Color Conversion Substrate Light Blocking for Hidden Align Keys

The light blocking member is segmented into multiple light blocking layers (first, second, and third layers) that are disposed at different positions in the peripheral area. Each layer can be independently configured with openings or solid structures, allowing selective blocking of external light paths to the align key while maintaining alignment functionality. This segmentation enables precise control over light blocking without requiring a completely opaque structure.

The patent introduces a vertical dimension by stacking multiple light blocking layers at different heights (different z-coordinates) within the peripheral area. Instead of using a single planar light blocking layer, the solution distributes blocking functionality across multiple vertical levels, creating a three-dimensional light blocking structure that more effectively prevents external light from reaching the align key while allowing alignment verification through openings in specific layers.

The light blocking structure is divided into multiple layers with strategically placed openings. Some layers have openings to allow alignment verification, while other layers provide light blocking. This segmented approach enables both alignment verification and light blocking functions to coexist by distributing these conflicting requirements across different layers rather than requiring a single layer to perform both functions simultaneously.

The multiple light blocking layers act as intermediary structures between the external environment and the align key. The openings in these intermediary layers allow necessary light transmission for alignment verification, while the solid portions of the layers serve as mediators that block harmful external light paths. This intermediary structure enables controlled light interaction that satisfies both alignment verification and light blocking requirements.