Patents by Inventor Hiroji Ozaki

Hiroji Ozaki 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: 10371582
    Abstract: To provide a signal generation circuit having a short settling time of an output voltage. In a PTAT signal generation circuit, a trimming circuit is coupled between the cathodes of 0-th to K-th diodes and a line of a ground voltage, the anode of the 0-th diode is coupled to a first node, the anodes of the first to the K-th diodes are coupled to a second node via a resistive element, the first node and the second node are set to the same voltage, a first current flowing through the 0-th diode and a second current flowing through the first to the K-th diodes are set to have the same value, and a third current flowing through the trimming circuit is set to have the value 2 times that of each of the first current and the second current.
    Type: Grant
    Filed: January 4, 2018
    Date of Patent: August 6, 2019
    Assignee: Renesas Electronics Corporation
    Inventors: Shigeki Obayashi, Hiroki Shimano, Masataka Minami, Hiroji Ozaki
  • Publication number: 20180128689
    Abstract: To provide a signal generation circuit having a short settling time of an output voltage. In a PTAT signal generation circuit, a trimming circuit is coupled between the cathodes of 0-th to K-th diodes and a line of a ground voltage, the anode of the 0-th diode is coupled to a first node, the anodes of the first to the K-th diodes are coupled to a second node via a resistive element, the first node and the second node are set to the same voltage, a first current flowing through the 0-th diode and a second current flowing through the first to the K-th diodes are set to have the same value, and a third current flowing through the trimming circuit is set to have the value 2 times that of each of the first current and the second current.
    Type: Application
    Filed: January 4, 2018
    Publication date: May 10, 2018
    Inventors: Shigeki OBAYASHI, Hiroki SHIMANO, Masataka MINAMI, Hiroji OZAKI
  • Patent number: 9891116
    Abstract: To provide a signal generation circuit having a short settling time of an output voltage. In a PTAT signal generation circuit, a trimming circuit is coupled between the cathodes of 0-th to K-th diodes and a line of a ground voltage, the anode of the 0-th diode is coupled to a first node, the anodes of the first to the K-th diodes are coupled to a second node via a resistive element, the first node and the second node are set to the same voltage, a first current flowing through the 0-th diode and a second current flowing through the first to the K-th diodes are set to have the same value, and a third current flowing through the trimming circuit is set to have the value 2 times that of each of the first current and the second current.
    Type: Grant
    Filed: August 14, 2014
    Date of Patent: February 13, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventors: Shigeki Obayashi, Hiroki Shimano, Masataka Minami, Hiroji Ozaki
  • Publication number: 20150063419
    Abstract: To provide a signal generation circuit having a short settling time of an output voltage. In a PTAT signal generation circuit, a trimming circuit is coupled between the cathodes of 0-th to K-th diodes and a line of a ground voltage, the anode of the 0-th diode is coupled to a first node, the anodes of the first to the K-th diodes are coupled to a second node via a resistive element, the first node and the second node are set to the same voltage, a first current flowing through the 0-th diode and a second current flowing through the first to the K-th diodes are set to have the same value, and a third current flowing through the trimming circuit is set to have the value 2 times that of each of the first current and the second current.
    Type: Application
    Filed: August 14, 2014
    Publication date: March 5, 2015
    Inventors: Shigeki OBAYASHI, Hiroki SHIMANO, Masataka MINAMI, Hiroji OZAKI
  • Publication number: 20110175231
    Abstract: A manufacturing method of a semiconductor device includes a first electrode formation step of forming a control gate electrode above a surface of a semiconductor substrate with a control gate insulating film interposed between the control gate electrode and the semiconductor substrate, a step of forming a storage node insulating film on the surface of the semiconductor substrate, and a second electrode formation step of forming a memory gate electrode on a surface of the storage node insulating film. The second electrode formation step includes a step of forming a memory gate electrode layer on the surface of the storage node insulating film, a step of forming an auxiliary film, having an etching rate slower than that of the memory gate electrode layer, on a surface of the memory gate electrode layer, and a step of performing anisotropic etching on the memory gate electrode layer and the auxiliary film.
