Patents by Inventor Ippei Kume

Ippei Kume 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: 20100123199
    Abstract: Provided is a semiconductor device including: a semiconductor substrate; a multi-layered wiring structure which is formed over the semiconductor substrate and in which a plurality of wiring layers, each of which is formed by a wiring and an insulating layer, are laminated; and a capacitive element having a lower electrode, a capacitor insulating layer, and an upper electrode which is embedded in the multi-layered wiring structure, wherein at least two or more of the wiring layers are provided between a lower capacitor wiring connected to the lower electrode and an upper capacitor wiring connected to the upper electrode.
    Type: Application
    Filed: November 6, 2009
    Publication date: May 20, 2010
    Applicant: NEC ELECTRONICS CORPORATION
    Inventors: Jun Kawahara, Yoshihiro Hayashi, Ippei Kume
  • Publication number: 20100006976
    Abstract: This invention provides a semiconductor device having a capacitor with reduced deterioration of dielectric constant and reduced leakage between upper and lower electrodes and a manufacturing method of such a semiconductor device. A capacity structure is configured by sequentially stacking a lower electrode, a capacitive insulation film, and an upper electrode on wiring or a contact plug. The capacity structure is of a thin-film capacitor structure having, at the interface between the lower electrode and the capacitive insulation film, a thin metal film having insulating properties and exhibiting a high dielectric constant.
    Type: Application
    Filed: February 27, 2008
    Publication date: January 14, 2010
    Inventors: Ippei Kume, Naoya Inoue, Yoshihiro Hayashi
  • Publication number: 20090309186
    Abstract: A semiconductor device is produced by fabricating a capacitor element including a lower electrode, a capacitor insulating film, and an upper electrode, and a thin-film resistor element, in the same step. As the lower electrode of the capacitor element is lined with a lower layer wiring layer (Cu wiring), the lower electrode has extremely low resistance substantially. As such, even if the film thickness of the lower electrode becomes thinner, parasitic resistance does not increased. The resistor element is formed to have the same film thickness as that of the lower electrode of the capacitor element. Since the film thickness of the lower electrode is thin, it works as a resistor having high resistance. In the top layer of the passive element, a passive element cap insulating film is provided, which works as an etching stop layer when etching a contact of the upper electrode of the capacitor element.
    Type: Application
    Filed: December 25, 2007
    Publication date: December 17, 2009
    Inventors: Naoya Inoue, Ippei Kume, Jun Kawahara, Yoshihiro Hayashi
  • Publication number: 20070262417
    Abstract: A semiconductor device has a capacitive structure formed by sequentially layering, on a wiring or conductive plug, a lower electrode, a capacitive insulation film, and an upper electrode. The semiconductor device has, as the capacitive structure, a thin-film capacitor having a lower electrode structure composed of an amorphous or microcrystalline film or a laminate of these films formed on a polycrystalline film.
    Type: Application
    Filed: May 8, 2007
    Publication date: November 15, 2007
    Applicants: NEC CORPORATION, NEC ELECTRONICS CORPORATION
    Inventors: Hiroto Ohtake, Naoya Inoue, Ippei Kume, Takeshi Toda, Yoshihiro Hayashi