Role of LV-SEM reticle CD measurements on DUV lithography

Thomas Marschner; Ivan K.A. Pollentier; Goedele Potoms; Rik M. Jonckheere; Kurt G. Ronse; Marco Polli

doi:10.1117/12.350870

14 June 1999 Role of LV-SEM reticle CD measurements on DUV lithography

Thomas Marschner, Ivan K.A. Pollentier, Goedele Potoms, Rik M. Jonckheere, Kurt G. Ronse, Marco Polli

Proceedings Volume 3677, Metrology, Inspection, and Process Control for Microlithography XIII; (1999) https://doi.org/10.1117/12.350870
Event: Microlithography '99, 1999, Santa Clara, CA, United States

Abstract

In this work, we investigate the role of low voltage reticle CD-SEM measurements on DUV lithography. We compare reticle measurements carried out on tow different CD-SEMs and optical measurements as typically carried out at mask shops. CD-SEM measurements using the 50 percent derivative algorithm on the KLA 8100ER CD-SEM and the 50 percent threshold algorithm on the Hitachi 6100 CD-SEM show good correlation with the optical measurements. As examples for the importance of LV CD-SEM reticle measurements we show the influence of proximity effects during reticle printing on CD variations on reticle level by comparing the values obtained on the reticle and on the wafer. Finally, we determine mask error factors. The MEF has to be taken into account to compare wafer and reticle CDs. We show that it does not change for wafer measurement after lithography and after poly-etch. The use of different metrology tools or electrical linewidth measurements does not influence the MEF.

Citation Download Citation

Thomas Marschner, Ivan K.A. Pollentier, Goedele Potoms, Rik M. Jonckheere, Kurt G. Ronse, and Marco Polli "Role of LV-SEM reticle CD measurements on DUV lithography", Proc. SPIE 3677, Metrology, Inspection, and Process Control for Microlithography XIII, (14 June 1999); https://doi.org/10.1117/12.350870

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available