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How does the LED screen work?


Have you recently purchased a new LED TV screen? Perhaps you are looking to rent an LCD screen for a company event. No matter if you have one already, LED screens can be a stunning sight.

Photo by Bram Naus on Unsplash

It has evolved from humble beginnings to become one of the most popular technologies for TVs, billboards, and indoor screens. It has many benefits that differentiate it from its peers.

Despite all the glowing reviews for LED screens, have you ever stopped to think about how they work? Continue reading to learn more about the technology behind the LED.

LCD vs. LED: Are They The Same?

First, let’s settle the LED vs. LCD debate. Are these two different? There are so many conversations about these two that confusion is not surprising.

An LED screen is, however, still an LCD. The backlight and liquid crystal display are the same as for LCD screens. The key difference between the two is the component that distinguishes them. LEDs emit light instead of using a CCFL (cold-cathode fluorescent) lamp to backlight.

A regular LCD screen uses the CCFL backlight. CCFLs have thin light tubes that lighten the liquid crystal display. Imagine fluorescent tubes but much smaller in size.

This backlight is used in conjunction with the liquid crystal display.

Main Components for LED Screens

We mentioned that LED screens are technically LCD screens. The use of LEDs is what makes them different from the CCFL LCD screen.

The same liquid crystal panel is used to control the position of the light on LED screens. These panels typically have two polarizing sheets with a liquid solution between them.

The crystals keep the light from getting through when an electric current passes through them.

The backlight, which is actually the LED, is smaller than CCFL. This allows screen manufacturers to make screens thinner than their LCD counterparts.

An LED is also more efficient than CCFLs in terms of energy consumption. The CCFL and LED have very different screen resolutions.

Edge Lighting

Important to remember that the LED screens can be divided into three different configurations. The first is edge lighting, the second is full-array, and the third is direct lighting.

Edge lighting is the most popular type of LED screen. Edge lighting is likely to be a feature of the LED TV that you just bought.

Edge lighting places the light-emitting diodes at the screen’s edges. There are many options for edge lighting configurations. Some screens have LEDs on both the left- and right-hand sides.

Others only have them at the bottom. Others have LEDs at both the top and bottom.

The picture quality will vary depending on the configuration. They will beat the CCFLs no matter what configuration you choose.

Edge lighting is preferred by most manufacturers because it is less expensive to produce.

Full-Array Backlighting

This is the best kind of backlighting for LED screens. This setup is only available in select models of LED TVs.

Full-array backlighting places the LEDs evenly behind a screen. It produces uniform backlighting. It also makes it easier to use local dimming.

This allows the LEDs to change the brightness of a particular area of the screen.

This setup also provides more uniform and precise lighting. This setup will allow you to enjoy better picture quality and energy efficiency.

Top-quality TV manufacturers also use full-array colored LEDs. This allows the wide range of colors

Direct Lighting

Direct lighting will be found in lower-end screens that use full-array backlighting. Direct lighting also places LEDs behind a screen.

These diodes, however, aren’t as numerous as those in full-array LED screens. You cannot also control the diodes individually, unlike a full-array setup. They cannot match the luminosity in the image you are viewing.

Because of this, they are unable to provide the same clarity when viewing complex images.

Direct lighting has its advantages. Direct-lit LED screens cost less than full-array screens. These screens are also a better option if you need a larger screen with fewer details.

The Pros and Cons Of LED Screens

As with all products, LED screens to have pros and cons. The most important advantage is the image quality. You can expect a better image and color quality than LCD screens using CCFL.

The contrast between LED TVs and regular TVs is even more impressive.

Another aspect is energy efficiency. LED screens can last longer than LCD screens because they are more energy-efficient than LCD screens.

They are more expensive than LCD TVs or Plasma TVs. Because of their depth, they are more difficult to mount against a wall.

However, LED screens have many uses. First, LED screens are taking over the billboard advertising landscape. Offices and government institutions also use LED screens to display information.

LED technology is also beneficial to the entertainment industry. Stadium LED screens will be used during sporting events. For concerts, some even use interactive LED floor screens.

Companies can also use mobile LED video screens for trade fairs and exhibits.

Enhance Your Tech Knowledge

Understanding the workings of LED screens will help you gain a greater appreciation for technology. This will allow you to make much better choices when looking for screens to use at work or home. You can also learn more about the other technologies shaping our world.

Check out the Dynamo LED Displays website if you do not to buy, but just to hire a led display screen.