发明授权
US07117058B2 Automatic statistical process control (SPC) chart generation apparatus and method thereof 有权
自动统计过程控制(SPC)图生成装置及其方法

Automatic statistical process control (SPC) chart generation apparatus and method thereof
摘要:
A system and method for automatic SPC chart generation including a storage device and a data acquisition module. The storage device stores a chamber management tree, a recipe window management tree, a parameter configuration table and multiple chart profile records. The data acquisition module, which resides in a memory, acquires multiple process events and parameter values corresponding to the process events and a process parameter, selects a relevant statistical algorithm, calculates a statistical value by applying the statistical algorithm to the parameter values, creates a new chart profile record and a parameter statistics record therein if the chart profile record is absent, and stores the statistical values and measured time in the parameter statistics record.
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