Patents by Inventor Nobuo Konishi

Nobuo Konishi 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: 7300598
    Abstract: The invention relates to a process including a chemical liquid treatment and a rinse liquid treatment on a substrate, more particularly to a technique for reducing consumption of a chemical liquid while achieving uniform process and preventing particle generation. In a specific embodiment, the process is performed for removing a silicon oxide film formed on a silicon wafer. The process includes three subsequently performed steps, in which (1) diluted hydrofluoric acid (DHF), (2) DHF and de-ionized water (DIW), (3) DIW are supplied, respectively, onto a rotating wafer. Transition from step (1) to step (2) is done immediately before the hydrophilic silicon oxide film is dissolved to expose the underlying hydrophobic silicon layer.
    Type: Grant
    Filed: March 30, 2004
    Date of Patent: November 27, 2007
    Assignee: Tokyo Electron Limited
    Inventors: Nobuo Konishi, Takayuki Toshima, Takehiko Orii
  • Publication number: 20050260771
    Abstract: An object of the present invention is to previously subject a substrate such as a wafer to predetermined processing to prevent a hard mask or the like from peeling off during polishing processing performed later. In the present invention, a sloped part such that its film thickness becomes thinner toward an outer peripheral part and an end part of the substrate on which a film is formed is formed.
    Type: Application
    Filed: July 1, 2003
    Publication date: November 24, 2005
    Inventors: Mitsuaki Iwashita, Nobuo Konishi
  • Publication number: 20050026454
    Abstract: The present invention comprises the steps of performing a reforming process on a surface of a low dielectric constant insulation film formed on a substrate which includes one of a porous low dielectric constant insulation film and a non-porous low dielectric constant insulation film and forming an insulation film as at least one of an etching mask and a Chemical Mechanical Polishing stopper (CMP stopper) on the reformed surface of the low dielectric constant insulation film. For example, plasma is radiated as a reforming process mentioned above, the surface roughness of a low dielectric insulation film is increased and, as a result, adhesion between the films and also between the inter-layer insulation film and other neighboring films can be improved with so-called “anchor effect”.
    Type: Application
    Filed: August 27, 2004
    Publication date: February 3, 2005
    Inventors: Nobuo Konishi, Mitsuaki Iwashita, Hiroki Ohno, Shigeru Kawamura, Masahito Sugiura
  • Patent number: 6800546
    Abstract: The present invention comprises the steps of performing a reforming process on a surface of a low dielectric constant insulation film formed on a substrate which includes one of a porous low dielectric constant insulation film and a non-porous low dielectric constant insulation film and forming an insulation film as at least one of an etching mask and a Chemical Mechanical Polishing stopper (CMP stopper) on the reformed surface of the low dielectric constant insulation film. For example, plasma is radiated as a reforming process mentioned above, the surface roughness of a low dielectric insulation film is increased and, as a result, adhesion between the films and also between the inter-layer insulation film and other neighboring films can be improved with so-called “anchor effect”.
    Type: Grant
    Filed: March 12, 2002
    Date of Patent: October 5, 2004
    Assignee: Tokyo Electron Limited
    Inventors: Nobuo Konishi, Mitsuaki Iwashita, Hiroki Ohno, Shigeru Kawamura, Masahito Sugiura
  • Publication number: 20040187896
    Abstract: The invention relates to a process including a chemical liquid treatment and a rinse liquid treatment on a substrate, more particularly to a technique for reducing consumption of a chemical liquid while achieving uniform process and preventing particle generation. In a specific embodiment, the process is performed for removing a silicon oxide film formed on a silicon wafer. The process includes three subsequently performed steps, in which (1) diluted hydrofluoric acid (DHF), (2) DHF and de-ionized water (DIW), (3) DIW are supplied, respectively, onto a rotating wafer. Transition from step (1) to step (2) is done immediately before the hydrophilic silicon oxide film is dissolved to expose the underlying hydrophobic silicon layer.
    Type: Application
    Filed: March 30, 2004
    Publication date: September 30, 2004
    Inventors: Nobuo Konishi, Takayuki Toshima, Takehiko Orii
  • Publication number: 20040127019
    Abstract: After coating a resist for silylation on the semiconductor substrate, the resist is exposed with a pattern. Then the silylation process is performed to form a silylated layer and the silylated layer is hardened with performing an electron beam processing or a ultra-violet ray processing. After that, an etching is performed with using the hardened silylated layer as a mask and the wiring step is taken without removing the hardened silylated layer as a stopper for chemical mechanical polishing. With this embodiment, the patterning steps of an insulation film can be simplified.
    Type: Application
    Filed: December 18, 2003
    Publication date: July 1, 2004
    Inventors: Nobuo Konishi, Mitsuaki Iwashita
  • Patent number: 6683006
    Abstract: After coating a resist for silylation on the semi-conductor substrate, the resist is exposed with a pattern. Then the silylation process is performed to form a silylated layer and the silylated layer is hardened with performing an electron beam processing or a ultra-violet ray processing. After that, an etching is performed with using the hardened silylated layer as a mask and the wiring step is taken without removing the hardened silylated layer as a stopper for chemical mechanical polishing. With this embodiment, the patterning steps of an insulation film can be simplified.
