Resources Contact Us Home
Target cooling and support for magnetron sputter coating apparatus

Image Number 5 for United States Patent #5409590.

A target of a thickness, which varies across its radius according to the amount of material required to be sputtered, is supported in a nest in a chamber of a sputter coating apparatus. Positioned behind the nest is a rotating magnet carrier having arranged thereon in a closed loop a permanant or electro magnetic strip, but preferably a flexible permanently magnetic material, with portions near the rim of the target and portions near, but not on, the target center about which the magnet rotates. The magnetic loop is transversely polarized with one pole toward the target rim and one toward the target center so that its field will enclose the rim of the target within a magnetic tunnel that traps a plasma over the target. Lumped magnets across the center from the strip support the plasma near the center so as to cause some sputtering at the target center. Other lumped magnets adjacent the strip help sharpen the field so that a desired distribution of sputtering can be achieved. Enclosed in a sealed space behind and in thermal contact with the target nest is the carrier from which the magnets project to facilitate the flow of cooling fluid across the back surface of the nest to cool the target as the carrier rotates.

  Recently Added Patents
Synchronization of communication equipment
Flexible pouch
Host route convergence based on sequence values
Wireless updating of hearing devices
Parallel processing computer systems with reduced power consumption and methods for providing the same
Performance monitoring of advanced process control systems
Process for preparing higher hydridosilanes
  Randomly Featured Patents
Faucet handle
Combination inhaler and peak flow rate meter
Cardiac resynchronization with adaptive A1-A2 and/or V1-V2 intervals
Emergency call handling in contention-based wireless local-area networks
Procedural cannula and support system for surgical procedures
Control device for internal combustion engine
Direct automatic frequency control method and apparatus
Method and means for enhancing microwave popping of popcorn
Methods and systems for using RFID in biological field
Supply organizer