Patents by Inventor Atsushi Fujiki

Atsushi Fujiki 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: 8570617
    Abstract: An image reading apparatus includes an image reader, an image adjuster and an execution controller that causes the image reader to read an adjustment document and causes the image adjuster to adjust image data generated by the image reader. The adjustment document includes line images and parameter images at positions spaced apart in a main scanning direction in a margin area where the line images are not provided. The parameter images indicate parameters used in image adjustment processing. The execution controller judges whether the image data corresponding to predetermined positions in the main scanning direction coincide, selects one of the image data judged to coincide, and causes the image adjuster to perform the image adjustment using the selected image data and the parameter indicated by the image data generated by reading the parameter image at the position in the main scanning direction of the selected image data.
    Type: Grant
    Filed: October 31, 2011
    Date of Patent: October 29, 2013
    Assignee: Kyocera Mita Corporation
    Inventors: Yasuyuki Yabuuchi, Atsushi Fujiki, Masaki Baba
  • Patent number: 8564112
    Abstract: To improve the performance and reliability of semiconductor devices. For the semiconductor chip CP1, power MOSFETs Q1 and Q2 for the switch, a diode DD1 for detecting the heat generation of the power MOSFET Q1, a diode DD2 for detecting the heat generation of the power MOSFET Q2, and plural pad electrodes PD are formed. The power MOSFET Q1 and the diode DD1 are arranged in a first MOSFET region RG1 on the side of a side SD1, and the power MOSFET Q2 and the diode DD2 are arranged in a second MOSFET region RG2 on the side of a side SD2. The diode DD1 is arranged along the side SD1, the diode DD2 is arranged along the side SD2, and all pad electrodes PD other than the pad electrodes PDS1 and PDS2 for the source are arranged along a side SD3 between the diodes DD1 and DD2.
    Type: Grant
    Filed: October 19, 2012
    Date of Patent: October 22, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Hiroyuki Nakamura, Atsushi Fujiki, Tatsuhiro Seki, Nobuya Koike, Yukihiro Sato, Kisho Ashida
  • Patent number: 8441065
    Abstract: A semiconductor device which combines reliability and the guarantee of electrical characteristics is provided. A power MOSFET and a protection circuit formed over the same semiconductor substrate are provided. The power MOSFET is a trench gate vertical type P-channel MOSFET and the conduction type of the gate electrode is assumed to be P-type. The protection circuit includes a planar gate horizontal type offset P-channel MOSFET and the conduction type of the gate electrode is assumed to be N-type. These gate electrode and gate electrode are formed in separate steps.
    Type: Grant
    Filed: August 5, 2010
    Date of Patent: May 14, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Hirokatsu Suzuki, Atsushi Fujiki, Yoshito Nakazawa
  • Publication number: 20130082334
    Abstract: A semiconductor device is improved in reliability. A switching power MOSFET and a sense MOSFET for sensing a current flowing in the power MOSFET, which is smaller in area than the power MOSFET, are formed in one semiconductor chip. The semiconductor chip is mounted over a chip mounting portion via a conductive bonding material, and sealed in a resin. Over the main surface of the semiconductor chip, a metal plate is bonded to a source pad electrode of the power MOSFET. In the plan view, the metal plate does not overlap a sense MOSFET region where the sense MOSFET is formed. The metal plate is bonded to the source pad electrode so as to surround three of the sides of the sense MOSFET region.
