With the continuous development of television technology, LCD TVs have become the first choice for people to purchase TVs because of their good picture display, large size and low price. According to the statistics of 2016, the 55-inch LCD TVs saw the largest increase last year, and televisions with 55-inch and above also maintained a rapid increase. It seems that people like to be bigger. However, when selecting an LCD TV, it is not always necessary to increase the size of the LCD TV. The size of the LCD TV needs to be determined according to the use of the home. In the past, the screen size was determined by the viewing distance. But now, we can't just judge by watching the distance, because the resolution of the screen is constantly improving. We know that high resolution means that you can watch at a closer distance and it won't produce a grainy picture, keeping the screen unchanged. In the case of higher resolution, it means that the best viewing distance is shorter. So now buying a TV, you need to take into account the screen resolution, there are people in the industry to give the latest best viewing distance calculation formula, the best viewing distance (cm) = screen height ÷ vertical resolution × 3400. The following is the relationship between the LCD TV size and the best viewing distance for everyone to refer to when purchasing the TV: Smart TV/box information can focus on smart TV information network sofa butler (http://), China's influential TV box and smart TV website, providing information, communication, TV boxes, smart TVs, smart TV software, etc. Answering questions.