Patents by Inventor Ryoji Nomura

Ryoji Nomura 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).

  • Semiconductor device
    Patent number: 8295104
    Abstract: It is an object of the present invention to provide a volatile organic memory in which data can be written other than during manufacturing and falsification by rewriting can be prevented, and to provide a semiconductor device including such an organic memory. It is a feature of the invention that a semiconductor device includes a plurality of bit lines extending in a first direction; a plurality of word lines extending in a second direction different from the first direction; a memory cell array including a plurality of memory cells each provided at one of intersections of the bit lines and the word lines; and memory elements provided in the memory cells, wherein the memory elements include bit lines, an organic compound layer, and the word lines, and the organic compound layer includes a layer in which an inorganic compound and an organic compound are mixed.
    Type: Grant
    Filed: November 13, 2009
    Date of Patent: October 23, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroko Abe, Mikio Yukawa, Tamae Takano, Yoshinobu Asami, Kiyoshi Kato, Ryoji Nomura, Yoshitaka Moriya
  • Semiconductor device having light-emitting element and light-receiving element for transmitting among circuits formed over the plurality of substrates
    Patent number: 8283679
    Abstract: The present invention provides a semiconductor device having an integrated circuit formed by a low cost glass substrate, which can respond to the increase of an amount of information, and which offers high performance at high speed.
    Type: Grant
    Filed: June 29, 2004
    Date of Patent: October 9, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Ryoji Nomura, Hiroko Abe, Mikio Yukawa, Yasuyuki Arai
  • Stilbene Derivatives, Light-Emitting Element and Light-Emitting Device
    Publication number: 20120235130
    Abstract: The present invention provides a novel substance having an excellent color purity of blue, a light-emitting element and a light-emitting device using the novel substance. A stilbene derivative has a structure shown by the general formula (1). In the general formula (1), R1 is hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms. R2 is an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 25 carbon atoms. Each of R3 to R5 is hydrogen or an alkyl group having 1 to 4 carbon atoms. Ar1 is an aryl group having 6 to 25 carbon atoms.
    Type: Application
    Filed: June 4, 2012
    Publication date: September 20, 2012
    Inventors: Masakazu Egawa, Harue Nakashima, Sachiko Kawakami, Nobuharu Ohsawa, Satoshi Seo, Ryoji Nomura
  • Light-Emitting Element, Light-Emitting Device, and Electronic Device
    Publication number: 20120217489
    Abstract: The light-emitting element includes: a light-emitting layer and a layer for controlling the movement of carriers between a first electrode and a second electrode. The layer for controlling the movement of carriers contains a first organic compound and a second organic compound, and is provided between the light-emitting layer and the second electrode. The first organic compound has an electron transporting property, and the second organic compound has an electron trapping property. The weight percent of the first organic compound is higher than that of the second organic compound. The light-emitting layer emits light when a voltage is applied such that the potential of the first electrode is higher than that of the second electrode.
    Type: Application
    Filed: April 3, 2012
    Publication date: August 30, 2012
    Inventors: Tsunenori Suzuki, Satoshi Seo, Ryoji Nomura
  • Quinoxaline Derivative, and Light Emitting Element, Light Emitting Device, and Electronic Appliance Using the Same
    Publication number: 20120211738
    Abstract: A quinoxaline derivative expressed by the general formula (1) is provided. (Each of R1 to R12 represents one of a hydrogen atom, a halogen atom, an alkyl group, an alkoxyl group, an acyl group, a dialkyl amino group, a diarylamino group, a substituted or unsubstituted vinyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heterocycle group. Ar1 represents one of a substituted or unsubstituted biphenyl group and a substituted or unsubstituted terphenyl group, and Ar2 represents one of a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, and a substituted or unsubstituted monocyclic heterocycle group.
    Type: Application
    Filed: May 3, 2012
    Publication date: August 23, 2012
    Inventors: Masakazu Egawa, Sachiko Kawakami, Nobuharu Ohsawa, Hideko Inoue, Satoshi Seo, Ryoji Nomura
  • Memory element and semiconductor device
    Patent number: 8247802
    Abstract: To provide a memory element, a memory device, and a semiconductor device, which can be easily manufactured at low cost; are nonvolatile and data-rewritable; and have preferable switching properties and low operating voltage. A memory element of the invention includes a first conductive layer, a second conductive layer facing the first conductive layer, and an organic compound layer provided between the first and the second conductive layers. For the organic compound layer, a high molecular material having an amide group at least at one kind of side chains is used.
