A thin screen full of holes that adheres to the back of a color CRT ... mask onto the phosphor dots. There are generally more holes per inch than the maximum resolution obtainable from that monitor.

The ‘CRT Effect’ myth says that the reason why ... possible color bleed and other artefacts with CRTs due to the shadow mask (or Sony’s Trinitron aperture grille), there was no extreme ...

Whether your screen is a domestic TV or a dedicated monitor, the heat and voltage stress of driving a CRT made these devices significantly less reliable than many of their modern-day counterparts.