Patent ID: 6197607
Filing Date: 2001-03-06
Classification: H01J

Abstract:
A method of fabricating a substantially planar grid of a field emission array, comprising:disposing a first layer of dielectric material over a substrate and emitter tips of the field emission array;disposing a second layer comprising a material selectively etchable with respect to said dielectric material over said first layer;planarizing said second layer to expose a portion of said first layer disposed above said emitter tips;substantially removing dielectric material exposed through said second layer and adjacent said emitter tips;substantially removing said second layer;disposing a third layer of dielectric material over said first layer and said emitter tips;disposing a fourth layer of semiconductive material or conductive material over said third layer;planarizing said fourth layer to expose a portion of said third layer; andsubstantially removing dielectric material exposed through said fourth layer to define an aperture through said fourth layer and substantially above each of said emitter tips.