Patent ID: 9312089
Filing Date: 2016-04-12
CPC Classification: H01J,Y10S

Claim Text:
1. A method for making field emission cathode, the method comprising: providing a first microchannel plate, wherein the first microchannel plate comprises a first surface and a second surface, opposite to the first surface; the first microchannel plate defines a plurality of first holes extending through the first microchannel plate from the first surface to the second surface; a diameter of each of the plurality of first holes is in a range from about 10 micrometers to about 40 micrometers; and a distance between adjacent first holes is in a range from about 2 micrometers to about 10 micrometers; filling the plurality of first holes with a carbon nanotube slurry, wherein the carbon nanotube slurry is adhered on inner walls of the plurality of first holes; and solidifying the carbon nanotube slurry.