Test Cost Reduction Methodology for InFO Wafer-Level Chip-Scale Package

Editor's note: To reduce the manufacturing cost of heterogeneous 3-D integration, the Integrated Fan-Out Wafer-Level Chip-Scale Packaging (InFO WLCSP) is one of the emerging packaging technologies. In this article, the authors propose a cost model for InFO WLCSP, which can be used for analyzing the total test cost with respect to the test configuration and for optimizing the test configuration and procedure.