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US5447570A Purge gas in wafer coating area selection 失效
在晶圆涂层区域选择吹扫气体

Purge gas in wafer coating area selection
摘要:
Apparatus including a support and purge gas supply prevents edge and backside coating on a wafer in manufacture of integrated circuits. Various enclosure elements and methods are disclosed for containing and directing purge gas, and a CVD system is provided incorporating the elements of the invention.
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