Barrier Uneven Structure for Flexible OLED Encapsulation Peeling

The invention introduces an uneven structure with curved surfaces on the barrier surface instead of a flat surface. This curvature increases the contact area and mechanical interlocking between the barrier and encapsulation layer, preventing peeling while maintaining encapsulation performance.

The uneven structure creates local variations in surface properties at the barrier-encapsulation interface. By modifying only the contact surface with unevenness while keeping other areas unchanged, the bonding strength is enhanced locally without affecting the overall encapsulation structure or performance.

The uneven curved structure on the barrier surface prevents the formation of continuous passages by creating a mechanically interlocked interface. This curvature ensures that even under stress, the encapsulation layer remains adhered to the barrier, blocking water and oxygen ingress paths.

The uneven structure acts as a preventive measure before peeling can occur. By creating mechanical interlocking in advance through the uneven surface geometry, the structure cushions against peeling forces that may arise during device operation or environmental exposure.