Tel Fsi, Inc.

Tel Manufacturing and Engineering of America, Inc.

Fsi International, Inc.

William P Inhofer

Kevin L Siefering

Sean Moore

Lance Van Elsen

Thomas J Wagener

David Dekraker

Todd K Maciej

John C Patrin

The present invention provides lift pin strategies with a reduced risk of causing contamination due to the up and down actuation of lift pins. The present invention provides a lift pin system that uses electromagnetic actuation strategies in order to raise and lower lift pins. The electromagnetic forces act remotely on the lift pins so that direct contact or coupling of the lift pins to actuation components is not required. This avoids contamination that otherwise would be associated with friction and associated lubricants used for mechanical actuation strategies.

Magnetic integrated lift pin system for a chemical processing chamber

Cleaning systems and methods for semiconductor fabrication use rotatable and optionally translatable chuck assemblies that incorporate magnetic levitation and rotation functionality to cause chuck rotation. The rotating chuck components do not physically contact other chuck components when levitated and rotating. This eliminates corresponding components whose friction or lubricants might generate contamination. The low friction chuck functionality of the present invention is useful in any fabrication tool in which a workpiece is supported on a rotating support during a treatment. The chuck is particularly useful in cryogenic cleaning treatments. By avoiding the use of lubricants for this rotating interface, process chambers can be evacuated and/or vented up to higher pressures much faster. This significantly reduces cycle time for cryogenic treatments.

Magnetically levitated and rotated chuck for processing microelectronic substrates in a process chamber

The disclosure relates to systems and methods for metering a dose volume of fluid that may be used to treat microelectronic substrates. The system enables precision dispensing of relatively small amounts of a liquid chemical into a chemical bath or processing chamber for microelectronic substrates. The dispensing device may include a fluid conduit with a plurality of actuation devices that may limit fluid communication between the actuation devices and store a portion of the fluid in expandable membrane. The actuation devices may push or pull the fluid within the fluid conduit when the expandable membrane expands or contracts. The configuration and operation of the actuation devices may enable the collection, isolation, and dispensing of the dose volume.

Systems and methods for metering a dose volume of fluid used to treat microelectronic substrates

Embodiments of the invention provide a processing system and a method for processing with a heated etching solution. In one example, tight control over temperature and hydration level of an acidic etching solution is provided. According to one embodiment, the method includes forming the heated etching solution in a first circulation loop, providing the heated etching solution in the process chamber for treating a substrate, forming an additional heated etching solution in a second circulation loop, and supplying the additional heated etching solution to the first circulation loop. According to one embodiment, the processing system includes a process chamber for treating the substrate with the heated etching solution, a first circulation loop for providing the heated etching solution into the process chamber, and a second circulation loop for forming an additional heated etching solution and supplying the additional heated etching solution to the first circulation loop.

Processing system and method for providing a heated etching solution

A method and processing system are provided for independent temperature and hydration control for an etching solution used for treating a wafer in process chamber. The method includes circulating the etching solution in a circulation loop, maintaining the etching solution at a hydration setpoint by adding or removing water from the etching solution, maintaining the etching solution at a temperature setpoint that is below the boiling point of the etching solution in the circulation loop, and dispensing the etching solution into the process chamber for treating the wafer. In one embodiment, the dispensing includes dispensing the etching solution into a processing region proximate the wafer in the process chamber, introducing steam into an exterior region that is removed from the wafer in the process chamber, and treating the wafer with the etching solution and the steam.

An apparatus having a processing chamber for processing a semiconductor wafer under evacuated conditions that is capable of transfer of the wafer from the processing chamber under conditions that are substantially equal to the pressure of an adjacent environment. In a preferred embodiment, the processing chamber is pressurized and vented with a source of high purity dry gas that is diffused into the chamber through a diffuser to pressurize the processing chamber after processing of the wafer is completed. A chamber equalization port between the processing chamber and the adjacent environment is opened to maintain the pressure within the chamber at or slightly above the pressure of the adjacent environment, and the chamber valve is then opened. The wafer can then be removed from the processing chamber, and a new wafer can be inserted. The chamber is then sealed by closing the chamber valve and the equalization port, and the atmosphere within the processing chamber is evacuated to a desired level. The new wafer is then processed, and the above steps are repeated to remove the wafer once processing has finished.

Growing community of inventors

Plymouth, MN, United States of America

William P Inhofer