This was due to the working principle of the liquid crystal display. Liquid crystal displays used 'back-illuminated' technology to display images by reflecting light. This allows the liquid crystal display to display high-quality images with higher contrast and better color performance. When a close-up scene appeared on the LCD display, most of the light would be reflected and absorbed, so the display would be clearer. When the network television signal source is located within the close-range of the liquid crystal display, the image of the signal source can be more clearly displayed on the liquid crystal display. When the character moved quickly, the image on the LCD screen would also move quickly. However, due to the limitation of the " back-illuminated " technology, the LCD screen could not capture the image of all the characters at the same time, so the image of the character would be blurred. When the network TV signal source is within the long-range range of the LCD display, the image of the signal source cannot be reflected or absorbed, so the image on the LCD screen will become blurred. This was because the LCD monitor could not display distant images as clearly as a television.