Patents by Inventor Tokiyoshi Umeda

Tokiyoshi Umeda 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: 20150138783
    Abstract: A light diffusing member includes a base material having a light transmitting property; a plurality of light blocking sections that are formed in a scattered manner at one surface of the base material; and a light transmissive material layer that is formed at the one surface of the base material. A thickness of the light transmissive material layer is larger than a thickness of each light blocking section. The light transmissive material layer has hollow portions in regions where the light blocking sections are formed. Each hollow portion has a shape in which a cross-section area when each hollow portion is cut at a plane that is parallel to the one surface of the base material is large on a side of the corresponding light blocking section and becomes gradually smaller with increasing distance from the corresponding light blocking section. A portion of the light transmissive material layer other than where the hollow portions are formed is a light transmitting section.
    Type: Application
    Filed: December 2, 2014
    Publication date: May 21, 2015
    Inventors: Tokiyoshi UMEDA, Hidefumi YOSHIDA, Emi YAMAMOTO, Toru KANNO, Tsuyoshi MAEDA, Tsuyoshi KAMADA
  • Publication number: 20150034158
    Abstract: A solar cell module capable of suppressing a decrease of a light gathering function with use and offering an excellent light gathering function over a long period of time, and a photovoltaic power generation device using the solar cell module are provided. A solar cell module 1 includes a light gathering member 2 formed of a fluorescent material 7 provided in a transparent base material 6, the light gathering member 2 absorbing external light by the fluorescent material 7 and causing emitted light to propagate to be emitted from an end face 2c, and a solar cell element 3 installed on the end face 2c of the light gathering member 2, the solar cell element 3 receiving the light and generating electric power.
    Type: Application
    Filed: February 14, 2013
    Publication date: February 5, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Hideki Uchida, Hideomi Yui, Tokiyoshi Umeda
  • Patent number: 8926157
    Abstract: A light diffusing member includes a base material having a light transmitting property; a plurality of light blocking sections that are formed in a scattered manner at one surface of the base material; and a light transmissive material layer that is formed at the one surface of the base material. A thickness of the light transmissive material layer is larger than a thickness of each light blocking section. The light transmissive material layer has hollow portions in regions where the light blocking sections are formed. Each hollow portion has a shape in which a cross-section area when each hollow portion is cut at a plane that is parallel to the one surface of the base material is large on a side of the corresponding light blocking section and becomes gradually smaller with increasing distance from the corresponding light blocking section. A portion of the light transmissive material layer other than where the hollow portions are formed is a light transmitting section.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: January 6, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tokiyoshi Umeda, Hidefumi Yoshida, Emi Yamamoto, Toru Kanno, Tsuyoshi Maeda, Tsuyoshi Kamada
  • Publication number: 20140318601
    Abstract: A light guide body includes a light-entering surface which outside light enters, one or more outside light-absorbing optical functional materials that absorb part of the outside light which enters the light-entering surface, a light-guiding optical functional material that is excited by energy of light absorbed by the one or more outside light-absorbing optical functional materials and that emits light different from the light, and a light-emitting surface whose area is smaller than the light-entering surface and from which the light emitted from the light-guiding optical functional material is emitted. A mixing ratio of the light-guiding optical functional material is smaller than a mixing ratio of at least an optical functional material having a largest mixing ratio among the one or more outside light-absorbing optical functional materials.
    Type: Application
    Filed: November 20, 2012
    Publication date: October 30, 2014
    Inventors: Hideki Uchida, Tokiyoshi Umeda, Hideomi Yui
  • Publication number: 20140318621
    Abstract: A solar cell module includes a light guide and a solar cell element. The light guide has a light incident surface and a light exit surface having an area smaller than the light incident surface and contains a plurality of optical functional materials. In the light guide, part of external light incident on the light incident surface is absorbed by the plurality of optical functional materials, Foerster energy transfer occurs among the plurality of optical functional materials, and light emitted by the optical functional material having the longest peak wavelength of the emission spectrum among the plurality of optical functional materials is collected to and exits from the light exit surface. The solar cell element receives light exiting from the light exit surface of the light guide.
