Post cleaning wafer infrared heater

Tue, 23 Jun 2026 13:22:11 +0800

On the fab floor, a little post-clean moisture and native oxide regrowth will sink photoresist adhesion before you even know it. One slow ramp, one hotspot, and your Soft Bake profile is off. You see the fallout later—footing loss after etch, bridged features in lithography. We built our post-clean wafer infrared heater to pull that uncertainty off the table. What matters, technically It runs short-wave infrared emitters through a quartz-free optical path so you don’t add particles. That keeps counts where they need to be for Class 1–100 cleanroom operation. Temperature uniformity across the wafer stays at ±0.1°C, so your photoresist bake window stays tight and repeatable, lot after lot. The response is fast, so you can ramp and soak without blowing past the thermal budget. The heater handles standard Soft Bake and Hard Bake recipes, and drops cleanly into in-line tracks or standalone drying cells. Why it works in practice Right after cleaning and rinsing, it dries and conditions the surface on the spot, stabilizing the wafer before you hit photoresist spin. Tight temperature control gives you better photoresist thickness uniformity and cuts edge-bead variability—matters when you’re running dense logic or fine-pitch memory. Energy use drops because heat goes straight into the substrate with minimal thermal mass. Uptime stays steady with a solid emitter life plan and modular serviceability, so unplanned stops don’t freeze the line. What you need to plan for The unit needs a stable voltage supply and clean cooling to hold setpoint repeatability. Consistent airflow and clean emitter windows are non-negotiable for thermal performance. Installation tolerances are tight, and the footprint has to match the handler or track interface. Run a short commissioning pass to tune ramp rates to your photoresist stack, then lock the recipe in.

Cleaning on Radiant Infrared Heating

Post cleaning wafer infrared heater