On the lithography floor, the bake isn’t a warm-up. It’s the process. A 2°C swing during soft bake will shift the photoresist Tg, and hard bake nonuniformity comes back to bite you as edge bead and linewidth excursion. You need temperature control you can count on, not something you cross your fingers over.
What matters, technically
We run a precision IR sensor on the wafer that keeps wafer-level thermal uniformity at ±0.1°C across the bake surface, and repeatability holds within ±0.05°C lot to lot. The sensor head is cleanroom-compatible for Class 1–100 and engineered to generate zero particles. The quartz/halogen emitter profile gives stable, repeatable NIR output—no hot spots. It covers photoresist bake profiles from 90°C to 250°C with tight thermal budget control, and the system is built for 24/7 operation without unplanned downtime.
Why it works in the fab
In practice, soft bake sets the resist the same way, every run. Hard bake locks the profile without overshoot. Lithography overlay gets better because the thermal history is consistent. You run fewer qualification lots, cut scrap, and tighten cycle time. Energy use drops too, because the bake is tuned to the resist chemistry, not to guesswork.
The things you actually need to know
Installation means matching the bake plate geometry and the emissivity of the carrier. We provide a calibration kit and a 30-minute integration checklist. You’ll see a small bump in setup time on legacy tracks, but once it’s aligned, the process window opens up. For the best stability, keep the sensor window free of residues and confirm cleanliness during preventive maintenance.