Patents by Inventor Naotaka Hashimoto

Naotaka Hashimoto 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: 7323735
    Abstract: In a complete CMOS SRAM having a memory cell composed of six MISFETs formed over a substrate, a capacitor element having a stack structure is formed of a lower electrode covering the memory cell, an upper electrode, and a capacitor insulating film (dielectric film) interposed between the lower electrode and the upper electrode. One electrode (the lower electrode) of the capacitor element is connected to one storage node of a flip-flop circuit, and the other electrode (the upper electrode) is connected to the other storage node. As a result, the storage node capacitance of the memory cell of the SRAM is increased to improve the soft error resistance.
    Type: Grant
    Filed: July 5, 2005
    Date of Patent: January 29, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Naotaka Hashimoto, Yutaka Hoshino, Shuji Ikeda
  • Patent number: 7314805
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Grant
    Filed: September 13, 2006
    Date of Patent: January 1, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Patent number: 7314830
    Abstract: A Co silicide layer having a low resistance and a small junction leakage current is formed on the surface of the gate electrode, source and drain of MOSFETS by silicidizing a Co film deposited on a main plane of a wafer by sputtering using a high purity Co target having a Co purity of at least 99.99% and Fe and Ni contents of not greater than 10 ppm, preferably having a Co purity of 99.999%.
    Type: Grant
    Filed: April 6, 2007
    Date of Patent: January 1, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Shinji Nishihara, Shuji Ikeda, Naotaka Hashimoto, Hiroshi Momiji, Hiromi Abe, Shinichi Fukada, Masayuki Suzuki
  • Publication number: 20070184603
    Abstract: A Co silicide layer having a low resistance and a small junction leakage current is formed on the surface of the gate electrode, source and drain of MOSFETS by silicidizing a Co film deposited on a main plane of a wafer by sputtering using a high purity Co target having a Co purity of at least 99.99% and Fe and Ni contents of not greater than 10 ppm, preferably having a Co purity of 99.999%.
    Type: Application
    Filed: April 6, 2007
    Publication date: August 9, 2007
    Inventors: Shinji Nishihara, Shuji Ikeda, Naotaka Hashimoto, Hiroshi Momiji, Hiromi Abe, Shinichi Fukada, Masayuki Suzuki
  • Patent number: 7214577
    Abstract: A Co silicide layer having a low resistance and a small junction leakage current is formed on the surface of the gate electrode, source and drain of MOSFETs by silicidizing a Co film deposited on a main plane of a wafer by sputtering using a high purity Co target having a Co purity of at least 99.99% and Fe and Ni contents of not greater than 10 ppm, preferably having a Co purity of 99.999%.
    Type: Grant
    Filed: December 8, 2004
    Date of Patent: May 8, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Shinji Nishihara, Shuji Ikeda, Naotaka Hashimoto, Hiroshi Momiji, Hiromi Abe, Shinichi Fukada, Masayuki Suzuki
  • Patent number: 7199433
    Abstract: In a complete CMOS SRAM having a memory cell composed of six MISFETs formed over a substrate, a capacitor element having a stack structure is formed of a lower electrode covering the memory cell, an upper electrode, and a capacitor insulating film (dielectric film) interposed between the lower electrode and the upper electrode. One electrode (the lower electrode) of the capacitor element is connected to one storage node of a flip-flop circuit, and the other electrode (the upper electrode) is connected to the other storage node. As a result, the storage node capacitance of the memory cell of the SRAM is increased to improve the soft error resistance.
    Type: Grant
    Filed: January 14, 2004
    Date of Patent: April 3, 2007
    Assignee: Renesas Technology Corp.
    Inventors: Naotaka Hashimoto, Yutaka Hoshino, Shuji Ikeda
  • Publication number: 20070004163
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Application
    Filed: September 13, 2006
    Publication date: January 4, 2007
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Patent number: 7118983
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and? a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: October 10, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Patent number: 7094642
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Grant
    Filed: April 21, 2005
    Date of Patent: August 22, 2006
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Patent number: 7094655
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: August 22, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Patent number: 7074665
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Grant
    Filed: November 6, 2003
    Date of Patent: July 11, 2006
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Patent number: 7064040
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and’ a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Grant
    Filed: June 30, 2005
    Date of Patent: June 20, 2006
    Assignees: Hitachi, Ltd., Hitachi ULSI Systems Co., Ltd.
