Patents by Inventor Seiji Nishiyama

Seiji Nishiyama 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: 20110291086
    Abstract: A hole injection layer and a light-emitting layer are laminated between a first electrode and a second electrode of a light emitter. A bank defines an area in which the light-emitting layer is to be formed. In the area defined by the bank, a hole injection layer has a recess in an upper surface thereof. An upper peripheral edge of the recess is covered with a part of the bank.
    Type: Application
    Filed: August 9, 2011
    Publication date: December 1, 2011
    Applicant: PANASONIC CORPORATION
    Inventor: Seiji NISHIYAMA
  • Publication number: 20110291085
    Abstract: A method for manufacturing a light-emitting element. An anode is formed on a main surface of a substrate. A hole-injection layer is formed at least above the anode. At least the hole-injection layer is covered with a protective film. A bank which is provided with an aperture through which a portion of the protective film is exposed, is formed on the protective film by a wet process. The portion of the protective film exposed through the aperture is removed so that a portion of the hole-injection layer is exposed, a light-emitting layer is formed on the hole-injection layer exposed through the aperture, and a cathode is formed above the light-emitting layer. The protective film is resistant to a fluid used during the wet process.
    Type: Application
    Filed: August 9, 2011
    Publication date: December 1, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Tetsuro KONDOH, Kou SUGANO, Seiji NISHIYAMA
  • Publication number: 20110193107
    Abstract: A light-emitter includes a first electrode and a layered body over the first electrode. The layered body includes a charge injection layer and a light-emitting layer. A bank defines a position of the light-emitting layer of the layered body, and a second electrode is over the layered body. The charge injection layer is formed by oxidation of an upper portion of a metal. The first electrode includes a metal layer that is a lower portion of the metal. An inner portion of the charge injection layer is depressed to define a recess. A portion of the bank is on an outer portion of the charge injection layer.
    Type: Application
    Filed: April 18, 2011
    Publication date: August 11, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Takayuki TAKEUCHI, Seiji NISHIYAMA
  • Publication number: 20110165517
    Abstract: An organic EL element includes a substrate and a light refractive layer, a first transparent electrode layer, an insulation layer, a hole transport layer, and a photosensitive resin layer stacked above the substrate. A luminous function layer is above the hole transport layer in a recess defined by the photosensitive resin layer. A second transparent electrode layer is above the luminous function layer. The light reflective layer, the first transparent electrode layer, the insulation layer, and the hole transport layer are formed above the substrate in a region isolated by the photosensitive resin layer. The photosensitive resin layer comprises a material that absorbs incident light of a predetermined wavelength. The first transparent electrode layer, the insulation layer, the hole transport layer, and the photosensitive resin layer each have a reflectance value that is between a local minimum value and a neighborhood value of the local minimum value.
    Type: Application
    Filed: March 21, 2011
    Publication date: July 7, 2011
    Applicant: PANASONIC CORPORATION
    Inventors: Seiji NISHIYAMA, Takashi OHTA
  • Patent number: 7952279
    Abstract: A fluorescence particle 17 according to the present invention is used for a light emitting display device and is made of a fluorescent material. The fluorescent material has at least one element 18 selected from the group consisting of Al, Mg, Ca, Ba, Sr and Y. Within a range 17a from the surface 17s of the fluorescence particle through a depth of 20 nm, the at least one element 18 has a local maximum of its concentration profile in the depth direction.
    Type: Grant
    Filed: February 29, 2008
    Date of Patent: May 31, 2011
    Assignee: Panasonic Corporation
    Inventors: Yosuke Honda, Iwao Ueno, Seiji Nishiyama
  • Publication number: 20100026164
    Abstract: A fluorescence particle 17 according to the present invention is used for a light emitting display device and is made of a fluorescent material. The fluorescent material has at least one element 18 selected from the group consisting of Al, Mg, Ca, Ba, Sr and Y. Within a range 17a from the surface 17s of the fluorescence particle through a depth of 20 nm, the at least one element 18 has a local maximum of its concentration profile in the depth direction.
    Type: Application
    Filed: February 29, 2008
    Publication date: February 4, 2010
    Inventors: Yosuke Honda, Iwao Ueno, Seiji Nishiyama
  • Patent number: 7633221
    Abstract: An organic electroluminescent element has a substrate, a first electrode formed above the substrate, an emissive layer, and a second electrode formed above the emissive layer. In the first electrode, at least a surface opposite to the other surface facing the substrate has a multidimensionally meandering surface shape. The emissive layer includes an organic electroluminescent material and is formed along the multidimensionally-meandering-shaped surface of the first electrode. In the emissive layer, a surface facing the first electrode and the other surface opposite to the first-electrode-facing surface each have a multidimensionally meandering surface shape. The organic electroluminescent element of the present invention is used in an electroluminescent (EL) type display device as a pixel that is controlled individually for light emission. Also, the organic electroluminescent element of the present invention is used as a light source of an electroluminescent (EL) type lighting system.
