Coater developer infrared heater

Sat, 20 Jun 2026 02:23:20 +0800

On the lithography floor, a 0.5°C drift in soft bake or hard bake isn’t a “small deviation.” It’s yield bleeding away—plain to see in the CD uniformity plot and in the scrap tray. Coater/developer infrared heaters have to keep thermal stability in lockstep with the optics and the photoresist. We built this heater around wafer-level control. The NIR emitter array dumps energy straight into the wafer, so you get fast ramps without blowing the chamber thermal budget. Across the shot, wafer-plane uniformity stays within ±0.1°C—meaning edge dies see the same bake profile as the center. The hardware is clean-room ready: quartz-sheathed elements and a low-outgassing layout that fits Class 1–100 environments. Particles stay out where they belong, thanks to sealed junctions and airflow paths that don’t kick debris into the film. And repeatability comes from closed-loop control at the wafer surface, not from guessing at the heater block. In coater/developer tracks, time and temperature are one problem. The infrared heater cuts bake time without thermal overshoot, so you can run faster cycles and still hold critical dimension control. Photoresist profiles stay consistent lot-to-lot, which means fewer reworks and fewer mask tweaks. It also helps the utility bill. Because the energy goes where it matters—straight to the wafer—wasted heat in the tool chassis drops. Reliability, in practice, is uptime: the system runs 24/7 with predictable maintenance windows, so you don’t get blindsided by downtime that wrecks your wafer starts. Installation comes down to the details: match the tool interface, then confirm the electrical and cooling envelope you actually have. The heater prefers clean, dry air and stable line voltage; voltage sag can add a little settling time on fast recipes. We ship a calibration kit and recipe templates for common photoresists, but the final tuning has to be grounded in your metrology and qualification lots.

Developer on Radiant Infrared Heating

Coater developer infrared heater