Patents by Inventor Masaei Suwada

Masaei Suwada 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: 6899507
    Abstract: Semiconductor processing equipment that has increased efficiency, throughput, and stability, as well as reduced operating cost, footprint, and faceprint is provided. Other than during deposition, the atmosphere of both the reaction chamber and the transfer chamber are evacuated using the transfer chamber exhaust port, which is located below the surface of the semiconductor wafer. This configuration prevents particles generated during wafer transfer or during deposition from adhering to the surface of the semiconductor wafer. Additionally, by introducing a purge gas into the transfer chamber during deposition, and by using an insulation separating plate 34, the atmospheres of the transfer and reaction chambers can be effectively isolated from each other, thereby preventing deposition on the walls and components of the transfer chamber.
    Type: Grant
    Filed: February 8, 2002
    Date of Patent: May 31, 2005
    Assignee: ASM Japan K.K.
    Inventors: Takayuki Yamagishi, Masaei Suwada, Takeshi Watanabe
  • Patent number: 6662817
    Abstract: A gas-line system used for a semiconductor-manufacturing apparatus with at least two reactors, includes at least one gas source; a flow-divider means including an input port on the primary side, which receives a source gas from the gas source, and an output port on the secondary side, which outputs an inputted source gas by equally distributing it. The input port on the primary side is connected with the gas source and the output port on the secondary side is connected with the reactors; and one exhaust pump for exhausting gases within the reactors, which is connected with the reactors. It is desirable that the gas-line system is provided between the reactors and the exhaust pump, and an APC is included for controlling pressure for each reactor.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: December 16, 2003
    Assignee: ASM Japan K.K.
    Inventors: Takayuki Yamagishi, Masaei Suwada
  • Patent number: 6630053
    Abstract: A compact single-wafer-processing semiconductor-manufacturing apparatus for processing semiconductor substrates is characterized in that at least two units, each of which comprises a reactor for growing a film on a semiconductor substrate and a load lock chamber for having the semiconductor substrate wait in a vacuum and which is directly connected with the reactor via a gate valve, are modularized and these modularized reactor units can be configured as a cluster through an atmospheric front end (AFE). Inside the load lock chamber, a substrate transfer mechanism comprising a thin link arm for transferring a semiconductor substrate into the reactor is provided.
    Type: Grant
    Filed: August 17, 2001
    Date of Patent: October 7, 2003
    Assignee: ASM Japan K.K.
    Inventors: Takayuki Yamagishi, Masaei Suwada, Takeshi Watanabe
  • Publication number: 20030168948
    Abstract: The equipment comprises a semiconductor-processing device in which a load-lock chamber, a transfer chamber and a reaction chamber are modularized into, a main frame, a stand-alone chamber frame on which the semiconductor-processing device is placed, a sliding mechanism for enabling attaching/removing of the chamber frame to/from the main frame smoothly, and a positioning mechanism for fixing a position of the chamber frame. This enables the processing device to be attached and removed at will. The method comprises pulling out from the main frame the chamber frame, on which the modularized semiconductor-processing device is placed; forming a maintenance space inside the main frame; maintaining the semiconductor-processing device and peripherals attached in the vicinity of the main frame, and putting the chamber frame with the processing device back into the main frame.
    Type: Application
    Filed: February 20, 2003
    Publication date: September 11, 2003
    Inventors: Takayuki Yamagishi, Takeshi Watanabe, Masaei Suwada
  • Publication number: 20030152445
    Abstract: Semiconductor processing equipment that has increased efficiency, throughput, and stability, as well as reduced operating cost, footprint, and faceprint is provided. Other than during deposition, the atmosphere of both the reaction chamber and the transfer chamber are evacuated using the transfer chamber exhaust port, which is located below the surface of the semiconductor wafer. This configuration prevents particles generated during wafer transfer or during deposition from adhering to the surface of the semiconductor wafer. Additionally, by introducing a purge gas into the transfer chamber during deposition, and by using an insulation separating plate 34, the atmospheres of the transfer and reaction chambers can be effectively isolated from each other, thereby preventing deposition on the walls and components of the transfer chamber.
    Type: Application
    Filed: February 8, 2002
    Publication date: August 14, 2003
    Inventors: Takayuki Yamagishi, Masaei Suwada, Takeshi Watanabe
  • Publication number: 20020038669
    Abstract: A gas-line system used for a semiconductor-manufacturing apparatus with at least two reactors, includes at least one gas source; a flow-divider means including an input port on the primary side, which receives a source gas from the gas source, and an output port on the secondary side, which outputs an inputted source gas by equally distributing it. The input port on the primary side is connected with the gas source and the output port on the secondary side is connected with the reactors; and one exhaust pump for exhausting gases within the reactors, which is connected with the reactors. Tt is desirable that the gas-line system is provided between the reactors and the exhaust pump, and an APC is included for controlling pressure for each reactor.
    Type: Application
    Filed: September 28, 2001
    Publication date: April 4, 2002
    Inventors: Takayuki Yamagishi, Masaei Suwada
  • Publication number: 20020036065
    Abstract: A compact single-wafer-processing semiconductor-manufacturing apparatus for processing semiconductor substrates is characterized in that at least two units, each of which comprises a reactor for growing a film on a semiconductor substrate and a load lock chamber for having the semiconductor substrate wait in a vacuum and which is directly connected with the reactor via a gate valve, are modularized and these modularized reactor units can be configured as a cluster through an atmospheric front end (AFE). Inside the load lock chamber, a substrate transfer mechanism comprising a thin link arm for transferring a semiconductor substrate into the reactor is provided.
    Type: Application
    Filed: August 17, 2001
    Publication date: March 28, 2002
    Inventors: Takayuki Yamagishi, Masaei Suwada, Takeshi Watanabe
  • Patent number: 6305898
    Abstract: A transfer mechanism is provided for placing a wafer at a prescribed position on an arm without any additional step. The transfer mechanism for transferring a workpiece into and from a storage section comprises an arm member for holding a workpiece having a projection which can be contacted with an edge of the workpiece at the tip end portion thereof, a movement mechanism for reciprocating the arm member between a retracted and an extended positions while holding the workpiece thereon to transfer the workpiece to and from the storage section, and a positioning member which is positioned in the vicinity of the arm member and can be contacted with the edge of the workpiece for positioning the held workpiece in a prescribed position on the arm member.
    Type: Grant
    Filed: July 16, 1999
    Date of Patent: October 23, 2001
    Assignee: ASM Japan K.K.
    Inventors: Takayuki Yamagishi, Masaei Suwada, Kazunori Furukawara