OLED Encapsulation with Cross-linked Polyorganosiloxane

The patent uses a composite encapsulation structure combining inorganic film (moisture and oxygen barrier) and organic film (surface flattening and stress release) to achieve both barrier properties and mechanical performance while managing complexity through functional specialization of each layer

The encapsulation layer is divided into multiple functional sub-layers (inorganic and organic) where each layer performs a specific function, allowing the system to achieve superior overall performance without requiring a single complex material to handle all requirements

The patent modifies the chemical composition and molecular structure parameters of the organic material to reduce water absorption and improve adhesion while preserving the surface flattening and stress release properties that make organic films valuable in the encapsulation structure

The patent introduces adhesion promoters or surface treatment layers as intermediaries between the organic and inorganic films to enhance interfacial adhesion, allowing the organic film to maintain its surface flattening function while achieving reliable bonding to the inorganic layer

The patent employs thin-film encapsulation technology that provides effective moisture and oxygen barrier properties through optimized thin layer structures, enabling flexible OLEDs to maintain both protection and flexibility/rotatability required for wearable and foldable applications

The patent combines inorganic and organic films in a multi-layer stack where the inorganic layer provides barrier properties and the organic layer provides flexibility and stress management, achieving a balance between protection and mechanical compliance for flexible devices