TFT (Thin Film Transistor) display, also known as Active Matrix, have tiny transistors embedded into each pixel of the display, enabling them to be individually controlled by the display’s drive system.
Organic Light Emitting Diode - a self-emissive display technology with pixels that emit light when a current is applied to them. With no back-light they produce high contrast ratios and wide viewing angles.
Low resolution displays that use individually styled shapes as pixel elements. These elements can be styled and arranged to form seven or fourteen segment starburst alpha-numerical digits or intuitive icons.