Patents by Inventor Masato Doi

Masato Doi 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: 9250456
    Abstract: A display device includes a first substrate, a second substrate, and a plurality of light emitting sections. The first substrate includes a first surface and a second surface which faces the first surface. The second substrate is arranged to face the first substrate, and is configured with a first surface which faces the second surface of the first substrate, and a second surface which faces the first surface. The plurality of light emitting sections is provided on the second surface of the first substrate while being separated from the second substrate. A light transmission suppression layer on which a light transmission section to transmit light from light emitting sections is provided is formed on the second surface of the second substrate in correspondence to each light emitting section. An anti-reflection layer is formed in the light transmission section.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: February 2, 2016
    Assignee: SONY CORPORATION
    Inventors: Katsuhiro Tomoda, Toshiya Takagishi, Izushi Kobayashi, Masaru Fujii, Hiroshi Terahara, Masato Doi, Hisashi Kadota
  • Patent number: 9006968
    Abstract: A mounting substrate includes: a wiring substrate; and a plurality of optical elements mounted on a mounting surface of the wiring substrate, and each having a first electrode and a second electrode. The wiring substrate includes a support substrate, a plurality of first wires, and a plurality of second wires. The first wires and the second wires are provided within a layer between the support substrate and the mounting surface. The first wires are electrically connected with the first electrodes. The second wires are electrically connected with the second electrodes, and each have cross-sectional area larger than cross-sectional area of each of the first wires.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: April 14, 2015
    Assignee: Sony Corporation
    Inventors: Toshihiko Watanabe, Yoichi Ohshige, Masato Doi, Akiyoshi Aoyagi
  • Publication number: 20140291709
    Abstract: A display device includes a first substrate, a second substrate, and a plurality of light emitting sections. The first substrate includes a first surface and a second surface which faces the first surface. The second substrate is arranged to face the first substrate, and is configured with a first surface which faces the second surface of the first substrate, and a second surface which faces the first surface. The plurality of light emitting sections is provided on the second surface of the first substrate while being separated from the second substrate. A light transmission suppression layer on which a light transmission section to transmit light from light emitting sections is provided is formed on the second surface of the second substrate in correspondence to each light emitting section. An anti-reflection layer is formed in the light transmission section.
    Type: Application
    Filed: March 27, 2014
    Publication date: October 2, 2014
    Applicant: Sony Corporation
    Inventors: Katsuhiro Tomoda, Toshiya Takagishi, Izushi Kobayashi, Masaru Fujii, Hiroshi Terahara, Masato Doi, Hisashi Kadota
  • Publication number: 20140235037
    Abstract: A crystal foundation having dislocations is used to obtain a crystal film of low dislocation density, a crystal substrate, and a semiconductor device. One side of a growth substrate (11) is provided with a crystal layer (13) with a buffer layer (12) in between. The crystal layer (13) has spaces (13a), (13b) in an end of each threading dislocation D1 elongating from below. The threading dislocation D1 is separated from the upper layer by the spaces (13a), (13b), so that each threading dislocation D1 is blocked from propagating to the upper layer. When the displacement of the threading dislocation D1 expressed by Burgers vector is preserved to develop another dislocation, the spaces (13a), (13b) vary the direction of its displacement. As a result, the upper layer above the spaces (13a), (13b) turns crystalline with a low dislocation density.
    Type: Application
    Filed: April 23, 2014
    Publication date: August 21, 2014
    Applicant: SONY CORPORATION
    Inventors: Etsuo Morita, Yousuke Murakami, Goshi Biwa, Hiroyuki Okuyama, Masato Doi, Toyoharu Oohata
  • Patent number: 8741451
    Abstract: A crystal foundation having dislocations is used to obtain a crystal film of low dislocation density, a crystal substrate, and a semiconductor device. One side of a growth substrate (11) is provided with a crystal layer (13) with a buffer layer (12) in between. The crystal layer (13) has spaces (13a), (13b) in an end of each threading dislocation D1 elongating from below. The threading dislocation D1 is separated from the upper layer by the spaces (13a), (13b), so that each threading dislocation D1 is blocked from propagating to the upper layer. When the displacement of the threading dislocation D1 expressed by Burgers vector is preserved to develop another dislocation, the spaces (13a), (13b) vary the direction of its displacement. As a result, the upper layer above the spaces (13a), (13b) turns crystalline with a low dislocation density.
