CPC Subgroup Additional Only
H01J 2329/4604 Control electrodes
Full Title
Electron emission display panels, e.g. field emission display panels > Arrangements of electrodes and associated parts for generating or controlling the electron beams > Control electrodes
2 direct subcodes
Child Classifications
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- H01J 2329/4608 Gate electrodes
- H01J 2329/4639 Focusing electrodes