Patents by Inventor Takehiro WAJIKI

Takehiro WAJIKI 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: 11400480
    Abstract: In a substrate processing apparatus, neutralization processing is performed on a substrate by a neutralization device provided in a thermal processing section. In the neutralization device, at least one of a holder that holds the substrate and an emitter that emits vacuum ultraviolet rays is moved relative to another one in one direction. At this time, one surface of the substrate is irradiated with the vacuum ultraviolet rays emitted by the emitter. When the entire one surface of the substrate is irradiated with the vacuum ultraviolet rays, the neutralization processing ends. Thereafter, the substrate on which the neutralization processing has been performed is transported to a coating processing unit in a coating processing section. In the coating processing unit, a film of a processing liquid is formed on the one surface of the substrate on which the neutralization processing has been performed.
    Type: Grant
    Filed: February 3, 2017
    Date of Patent: August 2, 2022
    Inventors: Takehiro Wajiki, Tadashi Miyagi, Tsuyoshi Mitsuhashi
  • Publication number: 20210213480
    Abstract: In a substrate processing apparatus, neutralization processing is performed on a substrate by a neutralization device provided in a thermal processing section. In the neutralization device, at least one of a holder that holds the substrate and an emitter that emits vacuum ultraviolet rays is moved relative to another one in one direction. At this time, one surface of the substrate is irradiated with the vacuum ultraviolet rays emitted by the emitter. When the entire one surface of the substrate is irradiated with the vacuum ultraviolet rays, the neutralization processing ends. Thereafter, the substrate on which the neutralization processing has been performed is transported to a coating processing unit in a coating processing section. In the coating processing unit, a film of a processing liquid is formed on the one surface of the substrate on which the neutralization processing has been performed.
    Type: Application
    Filed: February 3, 2017
    Publication date: July 15, 2021
    Inventors: Takehiro WAJIKI, Tadashi MIYAGI, Tsuyoshi MISUHASHI
  • Patent number: 9937520
    Abstract: A nozzle starts discharging a processing liquid while a spin chuck holds and rotates a substrate having a water-repellent film being formed on a surface thereof. The processing liquid is discharged to a position spaced away from the center of the substrate by a preset distance, and flows so as to converge into one stream on the substrate immediately after discharge of the processing liquid starts. This achieves suppression of the minute water droplets. Moreover, the nozzle is moved toward outside of the substrate while discharging the processing liquid successively. This allows entire flow of the processing liquid to move toward outside of the substrate while the processing liquid converging into one stream on the substrate is maintained. Here, inside the flow of the processing liquid is a dried region.
    Type: Grant
    Filed: May 26, 2015
    Date of Patent: April 10, 2018
    Assignee: SCREEN Holdings Co., Ltd.
    Inventors: Masashi Kanaoka, Takehiro Wajiki, Shinichi Takada
  • Publication number: 20150352591
    Abstract: A nozzle starts discharging a processing liquid while a spin chuck holds and rotates a substrate having a water-repellent film being formed on a surface thereof. The processing liquid is discharged to a position spaced away from the center of the substrate by a preset distance, and flows so as to converge into one stream on the substrate immediately after discharge of the processing liquid starts. This achieves suppression of the minute water droplets. Moreover, the nozzle is moved toward outside of the substrate while discharging the processing liquid successively. This allows entire flow of the processing liquid to move toward outside of the substrate while the processing liquid converging into one stream on the substrate is maintained. Here, inside the flow of the processing liquid is a dried region.
    Type: Application
    Filed: May 26, 2015
    Publication date: December 10, 2015
    Inventors: Masashi KANAOKA, Takehiro WAJIKI, Shinichi TAKADA
  • Patent number: 9063429
    Abstract: After a developing step, a substrate is spun at high speeds without supplying a cleaning liquid to a surface of the substrate. This causes a large centrifugal force to act on a developer on a resist film. Consequently, the developer can be removed rapidly from the surface of the substrate. As a result, development can be stopped at an expected timing. Moreover, a circuit pattern having an expected dimension can be obtained. At this time, a dissolved product is also removable with the developer from the substrate. This can avoid failure in development caused by the dissolved product. Consequently, suitably maintained quality of negative development can be achieved with a reduced usage amount of the cleaning liquid.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: June 23, 2015
    Assignee: SCREEN Semiconductor Solutions Co., Ltd.
    Inventors: Tadashi Miyagi, Tsuyoshi Mitsuhashi, Takehiro Wajiki
  • Publication number: 20140199638
    Abstract: After a developing step, a substrate is spun at high speeds without supplying a cleaning liquid to a surface of the substrate. This causes a large centrifugal force to act on a developer on a resist film. Consequently, the developer can be removed rapidly from the surface of the substrate. As a result, development can be stopped at an expected timing. Moreover, a circuit pattern having an expected dimension can be obtained. At this time, a dissolved product is also removable with the developer from the substrate. This can avoid failure in development caused by the dissolved product. Consequently, suitably maintained quality of negative development can be achieved with a reduced usage amount of the cleaning liquid.
    Type: Application
    Filed: December 27, 2013
    Publication date: July 17, 2014
    Applicant: SOKUDO CO., LTD.
    Inventors: Tadashi MIYAGI, Tsuyoshi MITSUHASHI, Takehiro WAJIKI