Patents by Inventor Kazuyoshi Eshima

Kazuyoshi Eshima 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: 10276408
    Abstract: A flow-rate regulator device for controlling a flow rate of a liquid includes a first flow-rate regulator component positioned on an upstream side of a liquid line, and a second flow-rate regulator component positioned on a downstream side of the liquid line and connected in series to the first flow-rate regulator component. The first flow-rate regulator component adjusts a degree of opening such that a flow rate of liquid flowing through the liquid line is set a specified number of times greater than a target flow rate when the second flow-rate regulator component has a full opening, and the second flow-rate regulator component adjusts a degree of opening such that the flow rate of the liquid flowing through the liquid line is to be at the target flow rate when the first flow-rate regulator component is adjusted to have the degree of opening.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: April 30, 2019
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Michitaka Amiya, Takami Satoh, Kazuyoshi Eshima, Akihiro Nakamura, Koji Tanaka, Kazuki Kosai
  • Patent number: 9452397
    Abstract: A liquid processing apparatus 200 includes a pure water supply source 20; a pure water flow rate control opening/closing valve 27; a sulfuric acid supply unit 30; a sulfuric acid supply opening/closing valve 34; mixing tanks 11 and 12 configured to mix pure water and sulfuric acid to produce a mixed chemical liquid and connected to a circulation line 100 having a circulation pump 101; a liquid processing unit 210 configured to perform a liquid process on a substrate W with the mixed chemical liquid. A controller 300 controls a pure water supply opening/closing valve 26, the sulfuric acid supply opening/closing valve 34, and the circulation pump 101, such that operation of the circulation pump 101 is started after starting supply of the pure water to the mixing tanks 11 and 12, and then, supply of sulfuric acid to the mixing tanks 11 and 12 is started.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: September 27, 2016
    Assignee: TOKYO ELECTRON LIMITED
    Inventors: Hiroshi Komiya, Kazuyoshi Eshima
  • Publication number: 20150380280
    Abstract: A flow-rate regulator device for controlling a flow rate of a liquid includes a first flow-rate regulator component positioned on an upstream side of a liquid line, and a second flow-rate regulator component positioned on a downstream side of the liquid line and connected in series to the first flow-rate regulator component. The first flow-rate regulator component adjusts a degree of opening such that a flow rate of liquid flowing through the liquid line is set a specified number of times greater than a target flow rate when the second flow-rate regulator component has a full opening, and the second flow-rate regulator component adjusts a degree of opening such that the flow rate of the liquid flowing through the liquid line is to be at the target flow rate when the first flow-rate regulator component is adjusted to have the degree of opening.
    Type: Application
    Filed: September 10, 2015
    Publication date: December 31, 2015
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Michitaka AMIYA, Takami SATOH, Kazuyoshi ESHIMA, Akihiro NAKAMURA, Koji TANAKA, Kazuki KOSAI
  • Patent number: 8978670
    Abstract: Provided is a substrate processing apparatus wherein, even if a trouble occurs, it is bound to continue a process for the substrate without stopping the substrate processing apparatus entirely. The substrate processing apparatus according to the present disclosure includes first and second substrate conveying devices configured to convey wafers, and first and second processing blocks provided on the right and left sides of the substrate conveying device and having processing unit arrays each configured to perform the same process. Processing unit arrays on one side and processing unit arrays on the other side are respectively connected to a processing liquid supply system commonly provided with them. And, when any one of substrate conveying devices, processing liquid supply systems has a problem, the process for the wafer can be performed in the processing unit array to which the substrate conveying device and the processing liquid supply system under normal operation belong.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: March 17, 2015
    Assignee: Tokyo Electron Limited
    Inventors: Junya Minamida, Issei Ueda, Yasuhiro Chouno, Osamu Kuroda, Kazuyoshi Eshima, Masahiro Yoshida, Satoshi Morita
  • Patent number: 8820335
    Abstract: Disclosed is a cleaning apparatus capable of cleaning a holding unit of a holding member that holds a substrate. The cleaning apparatus is configured to prevent a cleaning liquid from adhering to a rear-end unit of the holding member where a drying is difficult to be done, while a cleaning process is performed by spraying the cleaning liquid to the holding unit. Also disclosed are a substrate processing system that incorporates the cleaning apparatus, a cleaning method based on the cleaning apparatus, a program to perform the cleaning method, and a storage medium to store the program. The cleaning apparatus is equipped with a cleaning unit that cleans the holding unit by spraying the cleaning liquid to the holding unit, and a cover unit that covers the rear-end unit by making a back-and-forth operation with respect to the holding member.
