Dimmable semiconductor heater lamp

Wed, 17 Jun 2026 16:07:26 +0800

On the lithography floor, a 0.5°C drift in bake temperature can shift linewidth by nanometers—and wipe out hours of work in the process. We built the dimmable semiconductor heater lamp to stop that drift where it starts, and to make thermal control a repeatable process variable instead of a roll of the dice. What matters, technically The lamp runs a short-wave infrared element inside a quartz envelope—chosen for fast response and stable spectral output. A semiconductor-grade driver handles output with 0.1% dimming resolution, so you can run closed-loop control against a calibrated pyrometer or your tool recipe. Across the active bake zone, temperature uniformity stays within ±0.1°C, and setpoint repeatability is better than ±0.2°C run after run. The assembly is built for Class 1–100 cleanrooms: low outgassing materials, no particle shedding, and a layout that lets you wipe things down routinely without knocking alignment out of spec. Why it works in practice Soft bake and hard bake on photoresist need thermal budgets that are tight, consistent, and fully documented. With this lamp, you hit the soft bake temperature exactly as the recipe calls for, then ramp to hard bake without overshoot—cutting down skin-effect and solvent retention. That means fewer defects, tighter critical dimension control, and less scrap. Power use drops because the lamp gets to setpoint quickly and holds steady, and the reliability is there for 24/7 operation without unplanned downtime. Here are the practical details Installation needs tool-side interlock and EMC compatibility. The driver is sensitive to EMI, so ground it per the interface diagram. Maximum continuous duty is rated for 5,000+ hours; after that, re-calibrate output to keep uniformity where it should be. When you change setpoints by more than 10%, budget a 30-minute warm-up to reach thermal stability. And keep your pyrometer calibration traceable—otherwise the loop is only as honest as your reference.

Dimmable on Industrial IR Heating Solutions

Dimmable semiconductor heater lamp