The unit of time for measuring the reaction rate is milliseconds (ms). It refers to the time required for a pixel to turn from light to dark and from dark to bright. The smaller the number, the better. The smaller the value, the faster the reaction rate. The reaction rate of mainstream LCD is more than 25ms. It doesn't matter much in general commercial use (e.g. word processing or text processing). Because this kind of use need not care too much about the reaction time of LCD. If it is used to play games, watch full-screen high-speed dynamic video such as VCD/DVD, etc. Reaction time is particularly important. If the reaction time is longer, dragging and shadow will appear in the picture. For example, Most LCD displays in the market will have different degrees of tailing when playing QUAKE3, especially when the picture is updated at high speed. CRT has no problem at all, because the reaction time of CRT is only 1 ms, there will never be tailing phenomenon.