    Type: Application
    Filed: March 30, 2011
    Publication date: July 21, 2011
    Applicant: RENESAS ELECTRONICS CORPORATION
    Inventors: Tsutomu OKAZAKI, Motoi ASHIDA, Hiroji OZAKI, Tsuyoshi KOGA, Daisuke OKADA
  • Patent number: 7939448
    Abstract: A manufacturing method of a semiconductor device includes a first electrode formation step of forming a control gate electrode above a surface of a semiconductor substrate with a control gate insulating film interposed between the control gate electrode and the semiconductor substrate, a step of forming a storage node insulating film on the surface of the semiconductor substrate, and a second electrode formation step of forming a memory gate electrode on a surface of the storage node insulating film. The second electrode formation step includes a step of forming a memory gate electrode layer on the surface of the storage node insulating film, a step of forming an auxiliary film, having an etching rate slower than that of the memory gate electrode layer, on a surface of the memory gate electrode layer, and a step of performing anisotropic etching on the memory gate electrode layer and the auxiliary film.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: May 10, 2011
    Assignee: Renesas Electronics Corporation
    Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
  • Publication number: 20110014783
    Abstract: A manufacturing method of a semiconductor device includes a first electrode formation step of forming a control gate electrode above a surface of a semiconductor substrate with a control gate insulating film interposed between the control gate electrode and the semiconductor substrate, a step of forming a storage node insulating film on the surface of the semiconductor substrate, and a second electrode formation step of forming a memory gate electrode on a surface of the storage node insulating film. The second electrode formation step includes a step of forming a memory gate electrode layer on the surface of the storage node insulating film, a step of forming an auxiliary film, having an etching rate slower than that of the memory gate electrode layer, on a surface of the memory gate electrode layer, and a step of performing anisotropic etching on the memory gate electrode layer and the auxiliary film.
    Type: Application
    Filed: September 23, 2010
    Publication date: January 20, 2011
    Applicant: Renesas Electronics Corporation
    Inventors: Tsutomu OKAZAKI, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
  • Patent number: 7816207
    Abstract: A manufacturing method of a semiconductor device includes a first electrode formation step of forming a control gate electrode above a surface of a semiconductor substrate with a control gate insulating film interposed between the control gate electrode and the semiconductor substrate, a step of forming a storage node insulating film on the surface of the semiconductor substrate, and a second electrode formation step of forming a memory gate electrode on a surface of the storage node insulating film. The second electrode formation step includes a step of forming a memory gate electrode layer on the surface of the storage node insulating film, a step of forming an auxiliary film, having an etching rate slower than that of the memory gate electrode layer, on a surface of the memory gate electrode layer, and a step of performing anisotropic etching on the memory gate electrode layer and the auxiliary film.
    Type: Grant
    Filed: March 8, 2010
    Date of Patent: October 19, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
  • Publication number: 20100159687
    Abstract: A manufacturing method of a semiconductor device includes a first electrode formation step of forming a control gate electrode above a surface of a semiconductor substrate with a control gate insulating film interposed between the control gate electrode and the semiconductor substrate, a step of forming a storage node insulating film on the surface of the semiconductor substrate, and a second electrode formation step of forming a memory gate electrode on a surface of the storage node insulating film. The second electrode formation step includes a step of forming a memory gate electrode layer on the surface of the storage node insulating film, a step of forming an auxiliary film, having an etching rate slower than that of the memory gate electrode layer, on a surface of the memory gate electrode layer, and a step of performing anisotropic etching on the memory gate electrode layer and the auxiliary film.
    Type: Application
    Filed: March 8, 2010
    Publication date: June 24, 2010
    Applicant: Renesas Technology Corp.
    Inventors: Tsutomu OKAZAKI, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
  • Patent number: 7709874
    Abstract: A manufacturing method of a semiconductor device includes a first electrode formation step of forming a control gate electrode above a surface of a semiconductor substrate with a control gate insulating film interposed between the control gate electrode and the semiconductor substrate, a step of forming a storage node insulating film on the surface of the semiconductor substrate, and a second electrode formation step of forming a memory gate electrode on a surface of the storage node insulating film. The second electrode formation step includes a step of forming a memory gate electrode layer on the surface of the storage node insulating film, a step of forming an auxiliary film, having an etching rate slower than that of the memory gate electrode layer, on a surface of the memory gate electrode layer, and a step of performing anisotropic etching on the memory gate electrode layer and the auxiliary film.
