Reflective LED Structure for Wider Beam Angle Uniformity

The patent applies local quality by creating non-uniform reflective structures around each LED. The reflective microstructures are positioned at specific locations (closer to the LED on certain sides) to redirect light laterally, while the light reflective layer on the top surface reflects light downward. This localized variation in reflective properties ensures that light is redistributed uniformly across the entire light board area, compensating for the increased pitch between LEDs.

The patent introduces reflective microstructures and a light reflective layer as intermediary elements between the miniaturized LEDs and the light board. These intermediaries capture and redirect light from the small LED sources, transforming the difficult-to-control direct emission into a more uniform distributed pattern. The reflective structures act as mediators that simplify the overall light distribution control despite using fewer, smaller LEDs.

The patent merges the light reflection function into the substrate structure itself by integrating reflective microstructures and a light reflective layer directly onto the light board. This consolidation eliminates the need for separate, complex optical components while achieving the desired beam angle widening and light uniformity improvement. The reflection function is combined with the substrate, reducing overall device complexity.