Response time refers to the time it takes from the reception of the signal on the liquid crystal display to the complete presentation of the picture. If the time is too long, there will be a delay in the playback of dynamic images. The general calculation unit is milliseconds. The smaller the value, the better, the faster the response time, and the moving picture will not have the feeling of trailing drag. The response time of currently available LCD monitors can now reach 8 to 4 milliseconds.