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US 5,703,429 AGranted
Directly heated cathode structure
AssigneeSamsung Display Devices Co., Ltd.
InventorsChang-seob Kim, Seok-bong Son, Sang-kyun Kim, Bong-uk Jeong
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Abstract
A directly heated cathode structure includes a porous pellet impregnated with an electron radiating material, a cup-shaped container holding the porous pellet, a metal member welded to the container, and a filament between the container and the metal member, restricting thermionic emission through the base and sides of the pellet and extending the life of the cathode structure.
Claims16
A directly heated cathode structure comprising:
- a porous pellet impregnated with an electron radiating material;
- a cup-shaped container holding said porous pellet;
- a metal member welded to said container;
- and
- a filament disposed between said container and said metal member.
2 more elements
Dependencies are inferred from the claim text.