LED Illumination System with Series Arrays and Switching Blocks

The patent divides the LED array into multiple groups that can be independently controlled. Each group contains a different number of LEDs connected in series, allowing them to have different threshold voltages. This segmentation enables staggered activation of LED groups as AC voltage increases, preventing simultaneous on/off operation and reducing flicker effects while maintaining continuous illumination.

The patent employs dynamic switching blocks that automatically adjust their state based on the instantaneous AC voltage level. Each switching block monitors the voltage across its associated LED group and transitions between on/off states dynamically as voltage varies during the AC cycle. This dynamic control extends light emission time by keeping LEDs in optimal operating states while avoiding the need for complex external control circuits.

The switching blocks are designed to automatically regulate current flow through their associated LED groups based on local voltage conditions without requiring external control signals. Each switching block independently monitors its own operating conditions and adjusts its state to maintain constant current flow through the LEDs, ensuring optimal light emitting efficiency while eliminating the need for complex centralized control systems.

The patent integrates delay phosphor materials directly into the LED chip structure or positions them in immediate proximity to the LED emitters. This merging of the phosphor conversion layer with the LED array structure allows the phosphor to convert LED light output and extend emission duration, reducing flicker effects. The integrated approach simplifies manufacturing compared to separate phosphor coating processes and ensures precise spatial alignment between LEDs and phosphor materials.