Patents by Inventor Tomohiko Tsutsumi

Tomohiko Tsutsumi 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).

  • Publication number: 20060177978
    Abstract: A silicon oxide film as an insulating film is accumulated so as to cover a whole surface of a silicon substrate including a surface of a resistance element by, for example, a thermal CVD method, just after a resist pattern is removed. This silicon oxide film is processed to form a silicide block on the resistance element, and side wall spacers at both side surfaces of gate electrodes, and so on, of respective transistors, at the same time.
    Type: Application
    Filed: May 31, 2005
    Publication date: August 10, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Tomohiko Tsutsumi, Taiji Ema, Hideyuki Kojima, Toru Anezaki
  • Publication number: 20060038240
    Abstract: An n-type embedded layer is formed in an N-LV region of a SRAM cell region after an element isolation insulating film is formed on a p-type Si substrate. Thereafter, a p-well and an n-well are formed. In formation of a channel-doped layer, ion implantation is also performed into the N-LV region of the SRAM cell region in parallel with ion implantation into an N-LV of a logic circuit region. Ion-implantation is further performed into the N-LV region of the SRAM cell region in parallel with ion implantation into an N-MV of an I/O region.
    Type: Application
    Filed: December 27, 2004
    Publication date: February 23, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Tomohiko Tsutsumi, Toru Anezaki, Hideyuki Kojima, Taiji Ema
  • Publication number: 20060017181
    Abstract: A semiconductor device includes a first CMOS inverter, a second CMOS inverter, a first transfer transistor and a second transfer transistor wherein the first and second transfer transistors are formed respectively in first and second device regions defined on a semiconductor device by a device isolation region so as to extend in parallel with each other, the first transfer transistor contacting with a first bit line at a first bit contact region on the first device region, the second transfer transistor contacting with a second bit line at a second bit contact region on the second device region, wherein the first bit contact region is formed in the first device region such that a center of said the bit contact region is offset toward the second device region, and wherein the second bit contact region is formed in the second device region such that a center of the second bit contact region is offset toward the first device region.
    Type: Application
    Filed: November 16, 2004
    Publication date: January 26, 2006
    Applicant: FUJITSU LIMITED
    Inventors: Toru Anezaki, Tomohiko Tsutsumi, Tatsuji Araya, Hideyuki Kojima, Taiji Ema
  • Patent number: 6921693
    Abstract: A semiconductor device comprising: a first insulation film 60 formed above a base substrate 10; a second insulation film 61 formed on the first insulation film and having different etching characteristics from the first insulation film; and a capacitor 79 including a storage electrode 68 formed on the second insulation film, projected therefrom, the storage electrode being formed, extended downward from side surfaces of the second insulation film. The lower ends of the storage electrodes are formed partially below the etching stopper film, whereby the storage electrodes are fixed by the etching stopper film. Accordingly, the storage electrodes are prevented from peeling off in processing, such as wet etching, etc. The semiconductor device can be fabricated at high yields.
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: July 26, 2005
    Assignee: Fujitsu Limited
    Inventors: Osamu Tsuboi, Tomohiko Tsutsumi, Kazutaka Yoshizawa
  • Publication number: 20050158962
    Abstract: A semiconductor device comprising: a first insulation film 60 formed above a base substrate 10; a second insulation film 61 formed on the first insulation film and having different etching characteristics from the first insulation film; and a capacitor 79 including a storage electrode 68 formed on the second insulation film, projected therefrom, the storage electrode being formed, extended downward from side surfaces of the second insulation film. The lower ends of the storage electrodes are formed partially below the etching stopper film, whereby the storage electrodes are fixed by the etching stopper film. Accordingly, the storage electrodes are prevented from peeling off in processing, such as wet etching, etc. The semiconductor device can be fabricated at high yields.
    Type: Application
    Filed: March 14, 2005
    Publication date: July 21, 2005
    Applicant: FUJITSU LIMITED
    Inventors: Osamu Tsuboi, Tomohiko Tsutsumi, Kazutaka Yoshizawa
  • Publication number: 20020167039
    Abstract: A semiconductor device comprising: a first insulation film 60 formed above a base substrate 10; a second insulation film 61 formed on the first insulation film and having different etching characteristics from the first insulation film; and a capacitor 79 including a storage electrode 68 formed on the second insulation film, projected therefrom, the storage electrode being formed, extended downward from side surfaces of the second insulation film. The lower ends of the storage electrodes are formed partially below the etching stopper film, whereby the storage electrodes are fixed by the etching stopper film. Accordingly, the storage electrodes are prevented from peeling off in processing, such as wet etching, etc. The semiconductor device can be fabricated at high yields.
    Type: Application
    Filed: June 26, 2002
    Publication date: November 14, 2002
    Applicant: Fujitsu Limited
    Inventors: Osamu Tsuboi, Tomohiko Tsutsumi, Kazutaka Yoshizawa
  • Patent number: 6459112
    Abstract: A semiconductor device comprising: a first insulation film 60 formed above a base substrate 10; a second insulation film 61 formed on the first insulation film and having different etching characteristics from the first insulation film; and a capacitor 79 including a storage electrode 68 formed on the second insulation film, projected therefrom, the storage electrode being formed, extended downward from side surfaces of the second insulation film. The lower ends of the storage electrodes are formed partially below the etching stopper film, whereby the storage electrodes are fixed by the etching stopper film. Accordingly, the storage electrodes are prevented from peeling off in processing, such as wet etching, etc. The semiconductor device can be fabricated at high yields.
    Type: Grant
    Filed: January 20, 2000
    Date of Patent: October 1, 2002
    Assignee: Fujitsu Limited
    Inventors: Osamu Tsuboi, Tomohiko Tsutsumi, Kazutaka Yoshizawa