    Type: Grant
    Filed: October 23, 2007
    Date of Patent: June 3, 2014
    Assignee: Sony Corporation
    Inventors: Etsuo Morita, Yousuke Murakami, Goshi Biwa, Hiroyuki Okuyama, Masato Doi, Toyoharu Oohata
  • Publication number: 20140008674
    Abstract: A mounting substrate includes: a wiring substrate; and a plurality of optical elements mounted on a mounting surface of the wiring substrate, and each having a first electrode and a second electrode. The wiring substrate includes a support substrate, a plurality of first wires, and a plurality of second wires. The first wires and the second wires are provided within a layer between the support substrate and the mounting surface. The first wires are electrically connected with the first electrodes. The second wires are electrically connected with the second electrodes, and each have cross-sectional area larger than cross-sectional area of each of the first wires.
    Type: Application
    Filed: July 2, 2013
    Publication date: January 9, 2014
    Applicant: SONY CORPORATION
    Inventors: Toshihiko Watanabe, Yoichi Ohshige, Masato Doi, Akiyoshi Aoyagi
  • Patent number: 8476826
    Abstract: A manufacturing method of a display device, includes: a first step of collectively transferring light-emitting elements arranged at every specified number of light-emitting elements formed and arranged on a first substrate to a transfer area set on a second substrate; and a second step of transferring light-emitting elements remaining on the first substrate to between the plural light-emitting elements mounted on the second substrate in at least one of a state where the first substrate is moved with respect to the transfer area on the second substrate and a state where the first substrate is rotated in a plane.
    Type: Grant
    Filed: March 25, 2010
    Date of Patent: July 2, 2013
    Assignee: Sony Corporation
    Inventors: Toyoharu Oohata, Katsuhiro Tomoda, Naoki Hirao, Masato Doi
  • Patent number: 8409886
    Abstract: A method of producing the image display unit, wherein the image display unit includes an array of a plurality of light emitting devices for displaying an image, and wherein the method of producing the image display unit employs, for example, a space expanding transfer, whereby a first transfer step includes transferring the devices arrayed on a first substrate to a temporary holding member such that the devices are spaced from each other with a pitch larger than a pitch of the devices arrayed on the first substrate, a second holding step includes holding the devices on the temporary holding member, and a third transfer step includes transferring the devices held on the temporary holding member onto a second board such that the devices are spaced from each other with a pitch larger than the pitch of the devices held on the temporary holding member.
    Type: Grant
    Filed: November 10, 2006
    Date of Patent: April 2, 2013
    Assignee: Sony Corporation
    Inventors: Toshiaki Iwafuchi, Toyoharu Oohata, Masato Doi
  • Patent number: 8379003
    Abstract: A display device for displaying an image using matrix driving includes: an emission element corresponding to each pixel to be displayed, disposed on L lines, with the scanning direction as lines; a display portion whereby the M lines worth of the emission elements are simultaneously driven; and a connection unit for connecting an on-substrate wiring line extracted from the emission element of the display portion externally; with the connection units including connection terminals for connecting each of the on-substrate wiring lines externally, and at least a part of the connection terminals being arrayed two-dimensionally so as to make up M columns; and with each of the M columns worth of the connection terminals being connected with the on-substrate wiring lines which are thinned out (M?1) wiring lines at a time.
    Type: Grant
    Filed: July 31, 2008
    Date of Patent: February 19, 2013
    Assignee: Sony Corporation
    Inventors: Hidehiro Kawaguchi, Masato Doi, Toshiaki Kanemitsu, Makoto Natori
  • Patent number: 8257538
    Abstract: A device transfer method and a display apparatus are provided. A device transfer method and a display apparatus are provided by or in which, in transferring devices arranged on a substrate onto another substrate, it is possible to easily strip the substrate after the transfer of the devices, to lower the possibility of damaging of the substrate, and to additionally transfer devices onto the same substrate after the transfer of the devices. A plurality of devices arranged on a temporary holding substrate are embedded into and held in a pressure sensitive adhesive layer formed on a transfer substrate, and the devices are stripped from the temporary holding substrate. Other devices are further additionally embedded into the pressure sensitive adhesive layer before hardening the pressure sensitive adhesive layer, whereby the devices can be arranged on a transfer substrate having a large area.
