The refresh rate is the number of times a display’s image is repainted or refreshed per second. As it denotes a frequency of a process, the refresh rate is expressed in hertz. For instance, a refresh rate of 75 Hz means the image is refreshed 75 times in one second.
The Viewing angle is the maximum angle at which a display can be viewed with acceptable visual performance.
The Pixel Pitch is the distance between neighboring pixels. The Pixel Density is the quantity of pixels per square meter.
The LED display is a new kind of information and communication media, which is composed of the array of LED devices, used to display text, images, videos, TV programs, live broadcast, etc.