A TFT monitor is a very thin film transistor. It is one of the key components of LCD monitors (which, because of the width, are often called flat panel displays).
A TFT monitor uses several, minute transistors that each correspond to a pixel. The size of the transistors takes very little time or energy to “re-draw” an image. This enables a quick response time since an image can be refreshed many times over one second.
This is what makes a TFT computer monitor so ideal for gamers and multi-media artists. Old computer monitors would experience a lag time; for example, when moving a mouse, the pointer would disappear between point A and point B. This does not happen with a TFT computer monitor.
TFT computer monitor is also known for having very rich and crisp images, making it ideal for video editing, photography, and desktop publishing.
One 17 inch TFT monitor can contain approximately 1.3 million pixels. Given the law of averages, it is highly possible that a few of those pixels are malfunctioning. You will notice this when you switch the monitor to a solid black screen. The dead pixels reflect as red, white or blue. It is possible to return the TFT monitor for replacement, but most companies will require at least 12 dead pixels to avail of the warranty. Fortunately most dead pixels will not visibly affect image quality unless they happen to occupy a crucial position on the screen.
When shopping for TFT monitors, look for consumer surveys for a list of brands that tend to have less dead pixels.