    Type: Grant
    Filed: January 4, 2007
    Date of Patent: May 4, 2010
    Assignee: Renesas Technology Corp.
    Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
  • Publication number: 20070164342
    Abstract: A polysilicon film forming a memory gate interconnection and the like includes a part extending from a part positioned on one side surface of a control gate interconnection to a side opposite to a side where the control gate interconnection is positioned, and that part serves as a pad portion. A contact hole is formed to expose the pad portion. The height of a part of the polysilicon film that is positioned on one side surface of the control gate interconnection is set equal to or lower than the height of the control gate interconnection so that the polysilicon film forming a memory gate interconnection and the like does not two-dimensionally overlap the control gate interconnection. Therefore, a semiconductor memory device with increased process margin can be obtained.
    Type: Application
    Filed: January 11, 2007
    Publication date: July 19, 2007
    Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada, Masamichi Matsuoka
  • Publication number: 20070155153
    Abstract: A manufacturing method of a semiconductor device includes a first electrode formation step of forming a control gate electrode above a surface of a semiconductor substrate with a control gate insulating film interposed between the control gate electrode and the semiconductor substrate, a step of forming a storage node insulating film on the surface of the semiconductor substrate, and a second electrode formation step of forming a memory gate electrode on a surface of the storage node insulating film. The second electrode formation step includes a step of forming a memory gate electrode layer on the surface of the storage node insulating film, a step of forming an auxiliary film, having an etching rate slower than that of the memory gate electrode layer, on a surface of the memory gate electrode layer, and a step of performing anisotropic etching on the memory gate electrode layer and the auxiliary film.
    Type: Application
    Filed: January 4, 2007
    Publication date: July 5, 2007
    Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
  • Patent number: 6615097
    Abstract: A production management system has a plurality of pieces of production apparatus, a production controller connected online to the production apparatus, and a simulator. The simulator performs a simulation of physical distribution for a specified period of time through use of a simulation parameter, apparatus information, and process information, which are acquired from the production controller. A re-simulation of physical distribution is performed while taking, as parameters for optimizing physical distribution, time-series data pertaining to the availability factor of each apparatus and the load factor of each apparatus obtained as a result of the simulation, as well as the start and termination times of an event which is to arise in the period of a simulation. A dispatch rule set for each apparatus or a group of pieces of apparatus having a single function is dynamically changed, thus feeding back the change to control of real physical distribution.
    Type: Grant
    Filed: January 19, 2001
    Date of Patent: September 2, 2003
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroji Ozaki
  • Publication number: 20020032495
    Abstract: A production management system has a plurality of pieces of production apparatus, a production controller connected online to the production apparatus, and a simulator. The simulator performs a simulation of physical distribution for a specified period of time through use of a simulation parameter, apparatus information, and process information, which are acquired from the production controller. A re-simulation of physical distribution is performed while taking, as parameters for optimizing physical distribution, time-series data pertaining to the availability factor of each apparatus and the load factor of each apparatus obtained as a result of the simulation, as well as the start and termination times of an event which is to arise in the period of a simulation. A dispatch rule set for each apparatus or a group of pieces of apparatus having a single function is dynamically changed, thus feeding back the change to control of real physical distribution.
    Type: Application
    Filed: January 19, 2001
    Publication date: March 14, 2002
    Applicant: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroji Ozaki
  • Patent number: 6319733
    Abstract: A manufacturing system compares information of foreign matter sensed by semiconductor equipment from on a semiconductor substrate with a selection reference thereby selecting optimum semiconductor equipment corresponding to the information of the foreign matter from a plurality of semiconductor equipment and processing the semiconductor substrate. Thus, a method of manufacturing a semiconductor device capable of improving the yield of the semiconductor device as well as a manufacturing system and semiconductor equipment to which the manufacturing method is applied, and a semiconductor device manufactured by the same are obtained.
