Once you know what you want to use the monitor for, you can choose from a variety of screen types.
The most widely used monitors today are LED monitors. Apart from their low price, they score points above all because of the technology, which is developed further every year. The LED technology used enables a particularly flat design of such monitors. In terms of colour, LED monitors offer rich and strong colours and high contrasts. The power consumption of such PC monitors is usually low.
It should be noted that LED screens are by no means successors to LCD monitors, as some dealers would have us believe. Both types of monitor use liquid crystals that are irradiated with light-emitting diodes. This is where the name LCD (Liquid Crystal Display) comes from. So LED screens are actually LCD screens. In the case of PC screens with LEDs, the liquid crystals are also illuminated by LEDs.
The response time of LED monitors depends not only on the screen itself but also on the other hardware used. LED PC monitors are particularly suitable for continuous operation due to their low power consumption. The extremely flat design also makes them a good choice when space is at a premium.
These PC monitors were primarily the replacement of the old CRT monitors. Unlike LED screens, LCD/TFT screens still use conventional fluorescent tubes to illuminate the liquid crystals. As a rule, all LCD monitors offered today use TFT technology, which stands for "Thin Film Transistor" and is the basis for active-matrix screens.
Such PC monitors score particularly well with their flicker-free display and particularly high colour spectrum. The resolution is usually 1920×1080 to 1920×1200, i.e. Full HD. In terms of response time, these flat PC screens are roughly in line with LED monitors.
A small disadvantage compared to screens with LED technology is the slightly lower contrast and the limited viewing angle. The colours are also somewhat paler.
So-called field emission screens are also flat screens, in which electron beams are used to create actively luminous dots on a screen with a fluorescent layer. However, the complete screen is not described here. FED screens do not require background lighting, but function as self-luminous screens.
The CRT screen or cathode ray tube screen has largely been displaced from the market by flat screens. It is based on the cathode ray tube by Ferdinand Braun and is still produced in different sizes. The decisive factor when using such a cathode ray tube screen is not the resolution of the display, but the viewing distance.
Plasma displays are colour flat-screen monitors in which different coloured light is generated with the aid of phosphors. The phosphors are excited by plasma generated by gas discharges. Plasma screens are mainly used in the form of television sets, as they are usually built as rather large screens (from 42-inch screen diagonal). Plasma screens manufactured in sandwich construction are gradually being pushed out of the market by LCD monitors. Well-known manufacturers such as Samsung stopped producing such screens several years ago.
OLED screens with organic light-emitting diodes are also used as PC screens. Especially the fact that the material properties also allow the production of flexible screens speaks for OLED screens. These PC screens do not require any backlighting and offer very high contrast compared to conventional LCD screens, making them the first choice for graphic designers, especially as colour-accurate screens. OLED screens require less energy than LCD monitors and also become less warm. They can be manufactured exceptionally thin.
The biggest disadvantage of OLED screens is the relatively short life span of some components made of organic materials. An OLED screen only lasts about half as long as an LCD screen. The lifetime can be influenced slightly by sufficient cooling. They are also particularly susceptible to environmental influences such as incorrect air humidity, penetrating oxygen and the like. The display must, therefore, be hermetically sealed. Colours in such PC screens normally age irregularly, which can result in colour shifts over time.
The SED technology is related to the technology of field emission screens and was originally developed by Canon and Toshiba. SED monitors have a particularly high efficiency, which is reflected in much lower power consumption than LCD screens. In addition, the achievable contrast of SEDs is exceptionally high, as no backlighting is used in this technology. A very fast response time - similar to classic CRT monitors - and high colour fidelity round off the spectrum of advantages. However, SED screens only support a single resolution and repeatedly show pixel errors. Even with SED screens, there is a risk of burning in static screen contents.