Patents by Inventor Hidekazu Egawa

Hidekazu Egawa 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: 9443573
    Abstract: A semiconductor device includes a plurality of main amplifiers provided between memory cell arrays. One of the main amplifiers is disposed closer to one of the memory cell arrays than to the other of memory cell arrays, and the other of the main amplifiers is disposed closer to the other of the memory cell arrays than to the one of the memory cell arrays. Additional apparatus are disclosed.
    Type: Grant
    Filed: October 1, 2014
    Date of Patent: September 13, 2016
    Assignee: Micron Technology, Inc.
    Inventor: Hidekazu Egawa
  • Publication number: 20150055393
    Abstract: Disclosed herein is a device that includes a multi-level wiring structure including a first wiring layer and a second wiring layer formed over the first wiring layer; a memory cell array area including a plurality of memory cells, a plurality of sense amplifiers and a plurality of sub amplifiers; a main amplifier area including a plurality of main amplifiers, the memory cell array area and the main amplifier area being arranged in line in a first direction; and a plurality of first I/O lines each connecting an associated one of the sub amplifiers to an associated one of the main amplifiers, each of the first I/O lines including first and second wiring portions that are elongated in the first direction, the first wiring portion being formed as the first wiring layer and the second wiring portion being formed as the second wiring layer.
    Type: Application
    Filed: October 6, 2014
    Publication date: February 26, 2015
    Inventor: Hidekazu Egawa
  • Patent number: 8879297
    Abstract: Disclosed herein is a device that includes a multi-level wiring structure including a first wiring layer and a second wiring layer formed over the first wiring layer; a memory cell array area including a plurality of memory cells, a plurality of sense amplifiers and a plurality of sub amplifiers; a main amplifier area including a plurality of main amplifiers, the memory cell array area and the main amplifier area being arranged in line in a first direction; and a plurality of first I/O lines each connecting an associated one of the sub amplifiers to an associated one of the main amplifiers, each of the first I/O lines including first and second wiring portions that are elongated in the first direction, the first wiring portion being formed as the first wiring layer and the second wiring portion being formed as the second wiring layer.
    Type: Grant
    Filed: December 20, 2012
    Date of Patent: November 4, 2014
    Assignee: PS4 Luxco S.a.r.l.
    Inventor: Hidekazu Egawa
  • Patent number: 8451676
    Abstract: A semiconductor device may include, but is not limited to, a first signal line, a second signal line, and a first shield line. The first signal line is supplied with a first signal. The first signal is smaller in amplitude than a potential difference between a power potential and a reference potential. The second signal line is disposed in a first side of the first signal line. The second signal line is supplied with a second signal. The second signal is smaller in amplitude than the potential difference. The first shield line is disposed in a second side of the first signal line. The second side is opposite to the first side. The first shield line reduces a coupling noise that is applied to the first shield line from the second side.
    Type: Grant
    Filed: October 26, 2009
    Date of Patent: May 28, 2013
    Assignee: Elpida Memory, Inc.
    Inventor: Hidekazu Egawa
  • Publication number: 20110065249
    Abstract: A method of manufacturing a semiconductor device includes: performing, in a case of manufacturing a first semiconductor device which operates by a first power supply voltage, at least one step from among channel ion implantation, gate oxide film formation, and gate electrode patterning according to a process of forming an element which operates with the first power supply voltage; performing, in a case of manufacturing a second semiconductor device which operates by a second power supply voltage, at least one step from among the channel ion implantation, the gate oxide film formation, and the gate electrode patterning according to a process of forming an element which operates with the second power supply voltage; and commonly performing at least diffusion region formation in the case of manufacturing the first semiconductor device and in the case of manufacturing the second semiconductor device.
    Type: Application
    Filed: July 7, 2010
    Publication date: March 17, 2011
    Applicant: Elpida Memory, Inc.
    Inventor: Hidekazu Egawa
  • Patent number: 7710142
    Abstract: A semiconductor integrated circuit includes power supply pads of two or more kinds, switches each of which is connected between adjacent two of the power supply pads to allow short-circuiting them, and at least one control line connected to control terminals of the switches according to the kinds of the power supply pads connected to the switches.
    Type: Grant
    Filed: November 25, 2008
    Date of Patent: May 4, 2010
    Assignee: Elpida Memory, Inc.
    Inventors: Ryo Hirano, Yukihide Suzuki, Hidekazu Egawa
  • Publication number: 20100103757
    Abstract: A semiconductor device may include, but is not limited to, a first signal line, a second signal line, and a first shield line. The first signal line is supplied with a first signal. The first signal is smaller in amplitude than a potential difference between a power potential and a reference potential. The second signal line is disposed in a first side of the first signal line. The second signal line is supplied with a second signal. The second signal is smaller in amplitude than the potential difference. The first shield line is disposed in a second side of the first signal line. The second side is opposite to the first side. The first shield line reduces a coupling noise that is applied to the first shield line from the second side.
    Type: Application
    Filed: October 26, 2009
    Publication date: April 29, 2010
    Inventor: Hidekazu EGAWA
  • Publication number: 20090134892
    Abstract: A semiconductor integrated circuit includes power supply pads of two or more kinds, switches each of which is connected between adjacent two of the power supply pads to allow short-circuiting them, and at least one control line connected to control terminals of the switches according to the kinds of the power supply pads connected to the switches.
    Type: Application
    Filed: November 25, 2008
    Publication date: May 28, 2009
    Applicant: Elpida Memory, Inc.
