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).
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Patent number: 10371582Abstract: 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: GrantFiled: January 4, 2018Date of Patent: August 6, 2019Assignee: Renesas Electronics CorporationInventors: Shigeki Obayashi, Hiroki Shimano, Masataka Minami, Hiroji Ozaki
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Publication number: 20180128689Abstract: 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: ApplicationFiled: January 4, 2018Publication date: May 10, 2018Inventors: Shigeki OBAYASHI, Hiroki SHIMANO, Masataka MINAMI, Hiroji OZAKI
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Patent number: 9891116Abstract: 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: GrantFiled: August 14, 2014Date of Patent: February 13, 2018Assignee: RENESAS ELECTRONICS CORPORATIONInventors: Shigeki Obayashi, Hiroki Shimano, Masataka Minami, Hiroji Ozaki
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Publication number: 20150063419Abstract: 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: ApplicationFiled: August 14, 2014Publication date: March 5, 2015Inventors: Shigeki OBAYASHI, Hiroki SHIMANO, Masataka MINAMI, Hiroji OZAKI
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Publication number: 20110175231Abstract: 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: ApplicationFiled: March 30, 2011Publication date: July 21, 2011Applicant: RENESAS ELECTRONICS CORPORATIONInventors: Tsutomu OKAZAKI, Motoi ASHIDA, Hiroji OZAKI, Tsuyoshi KOGA, Daisuke OKADA
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Patent number: 7939448Abstract: 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: GrantFiled: September 23, 2010Date of Patent: May 10, 2011Assignee: Renesas Electronics CorporationInventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
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Publication number: 20110014783Abstract: 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: ApplicationFiled: September 23, 2010Publication date: January 20, 2011Applicant: Renesas Electronics CorporationInventors: Tsutomu OKAZAKI, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
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Patent number: 7816207Abstract: 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: GrantFiled: March 8, 2010Date of Patent: October 19, 2010Assignee: Renesas Technology Corp.Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
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Publication number: 20100159687Abstract: 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: ApplicationFiled: March 8, 2010Publication date: June 24, 2010Applicant: Renesas Technology Corp.Inventors: Tsutomu OKAZAKI, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
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Patent number: 7709874Abstract: 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: GrantFiled: January 4, 2007Date of Patent: May 4, 2010Assignee: Renesas Technology Corp.Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
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Publication number: 20070164342Abstract: 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: ApplicationFiled: January 11, 2007Publication date: July 19, 2007Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada, Masamichi Matsuoka
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Publication number: 20070155153Abstract: 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: ApplicationFiled: January 4, 2007Publication date: July 5, 2007Inventors: Tsutomu Okazaki, Motoi Ashida, Hiroji Ozaki, Tsuyoshi Koga, Daisuke Okada
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Patent number: 6615097Abstract: 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: GrantFiled: January 19, 2001Date of Patent: September 2, 2003Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroji Ozaki
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Publication number: 20020032495Abstract: 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: ApplicationFiled: January 19, 2001Publication date: March 14, 2002Applicant: Mitsubishi Denki Kabushiki KaishaInventor: Hiroji Ozaki
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Patent number: 6319733Abstract: 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: GrantFiled: September 14, 1999Date of Patent: November 20, 2001Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroji Ozaki
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Patent number: 6128403Abstract: 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: GrantFiled: February 19, 1998Date of Patent: October 3, 2000Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroji Ozaki
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Patent number: 5940300Abstract: 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: GrantFiled: May 8, 1997Date of Patent: August 17, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventor: Hiroji Ozaki
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Patent number: 5930614Abstract: 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: GrantFiled: September 26, 1991Date of Patent: July 27, 1999Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Takahisa Eimori, Shinichi Satoh, Wataru Wakamiya, Hiroji Ozaki, Yoshinori Tanaka
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Patent number: 5834817Abstract: 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: GrantFiled: December 1, 1992Date of Patent: November 10, 1998Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shinichi Satoh, Hiroji Ozaki, Takahisa Eimori
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Patent number: 5650342Abstract: 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: GrantFiled: October 30, 1992Date of Patent: July 22, 1997Assignee: Mitsubishi Denki Kabushiki KaishaInventors: Shinichi Satoh, Hiroji Ozaki, Takahisa Eimori