What is OLED?

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Pau Monfort
@paumonfort

A screen is distinguished not only by its size and shape, but also by the technology of its panel. One such technology is OLED. But do you know what it is or what it consists of? We tell you.


OLED stands for (Organic Light-Emitting Diode) organic light-emitting diode, in Spanish. As the name suggests, this technology is based on organic diodes that emit light by applying electric current without the need for an additional light source, this is its main feature.



This technology began its development around 1970, but only in the last decade have we seen many manufacturers apply this technology or some of its variations to their screens.

Specifically, it is a very thin film of organic components which, in contact with an electrical stimulation, light up in one or another color. Each of these diodes is a pixel and as they light up together they shape the images of the image.


What is OLED?

An OLED panel is usually composed of four main layers:

  • the substrate, which acts as a structural structure
  • the anode, which attracts electrons
  • the cathode, which supplies electrons
  • and the organic layer between these layers

This organic layer is then divided into:

  • a conductive layer, which provides the "electron holes" that electrons passing through the layer can engage, thus releasing energy
  • and an emissive layer in which light is actually produced.

So if you want to start playing with real color production, just add layers of red, green and blue plastic to the substrate.




One of the most relevant features of OLED technology is that it has a flexible structure, which allows you to create folding screens on all kinds of surfaces in the future.

Furthermore, thanks to the fact that they are able to generate their own light, it is possible to obtain totally black pixels, simply by turning them off, thus obtaining more contrasting images with greater color depth.

To make things better, OLED TVs offer a better viewing angle without losing quality from any position, and response time is reduced to 0,002 milliseconds, eliminating almost completely blurry images and the dreaded ghost effect in action or sports scenes. , so common in many LCD LED TVs.


It also offers lower power consumption and allows you to create much thinner and lighter, but also more fragile TVs.

But there are not only advantages. Today the OLED technology it is still very expensive to implement, especially when compared to traditional LED LCDs, which makes the final price of LED TVs much higher than these.

Furthermore, the dimensions of today's OLED TVs start at 55 inches, which can be inconvenient not only for the pocket, but also for those with limited space at home.

Currently, the main manufacturer of OLED panels is the Korean company LG which also supplies this type of screens to other manufacturers to use them as a starting point for their new TVs.


Furthermore, OLED technology not only applies to televisions, but it is also possible to find variants of it in smartphones such as AMOLED, Super AMOLED, AMOLED Plus or P.

Advantages of OLED

By calling OLED TV the future of television we should have strong arguments to support this bold statement. Where does it come from and what becomes more and more interesting? So what's amazing about OLED TV that doesn't stop to excite?


Low energy consumption

OLED is the most energy efficient technology ever produced for our displays. It takes little energy to activate the organic light-emitting molecules located in the substrate's emitting layer. An OLED screen doesn't require any electronics or circuitry, which makes it very efficient. On top of that, an OLED simply disables the pixel to produce black, saving energy.


Better image quality

OLED TVs incorporate their own color filters and thus produce deeper blacks and a wider color palette. Since each pixel can be disabled individually, OLED TVs offer absolute contrast ratio and absolute black. The image is very realistic and gives a dazzling impression when it comes to black levels.

Response time and delay

The response time represents the time required for each diode to go from “on” to “off”. The faster the response time, the less blurry the image. Today, OLED technology offers the fastest response time of any TV technology currently in use.

Perfect viewing angle

Since OLED pixels emit light and color, viewing angles also tend to be extremely wide. OLED displays can be viewed without luminance degradation at important viewing angles - up to 84 degrees.


Light weight and innovative design

OLED screens are extremely thin and do not require backlighting. As a result, OLED TVs are much lighter than TVs with different technologies and are noticeably thinner. It also allows you to create very refined OLED TVs, with a clean design that fits perfectly into a modern or refined interior design.

Further Reading:

  • Plasma vs. OLED, we find the differences
  • OLED TV: what you need to know
  • What is an OLED TV?
  • What exactly is Samsung's MicroLED technology (and how it affects your new TV)
  • QLED vs OLED what's the difference and why does it matter ...
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