Undergate-type triode carbon nanotube field emission display with a microchannel plate

The characteristics of a field emission display (FED), which is based on an undergate-type triode carbon nanotube (CNT), have been examined by incorpo rating an electron-multiplying microchannel plate (MCP) between the anode a nd cathode plates of a FED. The MCP was fabricated by electroless plating a nd the sol-gel process on punched alumina. By applying appropriate voltages between the two faces of an MCP within a FED, the current at the anode pla te of a FED was found to be enhanced more than three to five times, leading to higher brightness. The focusing of field emitted electrons was also imp roved by adjusting the bottom voltage of the MCP, which resulted in a clear image. Therefore, the incorporation of the MCP improved the performance of an undergate-type CNT FED, which can now be considered as one of the key c andidates for flat panel displays.