Patents by Inventor Yukihiro Sato

Yukihiro Sato 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: 9230831
    Abstract: There is provided a technology enabling the improvement of the reliability of a semiconductor device manufactured by physically fixing separately formed chip mounting portion and lead frame. A feature of an embodiment resides in that, a second junction portion formed in a suspension lead is fitted into a first junction portion formed in a chip mounting portion, thereby to physically fix the chip mounting portion and the suspension lead. Specifically, the first junction portion is formed of a concave part disposed in the surface of the chip mounting portion. The second junction portion forms a part of the suspension lead.
    Type: Grant
    Filed: February 3, 2015
    Date of Patent: January 5, 2016
    Assignee: Renesas Electronics Corporation
    Inventors: Yukihiro Sato, Nobuya Koike
  • Patent number: 9214412
    Abstract: A semiconductor device includes a first chip mounting portion, a first semiconductor chip arranged over the first chip mounting portion, a first pad formed in a surface of the first semiconductor chip, a first lead which serves as an external coupling terminal, a first conductive member which electrically couples the first pad and the first lead, and a sealing body which seals a part of the first chip mounting portion, the first semiconductor chip, a part of the first lead, and the first conductive member. The first conductive member includes a first plate-like portion, and a first support portion formed integrally with the first plate-like portion. An end of the first support portion is exposed from the sealing body, and the first support portion is formed with a first bent portion.
    Type: Grant
    Filed: June 15, 2014
    Date of Patent: December 15, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Katsuhiko Funatsu, Yukihiro Sato, Yuichi Yato, Tomoaki Uno
  • Publication number: 20150325506
    Abstract: There is provided a technology enabling the improvement of the reliability of a semiconductor device manufactured by physically fixing separately formed chip mounting portion and lead frame. A feature of an embodiment resides in that, a second junction portion formed in a suspension lead is fitted into a first junction portion formed in a chip mounting portion, thereby to physically fix the chip mounting portion and the suspension lead. Specifically, the first junction portion is formed of a concave part disposed in the surface of the chip mounting portion. The second junction portion forms a part of the suspension lead.
    Type: Application
    Filed: July 21, 2015
    Publication date: November 12, 2015
    Inventors: Yukihiro SATO, Nobuya KOIKE
  • Patent number: 9142479
    Abstract: Provided is an electronic device having a semiconductor device and a mounting board. The semiconductor device has a die pad, a semiconductor chip on the die pad, a coupling member coupling the die pad to the semiconductor chip, and a semiconductor package member covering the upper portion of the semiconductor chip and the side surface of the die pad. In this semiconductor device, the plane area of the coupling member coupling the mounting board to the die pad is smaller than the plane area of the lower surface of the die pad exposed from the semiconductor package material. This makes it possible to reduce separation between the die pad and the semiconductor chip resulting from cracks, due to temperature cycling, of the coupling member present between the die pad and the semiconductor chip.
    Type: Grant
    Filed: August 22, 2013
    Date of Patent: September 22, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Kenya Kawano, Hiroyuki Nakamura, Yukihiro Sato
  • Patent number: 9129979
    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: June 26, 2012
    Date of Patent: September 8, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Nobuya Koike, Atsushi Fujiki, Norio Kido, Yukihiro Sato, Hiroyuki Nakamura
  • Publication number: 20150214209
    Abstract: To improve the reliability in applying a tape to the rear surface of a substrate while securing the heat resistance of the tape applied to the rear surface of the substrate. There is a gap between a bottom surface of a ditch provided in a support member and an upper surface of a driver IC chip. On the other hand, the upper surface side of a lead frame is supported by the support member so that the bottom surface of the ditch contacts the upper surface of a Low-MOS clip mounted over a Low-MOS chip. Thus, even in a state where the driver IC chip and the Low-MOS chip are mounted on the upper surface side of the lead frame, the tape can be reliably applied to the rear surface of the lead frame (in particular, to the rear surface of the product region).
    Type: Application
    Filed: April 13, 2015
    Publication date: July 30, 2015
    Inventors: Katsuhiko Funatsu, Tomoaki Uno, Toru Ueguri, Yukihiro Sato
  • Publication number: 20150187606
    Abstract: There is provided a technology enabling the improvement of the reliability of a semiconductor device manufactured by physically fixing separately formed chip mounting portion and lead frame. A feature of an embodiment resides in that, a second junction portion formed in a suspension lead is fitted into a first junction portion formed in a chip mounting portion, thereby to physically fix the chip mounting portion and the suspension lead. Specifically, the first junction portion is formed of a concave part disposed in the surface of the chip mounting portion. The second junction portion forms a part of the suspension lead.
