THIN-PANEL PICTURE DISPLAY DEVICE

摘要

A picture display device having a vaccum envelope which is provided with a transparent face plate and a display screen having a pattern of luminescent pixels, and with a rear wall, comprising electron-producing means, and addressing system arranged between sais means and the face plate so as to address desired pixels, and, adjacent to the display screen, a plate of electrically insulating material provided with apertures for passing electrons, in operation of voltage difference being applied across said plate, characterized in that the surface at the electron entrance side of the apertured plate is coated with a coating of a material selected from the group comprising substoichiometric nitrides, borides and carbides of A1 and/or Si, and amorphous Si.