Patents by Inventor Jeffry A. Davis
Jeffry A. Davis 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).
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Patent number: 8028978Abstract: A semiconductor wafer processing system has a carrier including wafer slots. A process robot engages the carrier and installs the carrier into a rotor within a process chamber. The rotor has a tapered or stepped inside surface matching a tapered or stepped outside surface of the carrier. Wafer retainers on the carrier pivot to better secure wafers within the carrier.Type: GrantFiled: March 25, 2003Date of Patent: October 4, 2011Assignee: Semitool, Inc.Inventors: Gordon R. Nelson, Jeffry A. Davis, Raymon F. Thompson, Eric J. Bergman
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Patent number: 7278813Abstract: An automated processing system has an indexer bay perpendicularly aligned with a process bay within a clean air enclosure. An indexer in the indexer bay provides stocking or storage for work in progress wafers or articles. Process chambers are located in the process bay. A transfer robot moves wafers from a pod unsealed at a docking station into a carrier at a transfer station. The carrier has tapered or stepped outside surfaces engaging corresponding inside surfaces on a rotor within a process chamber. A process robot moves between the indexer bay and process bay to carry wafers to and from the process chambers. The process robot has a robot arm vertically moveable along a lift rail. Wafers are carried offset from the robot arm, to better avoid contamination. The automated system is compact and requires less clean room floor space.Type: GrantFiled: December 30, 2002Date of Patent: October 9, 2007Assignee: Semitool, Inc.Inventors: Jeffry A. Davis, Gordon Ray Nelson, Daniel P. Bexten
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Patent number: 6942738Abstract: An automated semiconductor processing system has an indexer bay perpendicularly aligned with a process bay within a clean air enclosure. An indexer in the indexer bay provides stocking or storage for work in progress semiconductor wafers. Process chambers are located in the process bay. A process robot moves between the indexer bay and process bay to carry semi-conductor wafers to and from the process chambers. The process robot has a robot arm vertically moveable along a lift rail. Semiconductor wafers are carried offset from the robot arm, to better avoid contamination. The automated system is compact and requires less clean room floor space.Type: GrantFiled: July 7, 2000Date of Patent: September 13, 2005Assignee: Semitool, Inc.Inventors: Gordon Ray Nelson, Daniel P. Bexten, Jeffry A. Davis
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Patent number: 6900132Abstract: A system for processing semiconductor wafers has process units on a deck of a frame. The process units and the deck have precision locating features, such as tapered pins, for precisely positioning the process units on the deck. Process units can be removed and replacement process units installed on the deck, without the need for recalibrating the load/unload robot. This reduces the time needed to replace process units and restart processing operations. Liquid chemical consumption during processing is reduced by drawing unused liquid out of supply lines and pumping it back to storage.Type: GrantFiled: October 22, 2003Date of Patent: May 31, 2005Assignee: Semitool, Inc.Inventors: Raymon F. Thompson, Jeffry A. Davis, Randy Harris, Dana R. Scranton, Ryan Pfeifle, Steven A. Peace, Brian Aegerter
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Patent number: 6799932Abstract: A processor for processing articles, such as semiconductor wafers, in a substantially clean atmosphere is set forth. The processor includes an enclosure defining a substantially enclosed clean processing chamber and at least one processing station disposed in the processing chamber. An interface section is disposed adjacent an interface end of the enclosure. The interface section includes at least one interface port through which a pod containing articles for processing are loaded or unloaded to or from the processor. The interface section is hygienically separated from the processing chamber since the interface section is generally not as clean as the highly hygienic processing chamber. An article extraction mechanism adapted to seal with the pod is employed. The mechanism is disposed to allow extraction of the articles contained within the pod into the processing chamber without exposing the articles to ambient atmospheric conditions in the interface section.Type: GrantFiled: June 9, 2003Date of Patent: October 5, 2004Assignee: Semitool, Inc.Inventors: Jeffry A. Davis, Kert L. Dolechek, Gary L. Curtis
