Display Panel Spacer Recess for Light Leakage Prevention

The patent introduces a recess structure at specific locations on the substrate where spacers are positioned. This local structural modification creates a depression that accommodates the spacer, preventing it from moving laterally under external forces. The recess is formed only in specific inter-sub-pixel regions rather than uniformly across the entire substrate, allowing the thin cell design to maintain stability at critical points while preserving overall transmittance.

The recess structure is pre-formed on the substrate before the spacer is positioned. This preliminary structural preparation creates a predetermined accommodation space that guides and secures the spacer in the correct position. When external forces are applied, the spacer remains constrained within the recess boundaries, preventing it from sliding into sub-pixel regions and disrupting the alignment layer.

The recess structure, which initially appears to be an additional manufacturing step, actually simplifies the overall system by eliminating the need for complex spacer retention mechanisms. The recess passively constrains the spacer through its geometric boundaries, converting the potential harm of spacer displacement into a beneficial self-aligning feature that prevents light leakage and bright spots without requiring active control systems.