    Type: Grant
    Filed: June 21, 2002
    Date of Patent: January 27, 2004
    Assignee: Tokyo Electron Limited
    Inventors: Nobuo Konishi, Mitsuaki Iwashita
  • Patent number: 6656273
    Abstract: In an organic insulating film coating apparatus, an organic insulating film is applied onto a wafer by a spin coating. Thereafter, the wafer is subjected to heat processing and an inorganic insulating film is applied onto the wafer by a spin coating in an inorganic insulating film coating apparatus. After the coating of the inorganic insulating film, the wafer is subjected to aging processing and exchange-chemical coating processing. Thereafter, a solvent in the coating film is removed in a low-temperature heat processing apparatus and a low-oxygen and high-temperature heat processing apparatus, and thermal processing is performed for the wafer in a low-oxygen curing and cooling processing apparatus.
    Type: Grant
    Filed: June 15, 2000
    Date of Patent: December 2, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Takayuki Toshima, Nobuo Konishi, Yoji Mizutani
  • Patent number: 6551400
    Abstract: A solvent of a resist solution is dropped from a solvent supply nozzle onto the surface of a semiconductor wafer held by a spin chuck. The semiconductor wafer is rotated by the spin chuck to spread the resist solution over the entire surface of the semiconductor wafer W. Simultaneously, the resist solution is dropped from a resist solution supply nozzle onto the semiconductor wafer and spread following the solvent. During the processing, the processing space is isolated from the outer atmosphere by closing a lid of a processing vessel and a sprayed solvent is supplied into the processing space. The processing space is thus filled with the mist of solvent. In the processing space supplied with the solvent, evaporation of the solvent from the resist solution is suppressed. A film of the resist solution is formed with a uniform film thickness to the edge of the semiconductor wafer W.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: April 22, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Keizo Hasbe, Shuuichi Nishikido, Nobuo Konishi, Takayuki Toshima, Kazutoshi Yoshioka
  • Patent number: 6514073
    Abstract: A resist processing method includes (a), to a substrate having a circuit pattern with an uneven surface formed thereon, coating a photoresist solution to, by doing so, form a photoresist film, (b) subjecting the substrate to heat processing to cause a portion of the photoresist film to be chemically modified to create a modified resist layer of a substantially uniform thickness from the uneven surface of the circuit pattern, and (c) selectively removing only a resist portion unmodified at the step (b) to leave a modified resist layer on the uneven surface of the circuit pattern.
    Type: Grant
    Filed: September 22, 2000
    Date of Patent: February 4, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Takayuki Toshima, Nobuo Konishi
  • Patent number: 6503003
    Abstract: A solvent of a resist solution is dropped from a solvent supply nozzle onto the surface of a semiconductor wafer held by a spin chuck. The semiconductor wafer is rotated by the spin chuck to spread the resist solution over the entire surface of the semiconductor wafer W. Simultaneously, the resist solution is dropped from a resist solution supply nozzle onto the semiconductor wafer and spread following the solvent. During the processing, the processing space is isolated from the outer atmosphere by closing a lid of a processing vessel and a sprayed solvent is supplied into the processing space. The processing space is thus filled with the mist of solvent. In the processing space supplied with the solvent, evaporation of the solvent from the resist solution is suppressed. A film of the resist solution is formed with a uniform film thickness to the edge of the semiconductor wafer W.
    Type: Grant
    Filed: March 26, 2001
    Date of Patent: January 7, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Keizo Hasebe, Shuuichi Nishikido, Nobuo Konishi, Takayuki Toshima, Kazutoshi Yoshioka
  • Publication number: 20020197878
    Abstract: After coating a resist for silylation on the semi-conductor substrate, the resist is exposed with a pattern. Then the silylation process is performed to form a silylated layer and the silylated layer is hardened with performing an electron beam processing or a ultra-violet ray processing. After that, an etching is performed with using the hardened silylated layer as a mask and the wiring step is taken without removing the hardened silylated layer as a stopper for chemical mechanical polishing. With this embodiment, the patterning steps of an insulation film can be simplified.
    Type: Application
    Filed: June 21, 2002
    Publication date: December 26, 2002
    Inventors: Nobuo Konishi, Mitsuaki Iwashita
  • Patent number: 6491452
    Abstract: When a resist film formed on a substrate is exposed in a predetermined pattern and thereafter an exposed pattern is developed, a substance capable of decreasing fluidity of the developing solution is added to the developing solution, the developing solution to which the substance is added is caused to become low-fluid under a predetermined condition, the developing solution is applied onto the exposed resist film on the substrate, and thereafter a predetermined trigger is given to the developing solution to cause the developing solution to become high-fluid so as to allow developing to progress. Thereby, line width can be made uniform and defects do not tend to occur during coating of the developing solution.