    Type: Grant
    Filed: August 24, 2006
    Date of Patent: September 4, 2012
    Assignee: Sony Corporation
    Inventors: Masato Doi, Katsuhiro Tomoda, Toshihiko Watanabe, Toyoharu Oohata
  • Patent number: 8101457
    Abstract: Provided is a mounting method making it possible to, when an object such as an element, or more particularly, a microscopic object is mounted on a substrate, achieve mounting readily and reliably with high positional precision by: forming an element holding layer 12, which is made of a material whose viscosity can be controlled, on a substrate 11; controlling the viscosity of a first part 12a of the element holding layer 12, which includes a mounting region for an element, into a viscosity making the element naturally movable, and controlling the viscosity of a second part 12b of the element holding layer 12 outside the first part 12a into a viscosity making the element naturally immovable; and after mounting one element 13 in the first part 12a, controlling the viscosity of the first part 12a into the viscosity making the element 13 naturally immovable.
    Type: Grant
    Filed: June 25, 2007
    Date of Patent: January 24, 2012
    Assignee: Sony Corporation
    Inventors: Katsuhiro Tomoda, Masato Doi, Toshiya Takagishi, Toshiaki Kanemitsu
  • Patent number: 7956380
    Abstract: A semiconductor light-emitting device is provided. In an InGaN-based semiconductor light-emitting device including an Ag electrode, a semiconductor layer on the contact side of at least the Ag electrode is a dislocation semiconductor layer of which dislocation density is selected to be less than 1×107 (1/cm2) and thereby short-circuit caused by Ag migration generated along this dislocation can be avoided. Thus, this semiconductor light-emitting device is able to solve a problem of a shortened life and a problem with the fraction of defective devices encountered with the InGaN-based semiconductor light-emitting device.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: June 7, 2011
    Assignee: Sony Corporation
    Inventors: Jun Suzuki, Masato Doi, Goshi Biwa, Hiroyuki Okuyama
  • Patent number: 7888690
    Abstract: An image display unit and a method of producing the image display unit, wherein the image display unit includes an array of a plurality of light emitting devices for displaying an image, and wherein the method of producing the image display unit employs, for example, a space expanding transfer, whereby a first transfer step includes transferring the devices arrayed on a first substrate to a temporary holding member such that the devices are spaced from each other with a pitch larger than a pitch of the devices arrayed on the first substrate, a second holding step includes holding the devices on the temporary holding member, and a third transfer step includes transferring the devices held on the temporary holding member onto a second board such that the devices are spaced from each other with a pitch larger than the pitch of the devices held on the temporary holding member.
    Type: Grant
    Filed: February 20, 2008
    Date of Patent: February 15, 2011
    Assignee: Sony Corporation
    Inventors: Toshiaki Iwafuchi, Toyoharu Oohata, Masato Doi
  • Patent number: 7884543
    Abstract: A method of forming a wiring of a light emitting device having an electrode on a light emission surface is disclosed. The method includes: forming the electrode nearly in a linear shape in which the width is narrower than the light emission surface; and forming a wiring that is connected to the electrode nearly in a linear shape in which the width is narrower than the light emission surface to cross the electrode.
    Type: Grant
    Filed: October 3, 2007
    Date of Patent: February 8, 2011
    Assignee: Sony Corporation
    Inventor: Masato Doi
  • Patent number: 7880184
    Abstract: An image display unit and a method of producing the image display unit, wherein the image display unit includes an array of a plurality of light emitting devices for displaying an image, and wherein the method of producing the image display unit employs, for example, a space expanding transfer, whereby a first transfer step includes transferring the devices arrayed on a first substrate to a temporary holding member such that the devices are spaced from each other with a pitch larger than a pitch of the devices arrayed on the first substrate, a second holding step includes holding the devices on the temporary holding member, and a third transfer step includes transferring the devices held on the temporary holding member onto a second board such that the devices are spaced from each other with a pitch larger than the pitch of the devices held on the temporary holding member.
