How to Prevent High Wafer Warpage in Fan-in and Fan-out Wafer Level Packaging
While critical to the processes, molding and encapsulation materials used in both fan-in and fan-out wafer-level packages (FI WLP/FO WLP) can lead to high wafer warpage after molding, which may ultimately lead to downstream wafer handling issues. Additionally, many of these materials contain certain anhydrides that are banned under the...