Zoned heating for advanced wafer fab

Thu, 02 Jul 2026 09:40:56 +0800

On the fab floor, a 1°C swing during photoresist soft bake is enough to walk your critical dimensions and scrap a whole lot of wafers. Conventional ovens heat the chamber, not the wafer itself. We built zoned heating to put the heat where it counts—right on the wafer—while staying inside the thermal budget of every film. What matters, technically Our zoned infrared modules hold wafer-level uniformity within ±0.1°C across the active zone, and setpoint repeatability stays within ±0.5°C over thousands of cycles. Short-wave emitters get you to soft bake and hard bake setpoints fast, and the carbon-fiber-free design keeps particle counts down where you need it—Class 1–100 environments. The system runs 24/7 with predictive thermal drift compensation and keeps output stable past 5,000+ hours. Here’s why this works in lithography lines: that precision buys you tighter CD control and fewer reworks. For wafer drying and edge bead removal, targeted zone heating speeds up solvent evaporation without cooking the substrate, so throughput climbs and energy draw drops. Photoresist bake profiles stay repeatable lot after lot, which cuts variability across machines and shifts. You get process margin back, and you stop spending time tuning recipes just to cover for thermal non-uniformity. The practical details Zoned heating has to be tightly integrated with the track or coater/bake platform—lamp zones need to sync cleanly with spin chuck motion. Retrofits are doable, but you’ll want to verify mechanical envelopes and coolant routing for each specific tool. Plan for cleanroom-compatible exhaust and EMC shielding, especially near exposure equipment that’s sensitive to interference. The payoff is real the moment thermal profile stops being the hidden variable in your yield model.

Zoned on Infrared Quartz Heat Solutions

Zoned heating for advanced wafer fab