Abstract: Two fabricating methods of CNT emitters in large size FED are studied.Those are the spraying and the screnn-printing.Purification and disperse of CNT preparation of CNT paste, process of spraying and screen-printing are also introduced.With the simulations, the SEM graphics and the measurement results of field emission and both types of CNT emitters are analysed.The screen printing is more suitable for fabrication of emitters in large size CNT-FED.The post-processing technique of screen printing CNT emitters is also shown in this paper.

Key words: field emission, cathode, flat panel display, carbon nanotube