Field transmitting display

Abstract

This invention provides a field emit display including a cathode, an anode, a grating between them, a carbon nm tube array as the field emit unit and an insulation layer between the grating and the cathode among which, one face of the said tube is connected with the cathode characterizing that the other face of the tube array is in the same level with the face of the insulation layer close to the grating and an insulation dielectric film is set between the insulation layer and the grating. The display has rather low grating starting voltage and high uniform carbon nm tube, no catalyst particles or amorphous carbon in the emit end surface.

Description

【Technical field】 [0001] The invention relates to a field emission display, in particular to designing a field emission display based on carbon nanotubes. 【Background technique】 [0002] Carbon nanotubes are hollow carbon tubes first discovered in 1991 by Iijima in the product of arc discharge, which was published in Nature 354, 56 published in 1991. Carbon nanotubes have become a promising field emission cathode material due to their excellent electrical conductivity, perfect lattice structure, and nanoscale tip. They are used in fields such as field emission flat display devices, electric vacuum devices, and high-power microwave devices Has a broad prospect. [0003] Carbon nanotube arrays with defined positions, orientations, and heights can be easily grown on silicon wafers, glass, and other substrates by chemical vapor deposition, and the size of the lattice can be controlled by semiconductor photolithography to achieve high manufacturing. Precision, which makes carbo...

AI Technical Summary

Problems solved by technology

Although the chemical vapor deposition method can generally control the growth height of the carbon nanotube array, its accuracy cannot meet the requirements at present, and it is difficult to accurately control the above-mentioned spacing in an ideal range.

[0012] 3. The upper surface of the carbon nanotube array grown by chemical vapor deposition will inevitably have a thin layer of carbon nanotubes distributed in disorder, and its size is not uniform, and a small amount of catalyst particles or amorphous carbon and other impurities are mixed in, resulting in field emission. Unstable and uneven performance, and may reduce device lifetime

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