Do all LCD screens use TFT screen technology?

No, there are several different LCD technologies in use.

TFT (thin film transistor) is one of the commoner types, for larger / higher resolution types.

IPS (in-plane switching) & variation on that technology are very common - that presently has the widest viewing angle range.

TN (twisted nematic) is still also very common in smaller LCDs and cheaper monitors/screens. They are cheaper to manufacture but have limited viewing angle range.

LED screens are just one of the LCD types with LED rather than fluorescent backlighting.


OLED & it's variations (AMOLED etc) which are now becoming commoner are totally different and unrelated to LCD types.

With those, each pixel is made up from individually controlled LEDs
It has a lot of possibilities but is still relatively new and still has some problems, such as areas of a display that are often very bright age and fade more, leaving ghost images similar to CRT "burn-in" in appearance....Show more