Field emission type display

A field emission display element comprising:

• an anode;
• a fluorescent layer on said anode;
• a board spaced apart from said anode;
• a plurality of cathode lines parallel to each other on said board;
• a first insulating layer having through holes and disposed on said cathode lines;
• a plurality of emitter electrodes on said first insulating layer, each of said emitter electrode connected to one of said cathode lines via a contact in a respective one of said through holes;
• a second insulating layer;
• a gate electrode on said second insulating layer, said gate electrodes being above said cathode lines;
• and
• a plurality of emitter elements formed on said emitter electrodes, said emitter elements exposed from openings on said gate electrode and said second insulating layer,
• wherein a cross point of said plurality of cathode lines and said gate electrode forms a pixel, and numbers of said emitter elements connected to each cathode line are different in said pixel.

A driving method for a field emission display having an anode;

• a fluorescent layer on said anode;
• a board spaced apart from said anode;
• a plurality of cathode lines parallel to each other on said board;
• an insulating layer on said cathode lines;
• a gate electrode on said insulating layer and above said cathode lines;
• a plurality of emitter elements connected to said cathode lines and exposed from openings on said gate electrode and said insulating layer, wherein a cross point of said plurality of cathode lines and said gate electrode forms a pixel, numbers of said emitter elements connected to each cathode line are different in said pixel, comprising:
• impressing a pulse selected from pulses having different duty ratios to at least one of said cathode lines corresponding to an image signal for said pixel.

A driving method for a field emission display having an anode;

• a fluorescent layer on said anode;
• a board spaced apart from said anode;
• a plurality of cathode lines parallel to each other on said board;
• an insulating layer on said cathode lines;
• a gate electrode on said insulating layer and above said cathode lines;
• a plurality of emitter elements connected to said cathode lines and exposed from openings on said gate electrode and said insulating layer, wherein a cross point of said plurality of cathode lines and said gate electrodes forms a pixel, numbers of said emitter elements connected to each cathode line are different in said pixel, comprising:
• impressing a pulse selected from pulses having different intensities to at least one of said cathode lines corresponding to an image signal for said pixel.

A field emission display comprising:

• an anode;
• a fluorescent layer on said anode;
• a plurality of cathode lines parallel to each other and disposed spaced apart from said anode;
• an insulating layer disposed on a side of said plurality of cathode lines facing said anode;
• a plurality of gate electrodes disposed on said insulating layer between said plurality of cathode lines and said anode, a cross point of each of said plurality of gate electrodes and a corresponding group of cathode lines of said plurality of cathodes lines forming a pixel;
• and
• a plurality of emitter elements connected to said cathode lines, each of said emitter elements being exposed through a corresponding opening in said gate electrode and said insulating layer, number of said emitter elements connected to each cathode line in a pixel being different.