Zoned infrared heating module

Mon, 29 Jun 2026 07:01:24 +0800

On the lithography floor, a 1°C swing across the wafer can shift linewidth by nanometers, and a particle spike can kill a whole lot of product. That’s why the zoned infrared heating module was built to keep thermal behavior inside the process window, where it belongs. What matters, technically Short-wave infrared emitters are arranged in independently controlled zones, so you can shape the temperature to match the wafer map. Across the full process surface, wafer-level uniformity stays within ±0.1°C. Photoresist bake becomes repeatable: soft bake and hard bake run with tighter thermal budgets, and CD loss from thermal drift drops. The hardware is cleanroom-compatible from Class 1–100 and is built to keep particle events at zero. Reliability is measured, not promised: 24/7 operation with zero unplanned downtime, and emitter life is tracked so PM windows stay predictable. Why it works where it matters You coat photoresist, then you bake. If the bake is uneven, you get edge bead, poor adhesion, and etch bias after pattern transfer. With zoned control, you can match edge energy to center energy instead of over-baking just to cover the map. The payoff is consistent critical dimension control across the wafer, fewer rework lots, and stable yield. The module also cuts energy waste by delivering heat only where it’s needed, and because it recovers quickly between lots, cycle time compresses without sacrificing bake quality. What you need to know up front Installation means matching the host platform’s mechanical and electrical envelope—connector type, exhaust routing, the whole layout. Expect a commissioning step to map the zones to your specific wafer stack and photoresist recipe. The module is cleanroom-ready, sure, but it still needs cleanroom-grade utilities and a disciplined preventive maintenance plan to keep particle counts low and performance steady over time.

Photoresist drying infrared module

Sun, 07 Jun 2026 03:48:07 +0800

On the lithography floor, a half-degree drift in photoresist soft bake is enough to push critical dimension (CD) control out of spec. Wafers back up, scrap climbs, and the line pays for thermal inconsistency. We built our photoresist drying infrared module to take that uncertainty out of wafer drying, soft bake, and hard bake. What matters under the hood We run short-wave infrared with a quartz-halogen emitter, dumping energy straight into the photoresist layer. The module holds wafer-level temperature uniformity at ±0.1°C across the bake face, so every site gets the same thermal budget. Cleanroom Class 1–100 compatibility comes from a particle-controlled chamber and low-outgas materials. Zero particle generation isn’t a slogan—it’s enforced by airflow design and a surface finish that meets semiconductor contamination standards. Repeatability is locked in with closed-loop pyrometry and recipe-driven control that holds ramp, soak, and cool with sub-second stability. Here is the thing: in wafer cleaning and drying, infrared heats fast and even, cutting the thermal cycle without lag or hot spots. For soft bake, that means solvent comes out of the resist quickly and uniformly, so adhesion improves and edge bead variability drops. During hard bake, it cures the image without overheating the layers underneath, so overlay stays tight. The payoff is fewer reworks, a tighter CD distribution, and yield you can count on. Energy use drops because infrared heats the target, not the hardware around it. Reliability is measured in 24/7 operation with planned maintenance windows, not surprise downtime. The module drops into existing coat/bake tracks, but alignment tolerances are tight—sub-millimeter positioning is required to keep uniformity. Plan for cleanroom-rated power and cooling; the emitter runs hot, and thermal management directly affects setpoint stability. Recipe transfer is straightforward, but every resist stack behaves differently. Validate bake profiles on product wafers first, then lock the parameters into the control system so execution stays consistent.

Module on Infrared Heating Zone Solutions

Zoned infrared heating module

Photoresist drying infrared module