Directly heated cathode structure

Details Directly heated cathode structure Directly heated cathode structure

1995-04-26

1998-11-03

Powell, Mark R.

Electric lamp and discharge devices

Electrode and shield structures

Cathodes containing and/or coated with electron emissive...

H01S 115

Patent

active

058313796

ABSTRACT:
A directly heated cathode structure includes at least one porous pellet containing electron emission material and filaments secured to at least three side surfaces of the porous pellet to support the pellet stably and prevent vibration caused by shock and potential deformation. Each filament is supported by an insulating block and more than one pellet may be mounted on a single insulating block. As a result, a highly reliable cathode ray tube can be manufactured.

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