    Type: Application
    Filed: September 19, 2012
    Publication date: October 30, 2014
    Inventors: Tokiyoshi UMEDA, Hideki UCHIDA, Hideomi YUI
  • Patent number: 8651912
    Abstract: An anode 2 is formed on an element substrate 1. By using a film-forming solution containing a stacking material that forms an organic layer 43, a film is formed on a donor substrate 10 to form a transfer layer 11, thereby fabricating a transfer substrate 12. The transfer substrate 12 and the element substrate 1 are placed so as to face each other with spacers 13 interposed therebetween, such that the surface of the transfer substrate 12, which has the transfer layer 11 formed thereon, faces the element substrate 1 having the anode 2 formed thereon. The transfer substrate 12 and the element substrate 1 facing each other are held under vacuum conditions. The transfer substrate 12 is heated by the heat source 15 under the vacuum conditions to transfer the transfer layer 11 to the element substrate 1.
    Type: Grant
    Filed: June 3, 2010
    Date of Patent: February 18, 2014
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hideki Uchida, Tokiyoshi Umeda, Tohru Sonoda
  • Publication number: 20140026962
    Abstract: A solar cell module includes a light guide body that guides incident light to propagate therein, and a solar cell element that receives the light propagating within the light guide body, wherein the light guide body is made of a light-transmissive base material and has a curved surface in at least a part thereof.
    Type: Application
    Filed: April 9, 2012
    Publication date: January 30, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tsuyoshi Kamada, Tsuyoshi Maeda, Hideki Uchida, Tokiyoshi Umeda, Hideomi Yui
  • Publication number: 20130265774
    Abstract: A light diffusing member includes a base material having a light transmitting property; a plurality of light blocking sections that are formed in a scattered manner at one surface of the base material; and a light transmissive material layer that is formed at the one surface of the base material. A thickness of the light transmissive material layer is larger than a thickness of each light blocking section. The light transmissive material layer has hollow portions in regions where the light blocking sections are formed. Each hollow portion has a shape in which a cross-section area when each hollow portion is cut at a plane that is parallel to the one surface of the base material is large on a side of the corresponding light blocking section and becomes gradually smaller with increasing distance from the corresponding light blocking section. A portion of the light transmissive material layer other than where the hollow portions are formed is a light transmitting section.
    Type: Application
    Filed: December 8, 2011
    Publication date: October 10, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tokiyoshi Umeda, Hidefumi Yoshida, Emi Yamamoto, Toru Kanno, Tsuyoshi Maeda, Tsuyoshi Kamada
  • Patent number: 8535108
    Abstract: A formation method of an organic layer (13) includes a transfer process of forming the organic layer (13) by superposing a donor substrate (30) having a light heat converting layer (32) and a transfer layer (34) formed sequentially to cover at least regions corresponding to organic layer formation regions on a support plate (31) and a transfer mask (40) having openings corresponding to the organic layer formation regions, on each other so that the transfer layer-side surface of the donor substrate (30) comes into contact with the transfer mask (40), and, with the resultant structure placed above a transfer target substrate (20) so that the transfer mask (40) is on the lower side, transferring the transfer layer (34) onto the transfer target substrate (20) via the openings of the transfer mask (40).
    Type: Grant
    Filed: June 1, 2010
    Date of Patent: September 17, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tokiyoshi Umeda, Tohru Sonoda, Hideki Uchida
  • Publication number: 20120281289
    Abstract: A light-diffusion sheet (1) includes a light diffusing section (2) which is provided on a substrate (6) and has a plurality of recessed parts (5) each of which has a v-shaped cross section. A light blocking section (3) is provided in each of the plurality of recessed parts (5), and a reflecting section (4) made of mesoporous silica (8) is provided so as to close a gap between the light blocking section (3) and the each of the plurality of recessed parts (5). The mesoporous silica (8) causes the reflecting section (4) to have a low refractive index. This causes a difference in refractive index between the reflecting section (4) and the light diffusing section (2), so that entrance light having entered the light-diffusion sheet (1) can be totally reflected with great efficiency. Further, since it is unnecessary to use an expensive high refractive index material for the light diffusing section (2), the light-diffusion sheet (1) can be manufactured at a reduced manufacturing cost.
    Type: Application
    Filed: October 26, 2010
    Publication date: November 8, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Akinori Itoh, Tokiyoshi Umeda
  • Publication number: 20120268826
    Abstract: A light diffusion sheet (1) includes a lower base film (2), an upper base film (3), a light diffusing section (4), a plurality of light absorbing sections (5), and an adhesive layer (6). The light diffusing section (4), the plurality of light absorbing sections (5), and the adhesive layer (6) are provided between the lower base film (2) and the upper base film (3). Specifically, the light diffusing section (4) is provided on the lower base film (2). The light diffusing section (4) has formed a plurality of concave parts (8) therein. The upper base film (3) is provided on the light diffusing section (4). The plurality of light absorbing sections (5) fit in the plurality of respective concave parts (8) via respective gaps.
