Patents by Inventor Kazuyoshi Sakuragi

Kazuyoshi Sakuragi 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: 20210257519
    Abstract: A semiconductor package substrate includes a semiconductor housing space including a mounting surface being provided on a bottom side and configured to mount a semiconductor light-emitting element, and a reflective wall being provided around the mounting surface and configured to reflect light emitted from the semiconductor light-emitting element to be mounted on the mounting surface; a mounting region being provided at a rim portion and configured to mount a lid member for covering the semiconductor light-emitting element; and a flow-suppressing portion separating the mounting region and the reflective wall spatially in such a manner that a joining member joining the lid member to the rim portion is suppressed from flowing from the mounting region into the semiconductor housing space.
    Type: Application
    Filed: February 17, 2021
    Publication date: August 19, 2021
    Applicant: NIKKISO CO., LTD.
    Inventors: Hiroyasu ICHINOKURA, Kazuyoshi SAKURAGI
  • Publication number: 20210249573
    Abstract: A semiconductor light-emitting device includes a semiconductor light-emitting element having a supporting substrate and a sealing member located above the supporting substrate, a mounting substrate on which the semiconductor light-emitting element is mounted in such a manner that the sealing member faces the mounting substrate, and a sealing part that integrally covers a part of the supporting substrate and a side surface of the sealing member and seals the semiconductor light-emitting element and the mounting substrate.
    Type: Application
    Filed: June 6, 2019
    Publication date: August 12, 2021
    Applicant: NIKKISO CO., LTD.
    Inventors: Hiroyasu ICHINOKURA, Tadaaki MAEDA, Kazuyoshi SAKURAGI
  • Patent number: 10337682
    Abstract: A lighting film (1) includes a first base material (2), a plurality of lighting portions (3), and a void portion (9), and if a virtual straight line (F) that passes through a point (C), at which any one light ray of light entering the lighting portion (3) is incident on a reflective surface, and is orthogonal to a first surface (2a) of the first base material (2) marks a boundary between two spaces, a space with the light ray incident on the point (C) of the two spaces is labeled as a first space (S1), and a space without the light ray incident on the point (C) is labeled as a second space (S2), the lighting film (1) has a function of decreasing intensity of light traveling toward the second space (S2) of light emitted from the first base material (2) or the lighting portion (3).
    Type: Grant
    Filed: December 22, 2017
    Date of Patent: July 2, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Tsujimoto, Tsuyoshi Kamada, Shun Ueki, Tomoko Nango, Kazuyoshi Sakuragi
  • Patent number: 10067379
    Abstract: A liquid crystal display device includes a liquid crystal panel that includes a liquid crystal cell including a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, and a pair of polarizers arranged on a light incident side and a light emission side of the liquid crystal layer; an illumination device that is arranged on the light incident side of the liquid crystal cell, and emits light toward the liquid crystal cell; and a light control member that is arranged on the light emission side of the liquid crystal panel, and controls an emission direction of light emitted from the liquid crystal panel by anisotropically diffusing the light in an azimuthal direction as viewed from a direction normal to the liquid crystal panel.
    Type: Grant
    Filed: April 2, 2013
    Date of Patent: September 4, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuyoshi Sakuragi, Tsuyoshi Kamada, Toru Kanno, Shun Ueki, Tsuyoshi Maeda, Emi Yamamoto
  • Patent number: 10036842
    Abstract: An illumination device can prevent light from leaking at a bend portion of a light guiding lens. The illumination device can include an LED and the light guiding lens for guiding light from the LED. The light guiding lens can include a light guiding portion extending in a predetermined extension direction and having a first end face and a second end face so as to guide the light entered through the first end face in the extension direction, and a bend portion continued from the second end face of the light guiding portion and bent in an arc shape. An incident face is disposed in the first end face to receive the light from the LED and to be incident on an inner surface of the bend portion on an outer side of the arc shape at an angle of incidence equal to or more than a critical angle.
    Type: Grant
    Filed: January 25, 2016
    Date of Patent: July 31, 2018
    Assignee: STANLEY ELECTRIC CO., LTD.
