Field emission device having stamped substrate and method

A field emission device comprising:

• a plastically-deformable, ceramic, stamped substrate having first and second opposed surfaces, and having walls defining a plurality of apertures;
• an electron-emissive layer disposed on the first opposed surface of the plastically-deformable, ceramic, stamped substrate and defining an electron emissive edge proximate to each of the plurality of apertures;
• a cathode disposed on the electron-emissive layer proximate to the electron emissive edges;
• a plurality of extraction electrodes, each of the plurality of extraction electrodes comprising a continuous conductive layer being disposed on the walls defining one of the plurality of apertures to define a gate within each of the plurality of apertures, each of the plurality of extraction electrodes being electrically isolated from the other ones of the plurality of extraction electrodes, each gate being proximate to one of the electron emissive edges, the cathode overlying the plurality of extraction electrodes;
• and
• an anode opposing the first opposed surface of the plastically-deformable, ceramic, stamped substrate.

A field emission device comprising:

• a plastically-deformable, ceramic, stamped substrate, having first and second opposed surfaces, and having first walls defining a plurality of apertures;
• a plurality of first grooves formed in the first opposed surface and defining a plurality of lands in the first opposed surface;
• a plurality of second grooves formed in the second opposed surface, each of the plurality of second grooves crossing the plurality of first grooves at an angle to define a plurality of intersecting regions, the plurality of apertures being disposed one each at the plurality of intersecting regions, each of the plurality of second grooves being defined by second walls;
• an electron-emissive layer disposed on the plurality of lands and defining an electron emissive edge proximate to each of the plurality of apertures;
• a cathode disposed on the electron-emissive layer at each of the plurality of lands;
• an extraction electrode being disposed in each of the plurality of second grooves on the second walls thereof and further being disposed on the first walls of the ones of the plurality of apertures partially defined thereby, such that a gate is defined proximate to each of the electron emissive edges;
• and
• an anode opposing the first opposed surface of the plastically-deformable, ceramic, stamped substrate.