    Type: Application
    Filed: December 2, 2010
    Publication date: October 25, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tokiyoshi Umeda, Emi Yamamoto, Akinori Itoh
  • Publication number: 20120154719
    Abstract: In order to provide a light diffusion polarizing sheet which reduces generation of an image blur and is easily manufactured, a light diffusion polarizing sheet (1) according to the present invention includes a polarizer (2) and a light diffusion layer (3). The polarizer (2) includes a polarizing layer (4) and a first protective layer (6) to which the polarizing layer (4) is attached via an adhering layer (5). In the polarizer (2), the light diffusion layer (3) is provided on a surface of the polarizing layer (4), on which surface the first protective layer (6) is not provided. This reduces a distance from a liquid crystal cell (8) to the light diffusion layer (3), and therefore reduces the number of members and the number of process.
    Type: Application
    Filed: November 19, 2010
    Publication date: June 21, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Tokiyoshi Umeda
  • Publication number: 20120098420
    Abstract: An anode 2 is formed on an element substrate 1. By using a film-forming solution containing a stacking material that forms an organic layer 43, a film is formed on a donor substrate 10 to form a transfer layer 11, thereby fabricating a transfer substrate 12. The transfer substrate 12 and the element substrate 1 are placed so as to face each other with spacers 13 interposed therebetween, such that the surface of the transfer substrate 12, which has the transfer layer 11 formed thereon, faces the element substrate 1 having the anode 2 formed thereon. The transfer substrate 12 and the element substrate 1 facing each other are held under vacuum conditions. The transfer substrate 12 is heated by the heat source 15 under the vacuum conditions to transfer the transfer layer 11 to the element substrate 1.
    Type: Application
    Filed: June 3, 2010
    Publication date: April 26, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hideki Uchida, Tokiyoshi Umeda, Tohru Sonoda
  • Publication number: 20120091482
    Abstract: An anode 2 is formed on an element substrate 1. By using a film-forming solution containing a stacking material that forms an organic layer 43, a film is formed on a donor substrate 10 to pattern a transfer layer 11, thereby fabricating a transfer substrate 12. The transfer substrate 12 and the element substrate 1 are placed so as to face each other with spacers 13 interposed therebetween, such that the surface of the transfer substrate 12, which has the transfer layer 11 formed thereon, faces the element substrate 1 having the anode 2 formed thereon. The transfer substrate 12 and the element substrate 1 facing each other are held under vacuum conditions. The transfer substrate 12 is heated by a heat source 15 under the vacuum conditions to transfer the transfer layer 11 to the element substrate 1.
    Type: Application
    Filed: June 3, 2010
    Publication date: April 19, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Hideki Uchida, Tokiyoshi Umeda, Tohru Sonoda
  • Publication number: 20120086330
    Abstract: A formation method of an organic layer (13) includes a transfer process of forming the organic layer (13) by superposing a donor substrate (30) having a light heat converting layer (32) and a transfer layer (34) formed sequentially to cover at least regions corresponding to organic layer formation regions on a support plate (31) and a transfer mask (40) having openings corresponding to the organic layer formation regions, on each other so that the transfer layer-side surface of the donor substrate (30) comes into contact with the transfer mask (40), and, with the resultant structure placed above a transfer target substrate (20) so that the transfer mask (40) is on the lower side, transferring the transfer layer (34) onto the transfer target substrate (20) via the openings of the transfer mask (40).
    Type: Application
    Filed: June 1, 2010
    Publication date: April 12, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tokiyoshi Umeda, Tohru Sonoda, Hideki Uchida
  • Publication number: 20120025182
    Abstract: The present invention provides a donor substrate, a process for production of a transfer film, and a process for production of an organic electroluminescent element, that allow obtaining a transfer film having a uniform composition distribution by way of a simple configuration. A donor substrate of the present invention is a substrate comprising a photothermal conversion layer and a donor layer, wherein the donor layer has a first organic layer arranged on a side of a transfer surface, and a second organic layer arranged on a side of the photothermal conversion layer; the first organic layer and the second organic layer are formed of vaporizable organic materials having dissimilar vaporization-starting temperatures; and the organic material that forms the first organic layer has a vaporization-starting temperature higher than that of the organic material that forms the second organic layer.
    Type: Application
    Filed: December 8, 2009
    Publication date: February 2, 2012
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Tokiyoshi Umeda, Hideki Uchida