The TV Refresh Rate describes the frequency at which a video screen updates per second; a high refresh rate gives you a smooth, natural-looking motion. The refresh rate originates with early film, when movie projectors ran at 24 frames per second, with shutters allowing projection of 48 frames a second (each image showed twice), or 48 hertz (Hz). Traditional, tube televisions delivered a 60 Hz or 50 Hz refresh rate.
During the early digital stages, all LCDs had issues with blurring during fast motion or when panning content, popularly known as motion blur. To resolve the issue, manufacturers created television sets that refreshed at a rate faster than 60 Hz. Today, the innovative solution uses the frame insertion technique to create additional images, which it inserts between the original images for a better viewing experience. Today, you can enjoy HD TVs with a TV refresh rate of up to 240 Hz: typically a higher refresh rate results in less motion blur.