Carbon nanotube field emission array and method for fabricating the same
AssigneeSamsung SDI Co., Ltd.
InventorWon-bong Choi
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Abstract
A field emission array (FEA) using carbon nanotubes having characteristics of low work function, durability and thermal stability, and a method for fabricating the same are provided. The field emission array uses carbon nanotubes as electron emission sources, thereby lowering a work function and dropping driving voltage. Accordingly, a device can be driven at low voltage. In addition, resistance to gases, which are generated during the operation of a device, is improved, thereby increasing the life span of an emitter. The method prints a mixed paste using extrusion or screen printing and performs sintering, thereby fusing carbon nanotubes such that the carbon nanotubes are aligned in a single direction.
Claims18
A method of fabricating a field emission array using carbon nanotubes, the method comprising the steps of:
- (a) forming cathodes on a rear substrate in a striped pattern;
- (b) printing a mixture of carbon nanotubes, metal powder and organic binder on predetermined areas of the cathodes;
- (c) vaporizing the organic binder by sintering the mixture and anchoring the carbon nanotubes on the cathodes by diffusing the metal powder;
- (d) combining a front substrate, on which anodes are formed in a striped pattern, with the rear substrate having the cathodes on which the carbon nanotubes are anchored;
- forming an insulating layer on the tops of the cathodes other than portions to which the carbon nanotubes are to be adhered and on the top of the rear substrate where the cathodes are not formed, before the step (b);
- and
- forming gates on the insulating layer after the step (c).
A method of fabricating a field emission array using carbon nanotubes, the method comprising the steps of:
- (a) forming cathodes on a rear substrate in a striped pattern;
- (b) printing a mixture of carbon nanotubes, metal powder and organic binder on predetermined areas of the cathodes;
- (c) vaporizing the organic binder by sintering the mixture and anchoring the carbon nanotubes on the cathodes by diffusing the metal powder;
- (d) combining a front substrate, on which anodes are formed in a striped pattern, with the rear substrate having the cathodes on which the carbon nanotubes are anchored;
- wherein in the step (b), the printing is performed by an extrusion method using a filter for aligning the carbon nanotubes.
Dependencies are inferred from the claim text.