Response time refers to the reaction speed of LCD to the input signal, that is, the reaction time of LCD from dark to bright or from bright to dark, usually in milliseconds (ms). Of course, the smaller the value, the better. If the response time is too long, it is possible to make the LCD display have the feeling of tail shadow dragging when displaying dynamic images. The response time of general LCD is between 2ms and 5ms. To clarify this point, we have to start with the perception of dynamic images by human eyes. There is a phenomenon of "visual residue" in the human eye. High-speed moving pictures will form a short impression in the human brain. Up to now, the latest games such as cartoons and movies are based on the principle of visual residue, which enables a series of gradual images to be displayed continuously and quickly in front of human eyes, thus forming dynamic images. The acceptable display speed of a picture is usually 24 frames per second, which is also the origin of the 24 frames per second playback speed of a movie. If the display speed is lower than this standard, people will obviously feel the pause and discomfort of the picture. According to this index, the display time of each picture should be less than 40 ms. In this way, for LCD, the response time of 40ms becomes a barrier. When the response time exceeds 40ms, the display will appear obvious picture flickering phenomenon, which makes people feel dazzled. If you want to keep the image from flickering, you'd better reach the speed of 60 frames per second.
