Laser Stealth Dicing of SiC Wafers: Subsurface Microcracks, Edge Chipping, Dicing Quality, Inspection and Yield Control
Silicon carbide wafers are increasingly used in high-power and high-temperature semiconductor devices, but they also present major challenges during singulation. Because SiC is extremely hard and brittle, conventional blade dicing can cause edge chipping, kerf loss, mechanical stress and tool wear. As device structures become smaller and wafer value increases, manufacturers are paying more attention […]
Silicon Carbide (SiC) Wafer Dicing and Cutting Methods: Technologies, Challenges, and Future Trends
1. Introduction The manufacturing of silicon carbide (SiC) power devices involves highly complex semiconductor processes, typically consisting of hundreds of steps. These processes can be broadly divided into: Among them, wafer dicing (cutting and singulation) plays a critical role as the bridge between front-end processing and back-end packaging. As device miniaturization and integration continue to […]