To an average buyer, the terms QLED and OLED seem quite similar. By definition, QLED is a fancy way of saying Quantum Dots LED TV (seems like a futuristic term) whereas OLED refers to Organic LED. It’s also quite interesting to note that QLED is Samsung’s proprietary LED technology whereas OLED is LG’s proprietary technology even though it has been used in other TV brands like Panasonic, Philips and Sony.
However, do not mistake the close similarity in names to imply the same functionality.
Here are some of the main differences between OLED and QLED technology.
OLED is a display technology that involves a carbon film being placed between two conductors. These conductors pass a current through this film in order for it to emit light. Its main advantage is that the light emitted by the film is on a pixel by pixel basis. This means that white light can be emitted right next to black light, thereby giving the display its crisp clarity.
On the other hand, QLED is almost similar to OLED in functionality, but it relies on quantum dots. Theoretically, quantum dots can give out incredibly bright light (even more than OLED). The only problem is that the quantum dots in Samsung displays don’t emit their own light. Instead, they obtain light from a backlight just the way traditional LCDs do (they only do that with better colour vibrancy). Therefore, one can argue that QLED is just a refinement of the existing LCD technology.
Black levels are a great way of comparing screen technology. If the picture on your screen is able to emit pure black levels this will greatly enhance picture quality and clarity.
OLED displays produce the best black levels compared to QLED. This is because OLEDs emit light on a pixel by pixel basis (as explained earlier). This allows the display to turn off other pixels so as to provide perfect blacks.
QLED on the other hand still utilizes LCD technology. As a result, other pixels near the black levels usually spill onto the panel (because of their brightness). This has the effect of creating a not so black picture on the display.
If you are looking for brightness, then QLED is a great choice to go with. This is because QLEDs rely on LED backlights which can be very bright. Given that it also uses quantum dots, this back light can create vibrant colours and brightness that is not common in LCD TVs.
This does not imply that OLEDs are dull. However, their brightness levels are more as a result of their deep black levels. They therefore give precision displays rather than bright ones.
When it comes to colour, both OLED and QLED have astonishing displays. This is not because of their technology but because of the tweaking that manufacturers usually do on their sets before releasing it to the market.
OLED displays are generally more adaptive in various screen sizes. It scales beautifully in both small and big displays and provides picture quality across the spectrum. OLED screens have been used in phones with screens as small as 5 inches and in TVs with screens are as big as 77 inches.
It can be hard to judge QLED on this aspect, given that the technology has not been adopted widely. However, it will be interesting to find out how it will render on phones.
QLED and OLED are definitely not the same technology, but you should expect to see a lot of advancements in the near future. QLED is expected to debut a self-emitting quantum dot technology which will definitely shift the market, while OLED is increasingly being adopted in the market, thereby reducing the prices of TV sets drastically. Whichever route both of these firms take, it is the end users who will benefit a lot from it. You can also take a look at the top 10 4K TVs that utilize this technology.