Zoned heating for advanced wafer fab

Tue, 09 Jun 2026 01:03:40 +0800

On the lithography floor, a 0.3°C drift during photoresist soft bake can push line-width excursion through etch and straight into yield loss. Thermal budget doesn’t give you a second chance. We built zoned heating for advanced wafer fabs to keep temperature where it needs to be—on the wafer, across the surface, and inside the process window. What matters, technically, is control you can trust. The platform uses short-wave infrared elements with fast-response control per zone, so wafer-level uniformity lands at ±0.1°C across the hotplate. Temperature repeatability is ≤±0.5°C from lot to lot, which keeps critical photoresist bake profiles stable. It runs in Class 1–100 cleanrooms without hiking particle counts—low-outgassing materials and sealed thermal zones keep the line flat. You get 24/7 operation with MTBF measured in tens of thousands of hours, and maintenance you schedule, not scramble for. In production, zoned heating turns thermal variability into a variable you can manage. Soft bake and hard bake profiles track the recipe exactly, which cuts CD and thickness dispersion across the wafer. Process windows open up, rework drops, and scrap falls. Energy use comes down, too: localized zone control kills waste heat, and warm-up time between lots shortens. The payoff is consistent lithography, predictable etch and deposition, and line yields that stay stable. Here are the practical details you need. Zoned heating isn’t plug-and-play without planning. The footprint and clearance around the hotplate and robot path have to be respected—retrofits mean lining up power, cooling, and exhaust. Match the zone count to your wafer size and edge-exclusion targets, and set calibration intervals to hold that ±0.1°C uniformity. We provide interface specs up front so installation doesn’t become a schedule risk.

Advanced on Indoor Warm IR Solutions

Zoned heating for advanced wafer fab