How does an LED display work?
LED is an abbreviation for Light Emitting Diode. An LED emits light from electric luminescence. It is also known as “cold light,” as the light is not produced by heating a metal filament. An LED display comprises many closely-spaced LEDs. By fluctuating the brightness of each LED, the diodes together form an image on display. LED emits light when passing through two specially coated silicon semiconductors. It is one of the most energy-efficient and power-saving ways to generate light. When an LED is on, it emits zero heat. This almost eradicates the problem of cooling down the electronic parts.
There are two main types of LED display – backlit displays that utilize an array of LEDs to light the screen and LED screens that operate by emitting light in RGB colors right from the face of the display. RGB is short for Red, Green, and Blue. A color scheme considers that all visible colors can be mixed from these three primary colors. It is used in almost all types of displays. These three colors blend to form a pixel. By altering the intensity of the diodes, lots of colors can be formed. When you look at the LED screen from a certain distance, the array of colored pixels is seen as an image.
There are three main configurations of LED screens for domestic and commercial use:-
Direct-Lit – This is the most suitable configuration and uses a limited amount of LEDs. Since these are wider and can’t be controlled individually, they provide less of a complex image. However, they are perfect for larger, more affordable displays where a higher definition is not required. These screens tend to be quite deep, as the space required behind the screen to fit the larger LEDs and diffusers.
Edge-Lit – This is the most widely used form of the LED screen. In this configuration, LEDs are positioned only at the screen edges, enabling the screens to be thinner. Although there are fewer LEDs in this configuration than in comparison to the entire array, there might have problems with dynamic lighting if your screen hasn’t been properly configured.
Full-Array – Well, this is the most sought-after type of LED backlighting and expensive from the point of manufacturing. The LEDs are allocated evenly to produce a more consistent light, which allows for more dynamic colors and lighting. Some full array LED screens also use colored LEDs, which enable an even broader and deeper range of colors.
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