Patents by Inventor Shigenobu Maeda

Shigenobu Maeda 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: 20080211022
    Abstract: In a semiconductor capable of reducing NBTI and a method for manufacturing the same, a multi-gate transistor includes an active region, gate dielectric, channels in the active region, and gate electrodes, and is formed on a semiconductor wafer. The active region has a top and side surfaces, and is oriented in a first direction. The gate dielectric is formed on the top and side surfaces of the active region. The channels are formed in the top and side surfaces of the active region. The gate electrodes are formed on the gate dielectric corresponding to the channels and aligned perpendicular to the active region such that current flows in the first direction. In one aspect of the invention, an SOI layer having a second orientation indicator in a second direction is formed on a supporting substrate having a first orientation indicator in a first direction. A multi-gate transistor is formed on the SOI layer.
    Type: Application
    Filed: January 9, 2008
    Publication date: September 4, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Shigenobu Maeda, Jeong Hwan Yang, Junga Choi
  • Publication number: 20080216041
    Abstract: Provided is an integrated circuit (IC) simulation method which can predict the operation and performance of an IC considering stress effects that affect the characteristics of unit devices included in the IC. The method includes drawing out a first net list of unit devices included in a designed IC; preparing a layout of the designed IC; extracting a stress parameter from the layout of the designed IC; and drawing out a second net list of the first net list and the stress parameter.
    Type: Application
    Filed: January 25, 2008
    Publication date: September 4, 2008
    Inventors: Quan Wangxiao, Shigenobu Maeda
  • Publication number: 20080150076
    Abstract: Provided are an electrical fuse, a semiconductor device having the same, and a method of programming and reading the electrical fuse. The electrical fuse includes first and second anodes disposed apart from each other. A cathode is interposed between the first and second anodes. A first fuse link couples the first anode to the cathode, and a second fuse link couples the second anode to the cathode.
    Type: Application
    Filed: December 6, 2007
    Publication date: June 26, 2008
    Inventors: Myung-Hee Nam, Shigenobu Maeda, Jae-Ho Lee
  • Patent number: 7391292
    Abstract: An on-chip inductor includes a main inductor portion configured to provide a main magnetic field of an on-chip inductor. An interconnect inductor portion is electrically coupled to the main inductor portion and is configured to provide an interconnect magnetic field that constructively combines with the main magnetic field.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: June 24, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shigenobu Maeda, Jeong-hwan Yang
  • Publication number: 20080117011
    Abstract: An on-chip inductor can include an outer inductor portion that separates an inner region of the inductor from an outer region of the inductor outside the inductor. An interconnect inductor portion is electrically coupled to the main inductor portion wherein the interconnect inductor portion can include extension portions that follow the contour of the adjacent portions of the outer inductor in the inner region of the inductor. An input path is coupled to the outer inductor portion through the extension portion and extends away from the inductor beneath the outer inductor portion on a first side thereof. An output path is coupled to the outer inductor portion through the extension portion and extends away from the inductor beneath the outer inductor portion on a second side of the inductor opposite the first side.
    Type: Application
    Filed: January 29, 2008
    Publication date: May 22, 2008
    Inventors: Shigenobu Maeda, Jeong-hwan Yang
  • Publication number: 20080099786
    Abstract: In semiconductor devices in which both NMOS devices and PMOS devices are used to perform in different modes such as analog and digital modes, stress engineering is selectively applied to particular devices depending on their required operational modes. That is, the appropriate mechanical stress, i.e., tensile or compressive, can be applied to and/or removed from devices, i.e., NMOS and/or PMOS devices, based not only on their conductivity type, i.e., n-type or p-type, but also on their intended operational application, for example, analog/digital, low-voltage/high-voltage, high-speed/low-speed, noise-sensitive/noise-insensitive, etc. The result is that performance of individual devices is optimized based on the mode in which they operate.
    Type: Application
    Filed: December 20, 2007
    Publication date: May 1, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Shigenobu Maeda, Jeong Yang
  • Patent number: 7358569
    Abstract: An SOI layer is provided in a buried oxide film and a source and a drain are provided on the upper surface of the SOI layer so that they are kept from contact with the buried oxide film. A depletion layer formed by the source, the drain, and the SOI layer extends to reach the buried oxide film, so parasitic capacitance is reduced. This structure achieves an SOIMOS transistor capable of reducing junction capacitance at low drain voltage.
