What is the local dimming function on the TV?
Local dimming is a feature found on some LED TVs that allows the TV to adjust the brightness of the backlight behind the screen on a pixel-by-pixel basis. This can be used to enhance the contrast and black level of the picture, making dark areas appear darker and more detailed.
Local dimming is achieved by dividing the backlight into smaller zones and controlling the intensity of each zone independently. For example, if a scene has a bright object in the center of the screen and a dark background, the local dimming feature will increase the brightness of the backlight in the center of the screen and decrease it in the surrounding areas, resulting in a higher contrast ratio.
Local dimming is generally considered a premium feature and is found on higher-end LED TVs. Local dimming can significantly improve the picture quality of certain types of content, such as movies or TV shows with a lot of dark scenes. However, it can also introduce some artifacts, such as halos around bright objects or uneven lighting in certain scenes.
Mini LED backlighting
Mini LED backlight is a technology used in LED TVs that uses smaller LED lights to backlight the screen. It is similar to traditional LED backlighting, but the size of the LED lights is significantly smaller, typically in the range of 200-500 microns. This allows for a higher density of LED lights to be used in the backlight, which can improve the contrast and black level of the picture.
The use of Mini LED lights in the backlight also allows for more precise control of the backlight, which can be used to enhance the local dimming feature on the TV. With traditional LED backlighting, the size of the LED lights limits the number of zones that can be used for local dimming, which can result in some loss of detail in dark areas of the picture. Mini LED backlighting allows for a higher number of dimming zones, which can improve the detail and clarity of dark areas of the picture.
Mini LED backlighting it’s also a more expensive technology to implement, so TVs with Mini LED backlighting tend to be more expensive than those with traditional LED backlighting.
What is Full-Array backlighting?
Full-array backlighting is a technology used in LED TVs that uses an array of LED lights to backlight the entire screen. This is in contrast to edge-lit TVs, which use a strip of LED lights along the edges of the screen to backlight the display.
One advantage of full-array backlighting is that it allows for more precise control of the backlight, which can be used to enhance the local dimming feature on the TV. With full-array backlighting, the LED lights are distributed evenly behind the screen, which allows for a higher number of dimming zones and more precise control over the brightness of different areas of the screen. This can result in a higher contrast ratio and better picture quality, especially in dark scenes.
Why TV “need” a Full-array backlighting, Mini LED backlight and Local dimming?
TVs use Full-array backlighting, Mini LED backlighting, and local dimming to improve the contrast and black level of the picture. These technologies allow the TV to control the brightness of the backlight behind the screen on a pixel-by-pixel basis, which can enhance the detail and clarity of dark areas of the picture.
Full-array backlighting and Mini LED backlighting both use an array of LED lights to backlight the entire screen, which allows for more precise control of the backlight and a higher number of dimming zones. This can result in a higher contrast ratio and better picture quality, especially in dark scenes.
Local dimming is a feature that allows the TV to adjust the brightness of the backlight on a pixel-by-pixel basis. It is typically used in conjunction with Full-array or Mini LED backlighting to enhance the contrast and black level of the picture. By dividing the backlight into smaller zones and controlling the intensity of each zone independently, the local dimming feature can make dark areas appear darker and more detailed.
Overall, these technologies are used to improve the picture quality of the TV, especially in dark scenes. They can enhance the contrast and black level of the picture, resulting in a more immersive and cinematic viewing experience.