Chatted with labmember who reported burnt resist. There may be He leak issues with his multi layered wafer stack fitting on the lip seal, or having used EBR at the litho step the edges may have been etched back enough to allow for leaky He. He will show me a sample wafer before the next etch
Additionally, another user ran a 3.5 hr etch without resist burning.
Thursday, May 31, 2012
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