    Type: Grant
    Filed: September 14, 1999
    Date of Patent: November 20, 2001
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroji Ozaki
  • Patent number: 6128403
    Abstract: In order to solve various problems of a wafer, two-dimensional analysis using a wafer map is aided. An image of the wafer map is classified and displayed on a screen for each item such as a manufacturing step, a device and inspection. A trend chart is also attached in addition to the image of the wafer map.
    Type: Grant
    Filed: February 19, 1998
    Date of Patent: October 3, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroji Ozaki
  • Patent number: 5940300
    Abstract: Measurement result data obtained by the devices (A1 to A8) are stored in databases (C1 to C8). Every time new data are entered in any of the databases (C1 to C8), a database monitoring computer (E1) retrieves data related to the entered data from the data stored in the databases (C1 to C8) and stores the retrieved data in a failure analysis database (D3). A data analysis system (D0) gives a readout from the failure analysis database (D3) to an operator. The operator can thereby judge that some nonconforming defect is found and what the cause of nonconforming defect is even while the product wafer is on a fabrication line, to make a prompt remedy against the cause of nonconforming defect. Thus, a method and an apparatus for analyzing a fabrication line can be provided, allowing a prompt remedy against the cause of nonconforming defect.
    Type: Grant
    Filed: May 8, 1997
    Date of Patent: August 17, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventor: Hiroji Ozaki
  • Patent number: 5930614
    Abstract: A first conductor for a field shield and a first insulating film are sequentially formed in a predetermined shape on a major surface of a P-type semiconductor substrate through an insulating film. A third insulating film is formed over the semiconductor substrate so as to cover the first conductor and a second insulating film thereon. The third insulating film is anisotropically etched, so that a sidewall insulating film is formed on sidewalls of the first conductor. Second and third conductors respectively serving as gate electrodes of field effect transistors are formed through a fourth insulating film. n-type impurities are implanted into the major surface of the semiconductor substrate utilizing as masks the first insulating film, the sidewall oxide film, the second conductor and the third conductor and are diffused, to form impurity regions.
    Type: Grant
    Filed: September 26, 1991
    Date of Patent: July 27, 1999
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Takahisa Eimori, Shinichi Satoh, Wataru Wakamiya, Hiroji Ozaki, Yoshinori Tanaka
  • Patent number: 5834817
    Abstract: A field effect transistor comprises a semiconductor substrate having a main surface and a predetermined impurity concentration of a first conductivity type, impurity layers of a second conductivity type formed spaced apart at the main surface of the semiconductor substrate, and a shaped conductive layer serving as a gate electrode. The impurity layers constitute source.multidot.drain regions, and a region between the impurity layers defines a channel region in the main surface. The shaped conductive layer is formed on the channel region with an insulating film therebetween. The shaped conductive layer has an upper portion and a lower portion wherein the upper portion is longer than the lower portion and the length of the lower portion adjacent the insulating film is substantially equal to or shorter than the length of the channel region at the main surface. Additionally, the upper and lower portions of the shaped conductive layer are formed of the same base composition.
    Type: Grant
    Filed: December 1, 1992
    Date of Patent: November 10, 1998
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shinichi Satoh, Hiroji Ozaki, Takahisa Eimori
  • Patent number: 5650342
    Abstract: A field effect transistor comprises a semiconductor substrate having a main surface and a predetermined impurity concentration of a first conductivity type, impurity layers of a second conductivity type formed spaced apart at the main surface of the semiconductor substrate, and a shaped conductive layer serving as a gate electrode. The impurity layers constitute source.drain regions, and a region between the impurity layers defines a channel region in the main surface. The shaped conductive layer is formed on the channel region with an insulating film therebetween. The shaped conductive layer has an upper portion and a lower portion wherein the upper portion is longer than the lower portion and the length of the lower portion adjacent the insulating film is substantially equal to or shorter than the length of the channel region at the main surface. Additionally, the upper and lower portions of the shaped conductive layer are formed of the same base composition.
    Type: Grant
    Filed: October 30, 1992
    Date of Patent: July 22, 1997
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Shinichi Satoh, Hiroji Ozaki, Takahisa Eimori