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POLED, AMOLED and OLED: What is the difference between these display technologies?

Canvas is always a delicate subject, as each has its own personal taste. Some prefer a more realistic color IPS, others like the more saturated AMOLED that makes the photos look beautiful. But as we get deeper into this second technology, we may get confused when terms such as OLED, POLED, P-AMOLED and others begin to emerge. Let's explain now what are the differences between them, check it out!

In some of these terms, the fight most focused on two manufacturers, LG and Samsung. And it is not difficult to imagine this, because when we think of TV, the best brands that come to our mind, at least in Brazil, are LG and Samsung. And in this business, LG's OLED technology clashes with Samsung's QLED, but on smartphones the paths are a bit different.

What is OLED?

Acronym OLED stands for Organic Light-Emitting Diode (Light Emitting Organic Diodes, in Portuguese), and only the evolution of LCD screens. Unlike LED, OLED does not use liquid crystal, but an organic diode. The active layer (where the images are formed) of this type of canvas has organic material (polymers) and can be placed on both hard and flexible surfaces.

smartphone screens
A summary of screen differences / AndroidPIT

The diodes are distributed between polarizing transparent plates (glass or other material). But unlike the LCD where the crystals are opaque or transparent to block or allow light in the pixels, in OLED the diodes emit their own light when they receive power. This not only saves energy, as on the LCD the backlight always has to be lit, as it brings the deepest blacks, since each diode only illuminates when necessary.

What about AMOLED?

Take the same explanation about OLED, and let's put an addon. There are two ways to send power to the pixels: either you send power to everyone at the same time or one at a time. On high-resolution screens such as smartphones, the first option (known as the passive matrix) uses a lot of energy and wears out very quickly. Thus, the best solution is in active arrays, which are a thin layer of transistors that energize each pixel at a correct voltage.

In English, these are Active Matrix, bringing AM to OLED. So if you stop to think, all smartphone OLED screens are AMOLED. But then why are only Samsung displays so named? Pure choice of names.

And where does P-OLED come in?

At least that's the easiest part to explain. As I said, it takes several layers to form any canvas. In the case of a smartphone AMOLED we have, from the bottom up, the glass transistor layer (better known as TFT, who would say!), The diode layers, the encapsulated glass and the polarizer. This is summarized as there are other layers.

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LG G Flex was a beautiful and underused project, one of the first uses of P-OLED / LG

What is important to know is that with glass there is not much freedom of shape, thickness and strength. So, to be able to present curved screens to the world, they exchanged the glass for plastic, the latter being what gives the OLED the P. And yes, POLED, or P-OLED, the term used by LG. For the case of Samsung, the term P-AMOLED (although they are the same thing).

LG was among the first to use the also-known Plastic-OLED on its LG G Flex, a curved smartphone that best fit its face. I particularly liked him very much, even a second version came out, but because it was the first experiment with technology, the overall quality of the screen was quite questioned.

Today we have POLED on the LG V line, and also on the Galaxy S and Note line, as well as many other handsets.

But is it or not?

In the general feature of the technology, P-OLED and P-AMOLED have no differences. And from OLED to POLED only the glass changes to plastic. However, just each company call your screen the way you want, and the fact that they are manufactured by different teams does make a difference.

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Galaxy S9 and its saturated colors on the screen P-AMOLED / AndroidPIT by Irina Efremova

This is because they change things that seem small at first glance, but in the end please the Greeks or Trojans more. The material used, the mode of manufacture, a few different layers, and especially the final calibration, make you like one or the other, one of which can be slightly pulled to blue (like Samsung), others to yellow. (case of screens used in Motorola) and so on.

And you? Do you prefer Samsung OLED or LG OLED?

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