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Cost Comparison of Fan-out Wafer-Level Packaging to Fan-out Panel-Based Packaging
Keywords: FOWLP, Cost , Panel-based
Fan-out wafer-level packaging (FOWLP) offers many significant benefits over other packaging technologies. It is one of the smallest packaging options, but unlike fan-in wafer-level packaging, the IO count of FOWLP is not limited to the area of the die. Given these advantages, FOWLP continues to grow in popularity. While the cost of FOWLP is usually reasonable, there are still opportunities for future cost reduction. Many FOWLP suppliers are exploring panel-based manufacturing instead of the current wafer-based approach. Since many more packages can fit on a large panel than on a wafer, the cost per package can be reduced. The surface area of a 400mm x 400mm panel is 1,600 sq.cm. compared to 706 sq.cm. for a 300mm wafer. This means more than twice as many packages can be manufactured on a single panel. However, this does not mean that the cost per package will be cut in half. Many of the costly manufacturing activities do not depend on the surface area of the panel or wafer and they will not be affected by a larger panel. This paper analyzes the current cost of FOWLP activities and highlights which activities would benefit from a move to panels. A detailed breakdown of all the cost drivers for both panel and wafer-based packaging will be presented.
Chet Palesko, President
SavanSys Solutions LLC
Austin, TX
USA


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