Difference Between LEDs and QLEDs (With Table)

Entertainment has always played an integral part in humans’ lives; every person needs some entertainment to overcome stress. The most revolutionizing form of entertainment for humans was the televisions that changed everything how we see things. Started in the 1920s, with the invention of the first television octagon that changed the form of entertainment, that enable LED sound and video to play simultaneously; it was simple tv enclosed in a wooden box with the smallest screen possible and a speaker.

In the 1950s came the full-screen televisions with the same rigid structure but with the launching of Sony’s television in the late 1990s was considered the best tv with two speaker bars, a full screen and features like a headphone jack, remote control, etc.

In 2007 Samsung launched its first LCD with a bigger screen than ever, a complete sound surround system, HDMI ports, audio-video ports, etc.

Today smart TVs are in a trend that comes with the most advanced screens that are QLED’s and LED’s which have evolved to a next level and gives the viewer a better visual experience than what we saw in the past with more advancement of colors, ultra-high-definition resolution which was only possible with using of LEDs and QLEDs in televisions.

LEDs vs QLEDs

The difference between LEDs and QLEDs is That LEDs are more or less the better substitute to the LCDs which were used earlier; on the other hand, the QLEDs are the most advanced form of vision that humanity has seen to date that delivers an outstanding picture quality than LED tv. Which is the fact that QLEDs are more expensive than LEDs.

The quality is always judged based on the blacks and whites produced in a television meaning more blacks delivered the more generous of quality, which ultimately becomes the fact that QLEDs can give deep blacks and creamy white color than LEDs, which uses RGB colors.

Comparison Table Between LEDs and QLEDs

Parameters of ComparisonLEDsQLEDs
Full FormLight Emitting DiodeQuantum Dots Light Emitting Diode
Picture QualityDelivers slightly flawed colors and resolutionDelivers a rich color quality with high definition
BrightnessDelivers an excellent brightness with less power consumptionBrightness is slightly off in comparison to LEDs
Power ConsumptionConsumes a great amount of powerLess power consumption
Technology usedUses light-emitting diode to backlit the tvUses quantum dot technology to emit light
CostGenerally cheaper than QLEDsExpensive than LEDs

What is LED?

LED lights stand for light-emitting diode, which is a semiconductor that glows when current passes through it. LED was used for many purposes like the LED bulb, but today LED is being used in televisions. LED was a replacement to LCD that uses compact fluorescent lamps to emit the light behind the televisions.

But LED was the better alternative because it produces more dynamic and contrasting colors. LED produces the highest amount of brightness and consumes less power than LCD using of LED made it possible for the televisions to be even thinner LED comes in two forms.

First, a dynamic RGB LED that is placed behind the panel. second, white edge LED that are positioned along the screen rim using a specific diffusion panel to disperse the light equally behind the screen.

 LED TV also produces deep black and rich white colors than LCD’s (liquid crystal display)that produced stale colors.

LED was created by accident in 1962 by Nick Holonyak and HP (Hewlett Packard) created the first LED display in 1968.

What is QLED?

QLED stands for Quantum dots light-emitting diode, which sounds futuristic but was first marketed by Samsung which was used in the new television models.

 It was a much better alternative than LED and was marketed by Samsung as the best display that humanity can experience. 

It uses quantum dots technology to produce high contrasting colors, rich and high-definition picture quality.

 By adding an extra layer of tiny particles in front of a regular LED backlight panel that resulted in great resolution. The brightness of a QLED television or display is usually lower than what an LED display produces, but QLED televisions or displays use less power consumption produces stale brightness.

Still, it provides the user with high contrasting and rich colors, Samsung marketed QLED as the next generation picture viewing experience that caught an eye by the consumers. It might sound related to OLED. Still, it uses a different type of technology that enables the display to produce a billion colors and give the viewer a cinematic experience QLEDs produces deep blacks and rich white color contrast.

Samsung tried to make a display in which the viewer can experience the best and live the moment, and with quantum technology, it was made possible. Samsung made it possible to produce 8K resolution.

Main Differences Between QLEDs and LEDs

  1. Displays quality is tested with the blacks and whites, QLEDs can produce the deeper blacks and rich whites, making it the best display whereas LED panel produces stale black and white.
  2. The colour levels are undoubtedly the best in QLED panel as it uses quantum dot technology enabling each pixel to light up on its own giving the viewer the rich colour viewing experience whereas LED panel uses RGB technology and producing satisfactory colours.
  3. Viewing off angles are not relevant on both televisions as moving far, and sitting on off-angle obstructs the view making it hazy, but at some level, QLED might be able to give an off-angle experience whereas LED fails to do so.
  4. Brightness on a LED panel reaches its maximum peak without drawing high power, but at some point, the tv tends to reduce brightness to save power whereas QLED uses a different technology and fails to reach the highest brightness point thus making the LED panel a much higher brightness panel.

Conclusion

It is clear from the above that both the panels come with its pros and cons but out of all QLED panel is able to deliver the highest colour contrast and high definition it also enables the viewer the to view picture off-angle. It is a perfect blend of blacks and whites. LED panels only produce high brightness but in the end, fails to produce rich colours and also produce stale blacks and whites.

References

  1. http://oastats.mit.edu/handle/1721.1/81887
  2. https://onlinelibrary.wiley.com/doi/abs/10.1002/adma.201800764