Drying on Quartz Infrared Heating Source

MEMS sensor wafer drying heater

Tue, 21 Jul 2026 09:45:59 +0800

Getting Your MEMS Wafers Dry Without the Headache

Drying MEMS sensor wafers is a bit of a balancing act. You need the water gone—fast—but if you go too aggressive, you risk thermal stress or leaving behind nasty residue. The trick we’ve found is using infrared heaters paired with gold-coated reflectors. It sounds fancy, but it’s really just about making sure the heat actually hits the wafer instead of heating up the inside of your machine. Why gold? Think about a standard quartz lamp. It throws heat in every direction. In a typical setup, you’re basically tossing half your energy into the void. By adding a high-purity gold coating to the reflector, we can bounce about 98% of that infrared light right back where it belongs. This isn’t just about lowering the electric bill. It’s about power. When you concentrate those watts per square centimeter, you hit your target temperature way faster. Your cycle times drop, and your throughput goes up. It’s a win-win. The tricky part Of course, you can’t just crank the power and walk away. When you’re dealing with this much concentrated heat, your lamp housing takes a real beating. If your airflow isn’t dialed in to pull heat away from the electrical connections, your filaments are going to burn out way sooner than they should. We focus on keeping the footprint small while making the heating zone as effective as possible. The goal is a tight thermal profile. You don’t want the edges of your wafer scorching while the center is still damp. Getting the fit right One last thing: alignment is everything. If your lamp is off by even a couple of millimeters, the focal point of that gold reflector shifts. Suddenly, you’ve got cold spots on your wafer, and you’re back to square one. We suggest using rigid mounting brackets. They keep the lamp locked down tight, even if your system vibrates. That’s how you keep the heat consistent across the entire sensor surface, every single time.

Photoresist drying infrared module

Mon, 01 Jun 2026 20:35:30 +0800

On the fab floor, a soft bake that drifts even half a degree can throw off critical dimension control and leave scum after development. There’s no room for guesswork anymore. We built the photoresist drying infrared module to take that variability out of the equation, giving you repeatable thermal behavior when wafer-level uniformity and cleanroom discipline are the only acceptable standard. What actually matters under the hood We run short-wave infrared with halogen-free quartz emitters, dumping energy straight into the resist film. The payoff is wafer-level uniformity within ±0.1°C across the bake surface, and temperature setpoints that stay locked through the entire soft bake and hard bake window. The module sits in Class 1–100 cleanrooms without hiking particle counts, because the emitter layout and airflow path keep turbulence down and prevent particulate shedding. After 5,000+ hours, intensity drift stays under 5%, so the thermal budget on every lot stays consistent. Why it holds up in lithography On the litho line, the module cuts bake time while tightening CD distribution and knocking down defects from residual solvent. You end up with tighter process control, fewer rework lots, and a line-of-sight to spec that stays steady. Energy use drops because infrared heats the resist directly, not the chamber walls. Reliability is built around 24/7 operation, with predictable maintenance windows and none of the downtime that comes from thermal cycling instability. What you need to plan for The module drops into existing coat/bake tracks through standard mechanical and electrical interfaces, but the compact footprint means you need to think through airflow and exhaust routing up front. Commissioning is short—you’ll tune lamp power, dwell time, and the temperature feedback loop to match your resist stack. Once it’s dialed in, the process window tightens and the bake signature becomes something you can count on, lot after lot.