of the insulating layers.
    Type: Application
    Filed: April 14, 2011
    Publication date: November 17, 2011
    Inventors: Nobuo TSUBOI, Masakazu OKADA
  • Publication number: 20110001246
    Abstract: The reliability of a semiconductor device having an embedded wire in the lowest layer wire is improved. In a main surface of a semiconductor substrate, MISFETs are formed and over the main surface, insulating films 10, 11 are formed. In the insulating films 10, 11 a contact hole is formed and a plug is embedded therein. Over the insulating film 11 in which the plug is embedded, insulating films 14, 15, 16 are formed and an opening is formed in the insulating films 14, 15, 16 and a wire is embedded therein. The insulating film 15 is an etching stopper film when etching the insulating film 16 in order to form the opening, containing silicon and carbon. The insulating film 11 has a high hygroscopicity and the insulating film 15 has a low moisture resistance, however, by interposing the insulating film 14 therebetween and making the insulating film 14 have a higher density of the number of Si (silicon) atoms than that of the insulating film 11, an electrically weak interface is prevented from being formed.
    Type: Application
    Filed: September 15, 2010
    Publication date: January 6, 2011
    Inventors: Takeshi FURUSAWA, Takao Kamoshima, Masatsugu Amishiro, Naohito Suzumura, Shoichi Fukui, Masakazu Okada
  • Patent number: 7829375
    Abstract: A method for manufacturing an organic thin film transistor having excellent characteristics by a simple process, and an organic thin film transistor are provided. In a manufacture method of an organic thin film transistor element having a gate electrode, a gate insulation layer, an organic semiconductor layer and a source electrode and a drain electrode on a support, the method is characterized by comprising a step for forming an organic semiconductor precursor layer by applying a solution in which an organic semiconductor precursor is dissolved, and a step for forming an organic semiconductor layer by converting the organic semiconductor precursor to an organic semiconductor by exposing the organic semiconductor precursor layer to a discharging gas in a plasma state.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: November 9, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventor: Masakazu Okada
  • Patent number: 7804472
    Abstract: There is provide a low cost liquid display panel with high image quality, the liquid crystal display in which temperature compensation is unnecessary and image quality is not affected by temperature changes of the surrounding environment. In the active matrix cholesteric liquid crystal display panel, the time Tw for applying voltage to the liquid crystal layer at the time of image writing is set so that the variation ?Vs depending on temperature of the writing voltage which makes the liquid crystal layer to show approximate 50% of the maximum reflectance is less than or equal to a predetermined value within a predetermined temperature range.
    Type: Grant
    Filed: September 5, 2006
    Date of Patent: September 28, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Masakazu Okada, Mitsuyoshi Miyai
  • Publication number: 20100233863
    Abstract: To provide a technique capable of suppressing the diffusion of copper atoms adhering to the back face of a semiconductor substrate from the back face into the inside of the semiconductor substrate, and capable of suppressing performance degradation of semiconductor elements such as a MISFET formed at the main face of the semiconductor substrate, in semiconductor devices using copper wiring for a wiring layer. A copper diffusion prevention film formed at the main face of the semiconductor substrate is denoted by a first copper diffusion prevention film, and a copper diffusion prevention film formed at the back face of the semiconductor substrate is denoted by a second copper diffusion prevention film. The characteristic of the embodiment lies in that the second copper diffusion prevention film is formed at the back face of the semiconductor substrate.
    Type: Application
    Filed: March 10, 2010
    Publication date: September 16, 2010
    Inventors: Takeshi Kawamura, Masakazu Okada
  • Patent number: 7781255
    Abstract: A method of manufacturing a donor sheet for transferring a transfer layer having a prescribed shape onto a receiving substrate, wherein: a step for forming an organic semiconductor precursor wherein a solution in which the organic semiconductor precursor which converts to an organic semiconductor due to heat, is coated on a substrate sheet; a step for forming a transfer layer of a prescribed shape by heating the organic semiconductor precursor layer in the prescribed shape to convert the organic semiconductor precursor layer to the organic semiconductor; and a step for removing the organic semiconductor precursor that is not converted to the organic semiconductor are performed in that order.
