Samsung, although heavily invested in OLED technology years ago, encountered several problems that prevented it from developing enough room for further development and began looking for another way. One of the problems was the degradation of the color gamut at more oblique viewing angles (the image went green, blue, etc.). The second lifespan. Organic dyes for red, green and blue have different lifetimes. Blue is lower than green and red, so if the amount of dye is set at the factory so that the TV has the right color balance and gamut, the intensity of blue will decrease over time and the color characteristics will degrade.
So with the generation of products for 2017, Samsung decided to go the other way. He has significantly invested in the development of technology, which he has been using in part of his product portfolio since 2015 and which appeared in a simpler form in 2013 in Sony’s offer under the name Triluminos. New materials have been used and, in the long term, to gradually eliminate weaknesses and promote higher resolutions. The first generation of QLED (2017) was an LCD (light source) covered with quantum dots (active color filter, respectively the image source itself) with new technologies that increased the brightness by 50-100% and significantly improved viewing angles.
QLED 2019/2020 or QD OLED – OLED as a light source, QD as an active color filter
Another wave of products (2018) developed the foundations laid by the first and a big change occurred with the second generation, reported in 2019 (± for 2020), when the LCD (as a backlight source) was replaced by an OLED. Samsung thought that when OLED is used as a source, it doesn’t have to deal with the size ratios of organic color dots or the amount of vaporized dye, or that with a standard OLED screen, most dye is wasted because it sticks to the mask when applied. The backlight thus became a large blue area composed of adjoining blue pixels formed by a thick layer of organic substrate. The matrix of quantum dots creates an image only where green and red are needed – blue only passes through.
Now Samsung has prepared the third major generation, which replaces OLED technology called mini LED. This is probably a consequence of the development in the field of micro LEDs, when the company managed to minimize LED technology to the level usable in living room TVs. The general advantages of LEDs include minimum consumption and maximum service life. Finally, the fact that they can be completely extinguished. Regardless of the high brightness that new generations can handle.
Mini LEDs reach 1/40 of the height of a standard LED. They do not consist of housings and lenses, but are grouped in microlayers formed by a high number of miniaturized LEDs. The combination of mini LEDs and quantum dots has made it possible to increase the range of the dynamic component to 4096 shades (12bit) and, compared to previous generations, reduces the minimum achievable brightness and increases the maximum achievable brightness. This allows you to further improve HDR support. Changes in the design of the screen have made it possible to further reduce the edges, which, according to Samsung, are almost non-existent in this generation.
The Neo Quantum Processor has also been upgraded, using sixteen neural network models trained for AI upscaling so that any source image in maximum quality can be converted to 4K or 8K resolution.
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