What is the importance in the hertz in a flat panel TVs?

Answer 1

Broadcast Television runs at 50Hz (Europe) or 60Hz (North America). All standard definition signals in fact display a half frame, known as a field, 50 or 60 times each second. A full frame is displayed every 25th or 30th of a second. The same applies to HD signals using the 1080i format. 720p and 1080p deliver a full frame every 50th and 60th of a second. Some televisions boast 100Hz or 120Hz operation. The theory is that by creating additional frames between the original frames, less flicker is visible and movement appears smoother. The theory often works well in practice but there are televisions on sale that process the signal in a way that sometimes results in blurring of the image during fast motion on the screen. The blurring effect changes depending on the type of material being displayed. 100 / 120 Hz televisions tend to be more expensive than 50 / 60 Hz models but it is vital that the television is auditioned before making a decision to spend additional money on this feature. Remember that if you are a sports fan, it is no good to look at the display while it shows impressive but static landscapes. Look at the movement of a ball or hockey puck and see if it remains clear all the time. Likewise, lovers of films and documentaries may not see the improvement for their chosen content. If you cannot notice the difference between normal frequency and doubled frequency images, you must ask yourself if the additional cost is worthwhile.