Lateral field emission display with pointed micro tips
AssigneeSamsung Display Devices Co., Ltd.
InventorJong-min Kim
Life of this patent
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Abstract
A lateral field emission display in which a cathode and anode are laterally arrayed, and a fabricating method thereof, since the micro tip is formed to be sharp through the reactive ion etching method, efficiency of electron emission is better than a conventional wedge-type tip. Also, since focusing of an electron beam is accurately controlled, a relatively low-voltage driving is possible. Further, since the first gate is further provided above the cathode and the anode is formed to be higher than the second gate, a trace control of an electron-beam emitted from the micro tip is easy and focusing efficiency of the emitted electron beam to the anode is also improved.
Claims10
A lateral field emission display including
- a lower substrate:
- a cathode having a plurality of micro tips whose upper portions are laterally formed on said lower substrate;
- an insulating layer formed on lower portion of said cathode being separated from said micro tips by a predetermined distance;
- a plurality of anodes formed on said insulating layer being separated from said micro tips by a set distance;
- and
- a fluorescent material coated on said anodes,
- wherein each of said micro tips of said cathode is formed to have a predetermined angled surface with respect to a lateral surface of said lower substrate and wherein an end of said micro tips of said cathode is swelled up away from said lower substrate.
A lateral field emission display including a substrate;
- a cathode having a plurality of laterally sharpened micro tips on said substrate;
- a first insulating layer formed on said substrate being separated from said micro tips by a predetermined distance;
- a second insulating layer formed on said substrate being separated from said first insulating layer by a predetermined distance;
- a gate on said first insulating layer;
- an anode on said second insulating layer, wherein each of said micro tips comprises a portion shaped as a polygonal body with a spear-shaped tip portion and wherein an end of each of said micro tips of said cathode is swelled up away from said substrate.
A lateral field emission display comprising:
- a substrate;
- a cathode having a plurality of micro tips, sharpened in a lateral direction on said substrate, each of which is formed to have a spear-tip shape to thereby emit electrons from a single point;
- a first gate formed on said cathode with a first insulating layer interposed therebetween;
- a second gate formed on said substrate with a second insulating layer interposed therebetween;
- and
- an anode formed on said substrate with a third insulating layer interposed therebetween being separated from said second gate in a lateral direction.
Dependencies are inferred from the claim text.