An anomaly in a thin film will disturb the phase of a light wave passing through it. Normal cameras only register the amplitude of the reflected light but are insensitive …

Glass substrates are emerging as an important platform for advanced packaging and redistribution layers, driven by their combination of low coefficient of thermal expansion, excellent surface flatness, and low dielectric …

Wafer level packaging (WLP) pushes interconnect density and form factor to their limits, but it also pushes metrology to its limits. Inspection of bump height, redistribution layer (RDL) step heights, …

Wafer bonding is a critical process step in advanced semiconductor manufacturing. It is used to join two wafers face-to-face to create stacked structures for 3D integration, MEMS packaging, power devices, …

Thin film layers are the foundation of every modern semiconductor device. Controlling the thickness and uniformity of these films across the entire wafer is critical because even nanometre-scale variations translate …

lineWLI’s measurement capabilities go beyond just height information. The device can also measure the thickness of transparent thin films. This posts revisits a sample from a previous post. In the …

11:22 AM Wafer dicing is the process of separating a finished semiconductor wafer into individual dies. While it appears straightforward compared to the complexity of front-end fabrication, it is a …

Dry etching is one of the most critical process steps in semiconductor fabrication, used to transfer circuit patterns from photoresist into the underlying material layers such as silicon dioxide, silicon …

Backgrinding reduces silicon wafers to the thickness required for advanced packaging. However, the grinding process leaves a damaged surface layer whose roughness directly determines die strength, downstream bonding yield, and …