Axcelis Technologies, Inc.

Other

Eaton Corporation

Axcelis Technology, Inc.

Btsystems, LLC

Allan D Weed

William Davis Lee

Ashwin Madhukar Purohit

Robert D Rathmell

Steven Dana Weed

Perry J I Justesen

Gary M Cook

Alexander H Slocum, Jr

Victor M Benveniste

Robert J Mitchell

Roger Bradford Fish

Joseph Daniel Gillespie

Ernest E Allen

Michel Pharand

Richard Gueler

Alexander F Pless

Perry J Justesen

Brian C Weed

Gary J Rosen

An electrostatic chuck for clamping workpieces having differing diameters is provided. A central electrostatic chuck member associated with a first workpiece and a first peripheral electrostatic chuck member associated with a second workpiece are provided. An elevator translates the first peripheral electrostatic chuck member with respect to central electrostatic chuck member between a retracted position and an extended position. In the retracted position, the first workpiece contacts only the first surface. In the extended position, the second workpiece contacts the first surface and the second surface. A first peripheral shield generally shields the second surface when the first peripheral electrostatic chuck member is in the retracted position. Additional peripheral electrostatic chuck members and peripheral shields can be added to accommodate additional workpiece diameters.

Adjustable circumference electrostatic clamp

An electrostatic chuck and gripping system are configured for clamping and processing workpieces having differing diameters. An ion implantation apparatus selectively provides ions to a first workpiece and a second workpiece in a process chamber, where a diameter of the first workpiece is greater the second workpiece. A chuck supports the respective first or second workpiece within the process chamber during exposure to the ions. A load lock chamber isolates a process environment from an external environment and has a workpiece support for the respective first or second workpiece during a transfer of the first or second workpiece between the process chamber and the external environment. A vacuum robot transfers the first or second workpiece between the chuck and workpiece support, and has a gripper mechanism configured to selectively grip the first or second workpiece between a plurality of stepped guides.

Multiple diameter in-vacuum wafer handling

An electrostatic clamp is provided, having a clamping plate, wherein a clamping surface of the clamping plate is configured to contact the workpiece. A voltage applied to one or more electrodes selectively electrostatically attracts the workpiece to the clamping surface. One or more auxiliary clamping members are further provided wherein the one or more auxiliary clamping members are configured to selectively secure at least a portion of the workpiece to the clamping surface. A temperature monitoring device configured to determine a temperature of the workpiece is provided, and a controller is configured to selectively clamp the workpiece to the clamping surface via a control of the voltage to the one or more electrodes and the one or more auxiliary clamping members, based, at least in part, on the temperature of the workpiece.

Heated electrostatic chuck including mechanical clamp capability at high temperature

A clamping device and method is provided for securing first and second workpieces having different sizes to a clamping device and providing thermal conditioning thereto. An electrostatic clamping plate having a diameter associated with the first workpiece surrounds a central portion of the clamp. A non-electrostatic central portion provides a heater within the annulus, wherein the central portion has a diameter associated with the second workpiece. A workpiece carrier is provided, wherein the workpiece carrier is configured to hold the second workpiece above the heater, and wherein a diameter of the workpiece carrier is associated with the electrostatic clamping plate annulus. The annulus selectively electrostatically clamps the workpiece carrier or a circumferential portion of the first workpiece to its clamping surface, therein selectively maintaining a position of the first or second workpiece with respect to the annulus or non-electrostatic central portion.

Heated annulus chuck

A bin transporter system is used for moving bins or trays from the exit end of a security checkpoint conveyor to the entrance end of the conveyor. The system includes one or more support stands and a roller assembly attached to the stands. The roller assembly includes an elongate bin guide and roller conveyors attached to the inside of the bin guide. The roller assembly is held in a longitudinally inclined orientation, for gravity-actuated movement of the bin along the bin guide, as facilitated by the roller conveyors. Additionally, when bins are placed in the bin guide against the roller conveyors for movement along the bin guide, the bins lie at a laterally tilted orientation, either generally horizontally or generally vertically. This prevents the bins from falling out the front of the roller assembly, in cases where the bin guide has an open front portion.