    Type: Application
    Filed: February 3, 2015
    Publication date: July 2, 2015
    Inventors: Yukihiro SATO, Nobuya KOIKE
  • Patent number: 9029197
    Abstract: To improve the reliability in applying a tape to the rear surface of a substrate while securing the heat resistance of the tape applied to the rear surface of the substrate. There is a gap between a bottom surface of a ditch provided in a support member and an upper surface of a driver IC chip. On the other hand, the upper surface side of a lead frame is supported by the support member so that the bottom surface of the ditch contacts the upper surface of a Low-MOS clip mounted over a Low-MOS chip. Thus, even in a state where the driver IC chip and the Low-MOS chip are mounted on the upper surface side of the lead frame, the tape can be reliably applied to the rear surface of the lead frame (in particular, to the rear surface of the product region).
    Type: Grant
    Filed: September 25, 2013
    Date of Patent: May 12, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Katsuhiko Funatsu, Tomoaki Uno, Toru Ueguri, Yukihiro Sato
  • Patent number: 8994159
    Abstract: To prevent, in a resin-sealed type semiconductor package, generation of cracks in a die bonding material used for mounting of a semiconductor chip. A semiconductor chip is mounted over the upper surface of a die pad via a die bonding material, followed by sealing with an insulating resin. The top surface of the die pad to be brought into contact with the insulating resin is surface-roughened, while the bottom surface of the die pad and an outer lead portion are not surface-roughened.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: March 31, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Hiroyuki Nakamura, Akira Muto, Nobuya Koike, Atsushi Nishikizawa, Yukihiro Sato, Katsuhiko Funatsu
  • Patent number: 8975733
    Abstract: There is provided a technology enabling the improvement of the reliability of a semiconductor device manufactured by physically fixing separately formed chip mounting portion and lead frame. A feature of an embodiment resides in that, a second junction portion formed in a suspension lead is fitted into a first junction portion formed in a chip mounting portion, thereby to physically fix the chip mounting portion and the suspension lead. Specifically, the first junction portion is formed of a concave part disposed in the surface of the chip mounting portion. The second junction portion forms a part of the suspension lead.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: March 10, 2015
    Assignee: Renesas Electronics Corporation
    Inventors: Yukihiro Sato, Nobuya Koike
  • Publication number: 20150001699
    Abstract: A semiconductor device includes a first chip mounting portion, a first semiconductor chip arranged over the first chip mounting portion, a first pad formed in a surface of the first semiconductor chip, a first lead which serves as an external coupling terminal, a first conductive member which electrically couples the first pad and the first lead, and a sealing body which seals a part of the first chip mounting portion, the first semiconductor chip, a part of the first lead, and the first conductive member. The first conductive member includes a first plate-like portion, and a first support portion formed integrally with the first plate-like portion. An end of the first support portion is exposed from the sealing body, and the first support portion is formed with a first bent portion.
    Type: Application
    Filed: June 15, 2014
    Publication date: January 1, 2015
    Inventors: Katsuhiko Funatsu, Yukihiro Sato, Yuichi Yato, Tomoaki Uno
  • Patent number: 8766824
    Abstract: An electronic apparatus includes a detection circuit having at least a first contact point, a second contact point and a third contact point; an input key unit changes states of the individual contact points based on an accepted input operation, and a detection-circuit control unit obtains a detection signal corresponding to changed states of the individual contact points from the detection circuit, and detects the input operation from the obtained detection signal.
    Type: Grant
    Filed: March 3, 2011
    Date of Patent: July 1, 2014
    Assignee: Fujitsu Limited
    Inventors: Hitoshi Yamasaki, Yukihiro Sato, Kazumasa Sugawara
  • Publication number: 20140110712
    Abstract: A semiconductor wafer including patterns transferred to a plurality of shot regions of the semiconductor wafer respectively, a plurality of chip regions being formed in the plurality of shot regions respectively, a plurality of first dummy patterns being formed respectively in a first chip region of the plurality of chip regions of each of the plurality of shot regions, the plurality of first dummy patterns being arranged repeatedly in a first manner, a plurality of second dummy patterns being formed respectively in a second chip region of the plurality of chip regions of each of the plurality of shot regions, the plurality of second dummy patterns being arranged repeatedly in a second manner different from the first manner.
