Patents by Inventor Ikuo Yoshihara

Ikuo Yoshihara 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).

  • Patent number: 7579638
    Abstract: A solid-state image pickup device is provided in which a pixel forming region 4 and a peripheral circuit forming region 20 are formed on the same semiconductor substrate, a first element isolation portion is formed by an element isolation layer 21 in which an insulating layer is buried into a semiconductor substrate 10 in the peripheral circuit forming region 20, a second element isolation portion is composed of an element isolation region 11 formed within the semiconductor substrate 10 and an element isolation layer 12 projected in the upper direction from the semiconductor substrate 10 in the pixel forming region 4 and an element isolation layer 21 of the first element isolation portion and the element isolation layer 12 of the second element isolation portion contain the same insulating layers 17, 18 and 19. This solid-state image pickup device has a structure capable of suppressing a noise relative to a pixel signal and which can be microminiaturized in the peripheral circuit forming region.
    Type: Grant
    Filed: April 29, 2008
    Date of Patent: August 25, 2009
    Assignee: Sony Corporation
    Inventor: Ikuo Yoshihara
  • Publication number: 20080210997
    Abstract: A solid-state image pickup device is provided in which a pixel forming region 4 and a peripheral circuit forming region 20 are formed on the same semiconductor substrate, a first element isolation portion is formed by an element isolation layer 21 in which an insulating layer is buried into a semiconductor substrate 10 in the peripheral circuit forming region 20, a second element isolation portion is composed of an element isolation region 11 formed within the semiconductor substrate 10 and an element isolation layer 12 projected in the upper direction from the semiconductor substrate 10 in the pixel forming region 4 and an element isolation layer 21 of the first element isolation portion and the element isolation layer 12 of the second element isolation portion contain the same insulating layers 17, 18 and 19. This solid-state image pickup device has a structure capable of suppressing a noise relative to a pixel signal and which can be microminiaturized in the peripheral circuit forming region.
    Type: Application
    Filed: April 29, 2008
    Publication date: September 4, 2008
    Inventor: Ikuo Yoshihara
  • Patent number: 7378695
    Abstract: A solid-state image pickup device is provided in which a pixel forming region 4 and a peripheral circuit forming region 20 are formed on the same semiconductor substrate, a first element isolation portion is formed by an element isolation layer 21 in which an insulating layer is buried into a semiconductor substrate 10 in the peripheral circuit forming region 20, a second element isolation portion is composed of an element isolation region 11 formed within the semiconductor substrate 10 and an element isolation layer 12 projected in the upper direction from the semiconductor substrate 10 in the pixel forming region 4 and an element isolation layer 21 of the first element isolation portion and the element isolation layer 12 of the second element isolation portion contain the same insulating layers 17, 18 and 19. This solid-state image pickup device has a structure capable of suppressing a noise relative to a pixel signal and which can be microminiaturized in the peripheral circuit forming region.
    Type: Grant
    Filed: June 28, 2005
    Date of Patent: May 27, 2008
    Assignee: Sony Corporation
    Inventor: Ikuo Yoshihara
  • Publication number: 20080073677
    Abstract: A solid-state imaging device with a semiconductor substrate; a pixel formation region in the substrate and including a pixel made of a photoelectric conversion element; and an element isolation portion in the substrate and including an element isolation insulating layer and an impurity element isolation region. The element isolation insulating layer is positioned in a surface of the substrate. The impurity element isolation region is positioned under the element isolation insulating layer and within the substrate. The impurity element isolation region has at least a portion with a width that is narrower than that of the element isolation insulating layer. The photoelectric conversion element extends to a position under the element isolation insulating layer of the element isolation portion.
    Type: Application
    Filed: November 16, 2007
    Publication date: March 27, 2008
    Applicant: SONY CORPORATION
    Inventor: Ikuo Yoshihara
  • Patent number: 7319217
    Abstract: A semiconductor image sensor module and a method for manufacturing thereof as well as a camera and a method for manufacturing thereof are provided in which a semiconductor image sensor chip and an image signal processing chip are connected with a minimum parasitic resistance and parasitic capacity and efficient heat dissipation of the image signal processing chip and shielding of light are simultaneously obtained.
    Type: Grant
    Filed: October 18, 2005
    Date of Patent: January 15, 2008
    Assignee: Sony Corporation
    Inventors: Ikuo Yoshihara, Masamitsu Yamanaka
  • Patent number: 7300810
    Abstract: A solid-state imaging device is provided in which noise to an image signal is restrained and miniaturization is facilitated in a peripheral circuit formation region. A solid-state imaging device includes a pixel formation region 4 and a peripheral circuit formation region 20 formed in the same semiconductor substrate; in the peripheral circuit formation region 20 a first element isolation portion is formed of an element isolation layer 21 in which an insulation layer is buried in a semiconductor substrate 10; in the pixel formation region 4 a second element isolation portion made of an element isolation region 11 formed inside the semiconductor substrate 10 and an element isolation layer 12 projecting upward from the semiconductor substrate 10 is formed; and a photoelectric conversion element 16 (14, 15) is formed extending to a position under the element isolation layer 12 of the second element isolation portion.