Bin transporter system

A gripper for use with a robot includes a support body for removably attaching the gripper to a moveable arm and a workpiece contact body having a groove extending along at least a portion of the contact body for engaging a curved outer edge of the workpiece. A coupling member connects the support body to the workpiece contact member and includes a flexure component that flexes to allow radial and/or tangential relative movement of the workpiece contact body with respect to the support body to diminish slippage between the workpiece and the contact body as the gripper engages the workpiece.

Workpiece gripping device

A transfer system for use with a tool for treating a work-piece at sub-atmospheric pressure such as an ion implanter for implanting silicon wafers. An enclosure defines a low pressure region for treatment of work-pieces placed at a work-piece treatment station within the low pressure region. Multiple work-piece isolation load locks transfer work-pieces, one or two at a time, from a higher pressure region to the lower pressure for treatment and back to said higher pressure subsequent to said treatment. A first robot transfers work-pieces within the low pressure region from the load locks to a treatment station within the low pressure region. Multiple other robots positioned outside the low pressure region transfers work-pieces to and from the multiple work-piece isolation load locks from a source of said work-pieces prior to treatment and to a destination of said work-pieces after said treatment.

Work-piece treatment system having load lock and buffer

Apparatus and method for placement of workpieces such as silicon wafers in relation to an integrated circuit fabrication tool. A robotic arm mounted in relation to the tool moves workpieces in and out of the tool. A spacer has an exposed spacer surface facing away from the tool. The relative position of this exposed spacer surface is adjustable with respect to the tool. A movable cassette support supports one or more workpieces and is placed in abutting relationship with the spacer surface. It is onto this cassette support surface that a conveyor system such as an overhead transport delivers cassettes containing workpieces such as wafers for subsequent treatment by the tool.

Alignment structure and method for mating a wafer delivery device to a wafer treatment tool

The invention provides a wafer pad assembly for use in an ion implanter for mounting and cooling a wafer. The wafer pad assembly comprises a wafer support pad having an upper surface for mounting the wafer and a lower surface. The lower surface of the wafer support pad is connected to a coolant passage having an inlet section and an outlet section arranged in an opposed configuration, wherein said inlet section is counterbalanced by said outlet section. The lower surface is connected to a frame having an outer curved surface in mating engagement with a complementary shaped bearing surface of a housing wherein said wafer can be tilted or rotated about an axis.

Wafer pedestal tilt mechanism and cooling system

The invention provides a wafer pad assembly and actuation system for use in an ion implanter, preferably a batch-type ion implanter. The wafer pad assembly includes a rotatable wafer support pad having an upper surface for mounting the wafer, and a lower surface rotationally mounted to a housing of the wafer pad assembly. The lower surface of the wafer support pad further comprises a flange connected to a rotatable shaft. The shaft is connected to an actuator for selectively indexing the shaft so that the wafer support pad is rotationally indexed about its geometric center. The lower surface of the wafer support pad is also connected to a frame having an outer curved surface rotatably mounted within a mating bearing surface of a housing. The curved frame is connected to a plurality of linkages for moving the wafer support pad within the curved frame so that the wafer is pivotable or tiltable about its geometric center.

Wafer pedestal tilt mechanism

An improved bellows assembly (18) is provided for use in, for example, an ion implanter (10). The bellows assembly comprises a first mounting portion (56) located at one end of the bellows assembly for fixedly mounting the bellows assembly to a first vacuum chamber (16); a second mounting portion (52) located at an opposite end of the bellows assembly for slidably mounting the bellows assembly to a second vacuum chamber (15); and a steel bellows (54) located between the first and second mounting portions. The bellows extends generally along a longitudinal axis (64) and is expansible and contractible along this axis. The second mounting portion permits radial slidable movement of the bellows assembly with respect to the second chamber in a first plane substantially perpendicular to this axis. The second mounting portion comprises at least one sliding seal subassembly (80) for maintaining the vacuum, and a support ring (78) and a slide plate (82) located on opposite ends of the sliding seal subassembly. The slide plate and the sliding seal subassembly provide a slidable vacuum-tight mating surface therebetween.

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Marblehead, MA, United States of America

Allan D Weed