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.

Spin coater bake lamp

Sun, 07 Jun 2026 01:32:57 +0800

On the lithography floor, the bake isn’t a pause—it’s the line in the sand. Soft bake drives off the photoresist solvent. Hard bake locks in the mask image before etch. If the lamp starts to drift, you pay for it fast: non-uniform critical dimension, edge bead, and scum after development. That’s why the spin coater bake lamp exists—to take the thermal guesswork out of the equation. What matters under the hood We built the bake lamp around short-wave infrared in a quartz envelope, because it dumps energy straight into the photoresist layer, fast. The payoff is wafer-level thermal uniformity within ±0.1°C across the full coat diameter, and repeatability that holds lot to lot. Response time is sub-second, so the thermal budget stays tight and the bake profile follows the recipe without overshoot. It runs in Class 1–100 cleanrooms and is engineered for zero particle generation—because in this business, every airborne defect is a yield hit. Why it stays in production In day-to-day operation, this lamp keeps the bake window where it belongs: inside spec, not flirting with the edge. Soft bake and hard bake become predictable, so line-width control tightens and etch selectivity behaves the way it was designed. Scrap and rework drop, and you stop chasing drift between shifts. It’s also efficient, because the lamp heats the target, not the tool hardware around it. Add in the long service life and you get fewer hot-swaps and less unplanned downtime. Here’s what to watch for The lamp only delivers when the optical path stays clean and the mounting repeats the same focal offset. If the coater bowl or lamp window carries residues, expect a tighter process window—plan a preventive clean during the maintenance window. Make sure the lamp matches the tool’s voltage and connector, and verify the recipe temperature setpoint against actual wafer temperature with your standard thermocouple map.

Coater on Radiant Infrared Heating

Coater developer infrared heater

Spin coater bake lamp