Updated: 04/26/2017 by Computer Hope

A collection of blue, green, and red dots or lines that become charged by the CRT (Cathode Ray Tube) within a CRT. When charged, the phosphor lights up for an instant, causing a visible color to show on the screen of your monitor. The picture below is a macro shot of phosphor dots on a CRT monitor.

Display Pixel on LCD

CRT, Video terms