    Type: Grant
    Filed: April 21, 2006
    Date of Patent: August 21, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryoji Nomura, Tamae Takano, Takehisa Hatano
  • Memory device and manufacturing method the same
    Patent number: 8238152
    Abstract: A semiconductor device that can transmit and receive data without contact is popular partly as some railway passes, electronic money cards, and the like; however, it has been a prime task to provide an inexpensive semiconductor device for further popularization. In view of the above current conditions, a semiconductor device of the present invention includes a memory with a simple structure for providing an inexpensive semiconductor device and a manufacturing method thereof. A memory element included in the memory includes a layer containing an organic compound, and a source electrode or a drain electrode of a TFT provided in the memory element portion is used as a conductive layer which forms a bit line of the memory element.
    Type: Grant
    Filed: February 24, 2010
    Date of Patent: August 7, 2012
    Assignee: Semiconductor Energy Laboratory Co. Ltd.
    Inventors: Yoshinobu Asami, Tamae Takano, Masayuki Sakakura, Ryoji Nomura, Shunpei Yamazaki
  • Quinoxaline derivative, and organic semiconductor device, electric field light emitting device, and electronic device which have the same
    Patent number: 8231984
    Abstract: Target is to provide an organic compound material having a bipolar character. A quinoxaline derivative represented by a general formula (1) is provided. In the formula, R1-R12 each independently represents a hydrogen atom, a halogen atom, a lower alkyl group, an alkoxy group, an acyl group, a nitro group, a cyano group, an amino group, a dialkylamino group, a diarylamino group, a vinyl group, an aryl group, or a heterocyclic residue group. R9 and R10, R10 and R11, and R11 and R12 are each independent or respectively mutually bonded to form an aromatic ring. Ar1-Ar4 each independently represents an aryl group or a heterocyclic residue group. Ar1, Ar2, Ar3 and Ar4 are each independent or Arl and Ar2, and Ar3 and Ar4 are respectively mutually bonded directly, or Ar1 and Ar3, and Ar3 and Ar4 are bonded via oxygen (O), sulfur (S) or a carbonyl group.
    Type: Grant
    Filed: September 11, 2009
    Date of Patent: July 31, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Satoko Shitagaki, Atsushi Tokuda, Hiroko Abe, Ryoji Nomura, Satoshi Seo
  • Light-emitting element, light-emitting device, and electronic appliance
    Patent number: 8227982
    Abstract: An object of the present invention is to provide a light-emitting element with high luminous efficiency, and a light-emitting element of low-voltage driving. Another object is to provide a light-emitting device with low power consumption by using the light-emitting element. Another object is to provide an electronic appliance with low power consumption by using the light-emitting device in a display portion. A light-emitting element includes, between a pair of electrodes, a layer containing a composite material of a first organic compound and an inorganic compound and a layer containing a second organic compound being in contact with the layer containing the composite material, wherein the second organic compound does not have a peak of an absorption spectrum in a wavelength region of 450 to 800 nm if the second organic compound is compounded with the inorganic compound.
    Type: Grant
    Filed: July 19, 2006
    Date of Patent: July 24, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yuji Iwaki, Junichiro Sakata, Hisao Ikeda, Tomoya Aoyama, Takaaki Nagata, Takahiro Kawakami, Satoshi Seo, Ryoji Nomura
  • Semiconductor device and driving method of the same
    Patent number: 8223531
    Abstract: The present invention provides a semiconductor device including a memory that has a memory cell array including a plurality of memory cells, a control circuit that controls the memory, and an antenna, where the memory cell array has a plurality of bit lines extending in a first direction and a plurality of word lines extending in a second direction different from the first direction, and each of the plurality of memory cells has an organic compound layer provided between the bit line and the word line. Data is written by applying optical or electric action to the organic compound layer.
