http://ir-glass-heat.com/en/tags/sapphire/ Recent content in Sapphire on Infrared Glass Heating Technology Hugo en-us Mon, 08 Jun 2026 05:09:03 +0800 http://ir-glass-heat.com/en/posts/sapphire-wafer-processing-heater/ Mon, 08 Jun 2026 05:09:03 +0800 http://ir-glass-heat.com/en/posts/sapphire-wafer-processing-heater/ <p><img src="http://ir-glass-heat.com/images/e619a459508a95cd74ea4eae0be40cd1.png" alt="Sapphire wafer processing heater"></p> <p>On the fab floor, that 2-inch sapphire wafer is sitting under the lithography track, waiting on a Soft Bake. You need 110°C across the entire surface, not just what the thermocouple reads. Anything lower and the photoresist profile drifts. Push it higher and you&rsquo;re burning into your thermal budget.</p> <h2 id="what-actually-matters-technically">What actually matters, technically</h2> <p>The heaters we use for sapphire wafer processing are short-wave infrared (SWIR) quartz emitters. They dump heat directly and fast, with very little thermal inertia. Wafer-level uniformity holds at ±0.1°C across the chuck, and shift-to-shift repeatability stays within ±0.2°C. The platform is compatible with Class 1–100 cleanrooms, and the parts are chosen so particle generation stays at zero during steady-state running. You get 24/7 reliability with no unplanned <a href="https://o-yate.net">downtime</a>, and the photoresist bake profiles are repeatable enough to keep line width control locked down.</p>