Electron or ion optical arrangements common to discharge tubes or lamps

HELECTRICITY H01Electric elements H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS

H01J2203/00Electron or ion optical arrangements common to discharge tubes or lamps

H01J2203/02Electron guns H01J2203/0204using cold cathodes H01J2203/0208Control electrodes H01J2203/0212Gate electrodes H01J2203/0216characterised by the form or structure H01J2203/022Shapes or dimensions of gate openings H01J2203/0224Arrangement of gate openings H01J2203/0228Curved/extending upwardly H01J2203/0232characterised by the material H01J2203/0236Relative position to the emitters, cathodes or substrates H01J2203/024Focusing electrodes H01J2203/0244characterised by the form or structure H01J2203/0248Shapes or dimensions of focusing electrode openings H01J2203/0252Arrangement of focusing electrode openings H01J2203/0256characterised by the material H01J2203/026Relative position to the gateelectrodes, emitters, cathodes or substrates H01J2203/0264In the same plane as the gate electrodes or cathodes H01J2203/0268Insulation layer H01J2203/0272for gate electrodes H01J2203/0276for focusing electrodes H01J2203/028characterised by the shape H01J2203/0284Dimensions of openings H01J2203/0288characterised by the material H01J2203/0292Potentials applied to the electrodes H01J2203/0296Spin-polarised beams H01J2203/04Ion guns