Patent Document ID: 8452441
Application ID: 12853497
Patent Status: 1

Claim One:
1. A process quality prediction system comprising: a processing apparatus arranged for performing a process on at least one batch product; a measurement apparatus arranged for sampling and inspecting the at least one batch product to obtain an actual measured value of the batch product; a fault detection and classification unit electrically connected to the processing apparatus for recording the process to obtain a process value; a data collection unit connected to the fault detection and classification unit and the measurement apparatus for obtaining the process value via the fault detection and classification unit and obtaining the actual measured value of the batch product from the measurement apparatus; and a virtual metrology automation unit arranged for establishing a virtual metrology model based on the process value and the actual measured value of the batch product, and predicting a quality value of the product being processed inline according to the virtual metrology model in real-time; wherein the batch product is a wafer or a substrate; wherein the virtual metrology automation unit filters out the process-independent data from the process value and the actual measured value of the batch product to fetch a process characteristic value set; wherein the virtual metrology automation unit uses the process characteristic value set to update a moving window module and thus obtain a key variable set affecting the process.