Photoresist baking lamp

Sun, 07 Jun 2026 01:06:26 +0800

On the lithography floor, soft bake and hard bake aren’t just steps—they’re thermal handshakes. A half-degree drift shifts CD bias, and a hot spot can print a defect that follows the wafer straight into yield loss. We built our photoresist baking lamps to keep the thermal budget where the process needs it. The core is wavelength-selective infrared, delivered by short-wave and medium-wave quartz emitters matched to photoresist absorption. That means rapid, direct-to-resist heating with wafer-level uniformity of ±0.1°C across the bake surface. Temperature repeatability lands at ±0.2°C from lot to lot, so the same thermal profile hits every wafer. Cleanroom Class 1–100 compatibility is baked into the design: low outgassing materials, sealed junctions, and an airflow-friendly form factor that keeps particle generation at zero during bake. You get 24-hour reliability from long-life emitters, stable reflectors, and thermal control loops that hold setpoint even when line voltage swings. In high-volume patterning, tight thermal control tightens CD distribution, cuts edge bead and standing-wave artifacts, and reduces rework. Exposure windows become more predictable, excursions drop, and bake performance stays consistent shift after shift. Energy use falls because the lamp heats the resist directly, not the chuck, and the fast ramp shortens cycle time without compromising bake quality. One practical note: these lamps need a clean power profile and proper thermal management at the tool interface. Match voltage, current, and connector to the equipment spec, and make sure the bake chamber airflow pattern doesn’t create local laminar shadows. When the integration is done right, the lamp behaves like a fixed thermal asset—one you can trust to keep photoresist chemistry and lithography physics in agreement.

Baking on Warm IR Heater Supply Co.

Photoresist baking lamp