    Type: Grant
    Filed: September 19, 2007
    Date of Patent: August 24, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Mitsuyoshi Miyai, Masakazu Okada
  • Publication number: 20100184252
    Abstract: A method for manufacturing an organic thin film transistor having excellent characteristics by a simple process, and an organic thin film transistor are provided. In a manufacture method of an organic thin film transistor element having a gate electrode, a gate insulation layer, an organic semiconductor layer and a source electrode and a drain electrode on a support, the method is characterized by comprising a step for forming an organic semiconductor precursor layer by applying a solution in which an organic semiconductor precursor is dissolved, and a step for forming an organic semiconductor layer by converting the organic semiconductor precursor to an organic semiconductor by exposing the organic semiconductor precursor layer to a discharging gas in a plasma state.
    Type: Application
    Filed: June 23, 2008
    Publication date: July 22, 2010
    Applicant: Konica Minolta Holdings, Inc.
    Inventor: Masakazu Okada
  • Patent number: 7754525
    Abstract: The present invention provides a film forming method of a uniform semiconductor layer having a large area at a low cost and equipment to form said semiconductor layer, by blowing gas against a coated layer to shorten the drying time and to decrease uneven drying. A film forming method of a semiconductor layer characterized by being provided, after a process to coat a semiconductor material containing a solvent on a substrate, with a process to blow gas against a coated layer of a semiconductor layer containing said solvent to evaporate the solvent.
    Type: Grant
    Filed: November 9, 2006
    Date of Patent: July 13, 2010
    Assignee: Konica Minolta Holdings Inc.
    Inventors: Jun Yamada, Masakazu Okada, Mitsuyoshi Miyai
  • Patent number: 7670870
    Abstract: A method of manufacturing an organic thin film transistor characterized by low costs and high performances, the method in which the self-assemble monolayer is formed in a short period of time, and the organic thin film transistor are provided. A method of manufacturing an organic thin film a transistor having a gate electrode, a semiconductor layer, a source electrode, and a drain electrode on a substrate, wherein a semiconductor solution as a mixture of the self-assembled monolayer material and organic semiconductor material is coated between the source electrode and drain electrode, whereby a semiconductor layer is formed.
    Type: Grant
    Filed: May 16, 2007
    Date of Patent: March 2, 2010
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Tomoo Izumi, Masakazu Okada
  • Publication number: 20080230847
    Abstract: The reliability of a semiconductor device having an embedded wire in the lowest layer wire is improved. In a main surface of a semiconductor substrate, MISFETs are formed and over the main surface, insulating films 10, 11 are formed. In the insulating films 10, 11 a contact hole is formed and a plug is embedded therein. Over the insulating film 11 in which the plug is embedded, insulating films 14, 15, 16 are formed and an opening is formed in the insulating films 14, 15, 16 and a wire is embedded therein. The insulating film 15 is an etching stopper film when etching the insulating film 16 in order to form the opening, containing silicon and carbon. The insulating film 11 has a high hygroscopicity and the insulating film 15 has a low moisture resistance, however, by interposing the insulating film 14 therebetween and making the insulating film 14 have a higher density of the number of Si (silicon) atoms than that of the insulating film 11, an electrically weak interface is prevented from being formed.
