Abstract
This paper describes the fabrication of a backlight unit for liquid crystal display based onprinted carbon nanotube field emitters with lateral gate and additional meshstructures. The device architecture has been optimized through field emissioncharacterization and supporting numerical simulation. The emission current dependsstrongly on the cathode–gate gap, mesh position, and mesh bias. Direct observationof luminous images on a phosphor screen reveals that the electron beamsundergo a noticeable shrinkage along the lateral direction with increasing anodebias, which is in good agreement with the simulation results. We suggest anddemonstrate a modified structure equipped with double emitter edges leading to∼20% improvedphosphor efficiency (34.4 lm W−1) and luminance (9600 cd m−2), compared to those from a single edge structure.
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