Patent ID: 6027632
Filing Date: 2000-02-22
Classification: H01J

Abstract:
A method comprising the steps of:providing an initial structure in which a group of control electrodes overlie a dielectric layer, a multiplicity of electron-emissive elements comprising electrically non-insulating emitter material are respectively situated largely in dielectric openings extending through the dielectric layer and are exposed through control apertures extending through the control electrodes, and an excess layer comprising the emitter material overlies the control electrodes and portions of the dielectric layer in spaces between the control electrodes;initially removing portions of the emitter material of the excess layer overlying the dielectric layer in the spaces between the control electrodes; andsubsequently removing portions of the emitter material of the excess layer overlying the control electrodes above the electron-emissive elements so as to expose the electron-emissive elements.