    Type: Grant
    Filed: May 12, 2010
    Date of Patent: September 2, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Michitaka Amiya, Kazuyoshi Eshima
  • Patent number: 8777695
    Abstract: An ultrasonic cleaning apparatus according to the present invention comprises a plurality of cleaning tanks configured to store a cleaning liquid, an object-to-be-processed holder capable of being inserted into each cleaning tank, the object-to-be-processed holder being configured to hold an object to be processed and to immerse the object to be processed into the cleaning liquid, a vibrator disposed on each cleaning tank, a single ultrasonic oscillator configured to make each vibrator ultrasonically vibrate, an output switch interposed between the ultrasonic oscillator and the vibrator of each respective cleaning tank, the output switch being configured to switch the vibrator that is connected to the ultrasonic oscillator, and a control device configured to control the ultrasonic oscillator and the output switch, wherein the control device controls the ultrasonic oscillator and the output switch such that a timing at which the vibrator of one of the cleaning tanks is made to ultrasonically vibrate, and a tim
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: July 15, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Hideaki Sato, Kazuyoshi Eshima, Hiromi Hara, Hirozumi Hoshino
  • Patent number: 8670656
    Abstract: Disclosed are a liquid heating unit capable of monitoring the temperature of the liquid storage tank or pipe in which liquid is heated by transmission of the radiated light, a liquid processing apparatus including the same, and a liquid processing method. The liquid heating unit includes: a lamp heater radiating light; a cylindrical member made of material transmitting the radiated light and having a cylindrical shape in which the lamp heater is able to be inserted and penetrated into an internal space thereof; a liquid pipe placed along an outer periphery of the cylindrical member and configured to heat liquid flowing therein using the radiated light; a reflection plate that covers the liquid pipe from the outside and reflects the radiated light; and a first temperature sensor attached to an outer surface of the reflection plate.
    Type: Grant
    Filed: August 24, 2011
    Date of Patent: March 11, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Toshihiko Nishida, Kazuyoshi Eshima, Hisakazu Nakayama
  • Patent number: 8652344
    Abstract: A plurality of process liquid supply nozzles 10 are arranged at different levels on right and left sides of a semiconductor wafer W in a process bath 1. A discharge port of each of the nozzles 10 is directed toward the semiconductor wafer W. In accordance with a predetermined procedure, a process liquid is discharged from one or more nozzles 10 selected from the plurality of nozzles 10. In order to perform a chemical liquid treatment, a chemical liquid is discharged from the lowermost nozzle 10, for example, and thereafter, the nozzles 10 on the upper levels sequentially discharge the chemical liquid. In order to perform a rinse liquid treatment by replacing the chemical liquid in the process bath 1 with a rinse liquid, the rinse liquid is discharged from the lowermost nozzle 10 at first, for example. Thereafter, the rinse liquid is discharged from all the nozzles 10. In this manner, efficiency and uniformity in the liquid treatment can be improved.
    Type: Grant
    Filed: March 12, 2009
    Date of Patent: February 18, 2014
    Assignee: Tokyo Electron Limited
    Inventors: Kotaro Tsurusaki, Hiroshi Tanaka, Takayuki Toshima, Kazuyoshi Eshima
  • Patent number: 8607730
    Abstract: An apparatus and method of replacing a liquid of a circulation line in a substrate liquid processing apparatus of a single-wafer type, which can replace the liquid more efficiently, by relating the replacing method with a process-liquid replenishing method. A substrate liquid processing apparatus of a single-wafer type includes: a circulation line through which a process liquid is circulated; a tank disposed in the circulation line; a liquid level sensor disposed in the tank; a liquid replenish part configured to replenish the tank with a new process liquid, based on an output of the liquid level sensor; and a liquid-replacement control part configured to stop the operation of the liquid replenish part based on a predetermined replenish stop condition that is set cooperatively with a predetermined liquid disposal condition, and to discard all the process liquid in the tank based on the predetermined liquid disposal condition.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: December 17, 2013
    Assignee: Tokyo Electron Limited
    Inventor: Kazuyoshi Eshima
  • Patent number: 8590548
    Abstract: Provided is a liquid processing apparatus for a substrate, including a plurality of substrate processing units configured to process the substrate using a processing liquid, a processing liquid generating unit configured to dissolve a gas into a solvent to generate the processing liquid with a predetermined concentration where the processing liquid being supplied to one of the plurality of substrate processing units or being supplied to two or more of the plurality of substrate processing units simultaneously, and a control unit configured to control the plurality of substrate processing units. Also provided are a method for generating the processing liquid and a recording medium storing a program for generating the processing liquid. The liquid processing apparatus generates a processing liquid having a predetermined concentration regardless of the flow rate of the processing liquid used simultaneously.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: November 26, 2013
    Assignee: Tokyo Electron Limited
    Inventor: Kazuyoshi Eshima
  • Patent number: 8408234
    Abstract: A process liquid supply system includes a pure water supply source connected to a process vessel through a supply pipe; a chemical liquid tank that stores a chemical liquid and supplies the chemical liquid stored therein to the supply pipe; and a compressed gas supply source connected to the chemical liquid tank through a compressed gas supply pipe. A pressure adjusting part is disposed on the compressed gas supply pipe at a position between the compressed gas supply source and the chemical liquid tank. The pressure adjusting part is controlled so that the pressure of the compressed gas supplied from the compressed gas supply source to the chemical liquid tank is gradually or stepwise increased after the supply of the chemical liquid from the chemical liquid tank to the supply pipe is started so that the concentration of the processing liquid remains at desired level.
