OLED Light Extraction Substrate with Dual-Texture Thin Film

The patent replaces the photolithography process (mechanical/chemical system) with a self-assembling molecular system. The chiral guest molecules automatically form helical structures within the host matrix upon heating, eliminating the need for complex photolithography equipment and multiple patterning steps while achieving the same light extraction enhancement through helical morphology.

The light extraction layer performs self-organization through the self-assembling behavior of chiral guest molecules. When heated above the melting point, the guest molecules spontaneously form helical structures distributed throughout the host matrix, creating the desired light-scattering morphology without external intervention or complex processing.

The patent replaces expensive photolithography equipment and materials with a simple thermal processing step. The self-assembling molecular system requires only heating above the melting point of the guest molecules, eliminating the need for expensive photolithography tools, photoresists, and cleanroom facilities, thereby dramatically reducing manufacturing costs.

The patent changes the processing parameter from requiring precise photolithographic patterning to simply controlling temperature above the melting point of guest molecules. This parameter change from optical patterning to thermal processing simplifies manufacturing and reduces equipment costs while achieving the same functional outcome.

The patent creates a composite light extraction layer combining a host matrix material (providing mechanical strength and thermal stability) with chiral guest molecules (providing helical morphology for light extraction). This composite structure achieves both high light extraction efficiency through helical scattering and superior reliability from the robust host matrix, overcoming the limitations of pure polymeric films.

The patent assigns different functional roles to different components: the host matrix provides mechanical and thermal properties throughout the layer, while the guest molecules provide localized helical structures for light scattering. This functional differentiation allows the material to simultaneously achieve high light extraction efficiency and excellent mechanical/thermal endurance.