Patents by Inventor Koichiro Tanaka

Koichiro Tanaka 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).

  • Patent number: 8604994
    Abstract: An antenna apparatus includes an antenna element and a parasitic element provided on a first surface of a dielectric substrate, and an antenna element and a parasitic element provided on a second surface of the dielectric substrate. Each of the parasitic elements is provided at a position away from the antenna elements by a distance of one-fourth of an operating wavelength ? in communication.
    Type: Grant
    Filed: October 7, 2009
    Date of Patent: December 10, 2013
    Assignee: Panasonic Corporation
    Inventors: Sotaro Shinkai, Wataru Noguchi, Hiroyuki Yurugi, Akihiko Shiotsuki, Masahiko Nagoshi, Koichiro Tanaka
  • Publication number: 20130323866
    Abstract: If an optical path length of an optical system is reduced and a length of a laser light on an irradiation surface is increased, there occurs curvature of field which is a phenomenon that a convergent position deviates depending on an incident angle or incident position of a laser light with respect to a lens. To avoid this phenomenon, an optical element having a negative power such as a concave lens or a concave cylindrical lens is inserted to regulate the optical path length of the laser light and a convergent position is made coincident with a irradiation surface to form an image on the irradiation surface.
    Type: Application
    Filed: August 9, 2013
    Publication date: December 5, 2013
    Applicant: Semiconductor Energy Laboratory Co., LTD.
    Inventors: Koichiro TANAKA, Tomoaki MORIWAKA
  • Patent number: 8593059
    Abstract: The lighting device includes a layer containing a light-emitting organic compound which is provided over a substrate; a first barrier layer covering the layer containing a light-emitting organic compound; a second barrier layer provided over the first barrier layer; a sealant provided between the first barrier layer and the second barrier layer; a resin layer including a desiccant which is surrounded by the first barrier layer, the second barrier layer, and the sealant; and a resin substrate which is provided over the second barrier layer and has a first uneven structure on a surface in contact with the second barrier layer and a second uneven structure on a surface in contact with the air, and the second uneven structure has a larger height difference than the first uneven structure.
    Type: Grant
    Filed: February 13, 2012
    Date of Patent: November 26, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Yusuke Nishido
  • Patent number: 8581234
    Abstract: Part of a material layer is deposited on a deposition target surface of a second substrate by steps of providing a first substrate having a light absorption layer and a material layer in contact with the light absorption layer over one of surfaces; making a surface of the first substrate over which the material layer is formed and a deposition target surface of a second substrate face to each other; depositing part of the material layer on the deposition target surface of the second substrate in such a manner that irradiation with laser light of which repetition rate is greater than or equal to 10 MHz and pulse width is greater than or equal to 100 fs and less than or equal to 10 ns is performed from the other surface side of the first substrate to selectively heat part of the material layer overlapping with the light absorption layer.
    Type: Grant
    Filed: February 24, 2009
    Date of Patent: November 12, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Koichiro Tanaka, Takahiro Ibe, Satoshi Seo
  • Patent number: 8580700
    Abstract: To provide a method for manufacturing a semiconductor device using a method in which a desired position is rapidly subjected to laser irradiation while switching laser irradiation patterns. With respect to an organic memory element having a structure in which an organic compound layer is interposed between a pair of conductive layers, data is written to the organic memory element by laser irradiation using a laser irradiation apparatus. Further, a laser beam emitted from a laser oscillator is split by a diffractive optical element into a plurality of laser beams, thereby irradiating a plurality of portions on the organic compound layer with laser beams by single irradiation.
    Type: Grant
    Filed: February 5, 2007
    Date of Patent: November 12, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Hirotada Oishi
  • Patent number: 8574976
    Abstract: A TFT having a high threshold voltage is connected to the source electrode of each TFT that constitutes a CMOS circuit. In another aspect, pixel thin-film transistors are constructed such that a thin-film transistor more distant from a gate line drive circuit has a lower threshold voltage. In a further aspect, a control film that is removable in a later step is formed on the surface of the channel forming region of a TFT, and doping is performed from above the control film.
    Type: Grant
    Filed: October 14, 2010
    Date of Patent: November 5, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Naoto Kusumoto, Hideto Ohnuma, Koichiro Tanaka
  • Patent number: 8558341
    Abstract: An object is to provide a photoelectric conversion element with high conversion efficiency. In a photoelectric conversion element with a fine periodic structure on a light-receiving surface side, focus is given to the traveling direction of light that is reflected off another surface. The photoelectric conversion element may be given a structure in which a textured structure that reflects light to the other surface is provided, and light that travels from the light-receiving surface side to the other surface side is reflected so that a component that travels along the photoelectric conversion layer increases. By the distance traveled by the reflected light inside the photoelectric conversion layer increasing, the light that enters the photoelectric conversion element is more easily absorbed by the photoelectric conversion layer and less easily released from the light-receiving surface side, and a photoelectric conversion element with high conversion efficiency can be provided.