    Type: Grant
    Filed: March 16, 2007
    Date of Patent: April 2, 2013
    Assignee: Tokyo Electron Limited
    Inventors: Keisuke Sasaki, Kazuyoshi Eshima
  • Publication number: 20120063754
    Abstract: Disclosed are a liquid heating unit capable of monitoring the temperature of the liquid storage tank or pipe in which liquid is heated by permeation of the radiated light, a liquid processing apparatus including the same, and a liquid processing method. The liquid heating unit includes: a lamp heater radiating light; a cylindrical member having a cylindrical shape made of material permeating the radiated light configured to insert and penetrate the lamp heater into an internal space; a liquid conduction part placed along an outer periphery of the cylindrical member and configured to heat liquid flowing therein by using the radiated light; a reflection plate covering the liquid conduction part from the outside and reflecting the radiated light; and a first temperature sensor attached to an outer surface of the reflection plate.
    Type: Application
    Filed: August 24, 2011
    Publication date: March 15, 2012
    Inventors: Toshihiko Nishida, Kazuyoshi Eshima, Hisakazu Nakayama
  • Patent number: 8083857
    Abstract: The present invention provides a substrate cleaning method capable of reducing non-uniformity of a removal efficiency of particles between lots with a simple procedure. The substrate cleaning method comprises: a step of supplying a gas into a cleaning tank, while an irradiation of ultrasonic waves to the cleaning liquid in the cleaning tank is being stopped, so as to increase a dissolved gas concentration of the gas dissolved in the cleaning liquid in the cleaning tank to a saturated concentration; and a step of irradiating ultrasonic waves to the cleaning liquid in the cleaning tank so as to clean a substrate immersed in the cleaning liquid in the cleaning tank. In the step of increasing the dissolved gas concentration to the saturated concentration, the gas is supplied to the cleaning tank so as to increase the dissolved gas concentration of the cleaning liquid in the cleaning tank to the saturated concentration.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: December 27, 2011
    Assignee: Tokyo Electron Limited
    Inventors: Tsukasa Watanabe, Naoki Shindo, Kazuyoshi Eshima
  • Publication number: 20110132465
    Abstract: The present invention provides a method of replacing a liquid of a circulation line in a substrate liquid processing apparatus of a single-wafer type, which can replace the liquid more efficiently, by relating the replacing method with a process-liquid replenishing method. A substrate liquid processing apparatus of a single-wafer type includes: a circulation line through which a process liquid is circulated; a tank disposed in the circulation line; a liquid level sensor disposed in the tank; a liquid replenish part configured to replenish the tank with a new process liquid, based on an output of the liquid level sensor; and a liquid-replacement control part configured to stop the operation of the liquid replenish part based on a predetermined replenish stop condition that is set cooperatively with a predetermined liquid disposal condition, and to discard all the process liquid in the tank based on the predetermined liquid disposal condition.
    Type: Application
    Filed: December 2, 2010
    Publication date: June 9, 2011
    Applicant: Tokyo Electron Limited
    Inventor: Kazuyoshi ESHIMA
  • Publication number: 20110079252
    Abstract: Provided is a substrate processing apparatus wherein, even if a trouble occurs, it is bound to continue a process for the substrate without stopping the substrate processing apparatus entirely. The substrate processing apparatus according to the present disclosure includes first and second substrate conveying devices configured to convey wafers, and first and second processing blocks provided on the right and left sides of the substrate conveying device and having processing unit arrays each configured to perform the same process. Processing unit arrays on one side and processing unit arrays on the other side are respectively connected to a processing liquid supply system commonly provided with them. And, when any one of substrate conveying devices, processing liquid supply systems has a problem, the process for the wafer can be performed in the processing unit array to which the substrate conveying device and the processing liquid supply system under normal operation belong.