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Publication number: 20040112738Abstract: A system for processing semiconductor wafers has process units on a deck of a frame. The process units and the deck have precision locating features, such as tapered pins, for precisely positioning the process units on the deck. Process units can be removed and replacement process units installed on the deck, without the need for recalibrating the load/unload robot. This reduces the time needed to replace process units and restart processing operations. Liquid chemical consumption during processing is reduced by drawing unused liquid out of supply lines and pumping it back to storage.Type: ApplicationFiled: October 22, 2003Publication date: June 17, 2004Inventors: Raymon F. Thompson, Jeffry A. Davis, Randy Harris, Dana R. Scranton, Ryan Pfeifle, Steven L. Peace, Brian Aegerter
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Patent number: 6736148Abstract: An automated semiconductor processing system has an indexer bay perpendicularly aligned with a process bay within a clean air enclosure. An indexer in the indexer bay provides stocking or storage for work in progress semiconductor wafers. Process chambers are located in the process bay. A process robot moves between the indexer bay and process bay to carry semi-conductor wafers to and from the process chambers. The process robot has a robot arm vertically moveable along a lift rail. Semiconductor wafers are carried offset from the robot arm, to better avoid contamination. The automated system is compact and requires less clean room floor space.Type: GrantFiled: May 22, 2001Date of Patent: May 18, 2004Assignee: Semitool, Inc.Inventors: Jeffry A. Davis, Kevin P. Meyer, Kert L. Dolechek
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Patent number: 6723174Abstract: An automated semiconductor processing system has an indexer bay perpendicularly aligned with a process bay within a clean air enclosure. An indexer in the indexer bay provides stocking or storage for work in progress semiconductor wafers. Process chambers are located in the process bay: A process robot moves between the indexer bay and process bay to carry semi-conductor wafers to and from the process chambers. The process robot has a robot arm vertically moveable along a lift rail. Semiconductor wafers are carried offset from the robot arm, to better avoid contamination. The automated system is compact and requires less clean room floor space.Type: GrantFiled: June 5, 2002Date of Patent: April 20, 2004Assignee: Semitool, Inc.Inventors: Gordon Ray Nelson, Daniel P. Bexten, Jeffry A. Davis
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Patent number: 6652219Abstract: A processor for processing articles, such as semiconductor wafers, includes an enclosure defining a substantially enclosed clean processing chamber and at least one processing station disposed in the processing chamber. An interface section is disposed adjacent an interface end of the enclosure. The interface section includes at least one interface port through which a pod containing articles for processing are loaded or unloaded to or from the processor. An article extraction mechanism adapted to seal with the pod removes articles from the pod without exposing the articles to ambient atmospheric conditions in the interface section. The article processor also preferably includes an article insertion mechanism adapted to seal with a pod in the interface section. The article insertion mechanism allows insertion of the articles into the pod after processing by at least one processing station.Type: GrantFiled: July 25, 2002Date of Patent: November 25, 2003Assignee: Semitool, Inc.Inventors: Jeffry A. Davis, Kert L. Dolechek, Gary L. Curtis
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Publication number: 20030209404Abstract: An automated processing system has an indexer bay perpendicularly aligned with a process bay within a clean air enclosure. An indexer in the indexer bay provides stocking or storage for work in progress wafers or articles. Process chambers are located in the process bay. A transfer robot moves wafers from a pod unsealed at a docking station into a carrier at a transfer station. The carrier has tapered or stepped outside surfaces engaging corresponding inside surfaces on a rotor within a process chamber. A process robot moves between the indexer bay and process bay to carry wafers to and from the process chambers. The process robot has a robot arm vertically moveable along a lift rail. Wafers are carried offset from the robot arm, to better avoid contamination. The automated system is compact and requires less clean room floor space.Type: ApplicationFiled: December 30, 2002Publication date: November 13, 2003Inventors: Jeffry A. Davis, Gordon Ray Nelson, Daniel P. Bexten
