Patents by Inventor Yuji Kamikawa

Yuji Kamikawa 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: 20030164179
    Abstract: A cleaning apparatus 1 includes a foup loading/unloading part 2 for mounting foups F each accommodating a plurality of wafers W at intervals of a constant pitch (normal pitch), a rotor 34 capable of holding the wafers W at half the normal pitch (half pitch), a wafer transporting device 11 for transporting the wafer E between the foup F and the rotor 34, wafer posture changing devices 20a, 20b, a wafer elevating mechanism 40, a motor 31 for rotating the rotor 34, an outer chamber 71a and an inner chamber 71b both accommodating the rotor 34, and cleaning liquid nozzles 53, 55 for supplying a cleaning liquid to the wafers W. The rotor 34 holds the wafers W at intervals of an optional pitch (every one holding pitch or every plural holding pitches) to carry out a cleaning operation. Consequently, it is possible to process substrates accommodated in two containers at one batch processing.
    Type: Application
    Filed: February 28, 2003
    Publication date: September 4, 2003
    Applicant: TOKYO ELECTRON LIMITED
    Inventors: Yuji Kamikawa, Shori Mokuo
  • Patent number: 6613692
    Abstract: Semiconductor wafers are cleaned by placing the semiconductor wafers in a processing vessel, forming a pure water film on the surfaces of the wafers, forming an ozonic water film by dissolving ozone gas in the pure water film, and removing resist films formed on the wafers by the agency of the ozonic water film. The pure water film is formed by condensing steam on the surfaces of the wafers. The resist films formed on the surfaces of the wafers can be removed by also using hydroxyl radicals produced by interaction between steam and ozone gas supplied into the processing vessel. Thus, the resist films can be removed highly effectively.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: September 2, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Takayuki Toshima, Kinya Ueno, Miyako Yamasaka, Hideyuki Tsutsumi, Tadashi Iino, Yuji Kamikawa
  • Publication number: 20030159718
    Abstract: A cleaning apparatus and a cleaning method for cleaning a object are provided. In the cleaning apparatus, a drying chamber 42 and a cleaning bath 41 are separated from each other up and down, respectively. Thus, a space in the drying chamber 42 can be insulated from a space of the cleaning bath 41 through rotary doors 59a and a slide door 72. In the cleaning method, a cleaning process in the cleaning bath 41 is carried out while sealing it by the rotary doors 59a. On the other hand, a drying process in the drying chamber 42 is accomplished while sealing and closing it by the slide door 72. Consequently, there is no possibility that, during the drying process, the object is subjected to a bad influence from a chemical treatment.
    Type: Application
    Filed: December 13, 2001
    Publication date: August 28, 2003
    Inventors: Yuji Kamikawa, Satoshi Nakashima, Kinya Ueno
  • Patent number: 6592678
    Abstract: A cleaning equipment generally comprises: a cleaning bath 30 for storing therein a cleaning solution to allow a semiconductor wafer W to be dipped in the cleaning solution to clean the surface of the wafer W; a cleaning solution supply pipe 33 for connecting the cleaning bath 30 to a pure water supply source 31; a chemical storing container 34 for storing therein a chemical; a chemical supply pipe 36 for connecting the cleaning solution supply pipe 33 to the chemical storing container 34 via an injection shut-off valve 35; and a diaphragm pump 37 for injecting a predetermined amount of chemical from the chemical storing container 34 into pure water flowing through the cleaning solution supply pipe 33. The temperature of the cleaning solution in the cleaning bath 30 is detected by, e.g., a temperature sensor 44.
    Type: Grant
    Filed: October 12, 2000
    Date of Patent: July 15, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Yuji Kamikawa, Naoki Shindo, Shigenori Kitahara, Miyako Yamasaka
  • Publication number: 20030127117
    Abstract: A processing apparatus essentially includes a rotatable rotor 21 for carrying semiconductor wafers W, a motor 22 for driving to rotate the rotor 21, a plurality of processing chambers for surrounding the wafers W carried by the rotor 21, for example, an inner chamber 23 and an outer chamber 24, a chemical supplying unit 50, an IPA supplyig unit 60, a rinse supplying unit 70 and a drying fluid supplying unit 80. With this constitution of the apparatus, it is possible to prevent the wafers from being contaminated due to the reaction of treatment liquids of different kinds, with the improvement of processing efficiency and miniaturization of the apparatus.
