Share Email Print

Proceedings Paper

Characterization of assist features on impact of mask error enhancement factors for sub-0.13-um technology
Author(s): Sia-Kim Tan; Qunying Lin; Cho Jui Tay; Chenggen Quan
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

Resolution enhancement techniques, such as phase shifting, OPC and assist features were greatly used to enable sub-wavelength features printing using 248nm lithography due to the delay of 193nm lithography. Assist features, also known as scattering bars, was utilized to improve the image quality for isolate lines for the sub-wavelength features as well as to improve the overlapping process latitude. In this study, MEEF was fully characterized with assist features. Great improvement in MEEF was observed by applying assist features to the sub-0.13 micrometers technologies. The effect of mask error enhancement by the deviation from the designed line width of the image line with different sets of placement and width sizes of the assist features was been studied. The impact of MEEF by different placement of the assist features was observed. In addition, a simulation program had been used for the study of the deviation in the placement of the scattering bars as well as its size. It was shown that simulation aerial image results were quite matching with imperial results. The effect of annular illumination had also been examined as compared to conventional illuminations.

Paper Details

Date Published: 11 March 2002
PDF: 8 pages
Proc. SPIE 4562, 21st Annual BACUS Symposium on Photomask Technology, (11 March 2002); doi: 10.1117/12.458264
Show Author Affiliations
Sia-Kim Tan, National Univ. of Singapore (Singapore)
Qunying Lin, Chartered Semiconductor Manufacturing, Ltd. (Singapore)
Cho Jui Tay, National Univ. of Singapore (Singapore)
Chenggen Quan, National Univ. of Singapore (Singapore)

Published in SPIE Proceedings Vol. 4562:
21st Annual BACUS Symposium on Photomask Technology
Giang T. Dao; Brian J. Grenon, Editor(s)

© SPIE. Terms of Use
Back to Top
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?