Patents by Inventor Takashi Shigeoka

Takashi Shigeoka 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: 20070160757
    Abstract: In a processing apparatus which performs a film deposition by alternately supplying a plurality of source gases, the source gases are prevented from reacting within an exhaust pipe so as to prevent the exhaust pipe from clogging due to a reaction by-product. A gas supply to a processing container is switched between a TiCl4 supply system and a NH3 supply system. Additionally, a gas exhaust from the processing container is switched between a TiCl4 exhaust system and a NH3 exhaust system. The gas exhaust is switched to the TiCl4 exhaust system when the gas supply is switched to the TiCl4 supply system, and the gas exhaust is switched to the NH3 exhaust system when the gas supply is switched to the NH3 supply system. The switching is performed by a stop valve provided to each of the supply system and the exhaust system.
    Type: Application
    Filed: March 13, 2007
    Publication date: July 12, 2007
    Applicant: Tokyo Electron Limited
    Inventors: Tadahiro Ishizaka, Hiroshi Kannan, Yasuhiko Kojima, Takashi Shigeoka, Yasuhiro Oshima, Kohei Kawamura
  • Publication number: 20070138593
    Abstract: A semiconductor device includes a semiconductor substrate, a first memory cell transistor, a first select gate transistor, a second memory cell transistor, a second select gate transistor, a contact plug, silicon oxide films, and plasma films which are formed as the same layer as the silicon oxide films and are provided above upper surfaces of the first and the third gate electrodes.
    Type: Application
    Filed: November 10, 2006
    Publication date: June 21, 2007
    Inventors: Takashi Shigeoka, Shoichi Miyazaki
  • Publication number: 20060154383
    Abstract: In a processing apparatus, a process gas including a source gas (TiCl4, NH3) and an inert gas (N2) is supplied into a process chamber (2). A pressure meter (6) detects a pressure in the process chamber (2) so as to control an amount of flow of the process gas supplied to the process chamber (2) based on a result of the detection. A source gas is purged by the inert gas. By maintaining the amount of flow of the source gas constant and controlling the amount of flow of the inert gas, an amount of flow the entire process gas is controlled so as to maintain a pressure in the process chamber (2) constant. Since a time spent on evacuation of the source gas is reduced, a time for switching the source gas is reduced. Additionally, a temperature of a surface of a substrate during processing can be maintained constant.
    Type: Application
    Filed: August 15, 2003
    Publication date: July 13, 2006
    Inventors: Hiroshi Kannan, Tadahiro Ishizaka, Yasuhiko Kojima, Yasuhiro Oshima, Takashi Shigeoka
  • Publication number: 20060091556
    Abstract: A semiconductor device with a new three-dimensional structure comprises a semiconductor substrate including a trench vertically formed to a surface of the semiconductor substrate, a plurality of isolations formed in side and bottom surfaces of the trench in a depth direction of the trench, a plurality of functional elements formed on the side surfaces of the trench separated be the isolation and including an insulator, an electrode formed on the insulator and a pair of source/drain formed in the both sides of the electrode in the depth direction, and a wiring connected to the electrodes located in both sides of the isolation.
    Type: Application
    Filed: October 24, 2005
    Publication date: May 4, 2006
    Inventor: Takashi Shigeoka
  • Publication number: 20060068104
    Abstract: A film fabrication method for forming a film over a substrate in a processing chamber includes a first film formation process and a second film formation process. In the first film formation process, (a) a first step of supplying a first source gas containing a metal-organic compound and without containing a halogen element into the chamber and then removing the first source gas from the chamber, and (b) a second step of supplying a second source gas containing hydrogen or a hydrogen compound into the chamber and then removing the second source gas from the chamber, are repeated a predetermined number of times.
    Type: Application
    Filed: September 22, 2005
    Publication date: March 30, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tadahiro Ishizaka, Yasuhiro Oshima, Naoki Yoshii, Takashi Shigeoka, Kohei Kawamura, Yukio Fukuda, Yasuhiko Kojima
  • Publication number: 20060027167
    Abstract: A processing apparatus is disclosed which is capable of switching supplies of a raw material gas and a reducing gas alternately, while continuously forming a plasma of the reducing gas. An excitation device (12) excites a reducing gas supplied thereinto, and the excited reducing gas is supplied into a process chamber (2). A switching mechanism (20) is arranged between the excitation device (12) and the process chamber (2), and a bypass line (22) is connected to the switching mechanism (20). The switching mechanism (20) switches the flow of the excited reducing gas from the excitation device (12) between the process chamber (2) and the bypass line (22).
    Type: Application
    Filed: September 23, 2005
    Publication date: February 9, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Tadahiro Ishizaka, Naoki Yoshii, Kohei Kawamura, Yukio Fukuda, Takashi Shigeoka, Yasuhiko Kojima, Yasuhiro Oshima, Junichi Arami, Atsushi Gomi
  • Publication number: 20050241761
    Abstract: A substrate processing unit comprises a processing vessel for receiving a substrate, a cleaning gas supply system for supplying cleaning gas to the processing vessel so as to clean the interior of the processing vessel, an exhauster for exhausting the processing vessel, an operating state detector for detecting the operating state of the exhauster, and an end point detector for detecting the end point of the cleaning on the basis of the detection result from the operating state detector.