    Type: Grant
    Filed: December 13, 2011
    Date of Patent: October 15, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Fumito Isaka, Jiro Nishida
  • Patent number: 8553550
    Abstract: A wireless transmission device includes a wireless transmitting and receiving unit having an antenna that transmits and receives data wirelessly; a Transmission Control Protocol (TCP) buffer in which the data that is to be transmitted and has been received by the wireless transmitting and receiving unit is temporarily stored; and an antenna control unit that controls the wireless transmitting and receiving unit to improve communication quality of the antenna, when it is determined that a data amount stored in the TCP buffer falls below a threshold value.
    Type: Grant
    Filed: August 26, 2009
    Date of Patent: October 8, 2013
    Assignee: Panasonic Corporation
    Inventors: Akihiko Shiotsuki, Koichiro Tanaka
  • Patent number: 8546210
    Abstract: It is an object of the present invention to provide a method of separating a thin film transistor, and circuit or a semiconductor device including the thin film transistor from a substrate by a method different from that disclosed in the patent document 1 and transposing the thin film transistor, and the circuit or the semiconductor device to a substrate having flexibility. According to the present invention, a large opening or a plurality of openings is formed at an insulating film, a conductive film connected to a thin film transistor is formed at the opening, and a peeling layer is removed, then, a layer having the thin film transistor is transposed to a substrate provided with a conductive film or the like. A thin film transistor according to the present invention has a semiconductor film which is crystallized by laser irradiation and prevents a peeling layer from exposing at laser irradiation not to be irradiated with laser light.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: October 1, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiaki Yamamoto, Koichiro Tanaka, Atsuo Isobe, Daisuke Ohgarane, Shunpei Yamazaki
  • Publication number: 20130240257
    Abstract: Provided is a copper foil for a printed wiring board, the copper foil being suitable for achieving finer pitch, favorable in terms of manufacturing cost, and excellent both in etching ability and adhesion to an insulating substrate. The copper foil for a printed wiring board comprises a copper foil base material and a covering layer for covering at least a portion of a surface of the copper foil base material, wherein the covering layer is formed by an nickel-vanadium alloy layer containing nickel and vanadium, and a chromium layer, laminated in this order from the surface of the copper foil base material; the chromium layer contains chromium in an amount of 15-210 ?g/dm2; the nickel-vanadium alloy layer contains nickel and vanadium in a combined covering amount of 20-600 ?g/dm2; and the nickel-vanadium alloy layer contains vanadium in an amount of 3-70 wt %.
    Type: Application
    Filed: November 17, 2010
    Publication date: September 19, 2013
    Applicant: JX NIPPON MINING & METALS CORPORATION
    Inventors: Koichiro Tanaka, Misato Chuganji
  • Patent number: 8530788
    Abstract: In the present invention, each laser light emitted from a plurality of lasers is divided, and laser light including at least one laser light that is emitted from a different laser and that has different energy distribution is synthesized with another such laser light, or laser light including at least one laser light that has different energy distribution is synthesized with another such laser light through a convex lens that is set at an angle to the direction each laser light travels, to form laser light having excellent uniformity in energy distribution.
    Type: Grant
    Filed: June 15, 2004
    Date of Patent: September 10, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Tomoaki Moriwaka
  • Patent number: 8525075
    Abstract: The present invention is to provide a laser irradiation apparatus for forming a laser beam which has a shape required for the annealing and which has homogeneous energy distribution, by providing a slit at an image-formation position of a diffractive optical element, wherein the slit has a slit opening whose length is changeable. The laser irradiation apparatus comprises a laser oscillator, a diffractive optical element, and a slit, wherein the slit has a slit opening whose length in a major-axis direction thereof is changeable, wherein a laser beam is delivered obliquely to a substrate, and wherein the laser beam is a continuous wave solid-state, gas, or metal laser, or a pulsed laser with a repetition frequency of 10 MHz or more.
    Type: Grant
    Filed: May 4, 2005
    Date of Patent: September 3, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Koichiro Tanaka
  • Patent number: 8525070
    Abstract: A laser irradiation apparatus is provided with a laser oscillator, an articulated beam propagator in which a plurality of pipes are connected to each other in an articulated portion, and a course change means of a laser beam in the articulated portion. At least one pipe of the plurality of pipes includes a transfer lens for suppressing stagger of a laser beam in a traveling direction, in each pipe. The articulated portion produces degree of freedom in disposition of a laser oscillator, and the transfer lens enables suppression of change in beam profile.
    Type: Grant
    Filed: December 15, 2006
    Date of Patent: September 3, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Yoshiaki Yamamoto
  • Patent number: 8507334
    Abstract: If an optical path length of an optical system is reduced and a length of a laser light on an irradiation surface is increased, there occurs curvature of field which is a phenomenon that a convergent position deviates depending on an incident angle or incident position of a laser light with respect to a lens. To avoid this phenomenon, an optical element having a negative power such as a concave lens or a concave cylindrical lens is inserted to regulate the optical path length of the laser light and a convergent position is made coincident with a irradiation surface to form an image on the irradiation surface.
