Single tip redundancy method and resulting flat panel display

A method of fabricating a high resolution matrix addressed flat panel display having cathode columns and gate lines and single field emission microtip redundancy, comprising:

• providing a dielectric base substrate;
• forming parallel, spaced conductors acting as said cathode columns for said display upon said substrate;
• forming a layer of insulation over said cathode columns;
• forming spaced conductors acting as gate lines for said display over said layer of insulation, orthogonally to the cathode columns;
• the intersections of said cathode columns and gate lines are pixels of said display;
• forming a plurality of openings at said pixels extending through said gate lines and said insulating layer;
• forming at each of said pixels a plurality of field emission microtips connected to and extending up from said cathode conductor columns and into said plurality of openings forming parallel;
• and
• forming a circular resistive layer in said gate lines surrounding each of said field emission microtips, whereby emission uniformity is obtained.

A high resolution matrix addressed flat panel display having single field emission microtip redundancy comprising:

• a dielectric base substrate;
• parallel, spaced conductors acting as cathode columns for said display being formed upon said substrate;
• a layer of insulation over said cathode columns;
• parallel, spaced conductors acting as gate lines for said display being formed over said layer of insulation at a right angle to said cathode columns;
• the intersections of said cathode columns and gate lines are pixels of said display;
• a plurality of openings at said pixels extending through said insulating layer and said gate lines;
• at each of said pixels are a plurality of field emission microtips connected to and extending up from said cathode columns and into said plurality of openings;
• and
• a circular resistive layer in said cathode columns surrounding each of said field emission microtips whereby emission uniformity is obtained.

A method of fabricating a high resolution matrix addressed flat panel display having cathode columns and gate lines and single field emission microtip redundancy, comprising:

• providing a dielectric base substrate;
• forming parallel, spaced conductors acting as said cathode columns for said display upon said substrate;
• forming a layer of insulation over said cathode columns;
• forming spaced conductors acting as gate lines for said display over said layer of insulation, orthogonally to the cathode columns;
• the intersections of said cathode columns and gate lines are pixels of said display;
• forming a plurality of openings at said pixels extending through said gate lines and said insulating layer;
• forming at each of said pixels a plurality of field emission microtips connected to and extending up from said cathode conductor columns and into said plurality of openings forming parallel;
• and
• forming a circular resistive layer in said cathode columns surrounding each of said field emission microtips, whereby emission uniformity is obtained.