Image apparatus having recessed envelope for placement of electr

Details Image apparatus having recessed envelope for placement of electr Image apparatus having recessed envelope for placement of electr

1998-03-20

2000-09-05

Patel, Vip

Electric lamp and discharge devices

With luminescent solid or liquid material

Vacuum-type tube

422477HL, H01J 6304

Patent

active

061148040

ABSTRACT:
An image-forming apparatus comprises in a vacuum envelope an electron source including a plurality of electron-emitting devices and an image-forming member including a fluorescent layer and a high voltage anode layer disposed vis-a-vis the electron source. The envelope may preferably have a low resistance electroconductive member electrically connected to the ground by way of a low impedance ground connection line for by-passing large electric current which may occur upon electric discharge between the anode layer and the electron source and can possibly destroy the electron-emitting devices if flowing thereinto by way of the driving wires of the devices. The high voltage anode layer and/or the low resistance electroconductive member is drawn out from the inside of the envelope to a recess formed in the outer surface of the envelope and is electrically connected to external wiring in the recess.

REFERENCES:
patent: 2000570 (1935-05-01), Nina
patent: 5525861 (1996-06-01), Banno et al.
patent: 5760538 (1998-06-01), Mitsutake et al.

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