TFT LCD and OLED
An OLED display does not require an additional light source. The technology is based on carbon-based material and when power is applied, it becomes luminescent. The advantage is that the display is lighter and thinner than conventional TFT screens, the contrast is higher because only the leading pixels are lit and the viewing angles are very good. OLED is mostly used in consumer electronics. The disadvantages are short life and limited flexibility.
TFT LCD is a well-used and long-established technology. There is currently no new technology that completely replaces TFT LCD. It is a relatively inexpensive technology with a large variety of solutions depending on the needs of the application. Unlike OLED, the background lighting is based on a separate light source, the so-called LED backlight. The color reproduction and contrast are very good and it is possible to get displays in all sizes. Today’s TFT displays have, thanks to IPS (In-plane switching) technology, better colour reproduction and very good viewing angles.
Touch sensors (touch), here there are also choices to be made, but it is the touchscreen technology (Projective Capacitive Touch) that most people choose, although the choice depends on how the user is supposed to interact with the display and what environment it is to be used.