PREPARATION OF ELECTRON EMISSION FILAMENT ASSEMBLY AND FILAMENT ASSEMBLY

摘要

PURPOSE: To provide an electron emitting filament assembly which can highly reliably work at high operation temperature and can be manufactured at high production yield through a lessened number of manufacturing steps and provide a method for manufacturing the assembly at low cost. CONSTITUTION: Parts of a first and a second conductive posts 26, 28 are air tightly fixed in a mold cavity forming a base 70. A molten compound is supplied to the cavity and cured to capsulate and enclose the posts to form a base in the surrounding of the posts. When the electric current applied from the first post 26 reaches the second post 28 through the filament 72, a filament made of a material which can emit electrons in controlled supply amount is selected and the filament is electrically connected between the first post and the second post.