    Inventor: Kazuyoshi Sakuragi
  • Publication number: 20180119912
    Abstract: A lighting film (1) includes a first base material (2), a plurality of lighting portions (3), and a void portion (9), and if a virtual straight line (F) that passes through a point (C), at which any one light ray of light entering the lighting portion (3) is incident on a reflective surface, and is orthogonal to a first surface (2a) of the first base material (2) marks a boundary between two spaces, a space with the light ray incident on the point (C) of the two spaces is labeled as a first space (S1), and a space without the light ray incident on the point (C) is labeled as a second space (S2), the lighting film (1) has a function of decreasing intensity of light traveling toward the second space (S2) of light emitted from the first base material (2) or the lighting portion (3).
    Type: Application
    Filed: December 22, 2017
    Publication date: May 3, 2018
    Inventors: MASAHIRO TSUJIMOTO, TSUYOSHI KAMADA, SHUN UEKI, TOMOKO NANGO, KAZUYOSHI SAKURAGI
  • Patent number: 9885453
    Abstract: A lighting film (1) includes a first base material (2), a plurality of lighting portions (3), and a void portion (9), and if a virtual straight line (F) that passes through a point (C), at which any one light ray of light entering the lighting portion (3) is incident on a reflective surface, and is orthogonal to a first surface (2a) of the first base material (2) marks a boundary between two spaces, a space with the light ray incident on the point (C) of the two spaces is labeled as a first space (S1), and a space without the light ray incident on the point (C) is labeled as a second space (S2), the lighting film (1) has a function of decreasing intensity of light traveling toward the second space (S2) of light emitted from the first base material (2) or the lighting portion (3).
    Type: Grant
    Filed: October 16, 2014
    Date of Patent: February 6, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masahiro Tsujimoto, Tsuyoshi Kamada, Shun Ueki, Tomoko Nango, Kazuyoshi Sakuragi
  • Patent number: 9863593
    Abstract: A daylighting film (1) according to one aspect of the present invention includes a base member (10) having optical transparency, first projections (11) having optical transparency and formed on an inner surface (10a) of the base member (10), a second projection (12) formed on the inner surface (10a) and having a height from the inner surface (10a) higher than a height of the first projections (11), a protective base member (13) arranged in an opposite relation to the inner surface (10a) of the base member (10), a bonding layer (14) for bonding the second projection (12) and the protective base member (13), and gaps (15) defined between the first projections (11) and between the first projection (11) and the second projection (12), wherein the first projections (11) include reflective surfaces (11c2) at which light incoming from an outer surface (13b) side of the protective base member (13) or the base member (10) is totally reflected.
    Type: Grant
    Filed: November 10, 2014
    Date of Patent: January 9, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kazuyoshi Sakuragi, Tsuyoshi Kamada, Shun Ueki, Tomoko Nango, Masahiro Tsujimoto, Yuhsuke Tsuda
  • Patent number: 9810389
    Abstract: A daylighting device of the present invention is provided with a planar optical member 1 and a support member. The planar optical member 1 is provided with a planar structure body which has a plurality of linear bodies 3 formed of optically transparent materials which are arrayed substantially in parallel and a plurality of binding members which are arranged in a direction which intersects with the plurality of the linear bodies 3 and which bind the plurality of the linear bodies 3 in a state of being arrayed substantially in parallel. The linear bodies 3 have reflective surfaces which reflect light which is incident to the linear body 3 along a direction which intersects with a length direction of the linear body 3 and refractive surfaces which refract the light.
