Thin type picture vacuum envelope display device - has front wall supporting luminescent screen at inner side rear wall short distance accommodating adjacent electron sources

摘要

The device has a vacuum envelope for displaying pictures composed of pixels on a luminescent screen. The screen has a number of juxtaposed sources for producing electrons. Local electron ducts, cooperate with the sources, and have walls of electrically insulating material. The ducts have a secondary emission coefft. for transporting through a vacuum, the produced electrons in the form of electron currents. There is a device for withdrawing each electron current at locations from its duct and directing it towards the luminescent screen for producing picture composed of pixels. The electron ducts are provided with electrodes for producing an axial electric field Ey and a transversal field Ex.