Hydrophilic-Hydrophobic Surface Patterned Color Conversion Layer

The first layer surface is divided into hydrophilic regions and hydrophobic regions with different surface properties. The hydrophilic regions provide strong adhesion for the color conversion layer containing quantum dots, while the hydrophobic regions prevent unwanted adhesion in non-pattern areas. This local differentiation of surface properties enables selective bonding and achieves both strong adhesion where needed and ease of manufacture through self-patternning.

Surface treatment compounds are introduced as intermediaries between the first layer and the color conversion layer. These compounds modify the surface energy and chemical properties of the first layer, creating specific interaction sites that facilitate strong adhesion of the color conversion layer while maintaining manufacturability through controlled surface chemistry.

The first layer surface exhibits local quality differences through hydrophilic and hydrophobic regions. During the dipping process, the color conversion layer selectively adheres to hydrophilic regions while repelling from hydrophobic regions, achieving automatic patterning without residue. This eliminates the need for complex masking or lithography processes.

The surface treatment structure enables the system to self-pattern during the dipping process. The hydrophilic-hydrophobic contrast on the first layer surface automatically guides the formation of the color conversion layer pattern without requiring external patterning tools or complex processing steps, achieving high manufacturing precision through self-organization.

The first layer surface is treated to create spatially differentiated regions: hydrophilic regions with high adhesion strength for bonding the color conversion layer, and hydrophobic regions with low adhesion for preventing residue formation during patterning. This local quality differentiation simultaneously achieves strong adhesion where required and clean patterning where required.

The hydrophobic regions, which might seem to reduce overall adhesion, are converted into a beneficial feature that prevents residue formation during patterning. The differential adhesion between hydrophilic and hydrophobic regions is exploited to achieve clean pattern separation, turning what could be a disadvantage into an advantage for manufacturing precision.