    Type: Grant
    Filed: September 25, 2014
    Date of Patent: November 7, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomoko Nango, Tsuyoshi Kamada, Shun Ueki, Takashi Katayama, Kazuyoshi Sakuragi, Masahiro Tsujimoto, Daisuke Shinozaki
  • Patent number: 9803818
    Abstract: A lighting film which includes a base member having optical transparency, a plurality of protrusions having optical transparency, which are formed to be adjacent to each other on one surface of the base member, and a gap portion formed between the protrusions, in which an area of an end surface of the protrusion on a base member side is greater than an area of an end surface of the protrusion on a side opposite to the base member, and a ratio s/w of an interval s of two adjacent protrusions among the plurality of protrusions to a width w of the protrusion is equal to or less than 0.1.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: October 31, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tomoko Nango, Shun Ueki, Tsuyoshi Kamada, Kazuyoshi Sakuragi, Masahiro Tsujimoto
  • Patent number: 9709841
    Abstract: Provided is a liquid crystal display device in which grayscale inversion when viewing a liquid crystal panel in an oblique direction is suppressed, thereby being excellent in viewing angle characteristics. The liquid crystal display device includes a liquid crystal panel that includes a pair of substrates, a liquid crystal layer disposed between the pair of substrates, and a pair of polarization plates respectively arranged in the liquid crystal layer on a light incident side and a light emission side, an illumination device that is arranged on the light incident side of the liquid crystal panel and emits light toward the liquid crystal panel, and a light diffusion member that is arranged on the light emission side of the liquid crystal panel and causes light emitted from the liquid crystal panel to be diffused in an azimuthal direction viewed from a normal direction of the liquid crystal panel.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: July 18, 2017
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shohei Katsuta, Tsuyoshi Kamada, Hideomi Yui, Tsuyoshi Maeda, Kazuyoshi Sakuragi
  • Publication number: 20160273724
    Abstract: A daylighting film (1) according to one aspect of the present invention includes a base member (10) having optical transparency, first projections (11) having optical transparency and formed on an inner surface (10a) of the base member (10), a second projection (12) formed on the inner surface (10a) and having a height from the inner surface (10a) higher than a height of the first projections (11), a protective base member (13) arranged in an opposite relation to the inner surface (10a) of the base member (10), a bonding layer (14) for bonding the second projection (12) and the protective base member (13), and gaps (15) defined between the first projections (11) and between the first projection (11) and the second projection (12), wherein the first projections (11) include reflective surfaces (11c2) at which light incoming from an outer surface (13b) side of the protective base member (13) or the base member (10) is totally reflected.
    Type: Application
    Filed: November 10, 2014
    Publication date: September 22, 2016
    Inventors: Kazuyoshi SAKURAGI, Tsuyoshi KAMADA, Shun UEKI, Tomoko NANGO, Masahiro TSUJIMOTO, Yuhsuke TSUDA
  • Publication number: 20160252225
    Abstract: A lighting film (1) includes a first base material (2), a plurality of lighting portions (3), and a void portion (9), and if a virtual straight line (F) that passes through a point (C), at which any one light ray of light entering the lighting portion (3) is incident on a reflective surface, and is orthogonal to a first surface (2a) of the first base material (2) marks a boundary between two spaces, a space with the light ray incident on the point (C) of the two spaces is labeled as a first space (S1), and a space without the light ray incident on the point (C) is labeled as a second space (S2), the lighting film (1) has a function of decreasing intensity of light traveling toward the second space (S2) of light emitted from the first base material (2) or the lighting portion (3).
    Type: Application
    Filed: October 16, 2014
    Publication date: September 1, 2016
    Inventors: Masahiro TSUJIMOTO, Tsuyoshi KAMADA, Shun UEKI, Tomoko NANGO, Kazuyoshi SAKURAGI
  • Patent number: 9429288
    Abstract: A lighting film 1 includes a base member 10 which has light-transmitting properties, a plurality of protrusion portions 11 which have light-transmitting properties and are formed on one surface of the base member 10 so as to be adjacent to each other, and a gap portion 12 which is formed between the protrusion portions. In the protrusion portion 11, a first end surface 11a on the base member 10 side or a second end surface 11b on an opposite side to the base member 10 is configured as a light incidence end surface, and a side surface 11c which comes into contact with the gap portion 12 is configured as a reflective surface of totally reflecting light which is incident from the light incidence end surface. The base member 10 or a member that is formed on one surface of the base member 10 and has light-transmitting properties is exposed in the gap portion 12.
    Type: Grant
    Filed: September 30, 2013
    Date of Patent: August 30, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shun Ueki, Tomoko Nangou, Tsuyoshi Kamada, Kazuyoshi Sakuragi, Masahiro Tsujimoto
  • Publication number: 20160223155
    Abstract: A daylighting device of the present invention is provided with a planar optical member 1 and a support member. The planar optical member 1 is provided with a planar structure body which has a plurality of linear bodies 3 formed of optically transparent materials which are arrayed substantially in parallel and a plurality of binding members which are arranged in a direction which intersects with the plurality of the linear bodies 3 and which bind the plurality of the linear bodies 3 in a state of being arrayed substantially in parallel. The linear bodies 3 have reflective surfaces which reflect light which is incident to the linear body 3 along a direction which intersects with a length direction of the linear body 3 and refractive surfaces which refract the light.
