Laminate Surfactant Copolymer Suppresses Liquid Crystal Alignment Defects

A surfactant copolymer is introduced as an intermediary substance between the optical alignment layer and the liquid crystal layer. This copolymer contains both a mesogenic group (which interacts with liquid crystal molecules) and a fluorinated alkyl group (which provides surfactant properties). The surfactant acts as a mediator that enhances the aligning regulation power of the optical alignment layer, enabling effective alignment transfer while preventing alignment defects in the liquid crystal layer.

The invention changes the chemical composition parameters of the liquid crystal composition by incorporating a surfactant copolymer with specific molecular structure (containing mesogenic groups and fluorinated alkyl groups). This parameter change in composition enables the liquid crystal layer to achieve proper alignment on the optical alignment layer by modifying the interfacial interaction properties and enhancing alignment stability.

The surfactant copolymer serves as an intermediary that amplifies the aligning regulation power of the optical alignment layer. By incorporating mesogenic groups that interact strongly with liquid crystal molecules and fluorinated alkyl groups that provide surfactant functionality, the copolymer enhances the optical alignment effect without requiring mechanical rubbing treatment.

The invention uses a composite material approach by creating a surfactant copolymer that combines two functional components: mesogenic groups (for liquid crystal alignment) and fluorinated alkyl groups (for surfactant properties). This composite molecular structure provides both the simplicity of optical alignment and the sufficient aligning regulation power that would otherwise require mechanical rubbing.