Patents by Inventor AKIRA HASHIYA

AKIRA HASHIYA 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: 20160049562
    Abstract: An illuminator includes a light-emitting element and a light extraction sheet which transmits light occurring from the light-emitting element. The light-emitting element includes a first electrode having a light transmitting property, a second electrode, and an emission layer between the first and second electrodes. The light extraction sheet includes a light-transmitting substrate having a first principal face and a second principal face, a first light extraction structure on the first principal face side of the light-transmitting substrate, and a second light extraction structure on the second principal face side of the light-transmitting substrate. The first light extraction structure includes a low-refractive index layer and a high-refractive index layer. The second light extraction structure is arranged so that light which is transmitted through the light-transmitting substrate and arrives at an incident angle of 40 degrees to 60 degrees has an average transmittance of 42% or more.
    Type: Application
    Filed: January 17, 2014
    Publication date: February 18, 2016
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yasuhisa INADA, Kazuyuki YAMAE, Akira HASHIYA
  • Publication number: 20160020431
    Abstract: The present disclosure relates to an organic electroluminescence element including: a substrate having a light transmissive property; a light diffusion layer; a light transmissive electrode; a light reflective electrode; and a light emitting layer. With regard to the first light emitting layer being the first closest light emitting layer to the light reflective electrode, the relation defined by following expression (2) is satisfied, ? [ FORMULA ? ? 1 ] ? ? ( ? m ) × ? m 4 ? ? + l + 0.1 2 ? ? m ? n m ? ( ? m ) × d m ? ? ? ( ? m ) × ? m 4 ? ? + l + 0.5 2 ? ? m ( 2 ) wherein, ?m represents the weighted average emission wavelength, Ø(?m) represents the phase shift, nm(?m) represents the average refractive index of a medium filling a space between the light reflective electrode and the first light emitting layer, and dm represents the distance from the light reflective electrode to the first light emitting layer.
    Type: Application
    Filed: February 27, 2014
    Publication date: January 21, 2016
    Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Kazuyuki YAMAE, Yasuhisa INADA, Akira HASHIYA
  • Patent number: 9203054
    Abstract: An optical sheet includes a light scattering layer that scatters at least a part of light incident thereon by diffraction and that includes first and second areas. Each first area is a projection. Each second area is a recess. Each of at least the projections or the recesses has a tapered shape. When a center wavelength of the light incident on the light scattering layer is ? and a refractive index of a layer that is in contact with the light scattering layer at a light emission side is n, spatial frequency components of a pattern formed by the first and second areas have a maximum peak at a spatial frequency in a range of 0.068/(?×n) or more and 2.8/(?×n) or less.
    Type: Grant
    Filed: December 4, 2014
    Date of Patent: December 1, 2015
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Taku Hirasawa, Yasuhisa Inada, Akira Hashiya, Yoshitaka Nakamura
  • Publication number: 20150249186
    Abstract: A light-emitting device includes a photoluminescent layer that emits light containing first light, and a light-transmissive layer located on or near the photoluminescent layer. A submicron structure is defined on at least one of the photoluminescent layer and the light-transmissive layer. The submicron structure includes at least projections or recesses. The submicron structure has spatial frequency components distributed at least from more than 0 to 2/Dint(min) as determined by two-dimensional Fourier transform of a pattern of the projections or recesses and satisfies the following relationship: 0.8Dint(min)<?a/nwav-a where Dint(min) is the minimum center-to-center distance between adjacent projections or recesses, ?a is the wavelength of the first light in air, and nwav-a is the refractive index of the photoluminescent layer for the first light.
    Type: Application
    Filed: February 10, 2015
    Publication date: September 3, 2015
    Inventors: YASUHISA INADA, TAKU HIRASAWA, YOSHITAKA NAKAMURA, AKIRA HASHIYA, MITSURU NITTA, TAKEYUKI YAMAKI
  • Publication number: 20150249183
    Abstract: A light-emitting device includes a photoluminescent layer that emits light containing first light, a light-transmissive layer located on or near the photoluminescent layer, and one or more reflectors. A submicron structure is defined on at least one of the photoluminescent layer and the light-transmissive layer. The one or more reflector are located outside the submicron structure. The submicron structure includes at least projections or recesses and satisfies the following relationship: ?a/nwav-a<Dint<?a where Dint is a center-to-center distance between adjacent projections or recesses, ?a is the wavelength of the first light in air, and nwav-a is the refractive index of the photoluminescent layer for the first light.
    Type: Application
    Filed: February 10, 2015
    Publication date: September 3, 2015
    Inventors: TAKU HIRASAWA, YASUHISA INADA, YOSHITAKA NAKAMURA, AKIRA HASHIYA, MITSURU NITTA, TAKEYUKI YAMAKI
  • Publication number: 20150249187
    Abstract: A light-emitting device includes a photoluminescent layer that emits light containing first light, a light-transmissive layer located on or near the photoluminescent layer, a low-refractive-index layer and a high-refractive-index layer. A submicron structure is defined on the photoluminescent layer and/or the light-transmissive layer. The low-refractive-index layer is located on or near the photoluminescent layer so that the photoluminescent layer is located between the low-refractive-index layer and light-transmissive layer. The high-refractive-index layer is located on or near the low-refractive-index layer so that the low-refractive-index layer is located between the high-refractive-index layer and the photoluminescent layer.
    Type: Application
    Filed: February 13, 2015
    Publication date: September 3, 2015
    Inventors: YASUHISA INADA, TAKU HIRASAWA, YOSHITAKA NAKAMURA, AKIRA HASHIYA, MITSURU NITTA, TAKEYUKI YAMAKI
  • Publication number: 20150171373
    Abstract: An optical sheet includes a light scattering layer that scatters at least a part of light incident thereon by diffraction and that includes first and second areas. Each first area is a projection. Each second area is a recess. Each of at least the projections or the recesses has a tapered shape. When a center wavelength of the light incident on the light scattering layer is ? and a refractive index of a layer that is in contact with the light scattering layer at a light emission side is n, spatial frequency components of a pattern formed by the first and second areas have a maximum peak at a spatial frequency in a range of 0.068/(?×n) or more and 2.8/(?×n) or less.
    Type: Application
    Filed: December 4, 2014
    Publication date: June 18, 2015
    Inventors: TAKU HIRASAWA, YASUHISA INADA, AKIRA HASHIYA, YOSHITAKA NAKAMURA