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Publication number: 20030198541Abstract: A processor for processing articles, such as semiconductor wafers, in a substantially clean atmosphere is set forth. The processor includes an enclosure defining a substantially enclosed clean processing chamber and at least one processing station disposed in the processing chamber. An interface section is disposed adjacent an interface end of the enclosure. The interface section includes at least one interface port through which a pod containing articles for processing are loaded or unloaded to or from the processor. The interface section is hygienically separated from the processing chamber since the interface section is generally not as clean as the highly hygienic processing chamber. An article extraction mechanism adapted to seal with the pod is employed. The mechanism is disposed to allow extraction of the articles contained within the pod into the processing chamber without exposing the articles to ambient atmospheric conditions in the interface section.Type: ApplicationFiled: June 9, 2003Publication date: October 23, 2003Applicant: Semitool, Inc.Inventors: Jeffry A. Davis, Kert L. Dolechek, Gary L. Curtis
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Publication number: 20030188447Abstract: A semiconductor wafer processing system has a carrier including wafer slots. A process robot engages the carrier and installs the carrier into a rotor within a process chamber. The rotor has a tapered or stepped inside surface matching a tapered or stepped outside surface of the carrier. Wafer retainers on the carrier pivot to better secure wafers within the carrier.Type: ApplicationFiled: March 25, 2003Publication date: October 9, 2003Applicant: Semitool, Inc.Inventors: Gordon R. Nelson, Jeffry A. Davis, Raymon F. Thompson, Eric J. Bergman
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Patent number: 6599075Abstract: A processor for processing articles, such as semiconductor wafers, in a substantially clean atmosphere is set forth. The processor includes an enclosure defining a substantially enclosed clean processing chamber and at least one processing station disposed in the processing chamber. An interface section is disposed adjacent an interface end of the enclosure. The interface section includes at least one interface port through which a pod containing articles for processing are loaded or unloaded to or from the processor. The interface section is hygienically separated from the processing chamber since the interface section is generally not as clean as the highly hygienic processing chamber. An article extraction mechanism adapted to seal with the pod is employed. The mechanism is disposed to allow extraction of the articles contained within the pod into the processing chamber without exposing the articles to ambient atmospheric conditions in the interface section.Type: GrantFiled: June 25, 2002Date of Patent: July 29, 2003Assignee: Semitool, Inc.Inventors: Jeffry A. Davis, Kert L. Dolechek, Gary L. Curtis
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Publication number: 20030002961Abstract: A processor for processing articles, such as semiconductor wafers, includes an enclosure defining a substantially enclosed clean processing chamber and at least one processing station disposed in the processing chamber. An interface section is disposed adjacent an interface end of the enclosure. The interface section includes at least one interface port through which a pod containing articles for processing are loaded or unloaded to or from the processor. An article extraction mechanism adapted to seal with the pod removes articles from the pod without exposing the articles to ambient atmospheric conditions in the interface section. The article processor also preferably includes an article insertion mechanism adapted to seal with a pod in the interface section. The article insertion mechanism allows insertion of the articles into the pod after processing by at least one processing station.Type: ApplicationFiled: July 25, 2002Publication date: January 2, 2003Applicant: Semitool, Inc.Inventors: Jeffry A. Davis, Kert L. Dolechek, Gary L. Curtis
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Publication number: 20020164232Abstract: A processor for processing articles, such as semiconductor wafers, in a substantially clean atmosphere is set forth. The processor includes an enclosure defining a substantially enclosed clean processing chamber and at least one processing station disposed in the processing chamber. An interface section is disposed adjacent an interface end of the enclosure. The interface section includes at least one interface port through which a pod containing articles for processing are loaded or unloaded to or from the processor. The interface section is hygienically separated from the processing chamber since the interface section is generally not as clean as the highly hygienic processing chamber. An article extraction mechanism adapted to seal with the pod is employed. The mechanism is disposed to allow extraction of the articles contained within the pod into the processing chamber without exposing the articles to ambient atmospheric conditions in the interface section.Type: ApplicationFiled: June 25, 2002Publication date: November 7, 2002Applicant: Semitool, Inc.Inventors: Jeffry A. Davis, Kert L. Dolechek, Gary L. Curtis
