In displays and screens, LEDs are mainly used as backlights. LED backlight provides bright backlight, making images and content clearly visible on the display. There are two common LED backlight technologies used for displays and screens: Direct LED backlighting: In this technology, LEDs are evenly distributed behind the entire display. LEDs are arranged in rows of backlight modules, each containing multiple LED lights. When the backlight is on, the light will be transmitted and adjusted through the pixels of the LCD screen, forming an image. The straight down LED backlight provides relatively uniform brightness and contrast, and has good energy consumption control ability. But compared to edge LED backlight, the design of straight down LED backlight may be thicker and more energy-efficient. Edge LED backlighting: Edge LED backlighting is a common technology where LED lights are installed on the edge of the display instead of the entire back. Light is distributed across the entire screen surface through a light guide or optical waveguide. Edge LED backlight is usually thinner, allowing the display to be designed to be lighter and thinner. One of the advantages of edge LED backlighting is that it can achieve high brightness and contrast, and can provide uniform backlight throughout the entire screen. However, due to the distribution of light, edge LED backlighting may cause uneven brightness or light leakage issues at the edges of the screen. Both direct down LED backlight and edge LED backlight provide high brightness, high contrast, and low energy consumption. In addition, the LED backlight source also has adjustable brightness, which can be adjusted according to needs to achieve better picture quality and energy-saving effects. The specific model of light-emitting diodes (LEDs) used in displays can vary depending on the manufacturer and model. Different monitor brands and models may use different types of LEDs. The following are some common types of display LEDs: Blue LED: Blue LED is one of the most common types of LED, which generates blue light and is converted into other colors, such as white light, through fluorescent materials. White LED: White LED is composed of a mixture of blue LED and yellow fluorescent material, producing white light similar to natural light. RGB Light Emitting Diodes (RGB LEDs): RGB LEDs are composed of three basic colors of LEDs: red, green, and blue. They generate various colors by adjusting the brightness and mixing of different colors. Red LED, Green LED, and Yellow LED can also be used for specific display applications, such as displays with specific color requirements or special effects.