Unlock instant, AI-driven research and patent intelligence for your innovation.

Processing method of field emitting cathode

A technology of field emission cathode and processing method, which is applied in the field of FED, and can solve problems such as difficulty in accurately controlling the processing process and effect, affecting the field emission performance of CNTs thin films, and the limitation of improvement of field emission performance.

Inactive Publication Date: 2013-04-17
QINGDAO RUNXIN WEIYE TECH & TRADE
View PDF2 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the produced CNTs are entangled with each other, the surface is surrounded by pulping materials, and the tips are not protruding. The residual organic matter after sintering still seriously affects the field emission performance of the CNTs film.
In order to solve these problems, people have tried methods such as plasma bombardment, ion beam irradiation, tape sticking], mechanical friction and soft rubber roller rolling to process the screen-printed FED cathode, but because the film is damaged, or it is not easy to accurately control The improvement of field emission performance is also limited due to problems such as processing process and effect
[0004] The method of preparing carbon tube thin film FED cathode by screen printing method (or coating method) has good practical application prospects, but the field emission performance is not satisfactory (mainly in terms of turn-on voltage, emission current and emission stability, etc.)

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Processing method of field emitting cathode
  • Processing method of field emitting cathode

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0017] The invention provides a method for modifying the surface of a screen-printed multi-wall carbon nanotube (MWCNTs) film. Stand to dry and grind again; take 10ml ZrCl3 solution and mix with 0.3gMWCNTs and stir evenly; take appropriate amount of sodium borohydride solid and configure it into a 1mol / L solution with deionized water; take 10ml sodium borohydride and slowly add ZrCl3 solution (containing MWCNTs), and stirred; after the reaction was completely finished, the solution after the reaction was left to stand for 24h, and the upper layer solvent was filtered off; after adding deionized water, put it into a centrifuge, take out the carbon nanotubes and let it dry naturally; put the completely dried After the carbon nanotubes are fully ground, mix them with an appropriate amount of absolute ethanol, put them into an ultrasonic machine for ultrasonic dispersion, and dry the carbon nanotubes naturally after the ultrasonication; after fully grinding, add an organic carrier ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a processing method of a field emitting cathode. The processing method of the field emitting cathode comprises the step of coating zirconium on an MWCNT (Multi Walled Carbon Nano-Tube) by using a chemical method. Shown as a result of a voltage-electric field emitting current (V-I) property experiment, a field emitting property of a sintered sample is better than that of a non-sintered group.

Description

technical field [0001] The invention belongs to the field of FED, in particular to a method for modifying the surface of a screen-printed multi-walled carbon nanotube (MWCNTs) film. Background technique [0002] The main difficulties faced by FED display devices, in addition to problems such as vacuum packaging, all come from the cathode manufacturing process. The difficulties of controlling the uniformity and stability of field emission and reducing the cost of the driving circuit are directly restricted by the material and structure of the FED cathode. Spindt-type devices require the fabrication of hundreds or thousands of cathode arrays of "sharp cones and round holes" within a pixel size range. This makes the photolithography process and thin film preparation very complicated, and the production cost is also very expensive. Difficulties in the manufacturing process of the cathode also lead to poor uniformity of the shape of the cone array and unsatisfactory overall sta...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): H01J9/02
Inventor 任知良王明刚王雪梅
Owner QINGDAO RUNXIN WEIYE TECH & TRADE