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Publication number: 20020150449Abstract: An automated semiconductor processing system has an indexer bay perpendicularly aligned with a process bay within a clean air enclosure. An indexer in the indexer bay provides stocking or storage for work in progress semiconductor wafers. Process chambers are located in the process bay: A process robot moves between the indexer bay and process bay to carry semi-conductor wafers to and from the process chambers. The process robot has a robot arm vertically moveable along a lift rail. Semiconductor wafers are carried offset from the robot arm, to better avoid contamination. The automated system is compact and requires less clean room floor space.Type: ApplicationFiled: June 5, 2002Publication date: October 17, 2002Applicant: Semitool, Inc.Inventors: Gordon Ray Nelson, Daniel P. Bexten, Jeffry A. Davis
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Patent number: 6454514Abstract: A workpiece support and an apparatus including such a workpiece support are set forth. The workpiece support includes a set of grooved members for supporting a series of workpieces. The workpieces may be similarly shaped, e.g. circular or rectangular, and similarly sized, each having a front face and a back face. An outer perimeter of each workpiece may be beveled at both faces, beveled at one face, unbeveled, convex, or concave. Each grooved member has a series of similar grooves. Being adapted to receive such a workpiece, each groove has a bearing wall and a wedging wall shaped and oriented so that a line normal to the wedging wall intersects but is not normal to the bearing wall. For many applications, two grooved members are employed, which are parallel to one another, spaced from one another, and oriented so that the grooves of the grooved members are generally aligned.Type: GrantFiled: August 11, 1999Date of Patent: September 24, 2002Assignee: Semitool, Inc.Inventor: Jeffry A. Davis
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Patent number: 6447232Abstract: A processor for processing articles, such as semiconductor wafers, in a substantially clean atmosphere is set forth. The processor includes an enclosure defining a substantially enclosed clean processing chamber and at least one processing station disposed in the processing chamber. An interface section is disposed adjacent an interface end of the enclosure. The interface section includes at least one interface port through which a pod containing articles for processing are loaded or unloaded to or from the processor. The interface section is hygienically separated from the processing chamber since the interface section is generally not as clean as the highly hygienic processing chamber. An article extraction mechanism adapted to seal with the pod is employed. The mechanism is disposed to allow extraction of the articles contained within the pod into the processing chamber without exposing the articles to ambient atmospheric conditions in the interface section.Type: GrantFiled: December 19, 1997Date of Patent: September 10, 2002Assignee: Semitool, Inc.Inventors: Jeffry A. Davis, Kert L. Dolechek, Gary L. Curtis
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Publication number: 20020051699Abstract: A processor has a door system for opening and closing a process chamber. The door system includes a closure plate on an actuator supported by a mounting plate. The actuator moves the closure plate into engagement with an open front end of the chamber, to seal the chamber. Lift actuators raise and lower the mounting plate carrying the closure plate between a loading position and a chamber engagement position. The mounting plate has a center section supporting the closure plate actuator, and narrower legs extending from the center section to the lift actuators. A separate door cover is attached to the mounting plate. Visual inspection of the alignment of the closure plate and chamber is improved, better facilitating manufacture and maintenance of the processor. The lift actuators preferably have a piston within a cylinder magnetically coupled to the mounting plate, to reduce or eliminate leakage from the cylinders.Type: ApplicationFiled: July 13, 2001Publication date: May 2, 2002Inventors: Gordon Nelson, Jeffry A. Davis
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Publication number: 20020044855Abstract: An automated semiconductor processing system has an indexer bay perpendicularly aligned with a process bay within a clean air enclosure. An indexer in the indexer bay provides stocking or storage for work in progress semiconductor wafers. Process chambers are located in the process bay. A process robot moves between the indexer bay and process bay to carry semi-conductor wafers to and from the process chambers. The process robot has a robot arm vertically moveable along a lift rail. Semiconductor wafers are carried offset from the robot arm, to better avoid contamination. The automated system is compact and requires less clean room floor space.Type: ApplicationFiled: August 17, 2001Publication date: April 18, 2002Inventor: Jeffry A. Davis