H01J2201/30 - CPC Classification Index

ClassID:

205782 ⎘

H01J2201/30 - CPC Classification

Classification description:

Electrodes common to discharge tubes Cold cathodes

Sub-classes:

H01J2201/304 » Field emission cathodes 11
H01J2201/306 » Ferroelectric cathodes 17
H01J2201/308 » Semiconductor cathodes, e.g. having PN junction layers 7
H01J2201/312 » having an electric field perpendicular to the surface thereof 6
H01J2201/316 » having an electric field parallel to the surface thereof, e.g. thin film cathodes 6
H01J2201/317 » combined with other synergetic effects, e.g. secondary, photo- or thermal emission 6
H01J2201/319 » Circuit elements associated with the emitters by direct integration 31

Recent Application in this class:

20100133980

Field emission device

20090153013

ELECTRON-EMITTING DEVICE, ELECTRON SOURCE, IMAGE DISPLAY APPARATUS, AND METHOD FOR MANUFACTURING ELECTRON-EMITTING DEVICE

20080224102

Black conductive thick film compositions, black electrodes, and methods of forming thereof

20060266984

Black conductive thick film compositions, black electrodes, and methods of forming thereof