    Type: Application
    Filed: September 25, 2014
    Publication date: August 4, 2016
    Inventors: Tomoko NANGO, Tsuyoshi KAMADA, Shun UEKI, Takashi KATAYAMA, Kazuyoshi SAKURAGI, Masahiro TSUJIMOTO, Daisuke SHINOZAKI
  • Publication number: 20160223154
    Abstract: A lighting film which includes a base member having optical transparency, a plurality of protrusions having optical transparency, which are formed to be adjacent to each other on one surface of the base member, and a gap portion formed between the protrusions, in which an area of an end surface of the protrusion on a base member side is greater than an area of an end surface of the protrusion on a side opposite to the base member, and a ratio s/w of an interval s of two adjacent protrusions among the plurality of protrusions to a width w of the protrusion is equal to or less than 0.1.
    Type: Application
    Filed: June 5, 2014
    Publication date: August 4, 2016
    Inventors: Tomoko NANGO, Shun UEKI, Tsuyoshi KAMADA, Kazuyoshi SAKURAGI, Masahiro TSUJIMOTO
  • Publication number: 20160216431
    Abstract: An illumination device can prevent light from leaking at a bend portion of a light guiding lens. The illumination device can include an LED and the light guiding lens for guiding light from the LED. The light guiding lens can include a light guiding portion extending in a predetermined extension direction and having a first end face and a second end face so as to guide the light entered through the first end face in the extension direction, and a bend portion continued from the second end face of the light guiding portion and bent in an arc shape. An incident face is disposed in the first end face to receive the light from the LED and to be incident on an inner surface of the bend portion on an outer side of the arc shape at an angle of incidence equal to or more than a critical angle.
    Type: Application
    Filed: January 25, 2016
    Publication date: July 28, 2016
    Inventor: Kazuyoshi SAKURAGI
  • Publication number: 20150226394
    Abstract: A lighting film 1 includes a base member 10 which has light-transmitting properties, a plurality of protrusion portions 11 which have light-transmitting properties and are formed on one surface of the base member 10 so as to be adjacent to each other, and a gap portion 12 which is formed between the protrusion portions. In the protrusion portion 11, a first end surface 11a on the base member 10 side or a second end surface 11b on an opposite side to the base member 10 is configured as a light incidence end surface, and a side surface 11c which comes into contact with the gap portion 12 is configured as a reflective surface of totally reflecting light which is incident from the light incidence end surface. The base member 10 or a member that is formed on one surface of the base member 10 and has light-transmitting properties is exposed in the gap portion 12.
    Type: Application
    Filed: September 30, 2013
    Publication date: August 13, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Shun Ueki, Tomoko Nangou, Tsuyoshi Kamada, Kazuyoshi Sakuragi, Masahiro Tsujimoto
  • Publication number: 20150160507
    Abstract: Provided is a liquid crystal display device in which grayscale inversion when viewing a liquid crystal panel in an oblique direction is suppressed, thereby being excellent in viewing angle characteristics. The liquid crystal display device includes a liquid crystal panel that includes a pair of substrates, a liquid crystal layer disposed between the pair of substrates, and a pair of polarization plates respectively arranged in the liquid crystal layer on a light incident side and a light emission side, an illumination device that is arranged on the light incident side of the liquid crystal panel and emits light toward the liquid crystal panel, and a light diffusion member that is arranged on the light emission side of the liquid crystal panel and causes light emitted from the liquid crystal panel to be diffused in an azimuthal direction viewed from a normal direction of the liquid crystal panel.
    Type: Application
    Filed: August 5, 2013
    Publication date: June 11, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Shohei Katsuta, Tsuyoshi Kamada, Hideomi Yui, Tsuyoshi Maeda, Kazuyoshi Sakuragi
  • Patent number: 9019451
    Abstract: A liquid crystal display (LCD) device includes a birefringent layer that satisfies the relationship nx>ny?nz and may be considered a first-class birefringent layer, a birefringent layer that satisfies the relationship nx<ny?nz may be considered a second-class birefringent layer, and a birefringent layer that satisfies the relationship nx?ny?nz may be considered a third-class birefringent layer. The LCD may include a first polarizer, a first first-class birefringent layer whose in-plane phase difference is adjusted to a quarter wave, an LC cell, a second first-class birefringent layer whose Nz factor is substantially the same as the first first-class birefringent layer and whose in-plane phase difference is adjusted to a quarter wave, a second-class birefringent layer, and a second polarizer which may be stacked in this order.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: April 28, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Sakai, Kazuyoshi Sakuragi, Masahiro Hasegawa