    Type: Application
    Filed: January 14, 2008
    Publication date: September 25, 2008
    Inventors: Takeshi Furusawa, Takao Kamoshima, Masatsugu Amishiro, Naohito Suzumura, Shoichi Fukui, Masakazu Okada
  • Publication number: 20080076205
    Abstract: A method of manufacturing a donor sheet for transferring a transfer layer having a prescribed shape onto a receiving substrate, wherein: a step for forming an organic semiconductor precursor wherein a solution in which the organic semiconductor precursor which converts to an organic semiconductor due to heat, is coated on a substrate sheet; a step for forming a transfer layer of a prescribed shape by heating the organic semiconductor precursor layer in the prescribed shape to convert the organic semiconductor precursor layer to the organic semiconductor; and a step for removing the organic semiconductor precursor that is not converted to the organic semiconductor are performed in that order.
    Type: Application
    Filed: September 19, 2007
    Publication date: March 27, 2008
    Inventors: Mitsuyoshi Miyai, Masakazu Okada
  • Publication number: 20080054358
    Abstract: A method of manufacturing a thin film including the steps of: providing a film manufacturing apparatus including a first discharge electrode, a second discharge electrode placed opposed to the first discharge electrode and a high frequency power source, which supplies high frequency power between the first discharge electrode and a second discharge electrode; placing a substrate on which a conductive line pattern has been formed on the second discharge electrode; applying the high frequency power from the high frequency power supply while generating plasma by using discharged gas under an atmospheric pressure or a near-atmospheric pressure; and forming a thin film on the substrate, wherein a space ratio (W/L) of a line width W (W>0) of the conductive line pattern to a spatial distance L between the first discharge electrode and the substrate is set not more than 0.1.
    Type: Application
    Filed: August 22, 2007
    Publication date: March 6, 2008
    Inventors: Masakazu OKADA, Yuya HIRAO
  • Publication number: 20070267630
    Abstract: A method of manufacturing an organic thin film transistor characterized by low costs and high performances, the method in which the self-assemble monolayer is formed in a short period of time, and the organic thin film transistor are provided. A method of manufacturing an organic thin film a transistor having a gate electrode, a semiconductor layer, a source electrode, and a drain electrode on a substrate, wherein a semiconductor solution as a mixture of the self-assembled monolayer material and organic semiconductor material is coated between the source electrode and drain electrode, whereby a semiconductor layer is formed.
    Type: Application
    Filed: May 16, 2007
    Publication date: November 22, 2007
    Inventors: Tomoo Izumi, Masakazu Okada
  • Patent number: 7274348
    Abstract: A liquid crystal display apparatus which have a circular polarizer and a liquid crystal display in a stack. The liquid crystal display has a chilral nematic liquid crystal layer between substrates, and on the mutually opposite sides of the substrates, electrodes and aligning layers are formed. The liquid crystal switches between a planar alignment state and a focal-conic alignment state depending on the voltage applied thereto through the electrodes. In a planar state, light reflected by the electrodes is absorbed by the circular polarizer, and a black display is made. In a focal-conic state, light reflected by the electrodes passes through the circular polarizer, and a white display is made.
    Type: Grant
    Filed: June 10, 2004
    Date of Patent: September 25, 2007
    Assignee: Konica Minolta Holdings, Inc.
    Inventors: Tomoo Izumi, Mitsuyoshi Miyai, Jun Yamada, Masakazu Okada, Keiichi Furukawa
  • Publication number: 20070109244
    Abstract: There is provide a low cost liquid display panel with high image quality, the liquid crystal display in which temperature compensation is unnecessary and image quality is not affected by temperature changes of the surrounding environment. In the active matrix cholesteric liquid crystal display panel, the time Tw for applying voltage to the liquid crystal layer at the time of image writing is set so that the variation ?Vs depending on temperature of the writing voltage which makes the liquid crystal layer to show approximate 50% of the maximum reflectance is less than or equal to a predetermined value within a predetermined temperature range.
    Type: Application
    Filed: September 5, 2006
    Publication date: May 17, 2007
    Inventors: Masakazu Okada, Mitsuyoshi Miyai
  • Publication number: 20070111370
    Abstract: The present invention provides a film forming method of a uniform semiconductor layer having a large area at a low cost and equipment to form said semiconductor layer, by blowing gas against a coated layer to shorten the drying time and to decrease uneven drying. A film forming method of a semiconductor layer characterized by being provided, after a process to coat a semiconductor material containing a solvent on a substrate, with a process to blow gas against a coated layer of a semiconductor layer containing said solvent to evaporate the solvent.
