Vacuum in‐line sealing technology of the screen‐printed CNT‐FEA

Abstract We have fabricated a carbon nanotube field emission display (CNT‐FED) panel with a 2‐inch diagonal size by using a screen printing method and vacuum in‐line sealing technology. The sealing temperature of the panel was around 390 °C and the vacuum level was obtained with 1.4×10‐5torr at the sealing. When the field emission properties of a fabricated and sealed CNT‐FED panel were characterized and compared with those of the unsealed panel which was located in a test chamber of vacuum level similar with the sealed panel. As a result, the sealed panel showed similar I‐V characteristics with unsealed one and uniform light emission with very high brightness at a current density of 243 μA/cm2, obtained at the electric field of 10 V/μm.