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Patent number: 7030449
    Abstract: In a complete CMOS SRAM having a memory cell composed of six MISFETs formed over a substrate, a capacitor element having a stack structure is formed of a lower electrode covering the memory cell, an upper electrode, and a capacitor insulating film (dielectric film) interposed between the lower electrode and the upper electrode. One electrode (the lower electrode) of the capacitor element is connected to one storage node of a flip-flop circuit, and the other electrode (the upper electrode) is connected to the other storage node. As a result, the storage node capacitance of the memory cell of the SRAM is increased to improve the soft error resistance.
    Type: Grant
    Filed: September 29, 2004
    Date of Patent: April 18, 2006
    Assignee: Renesas Technology Corp.
    Inventors: Naotaka Hashimoto, Yutaka Hoshino, Shuji Ikeda
  • Patent number: 6992446
    Abstract: A halogen lamp of a 12V type including: a glass part, a portion of which is a light emitting portion having a space therein and the rest of which is a sealing portion, both portions being made of quartz glass; an infrared reflective coating formed to cover an outer surface of the glass part; a filament which, supported by the sealing portion, is provided in the inner space of the light emitting portion; a molybdenum foil which is embedded in the sealing portion and is electrically connected to the filament; and a power supply line, one end of which is connected to the molybdenum foil, the other end exposed to outside. The halogen lamp satisfies 450 mm2?Sb?650 mm2 and Se??0.35Sb+520, where Sb and Se designate outer surface areas of the light emitting portion and the sealing portion, respectively.
    Type: Grant
    Filed: February 25, 2004
    Date of Patent: January 31, 2006
    Assignees: Matsushita Electric Industrial Co., Ltd., Ushio Denki Kabushiki Kaisha
    Inventors: Naotaka Hashimoto, Taku Ikeda, Ichiro Shibagaki, Ichiro Takeuchi
  • Publication number: 20050250268
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and? a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Application
    Filed: June 30, 2005
    Publication date: November 10, 2005
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Publication number: 20050250269
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Application
    Filed: June 30, 2005
    Publication date: November 10, 2005
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Publication number: 20050242405
    Abstract: In a complete CMOS SRAM having a memory cell composed of six MISFETs formed over a substrate, a capacitor element having a stack structure is formed of a lower electrode covering the memory cell, an upper electrode, and a capacitor insulating film (dielectric film) interposed between the lower electrode and the upper electrode. One electrode (the lower electrode) of the capacitor element is connected to one storage node of a flip-flop circuit, and the other electrode (the upper electrode) is connected to the other storage node. As a result, the storage node capacitance of the memory cell of the SRAM is increased to improve the soft error resistance.
    Type: Application
    Filed: July 5, 2005
    Publication date: November 3, 2005
    Inventors: Naotaka Hashimoto, Yutaka Hoshino, Shuji Ikeda
  • Publication number: 20050239258
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Application
    Filed: June 30, 2005
    Publication date: October 27, 2005
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Publication number: 20050186729
    Abstract: An implantation step of a dopant ion for forming source and drain regions (S and D) is divided into one implantation of a dopant ion for forming a p/n junction with a well region (3), and one implantation of a dopant ion that does not influence a position of the p/n junction between the source and drain regions (S and D) and the well region with a shallow implantation depth and a large implantation amount. After conducting an activation heat treatment of the dopant, a surface of the source/drain region is made into cobalt silicide 12, so that the source/drain region (S and D) can have a low resistance, and a p/n junction leakage can be reduced.
    Type: Application
    Filed: April 21, 2005
    Publication date: August 25, 2005
    Inventors: Shinichi Fukada, Naotaka Hashimoto, Masanori Kojima, Hiroshi Momiji, Hiromi Abe, Masayuki Suzuki
  • Patent number: 6911125
    Abstract: When forming an optical thin film on a surface of a bulb of a light source such as an electric lamp or a discharge lamp, a thin film whose interface/surface is less rough is formed on a base having a spheroid shape. When forming a thin film on a base 2 with a spheroid shape, which is disposed in a vacuum chamber 4 of a film-forming device and spun on its rotation axis, an interface or a surface of the thin film is made less rough and the thickness distribution of the thin film is made smaller by setting a sputtering gas pressure to be in a range from 0.04 Pa to 5.
    Type: Grant
    Filed: September 4, 2001
    Date of Patent: June 28, 2005
    Assignee: Matsushita Electric Industrial Co., Ltd.
    Inventors: Naotaka Hashimoto, Yuuji Omata