Ise Electronics Corporation has test-produced a display device which uses carbon nanotubes as the electron source. The discharged electrons collide with the fluorescent surface of the display device at 10KV, resulting in a “dazzling” brightness. The area of this display measures 66mm by 66mm.
Carbon nanotubes were discovered by scientists at NEC Corporation while they were searching for conventional fullerenes. These microscopic tubes consist of hexagonal lattices of carbon atoms arranged spirally to form concentric cylinders which resemble miniaturized rolls of chicken wire. Two or more of the tubes with different diameters are frequently arranged concentrically. Diameters range from 2nm to several tens of nanometres, and the maximum length is about one micron. The tubes are far thinner than graphite whiskers and are nearly perfect crystals.
Source: Japan New Materials Report http://www.jnmr.com/dez/online.html