In order to meet the industry’s increasingly demanding requirements, especially in the area of improving pattern edge placement error for multiple patterning processes, we have developed the leading edge NSR-S635E ArF immersion scanner. The NSR-S635E delivers marked enhancements in scanner performance compared to the previous generation system, and provides expanded alignment capacity with a groundbreaking system called the inline Alignment Station (iAS) [1]. In this paper, we introduce the details of the NSR-S635E, including iAS, and demonstrate their capabilities for solving production challenges now and in the future.
The final lithography accuracy is determined by what is known as the “on-product” performance, which includes product
wafer-related errors and long-term stability. It is evident that on-product performance improvement is absolutely
imperative now, and will become even more crucial in coming years. In order to meet customers’ future requirements,
we have developed the next-generation lithography system focusing on wafer alignment advancements to improve onproduct
performance.
This newly developed wafer alignment system will help customers achieve their aggressive next-generation
manufacturing accuracy and productivity requirements. In this paper, we describe the details of the new wafer
measurement system and provide supporting performance data.
In order to achieve stable operation in cutting-edge semiconductor manufacturing, Nikon has developed NSR-S630D with extremely accurate overlay while maintaining throughput in various conditions resembling a real production environment. In addition, NSR-S630D has been equipped with enhanced capabilities to maintain long-term overlay stability and user interface improvement all due to our newly developed application software platform. In this paper, we describe the most recent S630D performance in various conditions similar to real productions. In a production environment, superior overlay accuracy with high dose conditions and high throughput are often required; therefore, we have performed several experiments with high dose conditions to demonstrate NSR’s thermal aberration capabilities in order to achieve world class overlay performance. Furthermore, we will introduce our new software that enables long term overlay performance.
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