Foldable Display Shock Absorber Cutting to Minimize Carbonization

The laser cutting process is divided into multiple sequential passes instead of a single high-energy cut. Each pass removes a portion of the material with lower energy density, preventing excessive heat accumulation and carbonization while achieving the desired cut depth and precision through cumulative effect.

The laser oscillation is performed periodically with controlled duty cycles, alternating between active cutting phases and pause phases that allow heat dissipation. This periodic action prevents continuous heat buildup in the polymer base layer, reducing carbonization and maintaining material integrity for reliable folding.

Instead of using excessive high energy density in a single pass, the method applies partial action through multiple low-energy passes. Each pass contributes to the overall cutting depth without exceeding the energy threshold that causes severe carbonization, achieving sufficient cutting speed while minimizing damage through cumulative partial removal.

The laser beam rapidly oscillates back and forth along the cutting path, spending minimal time at each location. This rushing through approach delivers the necessary cumulative energy for cutting while preventing localized overheating and carbonization by continuously moving the energy input along the cut line rather than concentrating it.