Many have not yet fully adapted to the idea that the times of monitors and televisions, based on the electron-beam principle of image construction, remained the property of the past. It is possible that in a dozen years they will be remembered only in the lessons of history. All of us now live in an era when most screens in video devices are based on liquid crystal technology. TVs, computer monitors, screens of mobile phones and digital cameras - this is not a complete list of devices that use TFT. Perhaps now, even the elderly people are not surprised by the incredibly flat screen, which is called liquid crystal or LCD - from the English. Liquid crystal display. However, more recently you can hear the expression "Oled monitor" more often. Despite the novelty of the term, many have already got used to it. So, Oled monitors are actively advertised on television; In the salons of mobile communication, new models of telephones with a display made using this technology are offered; On the forums and Internet pages are compared already outdated (hard to believe) LCD screens and their successors Oled. Thus, in order to learn that there is an Oled monitor, it is not necessary to read reviews and follow the novelties of the market.
The Future Today
Although the Oled display is often presented as something new on the screen market, it's pretty much like TFT. At least the principles of matrix management are very similar. What is an Oled monitor? The very abbreviation is formed from the first letters of the English words Organic Light Emitting Diode - an organic light-emitting diode. If you compare Oled monitor with LCD (liquid crystal), then its matrix is formed of special compounds of an organic nature, which are able to glow under the influence of an electric current. But in the latter, on the contrary, the cells are made of inorganic material and can not radiate light themselves. The voltage input can only change the spatial orientation of each crystal in the cell by increasing or decreasing the light flux from the backlight system (cold cathode lamps or LEDs) located on the back of the matrix.
We did not in vain recall the similarity of the two solutions. The fact is that they use a similar control scheme: the same transistors, the same logic. Without a doubt, Oled technology would not have arisen without LCD displays.
Features
One of the advantages of the new technology is the lack of backlighting. In traditional TFT monitors, there is a problem of the uniformity of the glow of the screen caused by the peculiarity of the placement of the backlight (or diode rulers). It is economically unprofitable to make a light-emitting whole surface behind a matrix, and any other arrangement is a trade-off between uniformity and price / economy. Oled is in principle devoid of this feature: the glow is even, the black color is deep and saturated, as it should be.
The next advantage is the excellent viewing angles: the famous distortions with side view are completely absent.
The thickness of the monitor became less than that of models with LED backlighting, and the control scheme was simplified (finally one can forget about PWM).
Perhaps the only drawback is associated with a shorter service life - the diodes just burn out. However, the moral obsolescence and the change of generations of monitors are much faster, so you should not worry about it.