    Type: Grant
    Filed: August 26, 2002
    Date of Patent: August 13, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Tomoaki Moriwaka
  • Patent number: 8497490
    Abstract: A terahertz wave generation device is provided with an ultra-short pulse laser light source (3) for generating ultra-short pulse laser light at a single repeating frequency and optical fibers (F1 to F5) for respective transmitting and projecting of the ultra-short pulse laser light to an LN crystal (15). Projection units (13) of the optical fibers (F1 to F5) are made parallel to irradiate the ultra-short pulse laser light (L) projected from the projection units (13), respectively, on terahertz transmission line (A) in the LN crystal (15) with sequential delays. The optical lengths of the transmission paths of the optical fibers (F1 to F5) are set longer as the transmission paths go closer to one side of the parallel direction of the projection units (13).
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: July 30, 2013
    Assignee: Aisin Seiki Kabushiki Kaisha
    Inventors: Hideyuki Ohtake, Yuzuru Uehara, Koichiro Tanaka, Masaya Nagai
  • Patent number: 8492248
    Abstract: A surface of a single crystal semiconductor substrate is irradiated with ions to form a damaged region, an insulating layer is formed over the surface of the single crystal semiconductor substrate, and a surface of a substrate having an insulating surface is made to be in contact with a surface of the insulating layer to bond the substrate having an insulating surface to the single crystal semiconductor substrate. Then, the single crystal semiconductor substrate is separated at the damaged region by performing heat treatment to form a single crystal semiconductor layer over the substrate having an insulating surface, and the single crystal semiconductor layer is patterned to form a plurality of island-shaped semiconductor layers. One of the island-shaped semiconductor layers is irradiated with a laser beam which is shaped to entirely cover the island-shaped semiconductor layer.
    Type: Grant
    Filed: March 4, 2011
    Date of Patent: July 23, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Koichiro Tanaka
  • Patent number: 8486736
    Abstract: A method for manufacturing a light-emitting device is provided, which includes a step of forming a light-absorbing layer including an unevenness portion over a first substrate, a step of forming a first organic compound layer over the light-absorbing layer, a step of providing a second substrate over the first substrate with the light-absorbing layer and the first organic compound layer interposed therebetween, and a step of irradiating the light-absorbing layer with light to deposit a second organic compound layer including a material contained in the first organic compound layer onto the second substrate.
    Type: Grant
    Filed: October 14, 2009
    Date of Patent: July 16, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kohei Yokoyama, Koichiro Tanaka, Hisao Ikeda
  • Patent number: 8455790
    Abstract: To provide a laser irradiation apparatus and a laser irradiation method in which a region formed with microcrystals in a region irradiated with laser beams is decreased by disposing a slit in an optical system using a deflector, and laser processing can be favorably conducted to a semiconductor film. Further to provide a semiconductor manufacturing apparatus using the above-described laser irradiation apparatus and the laser irradiation method. In the optical system, an f-? lens having an image space telecentric characteristic or a slit the shape of which is changed in accordance with the incidence angle of a laser beam, is used. The slit is disposed between the f-? lens and an irradiation surface, and an image at a slit opening portion is projected onto the irradiation surface by a projection lens. By the above-described structure, laser irradiation can be uniformly conducted to a whole region scanned with laser beams.
    Type: Grant
    Filed: December 11, 2006
    Date of Patent: June 4, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Hirotada Oishi
  • Patent number: 8456083
    Abstract: One object is to provide a lighting device having a large irradiation range at low cost. One object is to provide a lighting device with improved light extraction efficiency at low cost. The lighting device includes a light-transmitting base, a first light-transmitting electrode formed over almost the whole area of a surface of the light-transmitting base, an EL layer over the first light-transmitting electrode, and a second electrode over the EL layer. The light-transmitting base has a cylindrical shape, a conical shape, a prismatic shape, or a pyramidal shape whose bottom surface is the surface of the light-transmitting base.
    Type: Grant
    Filed: July 26, 2012
    Date of Patent: June 4, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Takatsugu Omata
  • Patent number: 8457463
    Abstract: The present invention provides a beam homogenizer being able to form a rectangular beam spot having homogeneous energy distribution in a direction of its major axis without using the optical lens requiring to be manufactured with high accuracy. In addition, the present invention provides a laser irradiation apparatus being able to irradiate the laser beam having homogeneous energy distribution in a direction of its major axis. Furthermore, the present invention provides a method for manufacturing a semiconductor device being able to enhance crystallinity in the surface of the substrate and to manufacture TFT with a high operating characteristic. The beam homogenizer, one of the present invention, is to shape the beam spot on the surface to be irradiated into a rectangular spot having an aspect ratio of 10 or more, preferably 100 or more, and comprises an optical waveguide for homogenizing the energy distribution of the rectangular beam spot in the direction of its major axis.
    Type: Grant
    Filed: May 26, 2011
    Date of Patent: June 4, 2013
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Koichiro Tanaka, Tomoaki Moriwaka