    Type: Grant
    Filed: August 5, 2003
    Date of Patent: December 15, 2009
    Assignee: Panasonic Corporation
    Inventors: Naohide Wakita, Seiji Nishiyama
  • Publication number: 20080021643
    Abstract: A driving support apparatus in a vehicle includes a control circuit as well as a current position detection unit, a database, and other units. The driving support apparatus provides a guidance of an exit method from a one way road when the vehicle is detected to have entered the one way road in the wrong direction. The exit method from the one way road is searched for based on a road map in a map data input unit, and the exit method is provided for a driver of the vehicle from a display unit and/or a speaker.
    Type: Application
    Filed: June 29, 2007
    Publication date: January 24, 2008
    Applicant: DENSO CORPORATION
    Inventor: Seiji Nishiyama
  • Publication number: 20070189667
    Abstract: A display element is provided with a light source and a waveguide that propagates a light emitted from the light source, wherein the light propagated in the waveguide is extracted to outside from a waveguide lateral face, and wherein the light is extracted out of the waveguide from the waveguide lateral face by changing a shape of the waveguide lateral face.
    Type: Application
    Filed: April 9, 2007
    Publication date: August 16, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Naohide Wakita, Seiji Nishiyama
  • Patent number: 7236663
    Abstract: A display element is provided with a light source and a waveguide that propagates a light emitted from the light source, wherein the light propagated in the waveguide is extracted to outside from a waveguide lateral face, and wherein the light is extracted out of the waveguide from the waveguide lateral face by changing a shape of the waveguide lateral face.
    Type: Grant
    Filed: November 4, 2003
    Date of Patent: June 26, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Naohide Wakita, Seiji Nishiyama
  • Patent number: 7215393
    Abstract: A reflective plate comprises a substrate, a plurality of protrusions each formed on the substrate and having a curved surface, and a reflective film formed on the substrate having the protrusions, wherein a planar shape of each of the protrusions is indefinite, and when a frame line of the planar shape of each of the protrusions is divided into fine line segments, the line segments are pointed in all directions or in predetermined directions. This improves reflective properties such as dispersion properties.
    Type: Grant
    Filed: July 30, 2001
    Date of Patent: May 8, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Mariko Kawaguri, Seiji Nishiyama, Naohide Wakita, Taketoshi Nakao, Yasuhiko Yamanaka, Toshiyasu Oue, Hirofumi Kubota
  • Publication number: 20070069235
    Abstract: A light-emitting element (1) includes a light-emitting layer (2) including a phosphor, and at least two electrodes (6, 7). The light-emitting element (1) includes at least two kinds of electrically insulating layers (2, 9) with different dielectric constants. One of the electrically insulating layers (2, 9) is the light-emitting layer (2), and one of the two electrodes (6, 7) is formed in contact with one of the insulating layers. Therefore, it is possible to provide a light-emitting element that can emit light by using surface discharge, is manufactured at low cost, exhibits favorable luminous efficiency, and is to be driven with low power consumption when being applied to a large-screen display.
    Type: Application
    Filed: October 21, 2004
    Publication date: March 29, 2007
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Iwao Ueno, Junichi Kato, Seiji Nishiyama, Naoki Noda
  • Publication number: 20060214563
    Abstract: An organic electroluminescent element has a substrate, a first electrode formed above the substrate, an emissive layer, and a second electrode formed above the emissive layer. In the first electrode, at least a surface opposite to the other surface facing the substrate has a multidimensionally meandering surface shape. The emissive layer includes an organic electroluminescent material and is formed along the multidimensionally-meandering-shaped surface of the first electrode. In the emissive layer, a surface facing the first electrode and the other surface opposite to the first-electrode-facing surface each have a multidimensionally meandering surface shape. The organic electroluminescent element of the present invention is used in an electroluminescent (EL) type display device as a pixel that is controlled individually for light emission. Also, the organic electroluminescent element of the present invention is used as a light source of an electroluminescent (EL) type lighting system.
    Type: Application
    Filed: August 5, 2003
    Publication date: September 28, 2006
    Inventors: Naohide Wakita, Seiji Nishiyama
  • Publication number: 20060152472
    Abstract: A display device (1) according to this invention includes a pair of opposite substrates (3A) and (3B), a group of electrostatically chargeable colored particles (6) present between the pair of substrates, a transparent first electrode (4), and a second electrode (5), wherein the group of colored particles is capable of traveling in a manner to or not to shut off light incident on or passing through the first electrode in accordance with voltage applied across the first and second electrodes for displaying an image.
    Type: Application
    Filed: November 17, 2003
    Publication date: July 13, 2006
    Applicant: MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD.