    Type: Application
    Filed: October 4, 2010
    Publication date: April 7, 2011
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Junya MINAMIDA, Issei UEDA, Yasuhiro CHOUNO, Osamu KURODA, Kazuyoshi ESHIMA, Masahiro YOSHIDA, Satoshi MORITA
  • Publication number: 20110061683
    Abstract: Provided is a liquid processing apparatus for a substrate, including a plurality of substrate processing units configured to process the substrate using a processing liquid, a processing liquid generating unit configured to dissolve a gas into a solvent to generate the processing liquid with a predetermined concentration where the processing liquid being supplied to one of the plurality of substrate processing units or being supplied to two or more of the plurality of substrate processing units simultaneously, and a control unit configured to control the plurality of substrate processing units. Also provided are a method for generating the processing liquid and a recording medium storing a program for generating the processing liquid. The liquid processing apparatus generates a processing liquid having a predetermined concentration regardless of the flow rate of the processing liquid used simultaneously.
    Type: Application
    Filed: September 7, 2010
    Publication date: March 17, 2011
    Applicant: TOKYO ELECTRON LIMITED
    Inventor: Kazuyoshi ESHIMA
  • Publication number: 20110056512
    Abstract: An ultrasonic cleaning apparatus according to the present invention comprises: a plurality of cleaning tanks configured to store a cleaning liquid; an object-to-be-processed holder capable of being inserted into each cleaning tank, the object-to-be-processed holder being configured to hold an object to be processed and to immerse the object to be processed into the cleaning liquid; a vibrator disposed on each cleaning tank; a single ultrasonic oscillator configured to make each vibrator ultrasonically vibrate; an output switch interposed between the ultrasonic oscillator and the vibrator of each respective cleaning tank, the output switch being configured to switch the vibrator that is connected to the ultrasonic oscillator; and a control device configured to control the ultrasonic oscillator and the output switch; wherein the control device controls the ultrasonic oscillator and the output switch such that a timing at which the vibrator of one of the cleaning tanks is made to ultrasonically vibrate, and a ti
    Type: Application
    Filed: September 7, 2010
    Publication date: March 10, 2011
    Applicant: Tokyo Electron Limited
    Inventors: Hideaki SATO, Kazuyoshi Eshima, Hiromi Hara, Hirozumi Hoshino
  • Patent number: 7900640
    Abstract: A cleaning apparatus includes a cleaning tank (2) which stores a process liquid used for cleaning a target object (W), a target object holding mechanism (4) which holds the target object (W) in the cleaning tank (2), and a process liquid supply mechanism (3) which supplies the process liquid to the cleaning tank (2). The target object (W) is immersed in the process liquid in the cleaning tank (2), and is cleaned while letting the process liquid overflow from the cleaning tank (2), thereby cleaning the target object (W). The cleaning apparatus further includes a cover (10) which covers a liquid surface in the cleaning tank (2), a support member (15a, 15b) which supports the cover (10), and a follow-up mechanism (14a, 14b) which moves the cover (10) such that the cover (10) follows the liquid surface while the cover (10) is supported by the support member (15a, 15b).
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: March 8, 2011
    Assignee: Tokyo Electron Limited
    Inventor: Kazuyoshi Eshima
  • Publication number: 20100288313
    Abstract: Disclosed is a cleaning apparatus capable of cleaning a holding unit of a holding member that holds a substrate. The cleaning apparatus is configured to prevent a cleaning liquid from adhering to a rear-end unit of the holding member where a drying is difficult to be done, while a cleaning process is performed by spraying the cleaning liquid to the holding unit. Also disclosed are a substrate processing system that incorporates the cleaning apparatus, a cleaning method based on the cleaning apparatus, a program to perform the cleaning method, and a storage medium to store the program. The cleaning apparatus is equipped with a cleaning unit that cleans the holding unit by spraying the cleaning liquid to the holding unit, and a cover unit that covers the rear-end unit by making a back-and-forth operation with respect to the holding member.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 18, 2010
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Michitaka AMIYA, Kazuyoshi ESHIMA
  • Publication number: 20100043835
    Abstract: A second line 44 is branched from a first line 22 connected to a processing part 10 configured to process a wafer W. A plurality of third lines (an ammonia-water supply line 48, a hydrochloric-acid supply line 52, and a hydrofluoric-acid line 56) are branched from the second line 44. The third lines are respectively provided with valves 48a, 52a, and 56a at locations branched from the second line 44. Chemical-liquid supply sources (an ammonia-water supply source 46, a hydrochloric-acid supply source 50, and a hydrofluoric-acid supply source 54) are connected to the respective third lines, whereby chemical liquids can be supplied from these chemical-liquid supply sources to the respective third lines.
    Type: Application
    Filed: August 24, 2009
    Publication date: February 25, 2010
    Applicant: Tokyo Electron Limited
    Inventors: Kazuyoshi ESHIMA, Keisuke Sasaki, Hiroshi Komiya