LED backlight sources are essential components in modern display technology, providing the necessary illumination for LCD panels. These LEDs are placed behind or around the display screen's edges, enhancing brightness, colour accuracy, and energy efficiency. Compared to traditional fluorescent backlights, LED backlighting offers superior performance with a thinner design, longer lifespan, and lower power consumption. There are two main types of LED backlighting: edge-lit and direct-lit. Edge-lit LEDs are positioned along the screen's edges, while direct-lit LEDs are spread evenly across the entire screen. LED backlight source have revolutionized the display industry, improving the overall visual experience.