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How OLED Works

At first glance, OLED and QLED TVs don’t look much different. However, if you are familiar with their technical characteristics, you can immediately distinguish the two panels.

On an OLED TV, each image dot consists of two electrodes. One of them is transparent. Between the electrodes are semiconductor layers, the glow of which is regulated by the strength of the current.

Each dot of the image glows on its own. Compared to LCD screens, this display does not require a backlight, which allows OLED panels to be very flat. In addition, OLEDs boast higher contrast and deeper blacks: pixels are simply not illuminated to create black.


How QLED works

Samsung has developed QLED based on TN matrices. The technology eliminates many of the shortcomings of OLED, but it also has its drawbacks.

The so-called quantum dots work on a QLED display. These are nanocrystals made of semiconductor materials that absorb light and then emit it again.
The color of a pixel depends on the size of the quantum dot core. Accordingly, you can set up a QLED display even more accurately than OLED.

However, QLED technology is based on a conventional LCD matrix, since quantum dots need a backlight.

According to the assurances of the developers, that is, Samsung, QLED displays overtake OLED in terms of contrast and brightness. Even if you look at the QLED screen at a very wide angle, the image will not appear darker. In addition, these monitors cover the DCI-P3 color space, which allows you to use the colors in the digital cinema standard.

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QLED vs. OLED: which is better?

While LG, Sony and Panasonic are betting on OLED, their competitors Samsung, Hisense and TCL are focusing on QLED. Today it is difficult to say whether any of these technologies will come to the fore in the future.

At the moment, OLED is used on smartphones and on many TVs. However, large OLED TV monitors are relatively expensive to manufacture. However, richer blacks, faster response times, and lower power consumption are major benefits.

Samsung developed QLED technology mainly for cost reasons. Such matrices consume slightly more power than OLED, but at the same time they have higher brightness and, therefore, contrast. If in the long term QLED becomes even cheaper to produce, and if Samsung fixes the existing flaws in its sensors, the technology could become dominant in the TV industry.

However, nowadays both OLED and QLED have their own individual strengths, so the overall assessment cannot say that one technology is better and the other is worse.

Read also:

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