Emissive displays

Field emission displays are VFDs that use field emission cathodes as the electron source. The cathodes can be molybdenum microtips,33-35 carbon films,36,37 carbon nanotubes,38" 16 diamond tips,47 or other nanoscale-emitting materials.48 Niobium silicide applied as a protective layer on silicon tip field emission arrays has been claimed to improve the emission efficiency and stability.49 ZnO Zn is used in monochrome field emission device (FED) displays but its disadvantage is that it saturates at over 200 V.29... 

Morimoto, K. Phosphors for Vacuum Fluorescent Displays and Field Emission Displays. In Phosphor Handbook. Shionoya, S. Yen, W. M. Eds. CRC Press New York, 1998, Chapter 8, pp 561-580. 

Thuesen, L. H. Yaniv, Z. In Extended Abstracts of the First International Conference on the Science and Technology of Emissive Displays and Lighting, San Diego, CA, Nov 12-14 2001 13-16. 

Helical (carbon) nanocoils have received attention recently255-257 for their properties as field emitter and thus for the fabrication of flat panel field emission displays. The properties depend on the electrical field generated due to the helical nanostructure, and to the characteristics of the tip of the carbon nanocoil. In fact, carbon... 

The field emission display held a particular fascination for this field, because of its potentially large market [36,44-49]. Field emission displays (FEDs) are flat panel displays, which are a flat panel equivalent of the cathode ray tube (CRT), but in which each pixel is addressed by its own electron beam from a field emitter, rather than having a beam scanned across it as in the CRT (Fig. 13.8) [44]. The emitters can be diode or triode type. The triode type is the most elegant, the diode type is lower cost. 

Fig. 13.8 Schematic of a field emission display showing triode system with carbon emitter film.

Collectively, the molecular and atomic emissions displayed in Table 8.1 give a radiant spectrum as shown in Figure 8.7. 

LCDs are based on subtractive color technology and are therefore not as bright as emissive displays such as CRTs and the newer organic light-emitting devices. 

Organic light-emitting devices (OLEDs) are one of several technologies competing for the market for next-generation emissive flat panel displays. It is the one most likely to triumph over field emission displays (basically CRT technology in miniature) and plasma display panels. 

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