In the market, there are a lot of confusions between LCD, TFT, IPS and OLED. Of course, all of them are displays.
LCD stands for Liquid Crystal Displays (In market, LCD defaults to “Passive Matrix LCD”),
TFT stands for Thin Film Transistor (In market, TFT defaults to “Active-Matrix TN type TFT LCD),
IPS stands for In-Plane Switching (In market, IPS defaults to “High End Full Color LCD),
LED stands for Light Emitting Diode (In market, LED TV actually is a TFT TV but with LED backlights. It is not LED displays!)
OLED stands for Organic Light Emitting Diode. It is a display but not an LCD shown above.