Patents by Inventor Hideo Nagai

Hideo Nagai 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: 20070102693
    Abstract: In an LED array chip (2), LEDs (6) are connected together in series by a b? dging wire (30) The LEDs (6) each have a semiconductor multilayer structure (8-18) including a light emitting layer (14) Here, the semiconductor multilayer structure (8-18) is epitaxially grown on a front surface of an SiC substrate (4) A phosphor film (48) covers the LEDs (6) Two power supply terminals (36 and 38), which are electrically independent from each other, are formed on a back surface of the SiC substrate (4) The power supply terminal (36) is connected to a cathode electrode (32) of an LED (6a) at a lower potential end by a b? dging wire (40) and a plated-through hole (42) The power supply terminal (38) is connected to an anode electrode (34) of an LED (6d) at a higher potential end by a bridging wire (44) and a plated-through hole (46)
    Type: Application
    Filed: December 17, 2004
    Publication date: May 10, 2007
    Inventor: Hideo Nagai
  • Publication number: 20070097684
    Abstract: A lighting apparatus of the present invention comprises: a substrate; a semiconductor light emitting device mounted on the substrate; a resin layer formed on a mounting surface of the substrate and having a lens portion that seals the semiconductor light emitting device; and a reflecting plate. Here, the reflecting plate and the resin layer are positioned with a space therebetween. Herewith, it is possible to offer a lighting apparatus which (i) has high luminance, (ii) causes sufficient heat release, and (iii) is less likely to cause detachment of the resin layer.
    Type: Application
    Filed: September 21, 2004
    Publication date: May 3, 2007
    Inventors: Kunihiko Obara, Koji Nakatsu, Hiromi Kitahara, Toshihide Maeda, Hideo Nagai
  • Publication number: 20070023769
    Abstract: An LED lighting source preventing heat deterioration and improving luminous efficiency includes a mounting substrate having a wiring pattern on a first main surface thereof and a plurality of LED bare chips, each composed of a first semiconductor layer and a second semiconductor layer having respectively different conductivity, an active layer disposed therebetween, and a metal electrode on the first semiconductor layer and substantially equal in area thereto, and each LED bare chip being joined to the wiring pattern according to flip chip mounting of the metal electrode to form a junction between the wiring pattern and the metal electrode. Each junction is formed so that an area thereof is at least 20% of the area of the metal electrode. Thermal resistance from the active layers through to a second main surface of the mounting substrate, which is a back surface thereof, is set to 3.0 9C./W or lower.
    Type: Application
    Filed: September 7, 2004
    Publication date: February 1, 2007
    Inventors: Keiji Nishimoto, Noriyasu Tanimoto, Masanori Shimizu, Hideo Nagai, Takeshi Saito
  • Publication number: 20070001180
    Abstract: A semiconductor light emitting device comprises an element that emits light and a substrate on a main surface of which the element is mounted. The main surface of the substrate composed of two areas, (i) a mount area which is rectangle and on which the element is mounted, and (ii) a pad area that is equipped with a pad for wire bonding. The pad area is contiguous to the mount area on one side of the mount area, and the pad area decreases in width continuously or stepwise in a direction away from the one side.
    Type: Application
    Filed: September 21, 2004
    Publication date: January 4, 2007
    Inventors: Kunihiko Obara, Mineo Tokunaga, Hideo Nagai
  • Publication number: 20060284195
    Abstract: An LED array chip (2), which is one type of a semiconductor light emitting device, includes an array of LEDs (6), a base substrate (4) supporting the array of the LEDs (6), and a phosphor film (48). The array of LEDs (6) is formed by dividing a multilayer epitaxial structure including a light emitting layer into a plurality of portions. The phosphor film (48) covers an upper surface of the array of the LEDs (6) and a part of every side surface of the array of LEDs (6). Here, the part extends from the upper surface to the light emitting layer.
