What is the difference between led backlit screen and a led screen

An LED display generates an image by making each pixel a direct composite of three different colors of LEDs: red, green, and blue.

It produces perfect black levels by completely shutting down all pixels, producing no light whatsoever. In this way, a laptop with an LED display can offer a particularly high contrast range and color depth.

Then filtered into small segments of red, green, and blue light. After which, the small colored sections are selectively turned on with variable magnitudes to pass through the front of the display. This diffusion of white light paired with the tiny pixels allows for a more fluid display that you can view up close, as in a TV or a computer display. However, since the white light source is always enabled, the ability to completely turn off light is limited un-like LED displays.

Some light will always leak through a disabled pixel , so the achievable black level is reduced. The energy efficiency of LED-lit displays is also less than an LED display because the white light source always remains enabled, even when the display is supposed to be black.

Moreover, light energy is lost in the process of diffusion, filtering, and magnitude adjustments, which results in even lower efficiency. The latest generation of flagship smartphones all feature OLED screens, and it is a contributing factor to their massive cost. Another consideration is power. So, what is a quantum dot monitor? In short, quantum dots are semiconductor nanocrystals that absorb light at one wavelength and output it at a different wavelength.

But a blue picture isn't what consumers want. The quantum dots refract the blue LED light into the green and red shades needed to complete the picture. A single quantum dot monitor or TV contains billions of semiconductor nanocrystals. Those nanocrystals give QLED screens outstanding black range and color depth, as well as excellent color saturation and contrast.

If you're wondering where the "quantum" aspect comes into it, I'm sorry. There isn't anything quantum taking place. It is just Samsung's exciting marketing name. The type of LCD tech powering your screen makes a difference to the final picture.

Here's what you need to look out for. TN panels have fast response time. That level of refresh isn't necessary for most people, but it can make a difference for top-level gamers for instance, in reducing motion blur and image transition smoothness.

Vertical alignment VA panels originated in the s. The liquid crystals in a VA panel are aligned vertically, as the name suggests. The vertical alignment structure allows VA panels to produce much deeper blacks and more vibrant array of other colors in comparison to a TN panel.

In addition, they claim that their LED lit screen offers better colors. The LED have far better display panel in the prospective of eye safety, picture quality, and power consumption.

The LED backlighting is smaller and much safer for the eyes. In short, yes. LED screens that are popular these days emit a great deal of blue light, which can be potentially harmful to the eyes. Therefore, watching too much TV, especially late at night, can suppress melatonin production that makes us ready for sleep.

The warm light of 2, to 3, K will help you relax while reading and rest better after that. The natural light of 4, to 6, K is the best solution for eyes that allows comfortable work. The cold light of 6, K offers an excellent level of brightness and improves overall attention.

When you are watching television in a dark room, your eyes must constantly adjust to the different lighting. Support UI. X Donate Contact us. New posts Trending Search forums. What's new. New posts New profile posts Latest activity. Current visitors New profile posts Search profile posts Billboard Trophies. Forums Hardware Displays. JavaScript is disabled.

For a better experience, please enable JavaScript in your browser before proceeding. Previous Next Sort by votes. Arbegust Distinguished. Nov 6, 54 0 18, 0. Why not just get an LED? If I'm not mistaken it would have a better contrast ratio and possibly a higher refresh rate. If I'm missing something obvious and seem ignorant I apologise. Any feedback would be great. GreenDutchAlien Splendid. Aug 5, 3, 0 23, Refresh rate is the same i think, has nothing to do with the form of lighting.

LED obviously uses less electricty and is a better light source. Nov 15, 0 18, 0. What you have on your mind is an OLED display. Reason would be then that a full led is more expensive. Sep 17, 7, 0 31,