Patent ID: 6144351
Filing Date: 2000-11-07
Classification: H01J

Abstract:
A field emission display baseplate, comprising:a substrate having a generally planar working surface;a first layer of generally conductive material coating at least a portion of the working surface of said substrate, said first layer of generally conductive material having a first conductivity;a first layer of generally insulative material overlying at least a portion of said first layer of generally conductive material, said first layer of insulative material has an opening formed therein over said first layer of generally conductive material to expose said first layer of generally conductive material through said opening;a second layer of generally conductive material overlying at least a portion of said first layer of insulative material including said opening, said second layer of generally conductive material extends into said opening to contact said first layer of generally conductive material, said second layer of generally conductive material having a surface on which at least one emitter is formed, said second layer of generally conductive material having a second conductivity that is less than said first conductivity;a second layer of generally insulative material overlying a substantial portion of said second layer of generally conductive material, said second layer of generally insulative material having formed an opening surrounding said emitter; anda third layer of generally conductive material overlying at least a portion of said second layer of generally insulative material, said third layer of generally conductive material having formed therein an opening surrounding said emitter, said third layer of generally conductive material forming an extraction grid for said field emission display baseplate.