    Type: Application
    Filed: August 9, 2004
    Publication date: December 21, 2006
    Inventor: Hideo Nagai
  • Patent number: 7101061
    Abstract: A light emission apparatus that can restrict deterioration of resin used for the light emission apparatus, and that has a reasonable structure fit for actual use is provided, in which a light reflective layer is provided to cover the side surfaces of the chips 26 provided in the concave 2a. According to this, excitation light reflected by the phosphor layer 32, such as ultraviolet light, is reflected again by the light reflective layer 27. Therefore, the excitation light will not reach the resin layer 21, thereby restraining the deterioration of the resin. Moreover, the light reflective layer 27 covers the side surfaces of the chips 26, thereby efficiently conducting the heat emitted from the chips 26 to the metal substrate 20 via the resin layer 21. This improves the heat-dissipation efficiency of the chips 26.
    Type: Grant
    Filed: October 17, 2003
    Date of Patent: September 5, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideo Nagai, Shozo Oshio, Masaaki Yuri
  • Publication number: 20060180818
    Abstract: An LED array chip (2) includes blue LEDs (6) and red LEDs (8). The blue LEDs (6) are formed by epitaxial growth on an SiC substrate (4). Bonding pads (46 and 48) are formed on the SiC substrate (4) in a wafer fabrication process. The red LEDs (8) are separately manufactured from the blue LEDs (6), and flip-chip mounted on the bonding pads (46 and 48) formed on the SiC substrate.
    Type: Application
    Filed: July 22, 2004
    Publication date: August 17, 2006
    Inventors: Hideo Nagai, Kenji Mukai
  • Publication number: 20060151793
    Abstract: The present invention aims to provide a semiconductor light emitting device (1) that may be firmly attached to a substrate with maintaining excellent light emitting efficiency, and a manufacturing method of the same, and a lighting apparatus and a display apparatus using the same. In order to achieve the above object, the semiconductor light emitting device (1) according to the present invention includes a luminous layer (23), a light transmission layer (10) disposed over a main surface of the luminous layer (23), and having depressions (11) on a surface facing away from the luminous layer (23), and a transmission membrane (70) disposed on the light transmission layer (10) so as to follow contours of the depressions, and light from the luminous layer (23) is irradiated so as to pass through the light transmission layer (10) and the transmission membrane (70).
    Type: Application
    Filed: July 12, 2004
    Publication date: July 13, 2006
    Inventor: Hideo Nagai
  • Patent number: D528226
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: September 12, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideo Nagai, Yuji Omata
  • Patent number: D528672
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: September 19, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideo Nagai, Noriyasu Tanimoto, Keiji Nishimoto, Takeshi Saito
  • Patent number: D528994
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: September 26, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuyuki Matsui, Hideo Nagai, Kenji Mukai, Masanori Shimizu
  • Patent number: D529202
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: September 26, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideo Nagai, Yuji Omata
  • Patent number: D529203
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: September 26, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Hideo Nagai
  • Patent number: D530288
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: October 17, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventor: Hideo Nagai
  • Patent number: D532142
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: November 14, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuyuki Matsui, Hideo Nagai, Kenji Mukai, Masanori Shimizu
  • Patent number: D532148
    Type: Grant
    Filed: December 16, 2004
    Date of Patent: November 14, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Nobuyuki Matsui, Hideo Nagai, Kenji Mukai, Masanori Shimizu
  • Patent number: D532383
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: November 21, 2006
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideo Nagai, Noriyasu Tanimoto
  • Patent number: D535262
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: January 16, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takeshi Saito, Keiji Nishimoto, Noriyasu Tanimoto, Hideo Nagai
  • Patent number: D540751
    Type: Grant
    Filed: December 7, 2005
    Date of Patent: April 17, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Hideo Nagai, Noriyasu Tanimoto
  • Patent number: D541761
    Type: Grant
    Filed: September 1, 2006
    Date of Patent: May 1, 2007
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Takeshi Saito, Keiji Nishimoto, Noriyasu Tanimoto, Hideo Nagai