    Type: Grant
    Filed: April 11, 2001
    Date of Patent: December 10, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Nobuo Konishi, Takayuki Toshima, Tsutae Omori
  • Publication number: 20020177298
    Abstract: The present invention comprises the steps of performing a reforming process on a surface of a low dielectric constant insulation film formed on a substrate which includes one of a porous low dielectric constant insulation film and a non-porous low dielectric constant insulation film and forming an insulation film as at least one of an etching mask and a Chemical Mechanical Polishing stopper (CMP stopper) on the reformed surface of the low dielectric constant insulation film. For example, plasma is radiated as a reforming process mentioned above, the surface roughness of a low dielectric insulation film is increased and, as a result, adhesion between the films and also between the inter-layer insulation film and other neighboring films can be improved with so-called “anchor effect”.
    Type: Application
    Filed: March 12, 2002
    Publication date: November 28, 2002
    Inventors: Nobuo Konishi, Mitsuaki Iwashita, Hiroki Ohno, Shigeru Kawamura, Masahito Sugiura
  • Patent number: 6431258
    Abstract: A process solution supplying mechanism for supplying a process solution to a wafer, comprises a source for containing the process solution, a pipe for introducing the process solution from the source to the wafer, a process solution supply driving system for supplying the process solution from the source to the wafer, and a process solution supplying/stopping mechanism for carrying out apply and stop of the process solution, wherein the pipe and the process solution supply driving system are provided separately and the process solution supplying/stopping mechanism is provided to a portion other than the pipe.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: August 13, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Nobuo Konishi, Keizo Hirose
  • Patent number: 6385805
    Abstract: A scrubbing apparatus is provided which sufficiently cleans every site on the wafer by a cleaning accelerating action of ultrasonic waves, the scrubbing apparatus comprising a substrate support section for supporting a substrate horizontally and substantially in contact with a circumferential portion of the substrate while front side and back side surfaces of the substrate are substantially kept untouched in operation by the substrate, rotation drive means for driving the substrate support section to rotate in order to give a rotation force to the substrate, a brush for scrub-cleaning the substrate while contacting at least the front surface, a main nozzle provided with a first supply circuit for supplying a-cleaning liquid in at least a central region of the substrate, an auxiliary nozzle provided with a second supply circuit for supplying the cleaning liquid in at least a peripheral region of the substrate, and an ultrasonic oscillator for applying ultrasonic waves to the cleaning liquid supplied on the sub
    Type: Grant
    Filed: February 19, 1999
    Date of Patent: May 14, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Nobuo Konishi, Kenji Sekiguchi, Keizo Hirose
  • Patent number: 6383291
    Abstract: A process solution supplying mechanism for supplying a process solution to a wafer, comprises a source for containing the process solution, a pipe for introducing the process solution from the source to the wafer, a process solution supply driving system for supplying the process solution from the source to the wafer, and a process solution supplying/stopping mechanism for carrying out apply and stop of the process solution, wherein the pipe and the process solution supply driving system are provided separately and the process solution supplying/stopping mechanism is provided to a portion other than the pipe.
    Type: Grant
    Filed: November 9, 2000
    Date of Patent: May 7, 2002
    Assignee: Tokyo Electron Limited
    Inventor: Nobuo Konishi
  • Patent number: 6300043
    Abstract: A method of forming a resist film comprises (a) forming a resist film on a substrate, and (b) removing a surface region of the resist film formed in the step (a) so as to decrease the thickness of the resist film.
    Type: Grant
    Filed: November 30, 1998
    Date of Patent: October 9, 2001
    Assignee: Tokyo Electron Limited
    Inventors: Nobuo Konishi, Keizo Hirose
  • Publication number: 20010014224
    Abstract: A solvent of a resist solution is dropped from a solvent supply nozzle onto the surface of a semiconductor wafer held by a spin chuck. The semiconductor wafer is rotated by the spin chuck to spread the resist solution over the entire surface of the semiconductor wafer W. Simultaneously, the resist solution is dropped from a resist solution supply nozzle onto the semiconductor wafer and spread following the solvent. During the processing, the processing space is isolated from the outer atmosphere by closing a lid of a processing vessel and a sprayed solvent is supplied into the processing space. The processing space is thus filled with the mist of solvent. In the processing space supplied with the solvent, evaporation of the solvent from the resist solution is suppressed. A film of the resist solution is formed with a uniform film thickness to the edge of the semiconductor wafer W.
    Type: Application
    Filed: March 26, 2001
    Publication date: August 16, 2001
    Inventors: Keizo Hasebe, Shuuichi Nishikido, Nobuo Konishi, Takayuki Toshima, Kazutoshi Yoshioka
  • Publication number: 20010012456
    Abstract: When a resist film formed on a substrate is exposed in a predetermined pattern and thereafter an exposed pattern is developed, a substance capable of decreasing fluidity of the developing solution is added to the developing solution, the developing solution to which the substance is added is caused to become low-fluid under a predetermined condition, the developing solution is applied onto the exposed resist film on the substrate, and thereafter a predetermined trigger is given to the developing solution to cause the developing solution to become high-fluid so as to allow developing to progress. Thereby, line width can be made uniform and defects do not tend to occur during coating of the developing solution.
    Type: Application
    Filed: April 11, 2001
    Publication date: August 9, 2001
    Inventors: Nobuo Konishi, Takayuki Toshima, Tsutae Omori