Abstract
Due to the absence of defect-free blanks in extreme ultraviolet (EUV) lithography, defect mitigation is necessary before mass production. One effective way to mitigate the defect impact is to increase the distance between the defects and feature boundaries such that the defects will not affect the printing of the features. Some algorithms have been developed to move the whole layout within the exposure field in order to avoid all defect impact. However, in reality the die size is usually much smaller than the exposure field, such that one blank is packed with multiple copies of the die, and each die can be placed independently within the exposure field. In this paper, we develop an EUV reticle placement algorithm to maximize the number of valid dies that are immune to defects. Given the layout of a die and a defective blank, we first apply a layout relocation algorithm to find all feasible regions for the die on the blank. Then we develop an efficient placement algorithm to place the dies within the feasible regions one at a time until all feasible regions are fully occupied. The simulation results show that our algorithm is able to find a solution efficiently and the number of valid dies placed by our algorithm is very close to the optimal solution.
Original language | English |
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Title of host publication | Extreme Ultraviolet (EUV) Lithography III |
Editors | Patrick P. Naulleau, Obert R. Wood II |
Publisher | SPIE |
ISBN (Print) | 9780819489784 |
DOIs | |
Publication status | Published - Feb 2012 |
Event | Extreme Ultraviolet (EUV) Lithography III - San Jose, United States Duration: 13 Feb 2012 → 16 Feb 2012 https://www.spiedigitallibrary.org/conference-proceedings-of-spie/8322.toc#FrontMatterVolume8322 |
Publication series
Name | Proceedings of SPIE - The International Society for Optical Engineering |
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Volume | 8322 |
ISSN (Print) | 0277-786X |
Conference
Conference | Extreme Ultraviolet (EUV) Lithography III |
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Country/Territory | United States |
City | San Jose |
Period | 13/02/12 → 16/02/12 |
Internet address |
Scopus Subject Areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics
- Computer Science Applications
- Applied Mathematics
- Electrical and Electronic Engineering
User-Defined Keywords
- Blank defect mitigation
- EUV
- Multi-die placement