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A cathode preparing method for improving field emission stability of printed carbon nanotube film

A carbon nanotube film, carbon nanotube technology, applied in cold cathode manufacturing, discharge tube/lamp manufacturing, electrode system manufacturing, etc., to increase contact area, improve field emission stability, improve ohmic contact and thermal conductivity. Effect

Inactive Publication Date: 2008-09-03
XI AN JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In view of the defects or deficiencies in the above-mentioned prior art, the purpose of the present invention is to propose a cathode preparation method for improving the field emission stability of printed carbon nanotube films, so as to solve the problems in the stability of existing printed carbon nanotube films. The problem

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  • A cathode preparing method for improving field emission stability of printed carbon nanotube film

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Embodiment 1

[0024] The first embodiment of the present invention that the inventor provides is to manufacture the monochrome carbon nanotube field emission flat panel display with X-Y addressing of dipole structure, and its manufacturing process is as follows:

[0025] 1. Substrate selection and pretreatment

[0026] In this embodiment, ordinary soda-lime glass is used as the substrate 1 . Use detergent to wash off the oil stains on the glass, then use pure water to clean the detergent, and finally use compressed air to dry the glass for later use.

[0027] 2. Purification of Carbon Nanotubes

[0028] The carbon nanotubes used in this embodiment are multi-walled carbon nanotubes prepared by CVD, which contain a lot of impurities mainly including catalyst particles (mainly iron and its oxides). Purification is mainly to remove these impurities. Since the catalyst used in the preparation of carbon nanotubes will exist in carbon nanotubes, it should be removed during use. The carbon nanot...

Embodiment 2

[0049] The second embodiment of the present invention that the inventor provides is to manufacture the color carbon nanotube field emission flat panel display with X-Y addressing of the dipole structure, and its preparation process is exactly the same as embodiment 1, and the difference is that in the anode plate In the manufacturing step 7, the phosphor powders are three colors, and the phosphor powders of the three colors are printed separately. A color carbon nanotube field emission flat panel display with X-Y addressing can be obtained.

Embodiment 3

[0051] The third embodiment of the present invention that the inventor provides is to manufacture the electron source of high-power microwave device, and its manufacturing process is as follows:

[0052] 1. Substrate production

[0053] According to the design requirements and selecting the appropriate material to make the conductive base of appropriate shape. For example, stainless steel or graphite materials are processed into disc-shaped cathode substrates with circular joints (the joints are used to connect with the device and are located at the bottom of the disc), and then the surface is ground and cleaned before entering other Production process;

[0054] 2. Other production processes

[0055] Other manufacturing processes are the same as steps 2-6 in Example 1. The electron source of the high power microwave device can be obtained.

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Abstract

This invention discloses a method for preparing cathode to raise field emission stability of printing carbon nanotube which is characteristic of that said method makes co-sintering treatment to silver slurry printing layer and carbon nanotube printing layer for increasing the contact area between the printed carbon nanotube film and conducted substrate so to improve the ohmic contact and heat conductivity, the lighting stability in high brightness and service life of field emission display made by said method are greatly raised than the normal cathode display device.

Description

technical field [0001] The invention belongs to the intersecting field of vacuum microelectronics technology and nanotechnology, and specifically relates to improving the printing of carbon nanotubes by co-sintering the silver paste printing layer and the carbon nanotube printing layer so that the cathode forms a nested structure of silver / carbon nanotubes A method for ohmic contact and thermal conductivity between a film and a conductive substrate, in particular to a method for preparing a cathode for improving the field emission stability of a printed carbon nanotube film, which uses a silver / carbon nanotube co-sintered cathode The luminescence stability and lifespan of the emissive display under high brightness are significantly improved compared with common cathode devices. Background technique [0002] At present, the cathode preparation technology of carbon nanotube field emission display mainly includes screen printing technology and direct growth technology. The scr...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J9/02
Inventor 朱长纯曾凡光刘兴辉刘卫华
Owner XI AN JIAOTONG UNIV
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