Shadow mask
Updated: 04/26/2017 by Computer Hope
On CRT (cathode ray tube) monitors, a shadow mask is a metal plate on the back of the CRT. It is used to mask the beams from the electron guns similar to an aperture grille on a Trinitron monitor.
On CRT (cathode ray tube) monitors, a shadow mask is a metal plate on the back of the CRT. It is used to mask the beams from the electron guns similar to an aperture grille on a Trinitron monitor.