    Type: Application
    Filed: February 6, 2003
    Publication date: July 10, 2003
    Inventors: Kyouji Kohama, Eiji Shimbo, Yuji Kamikawa, Takayuki Toshima, Hiroki Ohno
  • Patent number: 6589359
    Abstract: A cleaning method is provided for cleaning a semiconductor wafer. In this method, after removing adhering substances from the wafer by using a chemical liquid of organic amine type, there is carried out a pure-water cleaning capable of prevention of electrostatic destruction and alkaline corrosion on the wafer. In detail, it is executed to make a processing chamber have an atmosphere of carbon dioxide and subsequently introduce steam into the chamber to dissolve CO2-gas into the steam. Next, spray the pure water to the wafer. Then, the steam in which CO2-gas is dissolved dissolves in the pure water, so that the pure wafer becomes weak acid, accomplishing the reduction of resistivity of the pure water. Additionally, alkaline substances is neutralized by carbonated water to prevent an alkaline corrosion on a wiring layer on the wafer's surface.
    Type: Grant
    Filed: July 10, 2001
    Date of Patent: July 8, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Yuji Kamikawa, Hiroshi Tanaka
  • Patent number: 6578592
    Abstract: A cleaning system has a movable outer tubular member (26) and a movable inner tubular member (27). A bottom part of the inner tubular (27) is inclined. A first drain pipe (47) is connected to the inner tubular member (27). The first drain pipe (47) has an end part slidably inserted into a second drain pipe (76).
    Type: Grant
    Filed: February 16, 2001
    Date of Patent: June 17, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Yuji Kamikawa, Takehiko Orii, Kyouji Kohama
  • Publication number: 20030106571
    Abstract: An outer covering wall (26) and an inner covering wall (27), which are capable of surrounding a rotor (24), can be horizontally moved. A wafer carrier waiting portion (30) is disposed right below the rotor (24). A wafer holding member (41) included in a wafer lifter (40) moves into a wafer carrier (C) containing wafers (W) and mounted on a stage (31) (sliding table 32) included in the wafer carrier waiting portion (30), lifts up the wafers (W) and transfers the wafers (W) to the rotor (24). The outer covering wall (26) or the inner covering wall (27) surrounds the rotor (24) to define a processing chamber. The wafers (W) held on the rotor (24) are subjected to a cleaning process in the processing chamber.
    Type: Application
    Filed: January 23, 2003
    Publication date: June 12, 2003
    Inventors: Yuji Kamikawa, Kouji Egashira, Koji Tanaka
  • Patent number: 6575178
    Abstract: An enclosure 23A that defines a drying chamber 23 is configured of a pair of enclosing elements 23c and 23d and a base element 23b. When wafers enter or leave the drying chamber 23, the enclosing elements 23c and 23d are lifted upward by vertical air cylinders 42 to separate them from the base element 23b. The enclosing elements 23c and 23d are then moved in directions that mutually separate them. To dry wafers within the drying chamber 23, the enclosing elements and the base element 23b are mutually engaged to form a hermetic seal, in the opposite sequence. The present invention reduces the dimensions of the drying chamber without impeding the work of moving wafers into and out of the drying chamber. This makes it possible to reduce the internal volume of the drying chamber, achieving a reduction is the consumption of drying gas, an improvement in the drying efficiency, and a reduction in overall size of the apparatus.
    Type: Grant
    Filed: October 16, 2000
    Date of Patent: June 10, 2003
    Assignee: Tokyo Electron Limited
    Inventor: Yuji Kamikawa
  • Publication number: 20030084929
    Abstract: The present invention provides a substrate processing system and method which can prevent the filter from being stuffed with foreign objects and make the filter accordingly more durable.
    Type: Application
    Filed: November 1, 2002
    Publication date: May 8, 2003
    Inventors: Yuji Kamikawa, Eiichi Mukai
  • Patent number: 6536452
    Abstract: A processing apparatus essentially includes a rotatable rotor 21 for carrying semiconductor wafers W, a motor 22 for driving to rotate the rotor 21, a plurality of processing chambers for surrounding the wafers W carried by the rotor 21, for example, an inner chamber 23 and an outer chamber 24, a chemical supplying unit 50, an IPA supplying unit 60, a rinse supplying unit 70 and a drying fluid supplying unit 80. With this constitution of the apparatus, it is possible to prevent the wafers from being contaminated due to the reaction of treatment liquids of different kinds, with the improvement of processing efficiency and miniaturization of the apparatus.
