DEVICE HAVING AN ELECTRIC DISCHARGE TUBE COMPRISING A FIELD EMISSION CATHODE, AND DISCHARGE TUBE DESTINED FOR SUCH A DEVICE

摘要

In a cold cathode consisting of a layer of aluminum oxide between a plate and a grid, the aluminum oxide is formed on aluminum as a porous oxide layer. The meshes of the grid are so fine that the grid is attracted against the oxide due to the voltage difference with the plate.