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Question:
The exam objectives list three types of Liquid Crystal Display (LCD) technologies: Twisted Nematic (TN), In-Plane Switching (IPS), and Vertical Alignment (VA). Of three, TN uses the least amount of power, but it provides the highest refresh-rate. The problem with TN LCD screens is that the picture quality decreases greatly when viewed from wider angles. IPS LCDs have better color representation and wider viewing angles, but they are more expensive and have slower response times. Although VA LCDs have slower response times than IPS and TN, they have the best contrast and image depth. LED (Light-Emitting Diode) refers to a type of LCD monitor backlighting.