    Type: Grant
    Filed: April 27, 2000
    Date of Patent: March 25, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Kyouji Kohama, Eiji Shimbo, Yuji Kamikawa, Takayuki Toshima, Hiroki Ohno
  • Patent number: 6532975
    Abstract: An outer covering wall (26) and an inner covering wall (27), which are capable of surrounding a rotor (24), can be horizontally moved. A wafer carrier waiting portion (30) is disposed right below the rotor (24). A wafer holding member (41) included in a water lifter (40) moves into a wafer carrier (C) containing wafers (W) and mounted on a stage (31) (sliding table 32) included in the wafer carrier waiting portion (30), lifts up the wafers (W) and transfers the wafers (W) to the rotor (24). The outer covering wall (26) or the inner covering wall (27) surrounds the rotor (24) to define a processing chamber. The wafers (W) held on the rotor (24) are subjected to a cleaning process in the processing chamber.
    Type: Grant
    Filed: August 11, 2000
    Date of Patent: March 18, 2003
    Assignee: Tokyo Electron Limited
    Inventors: Yuji Kamikawa, Kouji Egashira, Koji Tanaka
  • Patent number: 6510859
    Abstract: A small-sized cleaning and drying apparatus is provided. Without generating particles, hydrogen gas, etc., the apparatus easily generates an ozone water to form an oxidation film on an object to be processed. The apparatus includes a cleaning part 1 for washing semiconductor wafers W and a drying part 2 for drying the wafers W. The cleaning part 1 is formed by a processing bath 10 storing a chemical liquid or a rinsing liquid. The processing bath 10 is communicated with a chemical source 17 and a pure water source 15 through a rinsing liquid pipeline 14 interposing an ozone water generating unit 21. After completing both chemical treatment and rinsing, it is possible to form the oxidation Elms on respective surfaces of the wafers W and dry them.
    Type: Grant
    Filed: July 13, 2000
    Date of Patent: January 28, 2003
    Assignee: Tokyo Electron Limited
    Inventor: Yuji Kamikawa
  • Patent number: 6495215
    Abstract: A substrate processing method and a substrate processing apparatus are provided to remove a processing liquid from a substrate without using an organic solvent. Upon completion of liquid treatment to dip the substrate W in the processing liquid 30, when exposing a substrate W out of a processing liquid 30 for its removal, the liquid 30 is subjected to an electric field to generate an electric current on the liquid surface and also a magnetic field B. With the arrangement of the electric field and the magnetic field, an electromagnetic force F is produced and applied on the liquid 30 in a direction to leave from a surface of the substrate W.
    Type: Grant
    Filed: May 25, 2000
    Date of Patent: December 17, 2002
    Assignee: Tokyo Electron Limited
    Inventor: Yuji Kamikawa
  • Patent number: 6491045
    Abstract: A method for cleaning an object to be processed in which the atmosphere in a drying chamber is replaced by an inert gas prior to placing an object to be cleaned from an external environment into the chamber. The object is then transported by an elongated retaining member from the drying chamber through a lower opening in the chamber into a processing bath disposed below the chamber. The object is then cleaned in the processing bath. The object is then transported from the processing bath to the drying chamber where it is dried by filling the atmosphere of the drying chamber with organic solvent. The cleaning process in the cleaning bath is carried out while the bath is screened by a nitrogen-gas curtain. The method also includes opening a lid of the chamber prior to insertion of the object into the chamber and closing the lid after insertion of the object, as well as the opening and closing of the lower opening in the chamber.
    Type: Grant
    Filed: October 5, 2001
    Date of Patent: December 10, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Yuji Kamikawa, Kinya Ueno, Satoshi Nakashima
  • Publication number: 20020170571
    Abstract: A rotary substrate processing apparatus includes a rotor 1 having a holding member for holding a plurality of semiconductor wafers W arranged at appropriate intervals and a motor 4 for rotating the rotor 1. The holding member includes open/close holding rods 3 that are moved to open or close the rotor 1 in inserting the wafers W into the rotor 1 sideways and a plurality of constant-position holding rods 2a to 2d for holding the wafers W in cooperation with the open/close holding rods 3. Among the constant-position holding rods 2a to 2d, at least one constant-position holding rod 2a is equipped with a plurality of press members 5 which move toward respective peripheral portions of the wafers W. by centrifugal force due to the rotation of the rotor 1. Consequently, it becomes possible to make the wafers W follow the rotation of the rotor 1 ensurely and also possible to reduce slip between the open/close holding rods 3, the constant-position holding rods 2a to 2d and the wafers W.
