WHAT IS PIXEL and Pixel Pitch ?

Pixels: The Building Blocks of Digital Images Pixels, which stands for picture elements, are tiny dots of light that make up letters, words, graphics, animations and video images on a digital display. A pixel can consist of one LED, several LEDs of the same color or several LEDs of different colors. They are the smallest units of the digital display system that can be individually controlled and turned on or off at different brightness levels.

Pixel Pitch: Pixel distance, for example, P2.5mm LED Screen means this led screen 2 close pixels distance is 2.5mm.