    Type: Grant
    Filed: June 2, 2011
    Date of Patent: July 17, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryoji Nomura, Hiroko Abe, Yuji Iwaki, Shunpei Yamazaki
  • Stilbene Derivatives, Light-Emitting Element, Display Device, and Electronic Device
    Publication number: 20120168741
    Abstract: A novel stilbene derivative is provided with motivation of providing a blue emissive material showing excellent color purity. The use of the stilbene derivative of the present invention allows the fabrication of a blue-emissive light-emitting element with excellent color purity. The invention also includes an electronic device equipped with a display portion in which the stilbene derivative is employed. The stilbene derivative of the present invention is represented by formula (1), in which Ar1 and Ar2 may form a 5-membered ring by being directly bonded to each other. In formula (1), A11 represents any one of substituents represented by general formulas (1-1) to (1-3). The variables shown in formula (1) and (1-1) to (1-3) are as defined in the specification.
    Type: Application
    Filed: March 10, 2012
    Publication date: July 5, 2012
    Inventors: Masakazu Egawa, Harue Osaka, Sachiko Kawakami, Nobuharu Ohsawa, Satoshi Seo, Ryoji Nomura
  • Manufacturing method of emitting device
    Patent number: 8211492
    Abstract: The present invention is a fabrication method of a light-emitting device characterized by ejecting a solution containing a luminescent material toward an anode or a cathode under a reduced pressure and characterized in that in a duration before the solution is arrived at the anode or the cathode, the solvent in the solution is volatilized, the remaining part of the luminescent material is deposited on the anode or the cathode, and thereby formed a light-emitting layer. By the present invention, a baking process for thickness reduction is not required after applying the solution. Accordingly, it is possible to provide a fabrication method with high throughput although the method is low in cost and simple.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: July 3, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Masakazu Murakami, Ryoji Nomura, Satoshi Seo
  • Stilbene derivatives, light-emitting element and light-emitting device
    Patent number: 8193701
    Abstract: The present invention provides a novel substance having an excellent color purity of blue, a light-emitting element and a light-emitting device using the novel substance. A stilbene derivative has a structure shown by the general formula (1). In the general formula (1), R1 is hydrogen, an alkyl group having 1 to 4 carbon atoms, or an aryl group having 6 to 25 carbon atoms. R2 is an alkyl group having 1 to 4 carbon atoms or an aryl group having 6 to 25 carbon atoms. Each of R3 to R5 is hydrogen or an alkyl group having 1 to 4 carbon atoms. Ar1 is an aryl group having 6 to 25 carbon atoms.
    Type: Grant
    Filed: February 28, 2011
    Date of Patent: June 5, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masakazu Egawa, Harue Nakashima, Sachiko Kawakami, Nobuharu Ohsawa, Satoshi Seo, Ryoji Nomura
  • Acenaphthoquinoxaline derivative, light-emitting element, light-emitting device, and electronic device
    Patent number: 8187730
    Abstract: An acenaphthoquinoxaline derivative represented by a general formula (G1) is provided. The acenaphthoquinoxaline derivative represented by the general formula (G1) easily receives electrons and has an electron-transporting property. Therefore, the acenaphthoquinoxaline derivative can be suitably used for a light-emitting element.
    Type: Grant
    Filed: March 20, 2009
    Date of Patent: May 29, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Ryoji Nomura, Takako Takasu, Satoko Shitagaki, Tsunenori Suzuki, Satoshi Seo
  • Method for Collecting Metal
    Publication number: 20120125853
    Abstract: It is an object of the present invention to collect a scarce metal such as iridium from a light-emitting element which is no longer used. A method for collecting a metal is provided in which an organic metal compound which can emit visible light from a triplet excited state at room temperature is heated, or an EL layer of a light-emitting layer containing an organic metal compound which can emit visible light from a triplet excited state at room temperature is dissolved in a solvent to form a solution, and the solution is heated, irradiated with microwaves or treated with acid water. According to the above method, resources of metals such as iridium or platinum, which are scarce metals, can be utilized efficiently.
