Final answer:
Not all LCD and Plasma displays are interlaced; some use progressive scanning. Interlaced scanning was common in older TVs, while modern LCD and Plasma displays usually use progressive scanning for better image quality and refresh rates.
Step-by-step explanation:
Not all LCD and Plasma displays are interlaced; some are, while others use progressive scanning. Interlaced scanning was more common in older display technologies, like CRT (Cathode Ray Tube) televisions, where the picture is displayed by illuminating alternate horizontal lines with every frame. In contrast, modern LCD and Plasma displays typically use progressive scanning, where each frame renders all lines in sequence, producing a clearer and more stable image, particularly for fast-moving objects.
Furthermore, the trend in display technology has been toward higher resolutions and faster refresh rates, both of which are better served by progressive scanning. Displays that use progressive scanning have a 'p' (e.g., 720p, 1080p) in their resolution description, while interlaced displays have an 'i' (e.g., 1080i).