    Type: Grant
    Filed: October 23, 2002
    Date of Patent: April 15, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Takuji Matsumoto, Shigenobu Maeda
  • Publication number: 20080081436
    Abstract: It is an object to provide an SOI device capable of carrying out body fixation and implementing a quick and stable operation. A gate insulating film (11) having a thickness of 1 to 5 nm is provided between a portion other than a gate contact pad (GP) of a gate electrode (12) and an SOI layer (3), and a gate insulating film (110) having a thickness of 5 to 15 nm is provided between the gate contact pad (GP) and the SOI layer (3). The gate insulating film (11) and the gate insulating film (110) are provided continuously.
    Type: Application
    Filed: October 30, 2007
    Publication date: April 3, 2008
    Applicant: Renesas Technology Corp.
    Inventors: Shigenobu MAEDA, Takuji Matsumoto, Toshiaki Iwamatsu, Takashi Ipposhi
  • Publication number: 20080064157
    Abstract: In semiconductor devices in which both NMOS devices and PMOS devices are used to perform in different modes such as analog and digital modes, stress engineering is selectively applied to particular devices depending on their required operational modes. That is, the appropriate mechanical stress, i.e., tensile or compressive, can be applied to and/or removed from devices, i.e., NMOS and/or PMOS devices, based not only on their conductivity type, i.e., n-type or p-type, but also on their intended operational application, for example, analog/digital, low-voltage/high-voltage, high-speed/low-speed, noise-sensitive/noise-insensitive, etc. The result is that performance of individual devices is optimized based on the mode in which they operate.
    Type: Application
    Filed: October 31, 2007
    Publication date: March 13, 2008
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Shigenobu Maeda, Jeong Hwan Yang
  • Publication number: 20080054414
    Abstract: In formation of a source/drain region of an NMOS transistor, a gate-directional extension region <41a> of an N+ block region <41> in an N+ block resist film <51> prevents a well region <11> located under the gate-directional extension region <41a> from implantation of an N-type impurity. A high resistance forming region, which is the well region <11> having a possibility for implantation of an N-type impurity on a longitudinal extension of a gate electrode <9>, can be formed as a high resistance forming region <A2> narrower than a conventional high resistance forming region <A1>. Thus, a semiconductor device having a partially isolated body fixed SOI structure capable of reducing body resistance and a method of manufacturing the same are obtained.
    Type: Application
    Filed: October 18, 2007
    Publication date: March 6, 2008
    Applicant: RENESAS TECHNOLOGY CORP.
    Inventors: Shigenobu MAEDA, Toshiaki IWAMATSU, Takashi IPPOSHI
  • Patent number: 7339238
    Abstract: It is an object to obtain a semiconductor device including a capacitance having a great Q-value. In an SOI substrate comprising a support substrate (165), a buried oxide film (166) and an SOI layer (171), an isolating oxide film 167 (167a to 167c) is selectively formed in an upper layer portion of the SOI layer (171) with a part of the SOI layer (171) remaining as a P? well region (169). Consequently, an isolation (partial isolation) structure is obtained. An N+ diffusion region (168) is formed in the SOI layer (171) between the isolating oxide films (167a) and (167b) and a P+ diffusion region (170) is formed in the SOI layer (171) between the isolating oxide films (167b) and (167c). Consequently, there is obtained a junction type variable capacitance (C23) having a PN junction surface of the P? well region (169) provided under the isolating oxide film (167b) and the N+ diffusion region (168).
    Type: Grant
    Filed: August 28, 2006
    Date of Patent: March 4, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Shigenobu Maeda, Takashi Ipposhi, Yuuichi Hirano
  • Patent number: 7339213
    Abstract: In a semiconductor capable of reducing NBTI and a method for manufacturing the same, a multi-gate transistor includes an active region, gate dielectric, channels in the active region, and gate electrodes, and is formed on a semiconductor wafer. The active region has a top and side surfaces, and is oriented in a first direction. The gate dielectric is formed on the top and side surfaces of the active region. The channels are formed in the top and side surfaces of the active region. The gate electrodes are formed on the gate dielectric corresponding to the channels and aligned perpendicular to the active region such that current flows in the first direction. In one aspect of the invention, an SOI layer having a second orientation indicator in a second direction is formed on a supporting substrate having a first orientation indicator in a first direction. A multi-gate transistor is formed on the SOI layer.
