Field emission cathode with confluence electrode

Abstract

The invention is a kind of field transmitting negative electrode which has an affluxion electrode. The invention is a structure for carbon nano pipe field transmitting negative electrode manufactured with screen printing method, the structure can reduces the resistance of the electrode, and upgrades the uniformity of the negative potential. It includes a transparent conductive electrode on the glass base, an affluxion electrode and the negative electrode on the transparent conductive electrode, the affluxion electrode is narrower than the transparent conductive electrode. The negative and the affluxion electrode are arranged on the transparent conductive electrode, the affluxion electrode also can be set at one side of the negative electrode or in the middle of the negative electrode. The negative electrode 4 also can be produced on the transparent conductive electrode and covers on the affluxion electrode. The technology can reduce the electrode resistance, avoids the catalyst effect to the negative electrode oxidization caused by the electrode broken circuit and the metal in the process of baking, and upgrades the reliability of the device.

Description

technical field [0001] The invention relates to a field emission device, in particular to a carbon nanotube field emission cathode made by screen printing, which is used to reduce the impedance of the electrode and improve the uniformity of the cathode potential. Background technique [0002] The field emission device is a kind of cold cathode emission, which has the characteristics of high current density, low power consumption, fast response speed, wide operating temperature range, radiation resistance, and high reliability. Therefore, the research on field emission devices has been very active, especially in recent years. The emergence of carbon nanotube materials makes it possible to print field emission devices and has broad development prospects. A typical carbon nanotube field emission cathode structure such as figure 1 As shown, it includes a transparent conductive electrode 2 fabricated on a glass substrate 1, a metal electrode 3 fabrica...

AI Technical Summary

Problems solved by technology

Silver has good electrical conductivity and silver paste has a low firing temperature, so silver paste (Ag) is generally used to make metal electrodes, but carbon nanotube electrodes made on silver electrodes made of silver paste, in the final sintering process It will cause the oxidation of carbon nanotubes, so if silver electrodes are used to make metal electrodes according to traditional methods, effective carbon nanotube field emission cathodes will not be obtained

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