    Type: Application
    Filed: September 12, 2012
    Publication date: April 4, 2013
    Inventors: Hiroyuki NAKAMURA, Yukihiro Sato, Atsushi Fujiki, Tatsuhiro Seki
  • Patent number: 8299599
    Abstract: To improve the performance and reliability of semiconductor devices. For the semiconductor chip CP1, power MOSFETs Q1 and Q2 for the switch, a diode DD1 for detecting the heat generation of the power MOSFET Q1, a diode DD2 for detecting the heat generation of the power MOSFET Q2, and plural pad electrodes PD are formed. The power MOSFET Q1 and the diode DD1 are arranged in a first MOSFET region RG1 on the side of a side SD1, and the power MOSFET Q2 and the diode DD2 are arranged in a second MOSFET region RG2 on the side of a side SD2. The diode DD1 is arranged along the side SD1, the diode DD2 is arranged along the side SD2, and all pad electrodes PD other than the pad electrodes PDS1 and PDS2 for the source are arranged along a side SD3 between the diodes DD1 and DD2.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: October 30, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Hiroyuki Nakamura, Atsushi Fujiki, Tatsuhiro Seki, Nobuya Koike, Yukihiro Sato, Kisho Ashida
  • Publication number: 20120261825
    Abstract: It is made for the layout of the mounting wiring at the time of mounting to become efficient by changing the structure of a semiconductor device. A first chip is mounted on a first die pad, and a second chip is also mounted on a second die pad. A first die pad and a second die pad do division structure in parallel to the first side and second side of sealing body 40. As a result, the pin for an output from a first chip and the pin for control of the circuit for a drive can make it able to project from a counter direction, and can set the wiring layout at the time of mounting as the minimum route.
    Type: Application
    Filed: June 26, 2012
    Publication date: October 18, 2012
    Inventors: Nobuya KOIKE, Atsushi Fujiki, Norio Kido, Yukihiro Sato, Hiroyuki Nakamura
  • Patent number: 8232629
    Abstract: It is made for the layout of the mounting wiring at the time of mounting to become efficient by changing the structure of a semiconductor device. A first chip is mounted on a first die pad, and a second chip is also mounted on a second die pad. A first die pad and a second die pad do division structure in parallel to the first side and second side of sealing body 40. As a result, the pin for an output from a first chip and the pin for control of the circuit for a drive can make it able to project from a counter direction, and can set the wiring layout at the time of mounting as the minimum route.
    Type: Grant
    Filed: August 20, 2007
    Date of Patent: July 31, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Nobuya Koike, Atsushi Fujiki, Norio Kido, Yukihiro Sato, Hiroyuki Nakamura
  • Publication number: 20120133996
    Abstract: An image reading apparatus includes an image reader, an image adjuster and an execution controller that causes the image reader to read an adjustment document and causes the image adjuster to adjust image data generated by the image reader. The adjustment document includes line images and parameter images at positions spaced apart in a main scanning direction in a margin area where the line images are not provided. The parameter images indicate parameters used in image adjustment processing. The execution controller judges whether the image data corresponding to predetermined positions in the main scanning direction coincide, selects one of the image data judged to coincide, and causes the image adjuster to perform the image adjustment using the selected image data and the parameter indicated by the image data generated by reading the parameter image at the position in the main scanning direction of the selected image data.
    Type: Application
    Filed: October 31, 2011
    Publication date: May 31, 2012
    Applicant: KYOCERA MITA CORPORATION
    Inventors: Yasuyuki Yabuuchi, Atsushi Fujiki, Masaki Baba
  • Patent number: 8114710
    Abstract: The radiation performance of a resin sealed semiconductor package is enhanced and further the fabrication yield thereof is enhanced. A drain terminal coupled to the back surface drain electrode of a semiconductor chip is exposed at the back surface of an encapsulation resin section. Part of the following portion and terminal is exposed at the top surface of the encapsulation resin section: the first portion of a source terminal coupled to the source pad electrode of the semiconductor chip and a gate terminal coupled to the gate pad electrode of the semiconductor chip. The remaining part of the second portion of the source terminal and the gate terminal is exposed at the back surface of the encapsulation resin section. When this semiconductor device is manufactured, bonding material and a film member are placed between the drain terminal and the semiconductor chip.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: February 14, 2012
    Assignee: Renesas Electronics Corporation
    Inventors: Akira Muto, Nobuya Koike, Katsuo Arai, Atsushi Fujiki
  • Publication number: 20110215400
    Abstract: To improve the performance and reliability of semiconductor devices. For the semiconductor chip CP1, power MOSFETs Q1 and Q2 for the switch, a diode DD1 for detecting the heat generation of the power MOSFET Q1, a diode DD2 for detecting the heat generation of the power MOSFET Q2, and plural pad electrodes PD are formed. The power MOSFET Q1 and the diode DD1 are arranged in a first MOSFET region RG1 on the side of a side SD1, and the power MOSFET Q2 and the diode DD2 are arranged in a second MOSFET region RG2 on the side of a side SD2. The diode DD1 is arranged along the side SD1, the diode DD2 is arranged along the side SD2, and all pad electrodes PD other than the pad electrodes PDS1 and PDS2 for the source are arranged along a side SD3 between the diodes DD1 and DD2.
