Display Panel Microstructures for Uniform RGB Light Extraction

The patent applies local quality by configuring different surface microstructures for light emitting elements of different colors. Specifically, red, green, and blue light emitting elements are given distinct surface microstructure types (first, second, and third types respectively), allowing each color to have optimized light extraction characteristics tailored to its specific wavelength and extraction efficiency requirements, thereby resolving the uniformity issue without requiring complete redesign of all elements

The patent segments the manufacturing process into distinct growth stages for different color light emitting elements. By growing red, green, and blue elements separately on the same substrate with different surface microstructures, the patent enables independent optimization of each color's light extraction efficiency while maintaining a unified substrate structure, thus improving precision without proportionally increasing overall complexity

The patent achieves universality by using a single substrate that can support multiple types of surface microstructures simultaneously. The substrate serves multiple functions: it provides mechanical support, enables selective growth of different light emitting elements, and accommodates diverse surface microstructure configurations. This multi-functionality allows improved color display quality without requiring separate manufacturing systems for each color type

The patent implements local quality by applying specific surface microstructure types to specific color regions during the growth process. Red light emitting elements receive first type surface microstructures, green elements receive second type, and blue elements receive third type. This localized differentiation improves color display quality while the systematic approach to assignment keeps the manufacturing process manageable