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Method of manufacturing carbon nano-tube field emission device

A carbon nanotube and emitter technology, applied in the field of manufacturing carbon nanotube field emission devices, can solve the problem of difficulty in obtaining high-purity CNT electron emitters and the like

Inactive Publication Date: 2005-11-09
SAMSUNG SDI CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Since CNT paste includes various organic and inorganic solvents, it is difficult to obtain high-purity CNT electron emitters

Method used

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  • Method of manufacturing carbon nano-tube field emission device
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  • Method of manufacturing carbon nano-tube field emission device

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Embodiment Construction

[0027] Hereinafter, a method of manufacturing a CNT emitter and a method of manufacturing a field emission device using the CNT emitter according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings. In the figures, field emission devices including CNTs are exaggerated for clarity. In particular, display one element larger than other elements when necessary.

[0028] Figures 1A to 1I is a cross-sectional view illustrating a method of fabricating a CNT emitter according to an embodiment of the present invention.

[0029] Such as Figure 1A As shown, the CNT powder was mixed with a dispersant made of an organic solvent, such as ethanol, or an inorganic dispersant, such as water2. Next, the mixture is applied onto the surface of the first substrate 1 formed of Si or sodalime glass.

[0030] Such as Figure 1B As shown, the dispersant 2 was removed by natural or rapid drying, leaving only the CNTs on the first subst...

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Abstract

A carbon nanotube emitter and a method of manufacturing a carbon nanotube field emission device using the carbon nanotube emitter. Powdered carbon nanotubes are adsorbed onto a first substrate. A metal is deposited on the carbon nanotubes. The resultant structure is pressure-bonded to a surface of a cathode. The first substrate is spaced apart from a second substrate to tense the carbon nanotubes, so that the carbon nanotubes are perpendicular to the first substrate.

Description

technical field [0001] The present invention relates to a method for manufacturing a carbon nanotube (CNT) field emission device, in particular to such a method for manufacturing a field emission device, wherein the thermal shock caused by the high temperature process is reduced. Background technique [0002] Carbon nanotubes (CNTs) are widely used as field emitters for backlights used in field emission displays (FED) and liquid crystal displays (LCD). Such CNTs have good electron emission properties and chemical and mechanical lifetimes. The properties and applications of such CNTs have been studied. [0003] Conventional field emitters are generally tiny tips made of a metal such as molybdenum (Mo). However, the lifetime of such microtips is shortened by atmospheric gas, non-uniform electric field, and the like. Furthermore, in order to drive the microtip at low voltage, the work function of the microtip must be reduced. However, there is a limit to reducing the work f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J1/304H01J9/02H01J63/02
CPCB82Y10/00H01J2201/30469H01J1/304H01J63/02H01J2209/0223H01J9/025E03D11/146E03D1/012
Inventor 郑太远许廷娜李晶姬
Owner SAMSUNG SDI CO LTD