    Type: Grant
    Filed: December 29, 2004
    Date of Patent: March 4, 2008
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Shigenobu Maeda, Jeong Hwan Yang, Junga Choi
  • Publication number: 20080050864
    Abstract: In formation of a source/drain region of an NMOS transistor, a gate-directional extension region <41a> of an N+ block region <41> in an N+ block resist film <51> prevents a well region <11> located under the gate-directional extension region <41a> from implantation of an N-type impurity. A high resistance forming region, which is the well region <11> having a possibility for implantation of an N-type impurity on a longitudinal extension of a gate electrode <9>, can be formed as a high resistance forming region <A2> narrower than a conventional high resistance forming region <A1>. Thus, a semiconductor device having a partially isolated body fixed SOI structure capable of reducing body resistance and a method of manufacturing the same are obtained.
    Type: Application
    Filed: October 18, 2007
    Publication date: February 28, 2008
    Applicant: RENESAS TECHNONOLY CORP.
    Inventors: Shigenobu MAEDA, Toshiaki IWAMATSU, Takashi IPPOSHI
  • Publication number: 20080035996
    Abstract: A semiconductor device having an SOI structure including a semiconductor substrate, a buried insulating layer and an SOI layer including, first and second element formation regions provided in said SOI layer, a partial isolation region including a partial insulating film provided in an upper layer portion of said SOI layer and a semiconductor region to be a part of said SOI layer which is provided under said partial insulating film and serving to isolate said first and second element formation regions from each other, and first and second MOS transistors formed in said first and second element formation regions, respectively, wherein at least one of a structure of a body region, a structure of a gate electrode and presence/absence of body potential fixation in said first and second MOS transistors is varied to make transistor characteristics of said first and second MOS transistors different from each other.
    Type: Application
    Filed: July 30, 2007
    Publication date: February 14, 2008
    Applicant: Renesas Technology Corp.
    Inventors: TAKUJI MATSUMOTO, SHIGENOBU MAEDA, TOSHIAKI IWAMATSU, TAKASHI IPPOSHI
  • Publication number: 20080032487
    Abstract: A semiconductor wafer manufacturing method comprising the steps of preparing first and second semiconductor wafers, bonding a main surface of said second semiconductor wafer to a main surface of said first semiconductor wafer, thinning said first semiconductor wafer, implanting oxygen ions from said first semiconductor wafer side into a neighborhood of a part where said first and second semiconductor wafers are bonded to each other, and forming the portion implanted with the oxygen ions into an oxide film layer by a thermal treatment.
    Type: Application
    Filed: October 5, 2007
    Publication date: February 7, 2008
    Applicant: Renesas Technology Corp.
    Inventors: Toshiaki Iwamatsu, Shigenobu Maeda
  • Publication number: 20080032486
    Abstract: A semiconductor wafer manufacturing method comprising the steps of preparing a first semiconductor wafer having a plurality of cuts formed at edge portions in crystal directions, preparing a second semiconductor wafer having a cut formed at an edge portion in a crystal direction that is different from the crystal direction of one of said plurality of cuts of said first semiconductor wafer, bonding said first and second semiconductor wafers to each other while using said one of said plurality of cuts of said first semiconductor wafer and said cut of said second semiconductor wafer in order to position said first and second semiconductor wafers, with another one of said plurality of cuts of said first semiconductor wafer being engaged with a guide portion of a semiconductor wafer manufacturing apparatus, thinning said first semiconductor wafer, implanting oxygen ions from said first semiconductor wafer side into a neighborhood of a part where said first and second semiconductor wafers are bonded to each other,
    Type: Application
    Filed: October 5, 2007
    Publication date: February 7, 2008
    Applicant: Renesas Technology Corp.