    Type: Grant
    Filed: November 16, 2006
    Date of Patent: November 27, 2007
    Assignee: Sony Corporation
    Inventor: Ikuo Yoshihara
  • Publication number: 20070235828
    Abstract: A semiconductor image sensor module and a method for manufacturing thereof as well as a camera and a method for manufacturing thereof are provided in which a semiconductor image sensor chip and an image signal processing chip are connected with a minimum parasitic resistance and parasitic capacity and efficient heat dissipation of the image signal processing chip and shielding of light are simultaneously obtained.
    Type: Application
    Filed: June 5, 2007
    Publication date: October 11, 2007
    Inventors: Ikuo Yoshihara, Masamitsu Yamanaka
  • Publication number: 20070092985
    Abstract: A solid-state imaging device is provided in which noise to an image signal is restrained and miniaturization is facilitated in a peripheral circuit formation region. A solid-state imaging device includes a pixel formation region 4 and a peripheral circuit formation region 20 formed in the same semiconductor substrate; in the peripheral circuit formation region 20 a first element isolation portion is formed of an element isolation layer 21 in which an insulation layer is buried in a semiconductor substrate 10; in the pixel formation region 4 a second element isolation portion made of an element isolation region 11 formed inside the semiconductor substrate 10 and an element isolation layer 12 projecting upward from the semiconductor substrate 10 is formed; and a photoelectric conversion element 16 (14, 15) is formed extending to a position under the element isolation layer 12 of the second element isolation portion.
    Type: Application
    Filed: November 16, 2006
    Publication date: April 26, 2007
    Inventor: Ikuo Yoshihara
  • Patent number: 7187023
    Abstract: A solid-state imaging device is provided in which noise to an image signal is restrained and miniaturization is facilitated in a peripheral circuit formation region. A solid-state imaging device includes a pixel formation region 4 and a peripheral circuit formation region 20 formed in the same semiconductor substrate; in the peripheral circuit formation region 20 a first element isolation portion is formed of an element isolation layer 21 in which an insulation layer is buried in a semiconductor substrate 10; in the pixel formation region 4 a second element isolation portion made of an element isolation region 11 formed inside the semiconductor substrate 10 and an element isolation layer 12 projecting upward from the semiconductor substrate 10 is formed; and a photoelectric conversion element 16 (14, 15) is formed extending to a position under the element isolation layer 12 of the second element isolation portion.
    Type: Grant
    Filed: May 25, 2005
    Date of Patent: March 6, 2007
    Assignee: Sony Corporation
    Inventor: Ikuo Yoshihara
  • Publication number: 20060091290
    Abstract: A semiconductor image sensor module and a method for manufacturing thereof as well as a camera and a method for manufacturing thereof are provided in which a semiconductor image sensor chip and an image signal processing chip are connected with a minimum parasitic resistance and parasitic capacity and efficient heat dissipation of the image signal processing chip and shielding of light are simultaneously obtained.
    Type: Application
    Filed: October 18, 2005
    Publication date: May 4, 2006
    Inventors: Ikuo Yoshihara, Masamitsu Yamanaka
  • Publication number: 20060081957
    Abstract: The present invention provides a solid-state imaging device having an array of unit pixels, each unit pixel including a photoelectric conversion element and an amplifier transistor for amplifying a signal corresponding to charge obtained by photoelectric conversion through the photoelectric conversion element and outputting the resultant signal. The amplifier transistor includes a buried channel MOS transistor. According to the present invention, 1/f noise can be basically reduced.
    Type: Application
    Filed: October 18, 2005
    Publication date: April 20, 2006
    Inventors: Kazuichiro Itonaga, Suzunori Endo, Ikuo Yoshihara
  • Patent number: 7005715
    Abstract: Problems in reliability and cross-talk of MRAM, which are intrinsically ascribable to the structure thereof, are solved at the same time.
    Type: Grant
    Filed: April 22, 2005
    Date of Patent: February 28, 2006
    Assignee: Sony Corporation
    Inventors: Ikuo Yoshihara, Makoto Motoyoshi
  • Publication number: 20060027888
    Abstract: A solid-state image pickup device is provided in which a pixel forming region 4 and a peripheral circuit forming region 20 are formed on the same semiconductor substrate, a first element isolation portion is formed by an element isolation layer 21 in which an insulating layer is buried into a semiconductor substrate 10 in the peripheral circuit forming region 20, a second element isolation portion is composed of an element isolation region 11 formed within the semiconductor substrate 10 and an element isolation layer 12 projected in the upper direction from the semiconductor substrate 10 in the pixel forming region 4 and an element isolation layer 21 of the first element isolation portion and the element isolation layer 12 of the second element isolation portion contain the same insulating layers 17, 18 and 19. This solid-state image pickup device has a structure capable of suppressing a noise relative to a pixel signal and which can be microminiaturized in the peripheral circuit forming region.