    Inventors: Ryo HIRANO, Yukihide SUZUKI, Hidekazu EGAWA
  • Patent number: 6707139
    Abstract: A plurality of unit areas having one to a plurality of MOSFETs for implementing specific logic circuits are placed in a first direction. A first interconnection extending in the first direction is formed over each unit area. A second interconnection extending in the first direction is formed along the plurality of unit areas and outside the unit areas. Wiring dedicated areas provided with a third interconnection extending in a second direction intersecting the first direction are respectively provided between the adjacent unit areas. A logic circuit formed in each unit area has both a first connection form connected to the first interconnection and a second connection form connected to the third interconnection, via the second interconnection, according to combinations with the wiring dedicated areas adjacent thereto, as needed.
    Type: Grant
    Filed: August 14, 2001
    Date of Patent: March 16, 2004
    Assignees: Hitachi, Ltd., Hitachi, ULSI Systems Co., LTD
    Inventors: Isamu Fujii, Kiyoshi Nakai, Yukihide Suzuki, Sadayuki Morita, Hidekazu Egawa, Katura Abe, Noriaki Sakamoto
  • Patent number: 6518835
    Abstract: In a semiconductor integrated circuit device which comprises a first interconnect channel including a plurality of second-layer metal interconnect layers extended in a first direction over a semiconductor chip, a second interconnect channel including a plurality of, third-layer metal interconnect layers extended in a second direction perpendicular to the first direction, an internal power supply circuit which receives a source voltage supplied from an external terminal and generates a voltage different from the source voltage, and which is provided with stabilizing capacitors, a large part of the stabilizing capacitors are formed in an area in which the second- and third-layer metal interconnect lines intersect each other.
    Type: Grant
    Filed: May 13, 2002
    Date of Patent: February 11, 2003
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co. Ltd.
    Inventors: Yoshiro Riho, Kiyoshi Nakai, Hidekazu Egawa, Yukihide Suzuki, Isamu Fujii
  • Publication number: 20020130714
    Abstract: In a semiconductor integrated circuit device which comprises a first interconnect channel including a plurality of second-layer metal interconnect layers extended in a first direction over a semiconductor chip, a second interconnect channel including a plurality of third-layer metal interconnect layers extended in a second direction perpendicular to the first direction, an internal power supply circuit which receives a source voltage supplied from an external terminal and generates a voltage different from the source voltage, and which is provided with stabilizing capacitors, a large part of the stabilizing capacitors are occupied by capacitors formed in an area in which the second- and third-layer metal interconnect lines intersect each other.
    Type: Application
    Filed: May 13, 2002
    Publication date: September 19, 2002
    Inventors: Yoshiro Riho, Kiyoshi Nakai, Hidekazu Egawa, Yukihide Suzuki, Isamu Fujii
  • Patent number: 6411160
    Abstract: In a semiconductor integrated circuit device which comprises a first interconnect channel including a plurality of second-layer metal interconnect layers extended in a first direction over a semiconductor chip, a second interconnect channel including a plurality of third-layer metal interconnect layers extended in a second direction perpendicular to the first direction, an internal power supply circuit which receives a source voltage supplied from an external terminal and generates a voltage different from the source voltage, and which is provided with stabilizing capacitors, a large part of the stabilizing capacitors are in an area in which the second- and third-layer metal interconnect lines intersect each other.
    Type: Grant
    Filed: August 18, 1999
    Date of Patent: June 25, 2002
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Yoshiro Riho, Kiyoshi Nakai, Hidekazu Egawa, Yukihide Suzuki, Isamu Fujii
  • Publication number: 20020030212
    Abstract: A plurality of unit areas having one to a plurality of MOSFETs for implementing specific logic circuits are placed in a first direction. A first interconnection extending in the first direction is formed over each unit area. A second interconnection extending in the first direction is formed along the plurality of unit areas and outside the unit areas. Wiring dedicated areas provided with a third interconnection extending in a second direction intersecting the first direction are respectively provided between the adjacent unit areas. A logic circuit formed in each unit area has both a first connection form connected to the first interconnection and a second connection form connected to the third interconnection, via the second interconnection, according to combinations with the wiring dedicated areas adjacent thereto, as needed.
    Type: Application
    Filed: August 14, 2001
    Publication date: March 14, 2002
    Inventors: Isamu Fujii, Kiyoshi Nakai, Yukihide Suzuki, Sadayuki Morita, Hidekazu Egawa, Katura Abe, Noriaki Sakamoto
  • Patent number: 6274895
    Abstract: A plurality of unit areas having one to a plurality of MOSFETs for implementing specific logic circuits are placed in a first direction. A first interconnection extending in the first direction is formed over each unit area. A second interconnection extending in the first direction is formed along the plurality of unit areas and outside the unit areas. Wiring dedicated areas provided with a third interconnection extending in a second direction intersecting the first direction are respectively provided between the adjacent unit areas. A logic circuit formed in each unit area has both a first connection form connected to the first interconnection and a second connection form connected to the third interconnection via the second interconnection according to combinations with the wiring dedicated areas adjacent thereto as needed.
    Type: Grant
    Filed: August 27, 1999
    Date of Patent: August 14, 2001
    Assignees: Hitachi, LTD, Hitachi ULSI Systems Co., LTD
    Inventors: Isamu Fujii, Kiyoshi Nakai, Yukihide Suzuki, Sadayuki Morita, Hidekazu Egawa, Katura Abe, Noriaki Sakamoto