Field emission from carbon nanotubes for displays

Abstract Carbon nanotube (CNT)-based field emission displays (FED) have been fabricated using well-aligned nanotubes on a glass substrate by paste squeeze and surface rubbing techniques. The fabricated displays were fully scalable at 415°C and showed a high brightness of 1800 cd/m 2 at 3.7 V/μm from the green phosphor. The turn-on fields of 1 V/μm and field emission current of 1.5 mA at 3 V/μm ( J =90 μA/cm 2 ) were observed. The fluctuation of the current was found to be about 7% over a 4.5 in cathode area. Large field enhancement factor (17000–33000) and low turn-on field (1 V/μm) were attributed to well-aligned carbon nanotubes and a large number of carbon nanotubes of 5–10/μm 2 .