Flexible OLED Display Using Ultra-Thin Glass Substrate

The patent uses a composite structure consisting of a plastic substrate combined with multiple inorganic barrier layers (SiOx, SiNx, AlOx) and organic buffer layers. This composite material approach allows the substrate to maintain flexibility while the inorganic layers provide effective barrier properties against water and oxygen permeation, resolving the contradiction between flexibility and barrier characteristics.

The patent employs thin film encapsulation technique where multiple thin inorganic and organic layers are deposited on the plastic substrate. These thin films provide barrier functionality while maintaining the overall flexibility of the substrate, enabling the display to be bent without compromising either flexibility or barrier performance.

The patent uses thin film encapsulation with multiple alternating inorganic and organic layers deposited in sequence. Each layer is kept thin to maintain overall flexibility while the multi-layer structure provides effective barrier properties. The thin films collectively prevent water permeation without significantly increasing total thickness, thus preserving flexibility.

The alternating structure of inorganic barrier layers (SiOx, SiNx) and organic buffer layers creates a composite multi-layer system. This composite approach provides synergistic effects where inorganic layers block water molecules while organic layers provide stress relief and adhesion, achieving high barrier performance with controlled thickness.

The patent employs a composite multi-layer structure with alternating inorganic and organic layers. This composite design achieves low water vapor transmission rate through the synergistic barrier properties of multiple materials rather than relying on a single thick layer, thereby reducing overall structural complexity while maintaining effective barrier performance.

The barrier function is segmented into multiple thin alternating layers of different materials (inorganic SiOx, SiNx and organic buffer layers) rather than using a single thick barrier layer. This segmentation allows each layer to contribute specific properties (barrier, adhesion, stress relief) and simplifies manufacturing by enabling deposition of thin layers using standard techniques.