25.2: Fabrication of CNT Electron Source by Simple Stacking for Obtaining Uniform Emission Distributions

Abstract

We have developed the technique of fabricating triode structure with simple stacking method by forming an extremely smooth CNT layer and by activating CNT with a unique laser irradiation method. A test panel proves good emission property and uniformity.

Carbon-nanotube cathode modified by femtosecond laser ablation

“…Carbon nanotube (CNT) is the ideal material for a cathode emitter of a Field Emission Display (FED) [1]- [3]. However, CNT cathode prepared by the printing method has far from ideal emission characteristics, because the CNTs lie flat in the cathode and have random orientation.…”

“…Thus additional processing is required to produce CNTs having ideal characteristics for FED. A variety of different processing methods, including peeling, scratching, ion bombardment [4], and nanosecond laser ablation [3], have been proposed and investigated. However, it has not been possible to obtain sufficient emission uniformity at low applied electric fields using these methods.…”

53.1: Fabrication of CNT Emitter Array with Polymer Insulator

“…Furthermore, because of both large Young's modulus and the different coefficient of thermal expansion from the glass substrate, the high temperature CVD process for the SiO 2 film of large size would bend the substrate or the substrate would be cracked during or after the high temperature thermal vacuum-seal process. Although another choice of insulator is printable glass [6], the minimum line-width of this material is several tens of micrometers and the gate-hole density of a pixel is restricted.…”