    Type: Application
    Filed: August 28, 2003
    Publication date: November 3, 2005
    Applicant: Tokyo Electron Limited
    Inventors: Hiroshi Kannan, Tadahiro Ishizaka, Yasuhiko Kojima, Yasuhiro Oshima, Takashi Shigeoka
  • Patent number: 6891131
    Abstract: A thermal processing system performs predetermined thermal processing on an approximately circular to-be-processed object, by applying radiant heat to the to-be-processed object by means of a heating lamp system. The heating lamp system comprises a plurality of lamps disposed concentrically so as to correspond to the to-be-processed object. The plurality of lamps are controlled individually for respective zones of the to-be-processed object.
    Type: Grant
    Filed: April 17, 2001
    Date of Patent: May 10, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Takeshi Sakuma, Takashi Shigeoka, Yicheng Li
  • Patent number: 6876816
    Abstract: A heat treatment apparatus achieves a uniform and rapid temperature rise of an object to be processed. A plurality of double-end lamps heat the object to be processed so as to apply a heat treatment process to the object. A plurality of reflectors reflect radiation heat of the double-end lamps toward the object to be processed. Each of the double-end lamps includes a rectilinear light-emitting part and at least two double-end lamps among the plurality of double-end lamps are arranged along a longitudinal direction of the light-emitting part, or each of the double-end lamps includes a rectilinear light-emitting part and the plurality of double-end lamps are arranged so that the light-emitting parts are parallel to each other and positioned in at least two stages.
    Type: Grant
    Filed: December 27, 2001
    Date of Patent: April 5, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Takashi Shigeoka, Takeshi Sakuma
  • Patent number: 6860634
    Abstract: A method of temperature measurement for measuring a temperature of an object to be measured that is heated by a heating source in a multiplex-reflection environment by using two radiation thermometers provided at a measurement part separated from the object to be measured is provided.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: March 1, 2005
    Assignee: Tokyo Electron Limited
    Inventor: Takashi Shigeoka
  • Publication number: 20040250765
    Abstract: In a processing apparatus which performs a film deposition by alternately supplying a plurality of source gases, the source gases are prevented from reacting within an exhaust pipe so as to prevent the exhaust pipe from clogging due to a reaction by-product. A gas supply to a processing container is switched between a TiCl4 supply system and a NH3 supply system. Additionally, a gas exhaust from the processing container is switched between a TiCl4 exhaust system and a NH3 exhaust system. The gas exhaust is switched to the TiCl4 exhaust system when the gas supply is switched to the TiCl4 supply system, and the gas exhaust is switched to the NH3 exhaust system when the gas supply is switched to the NH3 supply system. The switching is performed by a stop valve provided to each of the supply system and the exhaust system.
    Type: Application
    Filed: October 3, 2003
    Publication date: December 16, 2004
    Applicant: Tokyo Electron Limited
    Inventors: Tadahiro Ishizaka, Hiroshi Kannan, Yasuhiko Kojima, Takashi Shigeoka, Yasuhiro Oshima, Kohei Kawamura
  • Patent number: 6825615
    Abstract: A lamp for a heat treatment apparatus that provides a rapid temperature rise without using a reflector. The lamp has at least one electrode part to which an electric power is supplied. A light-emitting part, connected to the electrode part, seals a filament for emitting light. A high-reflectance film is formed on an outer surface of a first portion of the light-emitting part so as to reflect light emitted from the filament. Reflected light exits from the light-emitting part through a second portion not having a film formed thereon. Accordingly, directivity of light exiting from the second portion of the light-emitting part is improved.
    Type: Grant
    Filed: October 23, 2001
    Date of Patent: November 30, 2004
    Assignee: Tokyo Electron Limited
    Inventor: Takashi Shigeoka
  • Publication number: 20040112885
    Abstract: A heat treatment apparatus achieves a uniform and rapid temperature rise of an object to be processed. A plurality of double-end lamps heat the object to be processed so as to apply a heat treatment process to the object. A plurality of reflectors reflect radiation heat of the double-end lamps toward the object to be processed. Each of the double-end lamps includes a rectilinear light-emitting part and at least two double-end lamps among the plurality of double-end lamps are arranged along a longitudinal direction of the light-emitting part, or each of the double-end lamps includes a rectilinear light-emitting part and the plurality of double-end lamps are arranged so that the light-emitting parts are parallel to each other and positioned in at least two stages.
    Type: Application
    Filed: January 5, 2004
    Publication date: June 17, 2004
    Inventors: Takashi Shigeoka, Takeshi Sakuma
  • Publication number: 20040081757
    Abstract: A substrate treatment device includes: a treatment chamber in which a substrate is to be placed; a supply system configured to supply at least two kinds of treatment gases into the treatment chamber; an exhaust system having a pump, configured to exhaust the treatment gases from the treatment chamber; and a capturing unit interposed between the treatment chamber and the pump and containing fine grains, configured to capture by the fine grains at least one kind of the treatment gas exhausted from the treatment chamber.
