To increase the degree of vacuum of a field-emission type device.
A vacuum container comprises a cathode-side substrate 2 having field-emission elements formed thereon an anode-side substrate 1 disposed at a fixed distance therefrom in the direction of electron emission, and a getter chamber 3 having a hole communicating with an exhaust pipe. An evaporation- type getter 4 and a getter substrate 10 confronting the evaporation-type getter 4 are housed in a suspended state in the getter chamber 3, and a getter mirror surface 10 m is formed on a surface of the getter substrate 10 by heating the evaporation-type getter 4. Accordingly, even if high-temperature baking is conducted, temperature rise of the getter mirror surface is decreased and an adsorbing function of residual gas by the getter mirror is not deteriorated.
TANAKA GENTARO
UCHIDA YUJI
KOGURE YUICHI
