What is LCD LED 1
In principle, LED televisions also have LCDs, i.e. liquid crystal screens. The difference is in how these crystals are illuminated. A conventional LCD has a flat backlight made of fluorescent tubes, while an LED television uses an array of many individual light-emitting diodes that shine through the LC display. The result: a flatter design, lower power consumption and a longer service life. Conventional LCDs can therefore only be found in the cheapest televisions these days, and almost every model from 400 euros onwards uses LEDs.
However, there are also differences: The product descriptions contain terms such as "Edge-LED" or "Direct LED" or "Full LED". In the former, cheaper televisions, the LEDs are arranged on the edge of the screen and are deflected over reflective surfaces behind the display. Direct LEDs, on the other hand, have a real arrangement of light emitting diodes behind the screen. If necessary, individual image areas can also be darkened here. However, it is worth asking the seller how many such individually darkening zones the TV's backlight has - the more, the better. With this trick, corresponding devices compete with good plasma screens in terms of contrast range and black level.
What are the advantages of OLED devices?
In contrast to LED screens, OLEDs are no longer LCDs. Instead, organic (this is what the "O" stands for) diodes are used, which can light up in different colors - and therefore no longer need a display in front of it, but rather display the pixels themselves. They are high-contrast, economical in power consumption, quick to react - in short: they will probably combine the advantages of both competing display technologies. However, their production is still very expensive, and manufacturers are struggling with teething problems and the short lifespan of the diodes. It will therefore be a few years before there are affordable OLED TVs the size of living room for home users.
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