Abstract
To obtain higher throughput of more than 5wafer per hour (WPH), authors propose a high throughput 50kV e-beam direct writer MCC8 that has eight column. MCC8 has multi column cell (MCC), character projection (CP) with design for e-beam (DFEB) and high current density technologies. Proof-of-concept evaluations for combination between MCC and CP have finished in the MASK-D2I project of ASET, including mix-and-match overlay results of better than 5nm. By the combination of these proven technologies, MCC8 realizes a throughput of 5WPH. Furthermore, over 30WPH can be realized by clustering six MCC8s together.
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