    Type: Application
    Filed: March 3, 2011
    Publication date: September 8, 2011
    Inventors: Hiroyuki NAKAMURA, Atsushi FUJIKI, Tatsuhiro SEKI, Nobuya KOIKE, Yukihiro SATO, Kisho ASHIDA
  • Publication number: 20100315751
    Abstract: A semiconductor device which combines reliability and the guarantee of electrical characteristics is provided. A power MOSFET and a protection circuit formed over the same semiconductor substrate are provided. The power MOSFET is a trench gate vertical type P-channel MOSFET and the conduction type of the gate electrode is assumed to be P-type. The protection circuit includes a planar gate horizontal type offset P-channel MOSFET and the conduction type of the gate electrode is assumed to be N-type. These gate electrode and gate electrode are formed in separate steps.
    Type: Application
    Filed: August 5, 2010
    Publication date: December 16, 2010
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Hirokatsu Suzuki, Atsushi Fujiki, Yoshito Nakazawa
  • Publication number: 20100308421
    Abstract: The size of a semiconductor device is reduced. A semiconductor chip in which a power MOSFET is placed above a semiconductor chip in which another power MOSFET is formed and they are sealed with an encapsulation resin portion. The semiconductor chips are so arranged that the upper semiconductor chip does not overlap with the area positioned directly above a gate pad electrode of the lower semiconductor chip. The semiconductor chips are identical in size and the respective source pad electrodes and gate pad electrodes of the lower semiconductor chip and the upper semiconductor chip are identical in shape and arrangement. The lower semiconductor chip and the upper semiconductor chip are arranged with their respective centers displaced from each other.
    Type: Application
    Filed: April 26, 2010
    Publication date: December 9, 2010
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Akira MUTO, Yuichi MACHIDA, Nobuya KOIKE, Atsushi FUJIKI, Masaki TAMURA
  • Publication number: 20090215230
    Abstract: The radiation performance of a resin sealed semiconductor package is enhanced and further the fabrication yield thereof is enhanced. A drain terminal coupled to the back surface drain electrode of a semiconductor chip is exposed at the back surface of an encapsulation resin section. Part of the following portion and terminal is exposed at the top surface of the encapsulation resin section: the first portion of a source terminal coupled to the source pad electrode of the semiconductor chip and a gate terminal coupled to the gate pad electrode of the semiconductor chip. The remaining part of the second portion of the source terminal and the gate terminal is exposed at the back surface of the encapsulation resin section. When this semiconductor device is manufactured, bonding material and a film member are placed between the drain terminal and the semiconductor chip.
    Type: Application
    Filed: January 23, 2009
    Publication date: August 27, 2009
    Inventors: Akira MUTO, Nobuya Koike, Katsuo Arai, Atsushi Fujiki
  • Patent number: 7482861
    Abstract: A power MOSFET Qp and a protection circuit 3 are formed over a semiconductor substrate to constitute a construction in which the power MOSFET Qp and the protection circuit 3 are electrically separated from each other. Then, a screening voltage is applied between the gate electrode and the source electrode of the power MOSFET Qp which is electrically separated from the protection circuit 3, thereby eliminating a power MOSFET Qp having a latent defect. Subsequently, a non-defective power MOSFET Qp and the protection circuit 3 are electrically connected by a bonding wire.
    Type: Grant
    Filed: August 28, 2000
    Date of Patent: January 27, 2009
    Assignee: Hitachi, Ltd.
    Inventors: Atsushi Fujiki, Tetsuo Iijima
  • Publication number: 20080054422
    Abstract: It is made for the layout of the mounting wiring at the time of mounting to become efficient by changing the structure of a semiconductor device. A first chip is mounted on a first die pad, and a second chip is also mounted on a second die pad. A first die pad and a second die pad do division structure in parallel to the first side and second side of sealing body 40. As a result, the pin for an output from a first chip and the pin for control of the circuit for a drive can make it able to project from a counter direction, and can set the wiring layout at the time of mounting as the minimum route.
