Patents by Inventor Mitsunori Nakamori

Mitsunori Nakamori 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: 20060163205
    Abstract: A resist film and a polymer layer adhered on a semiconductor substrate can be removed by the method according to the present invention. A first processing liquid, typically including a oxidizing agent, such as hydrogen peroxide solution, is fed to the substrate, thereby the condition of the resist film and the polymer layer is changed. Next, a second processing liquid, typically including a dimethyl sulfoxide and an amine solvent, is fed to the substrate, thereby the resist film and the polymer layer is dissolved and lifted off from the substrate. A sputtered copper particles included in the polymer layer can also be removed.
    Type: Application
    Filed: November 14, 2005
    Publication date: July 27, 2006
    Inventors: Takayuki Niuya, Takehiko Orii, Hiroyuki Mori, Hiroshi Yano, Mitsunori Nakamori
  • Publication number: 20060079096
    Abstract: A substrate processing method for removing a resist film from a substrate having the resist film formed thereon comprises maintaining the inner region of the chamber at a prescribed temperature by putting a substrate in a chamber, denaturing the resist film by supplying ozone and a water vapor in such a manner that ozone is supplied into the chamber while a water vapor is supplied into the chamber at a prescribed flow rate, the amount of ozone relative to the amount of the water vapor being adjusted such that the dew formation within the chamber is prevented, and processing the substrate with a prescribed liquid material so as to remove the denatured resist film from the substrate.
    Type: Application
    Filed: October 5, 2005
    Publication date: April 13, 2006
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Mitsunori Nakamori, Tadashi Iino, Noritaka Uchida, Takehiko Orii
  • Patent number: 6979655
    Abstract: A resist film and a polymer layer adhered on a semiconductor substrate can be removed by the method according to the present invention. A first processing liquid, typically including a oxidizing agent, such as hydrogen peroxide solution, is fed to the substrate, thereby the condition of the resist film and the polymer layer is changed. Next, a second processing liquid, typically including a dimethyl sulfoxide and an amine solvent, is fed to the substrate, thereby the resist film and the polymer layer is dissolved and lifted off from the substrate. A sputtered copper particles included in the polymer layer can also be removed.
    Type: Grant
    Filed: November 15, 2002
    Date of Patent: December 27, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Takayuki Niuya, Takehiko Orii, Hiroyuki Mori, Hiroshi Yano, Mitsunori Nakamori
  • Patent number: 6863741
    Abstract: Where a substrate such as a semiconductor wafer held in a process space in a process chamber consisting of an outside chamber and an inside chamber is subjected to a cleaning processing, a chemical agent such as IPA or a solvent having a surfactant added thereto is supplied in the form of a mist or a vapor toward the substrate under the sate that the substrate is stopped or rotated at a low speed after processing with a chemical agent and a subsequent rinsing processing with a pure water. After the supply of the chemical agent is stopped, the substrate is rotated at a rotating speed higher than said low speed so as to centrifugally remove the chemical agent attached to the substrate.
    Type: Grant
    Filed: July 19, 2001
    Date of Patent: March 8, 2005
    Assignee: Tokyo Electron Limited
    Inventors: Takehiko Orii, Mitsunori Nakamori
  • Patent number: 6589338
    Abstract: This substrate processing device is identical to a wafer cleaning device 5 for cleaning a wafer W, which includes a supply nozzle 34 for supplying APM and the pure water, a spin chuck 31 for carrying the wafer W and a container 31 for accommodating the spin chuck 31. The container 30 includes an inner processing chamber 42 and an outer processing chamber 43 and is constructed so as to be movable up and down to the spin chuck 31. A first drainage line 50 is connected to the inner processing chamber 42 to discharge APM and the interior atmosphere, while a second drainage line 51 is connected to the outer processing chamber 43 to discharge pure water and the interior atmosphere. With the connection of the first drainage line 50, the wafer cleaning device 5 is adapted so that the supply nozzle 34 supplies APM to a surface of the wafer W again. Therefore, it is possible to reuse this processing liquid advantageously and additionally, an exhaust displacement can be reduced.
    Type: Grant
    Filed: November 30, 2000
    Date of Patent: July 8, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Mitsunori Nakamori, Hiroki Taniyama, Takanori Miyazaki
  • Publication number: 20030119318
    Abstract: A resist film and a polymer layer adhered on a semiconductor substrate can be removed by the method according to the present invention. A first processing liquid, typically including a oxidizing agent, such as hydrogen peroxide solution, is fed to the substrate, thereby the condition of the resist film and the polymer layer is changed. Next, a second processing liquid, typically including a dimethyl sulfoxide and an amine solvent, is fed to the substrate, thereby the resist film and the polymer layer is dissolved and lifted off from the substrate. A sputtered copper particles included in the polymer layer can also be removed.
    Type: Application
    Filed: November 15, 2002
    Publication date: June 26, 2003
    Inventors: Takayuki Niuya, Takehiko Orii, Hiroyuki Mori, Hiroshi Yano, Mitsunori Nakamori
  • Patent number: 6348157
    Abstract: A cleaning method capable of processing at room temperatures without conducting heating, uses little chemicals and water, and does not require special devices or materials. The chemical cleaning processes and rinse processes employ pure water or ultrapure water in a semiconductor wet cleaning process, rinse water or chemicals which suppresses formation of surface oxide films, removes particles and prevent their redeposition, and aids in the hydrogen termination of the silicon atoms. The cleaning method of the resent invention includes cleaning which is conducted using pure water containing ozone, cleaning conducted using a cleaning liquid containing HF, H2O, and surfactant, while applying vibration having a frequency of 500 kHz or more, cleaning conducted using pure water containing ozone, cleaning conducted using a cleaning liquid containing HF and H2O in order to remove oxide films, and cleaning which is conducted using pure water.
    Type: Grant
    Filed: June 12, 1998
    Date of Patent: February 19, 2002
    Assignees: Kabushiki Kaisha Ultraclean Technology Research Institute
    Inventors: Tadahiro Ohmi, Takahisa Nitta, Kazuhiko Kawada, Mitsunori Nakamori, Toshihiro II
  • Publication number: 20020007844
    Abstract: Where a substrate such as a semiconductor wafer held in a process space in a process chamber consisting of an outside chamber and an inside chamber is subjected to a cleaning processing, a chemical agent such as IPA or a solvent having a surfactant added thereto is supplied in the form of a mist or a vapor toward the substrate under the sate that the substrate is stopped or rotated at a low speed after processing with a chemical agent and a subsequent rinsing processing with a pure water. After the supply of the chemical agent is stopped, the substrate is rotated at a rotating speed higher than said low speed so as to centrifugally remove the chemical agent attached to the substrate.
    Type: Application
    Filed: July 19, 2001
    Publication date: January 24, 2002
    Inventors: Takehiko Orii, Mitsunori Nakamori