Display devices

Details Display devices Display devices

1998-04-30

1999-12-28

Patel, Vip

Electric lamp and discharge devices

Cathode ray tube

Beam deflecting means

313431, 313495, H01J 2970

Patent

active

060085738

ABSTRACT:
Area cathode device for generating free electrons in a first evacuated chamber comprises a back plate; a silica glass substrate peripherally sealed to the back plate to produce a second chamber; a gas contained in the second chamber; a layer of photo-sensitive material disposed on the surface of the substrate external to the first chamber; a cathode phosphor layer disposed between the back plate and the substrate; and a pair of electrodes facing each other from opposite sides of the second chamber for energizing the gas to generate a plasma for exciting the cathode phosphor layer to generate light energy for producing electron emissions from the photo-sensitive material.

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