    Inventors: Seiji Nishiyama, Naohide Wakita
  • Publication number: 20060034566
    Abstract: A display element is provided with a light source and a waveguide that propagates a light emitted from the light source, wherein the light propagated in the waveguide is extracted to outside from a waveguide lateral face, and wherein the light is extracted out of the waveguide from the waveguide lateral face by changing a shape of the waveguide lateral face.
    Type: Application
    Filed: November 4, 2003
    Publication date: February 16, 2006
    Applicant: Matsushita Electric Industrial Co., Ltd.
    Inventors: Naohide Wakita, Seiji Nishiyama
  • Patent number: 6888678
    Abstract: In a method for manufacturing a reflector having a plurality of convex portions 4 that are obtained by means of melt deformation of column-shaped bodys 15 formed of a photosensitive resin material, the photosensitive resin material has aspect ratio vs. average tilt angle characteristics in which an average tilt angle ? reaches a maximum value through an incremental change process and then converges to a certain value through a decremental process when an aspect ratio is gradually increased from a value close to zero, provided that the average tilt angle of the convex portion is an angle of elevation from the outer periphery of the bottom surface of the convex portion 4 to an apex of the convex portion and that the aspect ratio is a ratio of the height of said column-shaped body 15 with respect to the width thereof.
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: May 3, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Seiji Nishiyama, Naohide Wakita, Hirofumi Kubota
  • Patent number: 6781759
    Abstract: In a reflector comprising a reflecting film formed on a surface having depressions and protrusions, wherein each of the depressions and protrusions has a vertex and is composed of a curved surface formed so as to be convex up or convex down and a surrounding portion including a valley or a ridge surrounding the curved surface with an inflection point of the curved surface serving as a boundary between the curved surface and the surrounding portion; and wherein when the curved surface is convex up, the inflection point is on the valley side of the midpoint between the vertex and the valley, whereas when the curved surface is convex down, the inflection point is on the ridge side of the midpoint between the vertex and the ridge.
    Type: Grant
    Filed: April 18, 2002
    Date of Patent: August 24, 2004
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Naohide Wakita, Seiji Nishiyama, Mariko Kawaguri
  • Publication number: 20040021810
    Abstract: A reflective plate comprises a substrate, a plurality of protrusions each formed on the substrate and having a curved surface, and a reflective film formed on the substrate having the protrusions, wherein a planar shape of each of the protrusions is indefinite, and when a frame line of the planar shape of each of the protrusions is divided into fine line segments, the line segments are pointed in all directions or in predetermined directions. This improves reflective properties such as dispersion properties.
    Type: Application
    Filed: February 25, 2003
    Publication date: February 5, 2004
    Inventors: Mariko Kawaguri, Seiji Nishiyama, Naohide Wakita, Taketoshi Nakao, Yasuhiko Yamanaka, Toshiyasu Oue, Hirofumi Kubota
  • Patent number: 6630969
    Abstract: The purpose is to provide a polymer dispersion type liquid crystal display panel wherein both a high contrast and a low driving voltage are obtained and scattering performance is superior. The polymer dispersion type liquid crystal display panel comprises a pair of substrates 10, 11, a polymer dispersion type liquid crystal layer 12 comprising a liquid crystal 18 and a liquid crystalline polymer 17, a driving electrode 7 and an opposite electrode 8. The driving electrode 7 and the opposite electrode 8 are formed on the lower substrate 11, and an electric field is applied approximately in parallel with the above-mentioned lower substrate 11. Under no application of voltage, the above-mentioned liquid crystal 18 and the polymer 17 adjacent to the liquid crystal, which composes an interface, are aligned in approximately the same direction on a plane parallel with the substrates according to an alignment treatment of the substrates, and thereby a transparent state is obtained.
    Type: Grant
    Filed: February 11, 2002
    Date of Patent: October 7, 2003
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hirofumi Kubota, Tsuyoshi Uemura, Kenji Nakao, Seiji Nishiyama
  • Publication number: 20030142247
    Abstract: In a method for manufacturing a reflector having a plurality of convex portions 4 that are obtained by means of melt deformation of column-shaped bodys 15 formed of a photosensitive resin material, the photosensitive resin material has aspect ratio vs. average tilt angle characteristics in which an average tilt angle &thgr; reaches a maximum value through an incremental change process and then converges to a certain value through a decremental process when an aspect ratio is gradually increased from a value close to zero, provided that the average tilt angle of the convex portion is an angle of elevation from the outer periphery of the bottom surface of the convex portion 4 to an apex of the convex portion and that the aspect ratio is a ratio of the height of said column-shaped body 15 with respect to the width thereof.
    Type: Application
    Filed: December 13, 2002
    Publication date: July 31, 2003
    Inventors: Seiji Nishiyama, Naohide Wakita, Hirofumi Kubota