    Type: Application
    Filed: February 3, 2012
    Publication date: May 24, 2012
    Inventors: Ryoji Nomura, Satoshi Seo, Hideko Inoue, Kaoru Kato
  • Anthracene Derivative, and Light-Emitting Element, Light-Emitting Device, Electronic Device Using Anthracene Derivative
    Publication number: 20120126215
    Abstract: An object is to provide a novel anthracene derivative. Another object is to provide a light-emitting element with high luminous efficiency. Yet another object is to provide a light-emitting element with a long lifetime. Still another object is to provide a light-emitting device and an electronic device having a long lifetime by using the light-emitting elements of the present invention. The anthracene derivative represented by General Formula (1) is provided. The ability of the anthracene derivative represented by General Formula (1) to exhibit high luminous efficiency allows the production of a light-emitting element with high luminous efficiency and a long lifetime.
    Type: Application
    Filed: January 27, 2012
    Publication date: May 24, 2012
    Inventors: Masakazu EGAWA, Harue NAKASHIMA, Sachiko KAWAKAMI, Tsunenori SUZUKI, Ryoji NOMURA
  • Quinoxaline derivative, and light-emitting element, light-emitting device, and electronic device including quinoxaline derivative
    Patent number: 8178216
    Abstract: An object of the present invention is to provide a quinoxaline derivative represented by a general formula (1). Ar1 represents one of a substituted or unsubstituted biphenyl group, and a substituted or unsubstituted terphenyl group; Ar2 represents one of a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, and a substituted or unsubstituted terphenyl group; ?1 represents an arylene group having 6 to 25 carbon atoms; and R11 to R15 are the same or different from one another, and each of them represents any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 25 carbon atoms.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: May 15, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hiroko Nomura, Sachiko Kawakami, Nobuharu Ohsawa, Ryoji Nomura, Satoshi Seo
  • Quinoxaline derivative, and light-emitting element, light-emitting device, and electronic appliance using the same
    Patent number: 8173277
    Abstract: A quinoxaline derivative expressed by the general formula (1) is provided. (Each of R1 to R12 represents one of a hydrogen atom, a halogen atom, an alkyl group, an alkoxyl group, an acyl group, a dialkyl amino group, a diarylamino group, a substituted or unsubstituted vinyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heterocycle group. Ar1 represents one of a substituted or unsubstituted biphenyl group and a substituted or unsubstituted terphenyl group, and Ar2 represents one of a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted terphenyl group, and a substituted or unsubstituted monocyclic heterocycle group.
    Type: Grant
    Filed: March 7, 2011
    Date of Patent: May 8, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Masakazu Egawa, Sachiko Kawakami, Nobuharu Ohsawa, Hideko Inoue, Satoshi Seo, Ryoji Nomura
  • SEMICONDUCTOR DEVICE AND METHOD FOR MANUFACTURING THE SAME
    Publication number: 20120108029
    Abstract: It is an object of the present invention to provide a technique in which a high-performance and high reliable memory device and a semiconductor device provided with the memory device are manufactured at low cost with high yield. The semiconductor device includes an organic compound layer including an insulator over a first conductive layer and a second conductive layer over the organic compound layer including an insulator. Further, the semiconductor device is manufactured by forming a first conductive layer, discharging a composition of an insulator and an organic compound over the first conductive layer to form an organic compound layer including an insulator, and forming a second conductive layer over the organic compound layer including an insulator.
    Type: Application
    Filed: November 14, 2011
    Publication date: May 3, 2012
    Applicant: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Mikio YUKAWA, Nobuharu OHSAWA, Ryoji NOMURA, Yoshinobu ASAMI
  • Light-Emitting Element and Display Device
    Publication number: 20120061653
    Abstract: When a light-emitting element having an intermediate conductive layer between a plurality of light-emitting layers is formed, the intermediate conductive layer can have transparency; and thus, materials are largely limited and the manufacturing process of an element becomes complicated by a conventional method. A light-emitting element according to the present invention is formed by sequentially stacking a pixel electrode, a first light-emitting layer, an intermediate conductive layer (including an electron injecting layer and a hole-injecting layer, one of which is island-like), a second light-emitting layer and an opposite electrode.
    Type: Application
    Filed: September 12, 2011
    Publication date: March 15, 2012
    Inventors: Shunpei Yamazaki, Ryoji Nomura, Satoshi Seo, Hiroko Abe, Yasuo Nakamura