    Type: Application
    Filed: June 28, 2005
    Publication date: February 9, 2006
    Inventor: Ikuo Yoshihara
  • Publication number: 20050263804
    Abstract: A solid-state imaging device is provided in which noise to an image signal is restrained and miniaturization is facilitated in a peripheral circuit formation region. A solid-state imaging device includes a pixel formation region 4 and a peripheral circuit formation region 20 formed in the same semiconductor substrate; in the peripheral circuit formation region 20 a first element isolation portion is formed of an element isolation layer 21 in which an insulation layer is buried in a semiconductor substrate 10; in the pixel formation region 4 a second element isolation portion made of an element isolation region 11 formed inside the semiconductor substrate 10 and an element isolation layer 12 projecting upward from the semiconductor substrate 10 is formed; and a photoelectric conversion element 16 (14, 15) is formed extending to a position under the element isolation layer 12 of the second element isolation portion.
    Type: Application
    Filed: May 25, 2005
    Publication date: December 1, 2005
    Inventor: Ikuo Yoshihara
  • Patent number: 6943394
    Abstract: Problems in reliability and cross-talk of MRAM, which are intrinsically ascribable to the structure thereof, are solved at the same time.
    Type: Grant
    Filed: January 20, 2003
    Date of Patent: September 13, 2005
    Assignee: Sony Corporation
    Inventors: Ikuo Yoshihara, Makoto Motoyoshi
  • Publication number: 20050185435
    Abstract: Problems in reliability and cross-talk of MRAM, which are intrinsically ascribable to the structure thereof, are solved at the same time.
    Type: Application
    Filed: April 22, 2005
    Publication date: August 25, 2005
    Inventors: Ikuo Yoshihara, Makoto Motoyoshi
  • Patent number: 6909132
    Abstract: In a contact structure having a large aspect ratio in a LSI device incorporating DRAM cells and logics, for the purpose of preventing over-etching of a device isolation insulating film and an impurity diffusion layer and thereby minimizing junction leakage, a first etching stopper layer covering a peripheral MOS transistor and a second etching stopper layer overlying a capacitor section of a DRAM memory cell are formed. An impurity diffusion layer of the peripheral MOS transistor is connected to a metal wiring layer formed in an upper level of the capacitor section by an electrode layer extending through the first and second etching stopper layers. At least one of such impurity diffusion layers is connected to the electrode layer at its boundary with the device isolation insulating film, and depth of the bottom of the electrode layer formed on the device isolation insulating film from the surface of the impurity diffusion layer is shorter than the junction depth of the impurity diffusion layer.
    Type: Grant
    Filed: January 24, 2003
    Date of Patent: June 21, 2005
    Assignee: Sony Corporation
    Inventors: Ikuo Yoshihara, Wataro Futo
  • Publication number: 20030132525
    Abstract: In a contact structure having a large aspect ratio in a LSI device incorporating DRAM cells and logics, for the purpose of preventing over-etching of a device isolation insulating film and an impurity diffusion layer and thereby minimizing junction leakage, a first etching stopper layer covering a peripheral MOS transistor and a second etching stopper layer overlying a capacitor section of a DRAM memory cell are formed. An impurity diffusion layer of the peripheral MOS transistor is connected to a metal wiring layer formed in an upper level of the capacitor section by an electrode layer extending through the first and second etching stopper layers. At least one of such impurity diffusion layers is connected to the electrode layer at its boundary with the device isolation insulating film, and depth of the bottom of the electrode layer formed on the device isolation insulating film from the surface of the impurity diffusion layer is shorter than the junction depth of the impurity diffusion layer.
    Type: Application
    Filed: January 24, 2003
    Publication date: July 17, 2003
    Inventors: Ikuo Yoshihara, Wataro Futo
  • Patent number: 6362037
    Abstract: An N-type buried diffusion layer as a portion of the collector region of a bipolar transistor and an N-type buried diffusion layer of a memory cell region are simultaneously formed, and the buried diffusion layer of the memory cell region serves as a potential groove for electrons. The threshold voltage of a MOS transistor in the memory cell region is higher than the threshold voltage of a MOS transistor in a peripheral circuit region, preventing an increase in the standby current in the memory cell region. This increases the soft error resistance of the memory cell and prevents a decrease in the operating speed and an increase in the consumption power.
    Type: Grant
    Filed: August 10, 1998
    Date of Patent: March 26, 2002
    Assignee: Sony Corporation
    Inventors: Ikuo Yoshihara, Kazuaki Kurooka
  • Patent number: 6124617
    Abstract: An N-type buried diffusion layer as a portion of the collector region of a bipolar transistor and an N-type buried diffusion layer of a memory cell region are simultaneously formed, and the buried diffusion layer of the memory cell region serves as a potential groove for electrons. The threshold voltage of a MOS transistor in the memory cell region is higher than the threshold voltage of a MOS transistor in a peripheral circuit region, preventing an increase in the standby current in the memory cell region. This increases the soft error resistance of the memory cell and prevents a decrease in the operating speed and an increase in the consumption power.
    Type: Grant
    Filed: November 5, 1997
    Date of Patent: September 26, 2000
    Assignee: Sony Corporation
    Inventors: Ikuo Yoshihara, Kazuaki Kurooka