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In double patterning lithography, within-layer overlay error results in critical dimensions variability.
The structures are therefore "self-aligned" with each other with negligible overlay error.
However, wafer bonding tools currently do not have the capability to achieve better than 100 nm overlay error (3 sigma).
Therefore, statistical design techniques should be applied to estimate and optimize the yield loss due to overlay error.
Overlay error has been considered as a systematic source of variation; however, it is segueing into a random error for technology nodes smaller than 45-nm.
In this paper, we study the impacts of overlay error on functional and parametric yields of interconnects in 32- and 22-nm technologies.
Similar(52)
However, due to the higher flexibility and thermal expansion of elastomeric materials such as PDMS, registration to existing patterns can be challenging leading to overlay errors.
The insulin injected groups were shifted by 0.3 min to reduce overlay of error bars.
Both testing methods yielded very similar stress strain graphs with almost identical elastic and plastic regions with overlaying standard error bars for both whale bone and aluminum foam specimens.
We're here to discuss her "Human Error" series, in which she overlays heartbreak-related error messages onto pictures Photoshopped to resemble Polaroids.
We propose a novel overlay multi-hop forward error correction (OM-FEC) scheme that provides FEC encoding/decoding capabilities at intermediate nodes in the overlay path.
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