    Type: Application
    Filed: November 9, 2006
    Publication date: May 17, 2007
    Inventors: Jun Yamada, Masakazu Okada, Mitsuyoshi Miyai
  • Publication number: 20060197728
    Abstract: This invention can provide a liquid crystal display unit which can employ any liquid crystal material without being limited by its dielectric constant and initialize liquid crystal layer at low voltages. A liquid crystal display unit comprising pixel electrodes which are disposed in a matrix, common electrode and one of electrodes of supplementary capacitor which is opposite to the pixel electrode, liquid crystal layer containing a memory-type liquid crystal material sandwiched between the pixel electrode and the common electrode, and switching elements which respectively turn on and off voltage to pixel electrodes, wherein the liquid crystal display unit changes the states of liquid crystals to perform image erasing, writing, and displaying operations in sequence while driving the common electrode and one of electrodes of the supplementary capacitor so that the electrodes may have an identical potential.
    Type: Application
    Filed: February 22, 2006
    Publication date: September 7, 2006
    Inventors: Mitsuyoshi Miyai, Masakazu Okada
  • Patent number: 6947114
    Abstract: A liquid crystal light modulation element is provided that includes a liquid crystal layer held between a pair of substrates. The liquid crystal layer includes a liquid crystal material that exhibits a cholesteric phase and has a plurality of domains. The liquid crystal layer includes regions where the helical axes of the liquid crystal molecules in a focal conic state extend in regular directions within a plane that is substantially parallel to the surface substrate.
    Type: Grant
    Filed: July 29, 2004
    Date of Patent: September 20, 2005
    Assignee: Minolta Co., Ltd.
    Inventors: Jun Yamada, Masakazu Okada, Kiyofumi Hashimoto, Mitsuyoshi Miyai
  • Publication number: 20050174317
    Abstract: A liquid crystal display apparatus which have a circular polarizer and a liquid crystal display in a stack. The liquid crystal display has a chilral nematic liquid crystal layer between substrates, and on the mutually opposite sides of the substrates, electrodes and aligning layers are formed. The liquid crystal switches between a planar alignment state and a focal-conic alignment state depending on the voltage applied thereto through the electrodes. In a planar state, light reflected by the electrodes is absorbed by the circular polarizer, and a black display is made. In a focal-conic state, light reflected by the electrodes passes through the circular polarizer, and a white display is made.
    Type: Application
    Filed: June 10, 2004
    Publication date: August 11, 2005
    Inventors: Tomoo Izumi, Mitsuyoshi Miyai, Jun Yamada, Masakazu Okada, Keiichi Furukawa
  • Publication number: 20050140864
    Abstract: A liquid crystal display apparatus having a circular polarizer (composed of a linear polarizer and a retardation film), a scattering layer and a liquid crystal display which are stacked one upon another. The liquid crystal display has a chiral nematic liquid crystal layer between substrates, and electrodes and aligning layers are provided on mutually opposite surfaces of the substrates. The chiral nematic liquid crystal changes between a planar state and a focal-conic state in accordance with a voltage applied thereto through the electrodes. When the liquid crystal is in a planar state, light reflected by the electrode formed on the substrate located farther from an observing side is absorbed in the circular polarizer, and a black display is made. When the liquid crystal is in a focal-conic state, light reflected by the electrode formed on the substrate located farther from the observing side passes through the circular polarizer, and a white display is made.
    Type: Application
    Filed: December 21, 2004
    Publication date: June 30, 2005
    Inventors: Mitsuyoshi Miyai, Jun Yamada, Masakazu Okada, Keiichi Furukawa, Tomoo Izumi