    Type: Application
    Filed: August 28, 2003
    Publication date: April 29, 2004
    Applicant: Tokyo Electron Limited
    Inventors: Tadahiro Ishizaka, Kohei Kawamura, Hiroaki Yokoi, Takaya Shimizu, Takashi Shigeoka, Yasuhiro Oshima, Yasuhiko Kojima
  • Publication number: 20040042152
    Abstract: A processing apparatus has a reduced volume of a process chamber by simplifying a support structure of a substrate placement stage so as to perform a high-speed gas exchange. The process chamber made of metal applies a process to an object to be processes placed in the process chamber by supplying a process gas to the object to be processed. A placement stage made of ceramics or a metal matrix composite is located inside the process chamber so that the object to be processed is placed thereon. A heating device is incorporated into the placement stage. A support member made of a metal matrix composite supports the placement stage. A seal member is located between the support member and a wall surface of the process chamber. A cooling mechanism is located in the vicinity of the seal member so as to cool the seal member.
    Type: Application
    Filed: August 27, 2003
    Publication date: March 4, 2004
    Applicant: Tokyo Electron Limited
    Inventors: Tadahiro Ishizaka, Yasuhiko Kojima, Yasuhiro Oshima, Takashi Shigeoka
  • Publication number: 20040013419
    Abstract: A thermal processing system performs predetermined thermal processing on an approximately circular to-be-processed object, by applying radiant heat to the to-be-processed object by means of a heating lamp system. The heating lamp system comprises a plurality of lamps disposed concentrically so as to correspond to the to-be-processed object. The plurality of lamps are controlled individually for respective zones of the to-be-processed object.
    Type: Application
    Filed: June 18, 2003
    Publication date: January 22, 2004
    Inventors: Takeshi Sakuma, Takashi Shigeoka, Yicheng Li
  • Publication number: 20040004989
    Abstract: A method of temperature measurement for measuring a temperature of an object to be measured that is heated by a heating source in a multiplex-reflection environment by using two radiation thermometers provided at a measurement part separated from the object to be measured is provided.
    Type: Application
    Filed: April 22, 2003
    Publication date: January 8, 2004
    Inventor: Takashi Shigeoka
  • Patent number: 6641302
    Abstract: A thermal process apparatus for a semiconductor substrate, including a heating source heating the semiconductor substrate by irradiating a light on one side of the semiconductor substrate, a reflection plate facing to the semiconductor substrate in a state where a reflection cavity is formed with another side of the semiconductor substrate, a thermometer having a light-receiving part provided on the refection plate so as to measure a temperature of the semiconductor substrate by catching a radiation beam from the semiconductor substrate heated by the heating source by the light-receiving part; and light absorption means provided around the light-receiving part for absorbing a diffuse reflection light generated in the reflection cavity.
    Type: Grant
    Filed: September 26, 2001
    Date of Patent: November 4, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Yicheng Li, Takashi Shigeoka, Takeshi Sakuma
  • Patent number: 6534749
    Abstract: A heat treatment apparatus applies an accurate heat treatment to a wafer by performing an accurate measurement of a temperature of a wafer by a radiation thermometer. Halogen lamps heat the wafer by irradiating a light on a front surface of the wafer. A guard ring supports the wafer so that the front surface of the wafer faces the halogen lamps. A gap is formed between the guard ring and a back surface of the wafer. The radiation thermometer detects a light radiated from the backside of the wafer by a quartz rod facing the backside of the substrate. The wafer placed on the guard ring defines a first space on the front surface side of the wafer and a second space on the back surface side of the wafer.
    Type: Grant
    Filed: October 2, 2001
    Date of Patent: March 18, 2003
    Assignee: Tokyo Electron Limited
    Inventor: Takashi Shigeoka
  • Patent number: 6488407
    Abstract: The present invention intends to improve the accuracy of temperature measurement when measuring the temperature of a semiconductor wafer by a radiation thermometer on the basis of the idea of virtual blackbody simulated by multiple reflection of light. A system includes a wafer (W), a circular reflector 1 of a radius R disposed opposite to the wafer (W), and a probe (2) disposed in a through hole formed in the reflector (1). The probe (2) is a through hole. The radiation intensity of radiation passed the through hole is determined by image data provided by a CCD camera disposed behind the back surface of the reflector (1). An error in measured radiation intensity of radiation falling the probe (2) due to light that enters a space between the wafer (W) and the reflector (1) and a space between the reflector (1) and the probe (2) and light leaks from the same spaces is corrected, the emissivity of the wafer (W) is calculated and the temperature of the wafer (W) is determined.
    Type: Grant
    Filed: March 17, 2000
    Date of Patent: December 3, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Masayuki Kitamura, Eisuke Morisaki, Nobuaki Takahashi, Takashi Shigeoka