A cold cathode lighting element prototype

In this study, we present a prototype of lighting element in which a carbon-containing field emission material is used as the cathode. The operating characteristics, i.e. current-voltage characteristics, current stability, luminance and lifetime of the lighting element are tested. By applying high-voltage phosphor, a maximum brightness of 10000cd/m(2) has been recorded and a lighting element under lifetime test has been operating in DC driving mode for over 2500 It without decay in emission current and brightness. These results imply that the prototype lighting element is suitable for commercial application. (C) 2002 Elsevier Science B.V. All rights reserved.