A recent study of carbon nanotube (CNT)-field emission display (FED) was described, and luminance uniformity of the experimental panel and the results of the life test of the CNT emitters were revealed. Furthermore, a high-resolution CNT-FED was investigated for graphic-displays. The sub-pixel size was 0.2 mm × 0.6 mm. The configuration of the display was a metal-backed color-phosphor screen, tall-spacer of 0.5-1.0 mm height for individual phosphor line, a metal gate-substrate with tall spacer and chemical vapor deposition (CVD)-grown-CNT on a metal-electrode. In order to improve field-emission characteristics of the CNT cathode, we developed two kinds of new CNT emitters by thermal-CVD. One is an emitter with thin CNTs which were grown on an alumina layer. The emission was extremely increased at lower voltage, compared to our conventional CNT emitter. Another is an emitter with secondary thin CNTs grown on thick CNTs. The emission showed an improvement in emission distribution uniformity.
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