TFT Benefits and Uses
Since the transistors in a TFT LCD screen are so small, the technology offers the added benefit of requiring less power. However, while TFT LCDs can deliver sharp images, they also tend to offer relatively poor viewing angles. The result is that TFT LCDs look best when viewed head-on, but viewing images from the side is often difficult. TFT LCDs are found on low-end smartphones as well as basic cell phones. The technology is also used on TVs, handheld video game systems, computer monitors, and GPS navigation systems.
How Do TFT Displays Work?
All the pixels on a TFT screen are configured in a row-and-column format, and each pixel is attached to an amorphous silicon transistor that rests directly on the glass panel. This allows each pixel to be given a charge and for the charge to be kept even when the screen is refreshed to produce a new image. With this type of setup, the state of a particular pixel is being actively maintained even while other pixels are being used. This is why TFT LCDs are considered active matrix displays (as opposed to a passive matrix displays).
Newer Screen Technologies
Lots of smartphone manufacturers use IPS-LCD (Super LCD), which provides wider viewing angles and richer colors, but newer phones feature displays that utilize OLED or Super-AMOLED technology. For example, Samsung’s flagship smartphones boast OLED panels, while most of Apple’s iPhones and iPads come equipped with an IPS-LCD. Super LCD and Super-AMOLED have their own pros and cons, but they both far exceed the capabilities of TFT LCD technology.
