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Method for making cold-cathode fluorescent lamp tube

A technology for cold cathode fluorescent lamps and lamp tubes, which is applied in cold cathode manufacturing, electrode system manufacturing, discharge tube/lamp manufacturing, etc. It can solve the problems of affecting appearance quality, affecting the life of cold cathode fluorescent lamps, and low efficiency.

Inactive Publication Date: 2004-03-17
钱德锋
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, the production of cold cathode fluorescent lamps adopts the process of sealing first and then exhausting. This process causes the cathode to be easily oxidized, which seriously affects the life of cold cathode fluorescent lamps. Some exhaust tail pipes are still left on the lamp tube, which affects the appearance quality and restrictions. Limit the scope of use, not conducive to the promotion of use
There are also some research institutes who have tried the bell-type exhaust first and then seal technology in the past. This technology needs to use electric sealing. The equipment required is complicated and the efficiency is low. It is not suitable for mass production and has not been popularized.

Method used

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  • Method for making cold-cathode fluorescent lamp tube
  • Method for making cold-cathode fluorescent lamp tube
  • Method for making cold-cathode fluorescent lamp tube

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A. Burn a Φ2.5mm glass bead 2 near one end of the Φ0.4mm electrode wire 1, and the electrode wire 1 is Dumet wire, such as figure 1 , spot welding 4 pieces of mercury release and suction electrode sheet 3 at the end of the electrode wire 1 outside the glass bead 2, this electrode is made of mercury release and suction tape produced by Huadong Electronic Tube Factory, and the mercury release and suction electrode sheet is 2.0mm wide. Long 6.5mm, spot weld a V-shaped metal wire 4 at the other end of electrode wire 1, as figure 2 as shown,

[0029] B. Clean a light lead glass tube 6 with a diameter of 4.1mm, a wall thickness of 0.7mm and a length of 250mm with deionized water, dry it, and use butyl acetate and cotton glue solution and 6400K tricolor phosphor powder The slurry is coated on the inner wall of the glass tube 6 by the powder suction method, and then put into a chain-type tube baking furnace at 500-580°C to bake the tube. After the tube is baked, wipe off the ...

Embodiment 2

[0035] The method is as in Example 1, but the electrode wire 1 adopts a tungsten wire with a diameter of 0.3 mm, and the mercury releasing and inhaling electrode 3 adopts 3 pieces, and a tungsten wire with a length of 2.5 mm and a diameter of 0.5 mm is welded on the mercury releasing and inhaling electrode As the emitter electrode, the oxide emission material is coated on the tungsten wire, the glass tube is a hard material glass tube, the length of the glass tube is 150mm, the inner wall is not coated with phosphor powder, and the tube is filled with neon gas 4.655×10 -2 Pa. The cold cathode fluorescent lamp thus prepared is red, has a wavelength of 635nm, and has good fog penetration performance.

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Abstract

The method for manufacturing cold-cathode fluorescent lamp tube incldues the following steps: sintering a ball-shaped glass bead on an electrode wire, respectively spot-welding hydragyrum-releasing gas-sucking electrode sheet and cathode made of V-shaped metal wire at two ends of electrode wire, respectively inserting cathode from two ends of glass tube, burn-sealing one end of glass tube, vacuum-pumping and injecting inert gas, burn-sealing another end of glass tube, melt-sealing between lamp tube and glass bead with flame, removing residual glass and cutting off V-shaped metal wire, after the cathode is hydragyrum-roasted activating gas-sucking agent so as to obtain the invented cold-cathode fluorescent lamp tube, and its service life can be up to above 1.8 ten thousand hr.

Description

technical field [0001] The invention relates to a method for manufacturing a cold cathode fluorescent lamp. Background technique [0002] At present, the production of cold cathode fluorescent lamps adopts the process of sealing first and then exhausting. This process causes the cathode to be easily oxidized, which seriously affects the life of cold cathode fluorescent lamps. Some exhaust tail pipes are still left on the lamp tube, which affects the appearance quality and restrictions. The scope of use is limited, which is not conducive to promoting the use. There are also some research institutes who tried the bell-jar type exhaust first and then seal technology in the past. This technology needs to use electric sealing, which requires complicated equipment and low efficiency. It is not suitable for mass production and has not been popularized. Contents of the invention [0003] The object of the present invention is to provide a kind of production equipment simple, be s...

Claims

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Application Information

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IPC IPC(8): H01J9/00H01J9/02H01J9/385H01J9/40H01J61/04H01J61/12
Inventor 钱德锋
Owner 钱德锋