External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same

A technology of working voltage and fluorescent tubes, applied in the manufacture of electrode systems, manufacture of discharge tubes/lamps, discharge lamps, etc., to achieve high luminous efficiency, prolong life, and improve luminous efficiency

Inactive Publication Date: 2005-11-30
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem is also to reduce the working voltage and improve the luminous efficiency

Method used

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  • External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same
  • External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same
  • External electrode fluorescent lamp tube with high light optical effect low operating voltage and process for making same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A fluorescent tube with high luminous efficiency and low working voltage external electrode that can be used as a liquid crystal backlight source or lighting. It includes a lamp tube glass bulb 2 with both ends closed. External electrodes 4 are arranged on the outer surfaces of both ends of the tube glass bulb 2, discharge gas 3 is filled in the lamp tube glass bulb 2, and a high secondary electron emission material dielectric layer is arranged on the inner surfaces of both ends of the lamp tube glass bulb 2 5. The above-mentioned high secondary electron emission material dielectric layer 5 is a magnesium oxide layer, an aluminum oxide layer or a magnesium aluminate layer. The high secondary electron emission material dielectric layer 5 can also be other high secondary electron emission materials. The above-mentioned lamp tube glass bulb 2 Can be straight, curved, spiral or other shapes.

Embodiment 2

[0021] A preparation process for manufacturing the above-mentioned high-luminous-efficiency low-voltage external-electrode fluorescent lamp tube: take the cleaned and dried lamp tube glass bulb with openings at both ends and two covers that can be sealed to the opening of the lamp tube glass bulb, and place one of them An exhaust pipe 6 is arranged on the cover, a high secondary electron emission material medium layer is set on the inner surfaces of the two covers, a high secondary electron emission material medium layer 5 is prepared on the inner surface of an open end of the lamp tube glass bulb, and then a high secondary electron emission material medium layer 5 is prepared on the lamp tube glass A phosphor layer 1 is arranged on the inner wall of the shell, and a medium layer of high secondary electron emission material is prepared on the inner surface of the other open end of the glass bulb of the lamp tube, and the covers are respectively sealed to both ends of the glass b...

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PUM

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Abstract

This invention relates to working voltage outer electrode fluorescence light tube, which comprises the following parts: light shell with two sealed ends; fluorescence powder layer located on the inner wall of light shell; outer electrode located on the outer surface of the light tube; discharging gas filled in light tube shell; high second electron eradiation materials medium layer located on both ends of light tube shell. The process method comprises the following steps: taking the tube shell and two covers of both ends; processing high second electron eradiation materials medium layer on the other opening terminal inner surface; sealing the two ends of covers and light tubes; processing the outer electrode on both ends of the light tube shell.

Description

technical field [0001] The invention relates to a high light efficiency low working voltage external electrode fluorescent lamp and a preparation process thereof. Background technique [0002] Cold cathode fluorescent lamp is a new type of light source that does not require cathode filament heating and can be made very thin (generally below 10mm, such as 1.8mm). There are two types of cold cathode fluorescent lamps, namely internal electrode fluorescent lamps (CCFL) and external electrode Fluorescent lamps (EEFLs). The electrons and ions required for gas discharge in cold cathode fluorescent lamps are composed of gas ionization process and secondary emission of electrodes, which is different from the gas discharge formed by thermionic emission of hot cathode fluorescent lamps (HCFL). Internal electrode fluorescent lamps have high luminous efficiency, small outer diameter, no need for heating, and long life, so they are widely used in places where the volume of the light sou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J65/00
Inventor 英达正张晓兵童林夙
Owner SOUTHEAST UNIV
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