Reactive Mesogen Alignment Layer for Display Afterimage Reduction

The patent applies preliminary action by performing full photopolymerization of the reactive mesogen during the alignment layer formation process. The alignment solution containing reactive mesogen is coated on the substrate, then irradiated with UV light to completely polymerize the reactive mesogen before liquid crystal injection. This ensures no unreacted reactive mesogen remains to cause unwanted crosslinking and afterimage effects during display operation.

The patent converts the potentially harmful unreacted reactive mesogen into a beneficial fully polymerized alignment layer. By controlling the photopolymerization process to achieve complete reaction, the reactive mesogen that could cause harm (unwanted crosslinking, afterimages) is transformed into a stable, crosslinked alignment structure that provides reliable liquid crystal alignment without degradation during operation.

The patent uses composite materials by combining the reactive mesogen with a polymer matrix in the alignment solution. The reactive mesogen undergoes photopolymerization to form a crosslinked network structure within the polymer matrix, creating a composite alignment layer that enhances mechanical integrity while maintaining the alignment function. This composite structure prevents the alignment layer from deteriorating during display operation.

The patent applies parameter changes by controlling the photopolymerization process parameters (UV irradiation intensity, exposure time, temperature) to achieve complete crosslinking of the reactive mesogen. By optimizing these parameters, the alignment layer achieves maximum mechanical strength and stability, transforming the soft uncured alignment solution into a rigid, mechanically intact alignment layer that resists deterioration.