Tech & Product

MKS introduces Dynamic Frequency Tuning Technology

April 21, 2014

Patented DFT technology offered in RF plasma generators

Andover, MA,— MKS Instruments, Inc. has introduced Dynamic Frequency Tuning (DFT) technology in RF plasma generators. DFT is a patented new capability which provides significant enhancement over conventional frequency tuning schemes which require more than 500 μsec of course and fine steps to search for the minima in reflected power. With DFT, measurement of power distortion is used to quickly and accurately achieve matched power in less than 50μsec. DFT assures more power is delivered to the process and not mismatched or wasted. This is important because the plasma is stabilized faster making the process more controlled, consistent and repeatable.

DFT technology eliminates redundant sensing and control between the RF power supply and the impedance matching network, enabling the use of traditional control theory. This results in near instantaneous and more accurate power tuning, especially important during pulsed operation. DFT provides optimal tuning without the need to constantly adjust configuration parameters when a process change is made.

Used in semiconductor applications such as PECVD, PE-ALD and oxide and poly etch, DFT technology has proven invaluable for reduced plasma stabilization time resulting in more controlled, consistent and repeatable etch and deposition steps. DFT, in combination with MKS, ENI® Advanced RF pulsing, constitutes a key technology in the fabrication of 3D NAND, FinFET, DRAM and TSV devices. DFT and high frequency pulsing can prevent channel hole bowing and twisting during 3D NAND Flash fabrication. DFT and advanced pulsing are offered in RF plasma generator frequencies from 2MHz to 100MHz.

For more information on Dynamic Frequency Tuning, go to

Add Comment




Twitter Feed

Find It Fix It Forum

Sensors invites you to join the Findit-Fixit Forum, where you can get answers to your sensing questions—concerning technologies, products, methods, applications, and services--and also offer help to your fellow engineers. The Forum covers all kinds of topics, from the basics to the extraordinary.

Join the discussion!

© Copyright 2016 Questex, LLC. All Rights Reserved. Sensorsmag. Privacy Policy | Terms of Use

If you are having technical difficulties or considerations, please contact the webmaster.