Patents by Inventor Takahito Mafune

Takahito Mafune 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: 20100288615
    Abstract: A keyboard device includes: a plurality of arranged key tops; a support mechanism which supports each of the key tops so as to be elevatable; a membrane switch which outputs a switch signal when the key top moves down with an operation of the support mechanism performed upon pressing the key top; and an illumination mechanism which includes a light source and a light guiding member, and propagates light of the light source to the inside of the light guiding member so as to illuminate the key top, wherein the light guiding member is provided with a plurality of groove portions provided in the course of a path of the light and changing a light advancing direction, and wherein the light reaches the key top by the groove portions.
    Type: Application
    Filed: May 10, 2010
    Publication date: November 18, 2010
    Applicant: ALPS ELECTRIC CO., LTD
    Inventors: Takahito MAFUNE, Naoki YAMADA, Masahiro ISHIDA
  • Patent number: 7277147
    Abstract: A liquid crystal display includes a pair of opposing substrates in which a liquid crystal layer is disposed therebetween. Transparent electrodes are disposed on the surfaces on the liquid crystal layer sides of the substrates and lead-out wiring leads out the transparent electrodes. The lead-out wiring are formed on one substrate. At least a part of the lead-out wiring is formed by a combination of at least a transparent conductive layer and a conductive reflection-preventing layer.
    Type: Grant
    Filed: March 24, 2003
    Date of Patent: October 2, 2007
    Assignee: Alps Electric Co., Ltd.
    Inventors: Yasuhiro Miki, Yoshifumi Masumoto, Takahito Mafune
  • Publication number: 20060103802
    Abstract: The particle diameter of a conductive particle is set to one-third of an interval between adjacent terminals or below and 1 ?m or greater in groups of terminals. The conductive particle has a conductive layer covered with an insulating film. In the portions where the conductive particle is contacted with the terminals facing each other, the insulating film is removed to contact the conductive layer with the terminals.
    Type: Application
    Filed: November 8, 2005
    Publication date: May 18, 2006
    Inventors: Yasuhiro Miki, Manabu Kusano, Zennosuke Mitani, Takahito Mafune
  • Publication number: 20050259208
    Abstract: A liquid crystal display includes a pair of opposing substrates in which a liquid crystal layer is disposed therebetween. Transparent electrodes are disposed on the surfaces on the liquid crystal layer sides of the substrates and lead-out wiring leads out the transparent electrodes. The lead-out wiring are formed on one substrate. At least a part of the lead-out wiring is formed by a combination of at least a transparent conductive layer and a conductive reflection-preventing layer.
    Type: Application
    Filed: March 24, 2003
    Publication date: November 24, 2005
    Inventors: Yasuhiro Miki, Yoshifumi Masumoto, Takahito Mafune
  • Publication number: 20050057713
    Abstract: In a transflective layer constituting a transflective film, transmitting openings are formed beyond a portion corresponding to a display region of the liquid crystal display panel in which pixels are formed. In this way, the transmitting openings are formed beyond a portion corresponding to a display region of the liquid crystal display panel, so that the generation of stains or whitened portions on the reflecting surface during the process for forming the transflective layer can be prevented.
    Type: Application
    Filed: September 7, 2004
    Publication date: March 17, 2005
    Inventors: Takahito Mafune, Manabu Kusano
  • Patent number: 6734933
    Abstract: A reflection liquid crystal display comprises a first transparent substrate, a second transparent substrate disposed opposite to the first transparent substrate, and a liquid crystal layer sandwiched between the first and the second transparent substrate. A transparent electrode layer and an alignment layer are formed in that order on the inner surface of the first transparent substrate, a reflecting polarizing film formed by laminating a transparent scattering layer and a light absorbing layer is placed on the outer surface of the first transparent substrate, a transparent electrode layer and an alignment layer are formed in that order on the inner surface of the second transparent substrate, and a phase plate and a polarizing plate are placed in that order on the outer surface of the second transparent substrate.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: May 11, 2004
    Assignee: Alps Electric Co., Ltd.
    Inventor: Takahito Mafune
  • Publication number: 20030231276
    Abstract: The particle diameter of a conductive particle is set to one-third of an interval between adjacent terminals or below and 1 &mgr;m or greater in groups of terminals. The conductive particle has a conductive layer covered with an insulating film. In the portions where the conductive particle is contacted with the terminals facing each other, the insulating film is removed to contact the conductive layer with the terminals.
    Type: Application
    Filed: June 16, 2003
    Publication date: December 18, 2003
    Applicant: ALPS ELECTRIC CO., LTD.
    Inventors: Yasuhiro Miki, Manabu Kusano, Zennosuke Mitani, Takahito Mafune
  • Publication number: 20010046012
    Abstract: A reflection liquid crystal display comprises a first transparent substrate, a second transparent substrate disposed opposite to the first transparent substrate, and a liquid crystal layer sandwiched between the first and the second transparent substrate. A transparent electrode layer and an alignment layer are formed in that order on the inner surface of the first transparent substrate, a reflecting polarizing film formed by laminating a transparent scattering layer and a light absorbing layer is placed on the outer surface of the first transparent substrate, a transparent electrode layer and an alignment layer are formed in that order on the inner surface of the second transparent substrate, and a phase plate and a polarizing plate are placed in that order on the outer surface of the second transparent substrate.
    Type: Application
    Filed: September 14, 1999
    Publication date: November 29, 2001
    Inventor: TAKAHITO MAFUNE
  • Patent number: 6163667
    Abstract: Disclosed is a liquid crystal display device free from display reversal on the screen and capable of being reduced in thickness. A liquid crystal display device of the type in which a transparent electrode and an orientation layer are sequentially formed on the inner side of each of a pair of transparent substrates opposed to each other through the intermediation of a liquid crystal layer and in which a pair of polarizing plates are opposed to each other through the intermediation of the transparent substrates and the liquid crystal layer, wherein a semi-transmissive scattering layer 25 is provided on the outer side of at least one of the pair of polarizing plates, wherein the angle .theta..sub.2 made by the orientation layer 14 of the transparent substrate 4 arranged on the semi-transmissive scattering layer 25 side and the absorption axis of the polarizing plate 7 adjacent to the transparent substrate 4 is set to be 70 to 90 degrees, and wherein the angle .theta..sub.
    Type: Grant
    Filed: October 26, 1999
    Date of Patent: December 19, 2000
    Assignee: Alps Electric Co., Ltd.
    Inventor: Takahito Mafune