Method for making anodized aluminum template and method for making field emission cathode array material using the template

A technology of anodic aluminum and field emission cathode, which is applied in anodizing, cold cathode manufacturing, electrode system manufacturing, etc., can solve the problems of rationality limitation of preparation process, good field emission cathode array, and no preparation performance, etc. The effect of area start-up voltage, simple hole arrangement, and clean surface

Active Publication Date: 2011-11-30
FUZHOU UNIV
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Problems solved by technology

[0005] At present, some people have proposed some schemes to prepare nano-arrays by self-assembly method and template method, and some people have used anodized aluminum oxide templates to prepare nano-materials. However, due to the limitation of the rationality of the preparation process Or the poor regularity of the template and other reasons, there is no field emission cathode array with good performance

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  • Method for making anodized aluminum template and method for making field emission cathode array material using the template
  • Method for making anodized aluminum template and method for making field emission cathode array material using the template
  • Method for making anodized aluminum template and method for making field emission cathode array material using the template

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Embodiment Construction

[0053] The present invention will be described in detail below in conjunction with the accompanying drawings.

[0054] See figure 1 , to prepare a large-area anodized aluminum template with regular shape and clean surface. The specific process is as follows:

[0055] (1) Anneal the high-purity aluminum sheet at 500°C for 4 hours under nitrogen protection.

[0056] (2) The annealed aluminum sheet was ultrasonically cleaned with acetone and pure water respectively.

[0057] (3) Coat the back with organic matter protection first, dry and corrode in 5% NaOH solution for 8 minutes to remove the oxide layer, then rinse with water, and use perchloric acid ethanol solution (perchloric acid: ethanol solution = 1: 4 (volume ratio)) electrochemical polishing. The distance between the plates is 8cm; the current: 200mA, clamped on the rubber pad, the rubber strip is required to be half submerged below the polishing liquid surface, and the electropolishing time is 10min.

[0058] (4) Th...

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Abstract

The invention relates to a method for manufacturing an anodic aluminum oxide template and a method for manufacturing a field emission cathode array material by using the aluminum oxide template. The anodic aluminum oxide template with a regular appearance and a clean surface is manufactured by adopting a series of surface protection measures; and a field emission vertical nanowire or nanotube array cathode material is manufactured by pouring organic substances, metal organic solution or sol into a nano hole of the aluminum oxide template by a water method, a heat method and the like through processes such as gelation, high temperature carbonization, aluminum oxide template removal and the like. The field emission cathode material manufactured by the method has regular appearance and low starting voltage during field emission performance test; furthermore, the method process is simpler; and manufacturing of large-area field emission materials can be realized easily.

Description

technical field [0001] The invention belongs to the technical field of field emission display, and mainly relates to a method for making a field emission vertical nanowire or nanotube array cathode material by using an alumina template method. Background technique [0002] Field emission display is a kind of flat panel display, which is the product of the combination of display and vacuum microelectronics. Field emission adopts an array cold cathode, and through an external electric field, the metal surface barrier is reduced and the width is narrowed, so that electrons can escape through the surface barrier. The principle of emitting electrons to bombard the anode fluorescent material to emit light can be used in the integrated preparation of large-area flat-panel displays. How to obtain a cathode material that is beneficial to electron emission is one of the most important problems facing the development of field emission displays. There are two main ways to solve this p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J9/02C25D11/04
Inventor 杨尊先郭太良李福山王灵婕叶芸张永爱胡利勤李松
Owner FUZHOU UNIV
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