Fully sealed, high-brightness carbon-nanotube field-emission display

TLDR

A 4.5‑inch fully sealed field‑emission display was fabricated with single‑wall carbon nanotube–organic binders, scalable at temperatures below 415 °C, and vertically aligned CNTs via paste‑squeeze and surface‑rubbing techniques. The display achieved a turn‑on field of 1 V µm⁻¹, emitted 1.5 mA (90 µA cm⁻²) at 3 V µm⁻¹, reached 1800 cd m⁻² brightness at 3.7 V µm⁻¹ across the full 4.5‑inch area, and exhibited only ~7 % current fluctuation over the cathode.

Abstract

A fully sealed field-emission display 4.5 in. in size has been fabricated using single-wall carbon nanotube (CNT)-organic binders. The fabricated displays were fully scalable at low temperature, below 415 °C, and CNTs were vertically aligned using paste squeeze and surface rubbing techniques. The turn-on fields of 1 V/μm and field emission current of 1.5 mA at 3 V/μm (J=90 μA/cm2) were observed. Brightness of 1800 cd/m2 at 3.7 V/μm was observed on the entire area of a 4.5 in. panel from the green phosphor-indium–tin–oxide glass. The fluctuation of the current was found to be about 7% over a 4.5 in. cathode area.