    Type: Application
    Filed: August 20, 2007
    Publication date: March 6, 2008
    Inventors: Nobuya KOIKE, Atsushi FUJIKI, Norio KIDO, Yukihiro SATO, Hiroyuki NAKAMURA
  • Publication number: 20070138566
    Abstract: A semiconductor device which combines reliability and the guarantee of electrical characteristics is provided. A power MOSFET and a protection circuit formed over the same semiconductor substrate are provided. The power MOSFET is a trench gate vertical type P-channel MOSFET and the conduction type of the gate electrode is assumed to be P-type. The protection circuit includes a planar gate horizontal type offset P-channel MOSFET and the conduction type of the gate electrode is assumed to be N-type. These gate electrode and gate electrode are formed in separate steps.
    Type: Application
    Filed: December 14, 2006
    Publication date: June 21, 2007
    Inventors: Hirokatsu Suzuki, Atsushi Fujiki, Yoshito Nakazawa
  • Publication number: 20050286194
    Abstract: The object of the invention is to protect a power MOS transistor using a transistor having trench structure from overcurrent and to enhance the reliability. To achieve the object, a power MOS transistor, a transistor for detecting current for detecting the current of the power MOS transistor and generating a detection signal supplied to an external control circuit and devices configuring a protection circuit for detecting the current of the power MOS transistor and inhibiting current by forcedly dropping the gate voltage of the power MOS transistor when current equal to or exceeding a predetermined value flows are provided in the same semiconductor chip.
    Type: Application
    Filed: April 22, 2005
    Publication date: December 29, 2005
    Inventors: Atsushi Fujiki, Masatoshi Nakasu
  • Patent number: 6496049
    Abstract: This semiconductor integrated circuit is constituted by any one of a p-channel MOS transistor and an n-channel MOS transistor, and is connected between the control terminal and the common terminal so as to produce predetermined voltage. The comparing circuit is operated in response to a control voltage applied between the control terminal and the common terminal so as to compare the predetermined reference voltage with the current-detected voltage which is obtained from the current detecting circuit. The gate controlling MOS transistor controls a gate voltage of the power MOS transistor based upon the comparison output of the comparing circuit. Then, all of these structural members are formed on the same semiconductor substrate.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: December 17, 2002
    Assignee: Hitachi, Ltd.
    Inventors: Nobuo Tsukagoshi, Masatoshi Nakasu, Atsushi Fujiki, Kazuaki Ohsawa
  • Publication number: 20020017941
    Abstract: This semiconductor integrated circuit is constituted by any one of a p-channel MOS transistor and an n-channel MOS transistors and is connected between the control terminal and the common terminal so as to produce predetermined voltage. The comparing circuit is operated in response to a control voltage applied between the control terminal and the common terminal so as to compare the predetermined reference voltage with the current-detected voltage which is obtained from the current detecting circuit. The gate controlling MOS transistor controls a gate voltage of the power MOS transistor based upon the comparison output of the comparing circuit. Then, all of these structural members are formed on the same semiconductor substrate.
    Type: Application
    Filed: July 19, 2001
    Publication date: February 14, 2002
    Inventors: Nobuo Tsukagoshi, Masatoshi Nakasu, Atsushi Fujiki, Kazuaki Ohsawa
  • Patent number: 6218889
    Abstract: A power MOSFET Qp and a protection circuit 3 are formed over a semiconductor substrate to constitute a construction in which the power MOSFET Qp and the protection circuit 3 are electrically separated from each other. Then, a screening voltage is applied between the gate electrode and the source electrode of the power MOSFET Qp which is electrically separated from the protection circuit 3, thereby eliminating a power MOSFET Qp having a latent defect. Subsequently, a non-defective power MOSFET Qp and the protection circuit 3 are electrically connected by a bonding wire.
    Type: Grant
    Filed: December 8, 1998
    Date of Patent: April 17, 2001
    Assignee: Hitachi, Ltd.
    Inventors: Atsushi Fujiki, Tetsuo Iijima