TFT LCD displays are variations of the Liquid Crystal Displays that use Thin Film Transistor technology for better image output. The displays are based on a sandwich structure where two glass plates are separated by liquid crystal. The liquid crystals are not as liquid as the name implies, however, although they are also not quite solid. Soapy water is one example.

The crystals change the properties of the light that passes through them when electrical charge is applied. Fredreich Rheinizer, an Austrian botanist, discovered them in 1888. 

TFT LCD displays have the ability to show complex graphics, fast animations, vibrant colors and clear text. The pixels on the displays use tiny transistors that can be controlled with very little charge. This means they consume relatively little energy. 

TFT LCD displays also minimize flicker, which helps them to allow fast re-drawing, something that creates challenges with flat panel monitors. The high refresh rates make it possible to display fast images without sacrificing quality. They refresh at a rate of 16 milliseconds or less. This feature makes these displays ideal for gaming, video and other types of multimedia content. 

The TFT LCD displays use millions of pixels to show small pieces of picture elements. Each pixel is like a very small dot on the screen. Cells of liquid crystals change direction of the light that passes through them depending on the applied electrical voltage. 

When two polarizing materials are aligned, they allow light to pass through but block light when they are at right angles. TFT LCD displays project pictures on the screen using the tiny transistors, which change the direction of polarizing materials.

TFT LCD displays can be used in video game systems, computer monitors, television sets, cell phones, projectors, navigation systems as well as personal digital assistants.