OLED display: what is it?

Then the OLED display differs from the screens made by other technologies? Let’s find out.

If you go to a store that sells consumer electronics, then with high probability it is possible to see at least one TV with an OLED display. Because of the technology of screen this device will be very expensive. But why? What are the characteristics of such a display? The answer is in this article

Please note that the OLED technology is in its true form is mainly used for the production of large-size LCD panels. That is, to find such screens more often in TVs. In portable electronics typically used AMOLED displays, which, however, in General terms, very similar. But the OLED screen is typical for smart hours and fitness bracelets.

Display design

Like traditional LCD, OLED panel consists of many pixels that form the picture. However, the cheaper competitor is still the layer with the lights, where there is no such element. Instead, each pixel is essentially an organic led able to emit light independently. That is, the brightness of the OLED screen is regulated pixel by pixel. Have IPS or TFT panel in any case, the whole area illuminated by the backlight, causing the contrast obtained is far from ideal.

OLED displays consist of a number of thin organic films between two conductors. That voltage is applied to the conductors causes the screen to emit light. This design allows you to easily Flex the display — some manufacturers have already shown panel, able to curl into a tube. Must be, that this is the future of OLED-TVs. Just have to figure out how to achieve the flexibility of CPU, memory, motherboard and other components.

The colored sub-pixels of the OLED panels can have a different layout. Currently, the most popular are three schemes:

The first is the traditional when the picture is formed by three organic light-emitting diodes — red, green and blue.

The second option involves the use of blue emitters and a special luminescent material that converts shortwave radiation to longwave green, and red colors.

The third model is used less frequently, losing energy efficiency of such OLED screen involves the use of three white emitters, light from which then passes through color filters.

Whatever it was, and the structure of the matrix is unimportant — in any case, the screen offers excellent colour reproduction, high contrast and reduced thickness.

The main advantages of OLED

There are many reasons that OLED displays will become more popular.

The contrast of the OLED screens is very high

In particular, such matrices have the following advantages:

  • The picture has no distortion at any angle;
  • The lack of a separate layer with lighting positively affects the energy consumption;
  • These screens have a minimum thickness, therefore decrease the physical dimensions of the target device;
  • The contrast turns out almost perfect, because when showing black colors backlight is almost completely off;
  • The OLED technology allows you to display more colors.
  • Disadvantages of OLED

None of the technologies of LCD is not ideal. If we talk about OLED, come to mind the following limitations:

To buy a device with such a screen is much more difficult due to the very high value (in this case it is not about wearable electronics and televisions);

Early OLED displays have sinned short lifetime of blue LEDs, ranging from two to three years — now this problem is almost completely resolved (including software when the other colors are slowly starting to adjust to a weaker brother).

AMOLED vs OLED

If the comparison result with AMOLED-matrix, specific differences cannot be seen. The fact that it is actually two technologies under one name. Just OLED screen, as described above, can display images in different ways. It also implies a single technology, and such displays are highly compact, which allows their use only in portable electronics.

Also, it should be noted that AMOLED displays in sufficient quantities are produced only by the company Samsung. As for OLED, this technology creates a different screen tech giants. However, these words are true only in the case of OLED panels for wearable electronics. If to speak about large size displays for TVs, here holding the palm of the company LG Electronics.

Device with OLED screen

This technology is not new. The first screens are based on it was made many years ago. But for a long time, such panels have a limited set of colors, and most displays were monochrome. Color matrix began to be used relatively recently — mostly such panels are endowed with TV. Most often it is a very expensive model, the price tag of which varies from 150 thousand to 1.5 million rubles.

Another category of goods where it regularly occurs OLED screen is wearable gadgets. In particular, it is now for very little money you can buy a smartwatch and fitness bracelets. These devices such a display is necessary to reduce the thickness and reduce power consumption. IPS screen to use these gadgets, otherwise, the battery power will melt at the sight. The most popular fitness wristband with OLED display is the Xiaomi Mi Band 2. Of course, the screen is monochrome here. But this does not prevent the device to show all the necessary information.

Well, a smartphone with an OLED display does not actually exist. Almost all manufacturers, without exception, have relied on NVIDIA proprietary technology from Samsung. This is despite the fact that in the early 2000s there was a push-button phone with an OLED display. Apparently, many companies have been unable to establish production of such screens in a compact form factor in an industrial scale. And there was much point, because IPS displays were much cheaper, which positively affected the final price tag of the device.

Conclusion

To predict the further development of OLED technology is extremely difficult. Based on it the screens are able to display almost perfect picture. Now the case for small — to mass-produce from multiple companies, which would lead to competition and lower prices for end products. Then OLED displays start to appear in the televisions, which cost not forced to grab the heart.

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