    Type: Grant
    Filed: April 30, 2003
    Date of Patent: February 1, 2011
    Assignee: Sony Corporation
    Inventors: Toshiaki Iwafuchi, Toyoharu Oohata, Masato Doi
  • Publication number: 20100259164
    Abstract: A manufacturing method of a display device, includes: a first step of collectively transferring light-emitting elements arranged at every specified number of light-emitting elements formed and arranged on a first substrate to a transfer area set on a second substrate; and a second step of transferring light-emitting elements remaining on the first substrate to between the plural light-emitting elements mounted on the second substrate in at least one of a state where the first substrate is moved with respect to the transfer area on the second substrate and a state where the first substrate is rotated in a plane.
    Type: Application
    Filed: March 25, 2010
    Publication date: October 14, 2010
    Applicant: SONY CORPORATION
    Inventors: Toyoharu Oohata, Katsuhiro Tomoda, Naoki Hirao, Masato Doi
  • Patent number: 7795629
    Abstract: A method for manufacturing a light-emitting diode display is provided. The method includes pre-fixing first, second, and third light-emitting diodes on a light emitting unit production substrate to produce light-emitting units each including first, second, and third light-emitting diodes, first electrodes of the first, second, and third light-emitting diodes being connected to a sub-common electrode. The method also includes transferring and fixing the light-emitting units from the light-emitting unit production substrate to a display substrate to produce a light-emitting diode display including the light-emitting units which are arranged in a first direction and a second direction perpendicular to the first direction (i.e., arranged in a two-dimensional matrix).
    Type: Grant
    Filed: April 29, 2009
    Date of Patent: September 14, 2010
    Assignee: Sony Corporation
    Inventors: Toshihiko Watanabe, Masato Doi, Shoichi Muraguchi
  • Patent number: 7795049
    Abstract: Light-emitting devices, light-emitting apparatuses, image display apparatuses and methods of manufacturing same are provided. The devices and apparatuses include a transparent electrode that is connected directly to light output surfaces so as to cover the whole areas of the light output surfaces. The transparent electrode is formed to be larger in area than the light output surfaces, and are securely electrically connected to n-type semiconductor layers including the light output surfaces.
    Type: Grant
    Filed: October 18, 2007
    Date of Patent: September 14, 2010
    Assignee: Sony Corporation
    Inventors: Toshihiko Watanabe, Masato Doi, Nobuaki Sato
  • Patent number: 7744770
    Abstract: A device transfer method is provided. The device transfer method is disclosed by which, when a laser ablation technique is used to selectively exfoliate devices arranged on a substrate, the energy is transmitted efficiently to transfer the devices with a high degree of accuracy and at a high speed. A laser irradiation apparatus is used which includes a laser light source for generating a laser beam, a reflection section for reflecting the laser beam toward a required direction, and a control section for controlling whether or not the laser beam is to be irradiated in an interlocking relationship with the reflection section. The laser beam is selectively irradiated on a plurality of devices arranged on a transfer source substrate to cause laser ablation such that the selected devices are transferred to a transfer destination substrate by the selective laser ablation.
    Type: Grant
    Filed: June 22, 2005
    Date of Patent: June 29, 2010
    Assignee: Sony Corporation
    Inventors: Masato Doi, Toyoharu Oohata
  • Patent number: 7727331
    Abstract: A crystal foundation having dislocations is used to obtain a crystal film of low dislocation density, a crystal substrate, and a semiconductor device. One side of a growth substrate (11) is provided with a crystal layer (13) with a buffer layer (12) in between. The crystal layer (13) has spaces (13a), (13b) in an end of each threading dislocation D1 elongating from below. The threading dislocation D1 is separated from the upper layer by the spaces (13a), (13b), so that each threading dislocation D1 is blocked from propagating to the upper layer. When the displacement of the threading dislocation D1 expressed by Burgers vector is preserved to develop another dislocation, the spaces (13a), (13b) vary the direction of its displacement. As a result, the upper layer above the spaces (13a), (13b) turns crystalline with a low dislocation density.
    Type: Grant
    Filed: January 31, 2007
    Date of Patent: June 1, 2010
    Assignee: Sony Corporation
    Inventors: Etsuo Morita, Yousuke Murakami, Goshi Biwa, Hiroyuki Okuyama, Masato Doi, Toyoharu Oohata