    Type: Application
    Filed: May 21, 2002
    Publication date: November 21, 2002
    Inventors: Koji Egashira, Sadayuki Fujishima, Yuji Kamikawa
  • Patent number: 6435199
    Abstract: In an apparatus for treating semiconductor wafers, a plurality of chemical treatment tanks 21a to 21c filled with treatment liquids for processing semiconductor wafers W and a plurality of rinse treatment tanks 22a to 22c filled with rinse liquids for rinsing the semiconductor wafers W are disposed in a direction across the direction of conveyance of a wafer holder conveyor carriage 5, such as a direction perpendicular thereto. A transportation device provided with a wafer boat 14 is disposed at a position in the vicinity of the chemical treatment tanks 21a to 21c and the rinse treatment tanks 22a to 22c, to transfer the wafers W to and from the wafer holder conveyor carriage 5 and also transport the thus transferred wafers W to the chemical treatment tanks 21a to 21c and the rinse treatment tanks 22a to 22c. This configuration makes it possible to reduce the size of the treatment apparatus and also improve the processing efficiency thereof.
    Type: Grant
    Filed: April 19, 2000
    Date of Patent: August 20, 2002
    Assignee: Tokyo Electron Limited
    Inventor: Yuji Kamikawa
  • Patent number: 6413355
    Abstract: A cleaning apparatus and a cleaning method for cleaning an object are provided. In the cleaning apparatus, a drying chamber 42 and a cleaning bath 41 are separated from each other up and down, respectively. Thus, a space in the drying chamber 42 can be insulated from a space of the cleaning bath 41 through a slide door 72. In the cleaning method, a drying process and a cleaning process are carried out separately on condition that the space in the drying chamber 42 is insulated from the space of the cleaning bath 41 through the slide door 72. Consequently, there is no possibility that, during the drying process, the object is subjected to a bad influence from a chemical treatment.
    Type: Grant
    Filed: September 24, 1997
    Date of Patent: July 2, 2002
    Assignee: Tokyo Electron Limited
    Inventors: Yuji Kamikawa, Satoshi Nakashima, Kinya Ueno
  • Publication number: 20020078980
    Abstract: There is provided a system in which transportation, assembly and maintenance can be easily carried out. The system comprises: a case carrying unit for carrying in/out a case accommodating therein the substrate; a liquid-processing unit and the processing liquid being supplied to process the substrate with the processing liquid; a substrate conveying unit for conveying the substrate between the case carrying unit and the liquid-processing unit; a processing liquid storing unit for storing, feeding and recovering the processing liquid which is supplied to the liquid-processing unit; and a plurality of frames each supporting one or more of the case carrying unit, the liquid-processing unit, the substrate conveying unit and the processing liquid storing unit, wherein the at least two of the plurality of frames are capable of being connected to and separated from each other.
    Type: Application
    Filed: December 21, 2001
    Publication date: June 27, 2002
    Inventor: Yuji Kamikawa
  • Publication number: 20020073576
    Abstract: A cleaning processing apparatus of wafers W held by a rotor capable of holding a plurality of wafers W, which is one embodiment of the liquid processing apparatus of the present invention, comprises an outside chamber, an inside chamber arranged slidable between a process position and a retreat position, and a cleaning mechanism for cleaning the inside chamber in the retreat position. The cleaning mechanism includes a cylindrical body arranged in the inside chamber so as to form a substantially cylindrical cleaning processing space between the inside chamber and the cylindrical body, a cleaning liquid spurting nozzle for spurting a cleaning liquid into the cleaning processing space, and a gas supply nozzle for supplying a predetermined drying gas into the cleaning processing space so as to make it possible to clean and dry the inside chamber.
    Type: Application
    Filed: December 14, 2001
    Publication date: June 20, 2002
    Inventors: Yuji Kamikawa, Taichi Sakaguchi