    Type: Application
    Filed: September 18, 2013
    Publication date: April 24, 2014
    Applicant: FUJITSU SEMICONDUCTOR LIMITED
    Inventors: Shoko Saito, Tomoyuki Okada, Kanji Takeuchi, MITSUFUMI NAOE, Masahiko Minemura, Yukihiro Sato, Yoshito Konno, Yasuhiko Inada, Tomoaki Inaoka, Naoya SASHIDA
  • Publication number: 20140087520
    Abstract: To improve the reliability in applying a tape to the rear surface of a substrate while securing the heat resistance of the tape applied to the rear surface of the substrate. There is a gap between a bottom surface of a ditch provided in a support member and an upper surface of a driver IC chip. On the other hand, the upper surface side of a lead frame is supported by the support member so that the bottom surface of the ditch contacts the upper surface of a Low-MOS clip mounted over a Low-MOS chip. Thus, even in a state where the driver IC chip and the Low-MOS chip are mounted on the upper surface side of the lead frame, the tape can be reliably applied to the rear surface of the lead frame (in particular, to the rear surface of the product region).
    Type: Application
    Filed: September 25, 2013
    Publication date: March 27, 2014
    Applicant: Renesas Electronics Corporation
    Inventors: Katsuhiko Funatsu, Tomoaki Uno, Toru Ueguri, Yukihiro Sato
  • Publication number: 20140061821
    Abstract: Provided is an electronic device having a semiconductor device and a mounting board. The semiconductor device has a die pad, a semiconductor chip on the die pad, a coupling member coupling the die pad to the semiconductor chip, and a semiconductor package member covering the upper portion of the semiconductor chip and the side surface of the die pad. In this semiconductor device, the plane area of the coupling member coupling the mounting board to the die pad is smaller than the plane area of the lower surface of the die pad exposed from the semiconductor package material. This makes it possible to reduce separation between the die pad and the semiconductor chip resulting from cracks, due to temperature cycling, of the coupling member present between the die pad and the semiconductor chip.
    Type: Application
    Filed: August 22, 2013
    Publication date: March 6, 2014
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Kenya KAWANO, Hiroyuki NAKAMURA, Yukihiro SATO
  • Patent number: 8624379
    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: Grant
    Filed: September 12, 2012
    Date of Patent: January 7, 2014
    Assignee: Renesas Electronics Corporation
    Inventors: Hiroyuki Nakamura, Yukihiro Sato, Atsushi Fujiki, Tatsuhiro Seki
  • Patent number: 8592914
    Abstract: The electrical characteristics of a semiconductor device are enhanced. In the package of the semiconductor device, there are encapsulated first and second semiconductor chips with a power MOS-FET formed therein and a third semiconductor chip with a control circuit for controlling their operation formed therein. The bonding pads for source electrode of the first semiconductor chip on the high side are electrically connected to a die pad through a metal plate. The bonding pad for source electrode of the second semiconductor chip on the low side is electrically connected to lead wiring through a metal plate. The metal plate includes a first portion in contact with the bonding pad of the second semiconductor chip, a second portion extended from a short side of the first portion to the lead wiring, and a third portion extended from a long side of the first portion to the lead wiring.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: November 26, 2013
    Assignee: Renesas Electronics Corporation
    Inventors: Tomoaki Uno, Nobuyoshi Matsuura, Yukihiro Sato, Keiichi Okawa, Tetsuya Kawashima, Kisho Ashida
  • 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
  • Publication number: 20130256860
    Abstract: There is provided a technology enabling the improvement of the reliability of a semiconductor device manufactured by physically fixing separately formed chip mounting portion and lead frame. A feature of an embodiment resides in that, a second junction portion formed in a suspension lead is fitted into a first junction portion formed in a chip mounting portion, thereby to physically fix the chip mounting portion and the suspension lead. Specifically, the first junction portion is formed of a concave part disposed in the surface of the chip mounting portion. The second junction portion forms a part of the suspension lead.
    Type: Application
    Filed: February 20, 2013
    Publication date: October 3, 2013
    Inventors: Yukihiro Sato, Nobuya Koike
  • Publication number: 20130127032
    Abstract: To prevent, in a resin-sealed type semiconductor package, generation of cracks in a die bonding material used for mounting of a semiconductor chip. A semiconductor chip is mounted over the upper surface of a die pad via a die bonding material, followed by sealing with an insulating resin. The top surface of the die pad to be brought into contact with the insulating resin is surface-roughened, while the bottom surface of the die pad and an outer lead portion are not surface-roughened.
    Type: Application
    Filed: January 14, 2013
    Publication date: May 23, 2013
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Hiroyuki NAKAMURA, Akira MUTO, Nobuya KOIKE, Atsushi NISHIKIZAWA, Yukihiro SATO, Katsuhiko FUNATSU