Troubleshooting RTP system heater

Sat, 27 Jun 2026 04:45:45 +0800

On the floor, when the RTP heater starts to drift, the lot keeps moving. A soft bake that’s even slightly off throws the photoresist profile. A hard bake that runs too hot or too cold makes CD control a guessing game. The fallout is scrap, rework, and a thermal budget you can’t get back. What actually matters under the hood We built the RTP heater around wafer-level uniformity of ±0.1°C, across the whole run. Halogen short-wave lamps give you fast, repeatable ramps with tight control at the soak points, so the photoresist bake window stays intact. The quartz assembly and low-outgassing materials keep particle counts steady in Class 1–100 cleanrooms, and the carbon fiber insulation cuts energy draw without adding thermal mass. It drops into existing chambers and controllers through standardized connectors, so the thermal profile follows the recipe, not the other way around. Here’s why it holds up in lithography and etch: temperature is a process dimension you can’t measure after the fact. With this heater, soft bake and hard bake temperatures settle in, CD uniformity improves, and film stress stays inside spec. Repeatability from lot to lot shortens qualification cycles and keeps the scheduler honest. The system runs 24/7 without unplanned downtime, and the lamp life hits 5,000+ hours between changes, which means fewer spares on the shelf and leaner maintenance windows. Installation comes down to matching chamber geometry and confirming the lamp array alignment to the wafer plane. Even a small offset can introduce edge-to-center skew. Plan a short qualification run to re-tune ramp rates and soak times for your photoresist stack. Expect a bit more cooling load—holding ±0.1°C means tighter coordination with the chillers. We provide the interface drawings and thermal mapping data so the swap goes clean.

RTP on The Infrared Heating Company

Troubleshooting RTP system heater