Production line quality processes

摘要

Methods, systems, and software for improving the product quality of a production line having multiple production steps, at least some of which employ multiple individual tools, including producing product lots using different combinations of tools, setting a quality benchmark for the resulting product lots, identifying product lots that meet the quality benchmark, identifying the tools used to produce the identified quality product lots, and producing additional product lots using at least substantially the identified quality tools.

主权项

1. A method of improving lot quality for semiconductor chip package product lots produced on a production line having a plurality of production steps, wherein at least some of the production steps utilize a plurality of individual tools, and wherein the method comprises:
producing a plurality of semiconductor chip package product lots using different combinations of the tools; determining quality values for the produced product lots; establishing a quality benchmark for the product lots, including establishing a maximum acceptable failure rate for the product lots; identifying product lots that meet the quality benchmark, including identifying product lots having a failure rate greater than the maximum acceptable failure rate; identifying a set of quality tools used in the production of identified quality product lots; identifying a set of failing tools used in the production of identified failing product lots to create a listing of suspect tools, and evaluating listed suspect tools for causes of semiconductor chip package failure; and producing additional product lots by shifting production at least substantially to the identified set of quality tools.