Patent ID: 6629869
Filing Date: 2003-10-07
Classification: G09G,H01J,Y10S

Abstract:
A method of making a field emission cathode, comprising the steps of:depositing a layer of conductive material over a first substrate; depositing an electrically resistive pillar over said layer of conductive material, said electrically resistive pillar having a substantially flat surface spaced from and substantially parallel to said first substrate; depositing a layer of cathode material over said surface of said electrically resistive pillar, said layer of cathode material having a substantially flat exposed surface spaced from and substantially parallel to said first substrate; constructing a plurality of field emission cathodes over said layer of conductive material, said field emission cathodes having interstices therebetween to produce thereby a cathode assembly; depositing a spacer material in said interstices; depositing an indium tin oxide layer over a second substrate; depositing a phosphor film layer over said indium tin oxide layer to produce thereby an anode assembly; and joining said cathode assembly to said anode assembly, said spacer material thereby contacting said phosphor film layer.