Light Conversion Layer and Color Filter for Display Devices

The patent combines the light conversion layer and color filter layer into a single integrated structure on the same substrate. The conversion filters (containing conversion particles) and color filters are formed in sequence on the first substrate, merging two previously separate components into one unified assembly. This reduces device complexity while maintaining improved color reproduction characteristics through the combined light conversion and filtering functions.

The patent uses conversion particles (a type of composite material) within the conversion filters to achieve wavelength transformation. These conversion particles are embedded in a matrix material, creating a composite structure that converts blue light into red and green light. This allows the system to achieve superior color reproduction without requiring multiple separate layers, thereby managing device complexity.

The patent performs preliminary patterning of the light blocking layer before forming the color filter layer. By establishing the light blocking pattern first, subsequent color filter formation can be precisely aligned to the desired pixel regions. This preliminary action ensures manufacturing precision while the sequential formation process (light blocking layer first, then color filter layer) is optimized to minimize the total number of steps.

The manufacturing process is segmented into distinct sequential steps: first forming and patterning the light blocking layer, then forming the color filter layer in subsequent steps. This segmentation allows each layer to be optimized independently while maintaining overall precision. The segmentation into formation of conversion filters and color filters as separate but sequential operations enables precise control without excessive complexity.