What does resolution mean in LED display

Resolution refers to the total number of pixels on the screen. The higher the resolution, the clearer the display and the more comfortable it is to watch. Resolution is calculated by multiplying the number of horizontal pixels by the number of vertical pixels. For example, the common 1920x1080 is calculated as 1920 horizontal pixels * 1080 vertical pixels = 2073600 pixels

Several common resolutions:
HD：1280x720 = 921,600
Full HD：1920x1080 = 2,073,600
4K：3840x2160 = 8,294,400