It really is similar to CRT as much as the electrical gun and even phosphor-coated mechanisms are worried.

In place of the electron beam perfectly producing the snapshots on the phosphor coated CRT panel, the writing is performed with the help of a fine-mesh wire grid.

The grid made of very thin, high quality wire is located with a dielectric and is mounted just before the screen on the path of the electron beam from the gun.

A pattern of positive charges is deposited on the grid and this pattern is transferred to the phosphor coated CRT by a continuous flood of electrons.