    Inventors: Toshiaki Iwamatsu, Shigenobu Maeda
  • Publication number: 20080017924
    Abstract: A semiconductor device having an SOI structure including a semiconductor substrate, a buried insulating layer and an SOI layer, including first and second semiconductor regions of a predetermined conductivity type provided in an element formation region of said SOI layer, and a partial insulating film provided in an upper layer portion of said element formation region and a partial insulating film lower semiconductor region of a predetermined conductivity type to be a part of said element formation region in a lower layer portion of said element formation region wherein said partial insulating film lower semiconductor region is electrically connected to said first and second semiconductor regions to constitute a resistive element.
    Type: Application
    Filed: July 30, 2007
    Publication date: January 24, 2008
    Applicant: Renesas Technology Corp.
    Inventors: Takuji MATSUMOTO, Shigenobu MAEDA, Toshiaki IWAMATSU, Takashi IPPOSHI
  • Patent number: 7321152
    Abstract: Provided are a thin-film transistor formed by connecting polysilicon layers having different conductivity types with each other which prevents occurrence of inconvenience resulting from diffusion of impurities and a method of fabricating the same. A drain (6), a channel (7) and a source (8) are integrally formed on a surface of a second oxide film (4) by polysilicon. The drain (6) is formed to be connected with a pad layer (3) (second polycrystalline semiconductor layer) through a contact hole (5) which is formed to reach an upper surface of the pad layer (3). The pad layer (3) positioned on a bottom portion of the contact hole (5) (opening) is provided with a boron implantation region BR.
    Type: Grant
    Filed: August 4, 2006
    Date of Patent: January 22, 2008
    Assignee: Renesas Technology Corp.
    Inventors: Shigeto Maegawa, Takashi Ipposhi, Toshiaki Iwamatsu, Shigenobu Maeda, Il-Jung Kim, Kazuhito Tsutsumi, Hirotada Kuriyama, Yoshiyuki Ishigaki, Motomu Ukita, Toshiaki Tsutsumi
  • Publication number: 20070296009
    Abstract: It is an object to obtain a semiconductor device including a capacitance having a great Q-value. In an SOI substrate comprising a support substrate (165), a buried oxide film (166) and an SOI layer (171), an isolating oxide film 167 (167a to 167c) is selectively formed in an upper layer portion of the SOI layer (171) with a part of the SOI layer (171) remaining as a P? well region (169). Consequently, an isolation (partial isolation) structure is obtained. An N+ diffusion region (168) is formed in the SOI layer (171) between the isolating oxide films (167a) and (167b) and a P+ diffusion region (170) is formed in the SOI layer (171) between the isolating oxide films (167b) and (167c). Consequently, there is obtained a junction type variable capacitance (C23) having a PN junction surface of the P? well region (169) provided under the isolating oxide film (167b) and the N+ diffusion region (168).
    Type: Application
    Filed: August 17, 2007
    Publication date: December 27, 2007
    Applicant: Renesas Technology Corp.
    Inventors: Shigenobu MAEDA, Takashi IPPOSHI, Yuuichi HIRANO
  • Patent number: 7303950
    Abstract: A partial oxide film (31) with well regions formed therebeneath isolates transistor formation regions in an SOI layer (3) from each other. A p-type well region (11) is formed beneath part of the partial oxide film (31) which isolates NMOS transistors from each other, and an n-type well region (12) is formed beneath part of the partial oxide film (31) which isolates PMOS transistors from each other. The p-type well region (11) and the n-type well region (12) are formed in side-by-side relation beneath part of the partial oxide film (31) which provides isolation between the NMOS and PMOS transistors. A body region is in contact with the well region (11) adjacent thereto. An interconnect layer formed on an interlayer insulation film (4) is electrically connected to the body region through a body contact provided in the interlayer insulation film (4). A semiconductor device having an SOI structure reduces a floating-substrate effect.
    Type: Grant
    Filed: January 14, 2005
    Date of Patent: December 4, 2007
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yasuo Yamaguchi, Shigeto Maegawa, Takashi Ipposhi, Toshiaki Iwamatsu, Shigenobu Maeda, Yuuichi Hirano, Takuji Matsumoto, Shoichi Miyamoto