In modern household appliances such elements as TFT-screens are massively used. They can be found in a variety of types of devices: computer displays, cell phone screens, tablets, ATMs, and many other devices. What is this technology, what are its advantages? In this article, we will analyze what TFT screens are, their types and advantages.
Thin-film transistor (TFT), which in English means thin-film transistor. These elements are made from a thin film with a thickness of 0.1-0.01 microns. For most people, LCD monitors are associated with flat screens in TVs, laptops, camcorders, etc. Modern TFT screens are characterized by a solid construction, high brightness, and the ability to work in a wide temperature range. The use of the described technology made it possible to reduce the weight, overall dimensions and power consumption of the equipment.
The first liquid crystal matrices appeared in 1972. Since then, these technologies have evolved and changed significantly. Today there are many types of TFT monitors:
- TN TFT - This type of TFT color screen (the first technology to enter the liquid crystal display market) is inexpensive. Disadvantages include color distortion, low image contrast, very bright and noticeable dead pixels.
- Super Fine TFT, this TFT screen features a maximum viewing angle of 170 degrees, as well as high color reproduction, a response time of 25ms, dead pixels are black, and therefore not so noticeable.
- Super IPS, Advanced SFT - have a bright, high-contrast image, almost no color distortion, increased viewing angle, high image clarity.
- UA-IPS, UA-SFT - has a low level of distortion of the transmitted image at different angles. These displays feature enhanced panel transparency and a wider color gamut at high brightness levels.
- MVA, the main advantage of this technology is the minimum reaction time, as well as a high level of contrast. The disadvantages include high cost.
- PVA - vertical microstructural placement of LCDs.
Continuous development of TFT-technologies has allowed to significantly reduce the cost of production of such displays. An important factor in the widespread use of active matrices in industry has become ease of manufacture. Today, touch screen (TFT) is commonplace, and twenty years ago, it was "expensive exotic". The appearance of touch displays was preceded by the appearance of models capable of working in harsh environments.operating conditions. The result was the development of a TFT-monitor, which combined a means of displaying visual information, as well as a means of entering data (keyboard). The operability of such a system is provided by the serial interface controller. PIC controllers are used to control and decode signals from the sensor, as well as to suppress "bounce", they are able to provide high speed, as well as accuracy in determining touch points.
In conclusion, let's say that TFT-technologies have almost completely replaced tube monitors. Today, TFT displays are no longer a luxury, but a natural phenomenon.
