Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High photosynthetic efficiency external electrode porcelain tube cathode fluorescent lamp and its making method

A technology for fluorescent lamps and external electrodes, which is applied in the manufacture of discharge tubes/lamps, cold cathodes, and electrode systems. It can solve the problem of high voltage required for gas discharge, prolong the life of the lamp, lower the working voltage, and increase the brightness. Effect

Inactive Publication Date: 2006-07-12
SOUTHEAST UNIV
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Existing external electrode fluorescent lamps (EEFL) such as figure 1 , it has a larger diameter, and the voltage required for gas discharge is also relatively high. It is now being used in LCD TVs as a backlight source. It can be expected that the application of these cold cathode fluorescent lamps will develop rapidly. The problems faced are also to reduce the operating voltage and improve luminous efficiency.

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
  • High photosynthetic efficiency external electrode porcelain tube cathode fluorescent lamp and its making method
  • High photosynthetic efficiency external electrode porcelain tube cathode fluorescent lamp and its making method
  • High photosynthetic efficiency external electrode porcelain tube cathode fluorescent lamp and its making method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0025] The fluorescent lamp of the present invention uses a slender fluorescent lamp glass tube 2 with two openings as the main body. The inner surface of the fluorescent lamp glass tube 2 is coated with fluorescent powder 1. The two ends of the fluorescent lamp glass tube 2 are placed with ceramic tubes 5, The tube 2 is filled with a discharge gas 3, and a pair of metal discharge electrode films 4 are provided on the outer surfaces of the two ends of the fluorescent lamp glass tube 2.

[0026] The ceramic tubes 5 placed at both ends of the fluorescent lamp glass tube 2 are made of alumina or magnesium aluminate with high secondary electron emission coefficient. The discharge gas 3 charged into the fluorescent tube 2 is an inert gas helium, or neon, or argon, or xenon, or a mixed gas thereof, and a discharge gas composed of mercury metal. A pair of metal discharge electrode films 4 prepared on the outer surfaces of the two ends of the fluorescent lamp glass tube 2 are metal thin f...

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

PropertyMeasurementUnit
Thicknessaaaaaaaaaa
Login to View More

Abstract

The high-efficiency low-voltage external electrode fluorescent lamp (EEFL) for LCD backlight source and illumination comprises: using a slim two-end-opening fluorescent glass tube (2) as main body with fluorescent powder (1) on inner surface and a ceramic tube (5) on inner surface of ends; filling discharge gas (3) in tube (2), setting a couple of metal discharge electrode membranes (4) on outer surface of tube (2) end. Wherein, when manufacturing the lamp, clearing and drying the EEFL, costing fluorescent powder 1 on inner surface, arranging ceramic tube such as alumina ceramic tube 5 on two ends of tube 2; then, sintering and sealing one opening of the tube.

Description

Technical field [0001] The invention relates to an external electrode fluorescent lamp (EEFL) used in occasions such as liquid crystal display backlight, electrical lighting and daily lighting, in particular to an external electrode fluorescent lamp with low working voltage and high luminous efficiency. Background technique [0002] The cold cathode fluorescent lamp is a new type of light source that does not require the heating of the cathode filament, and the tube diameter can be made very thin (usually below 10mm, such as 1.8mm). There are two types of cold cathode fluorescent lamps, namely internal electrode fluorescent lamps (CCFL) and external electrodes Fluorescent lamp (EEFL). The electrons and ions required for gas discharge in a cold cathode fluorescent lamp are composed of a gas ionization process and the secondary emission of electrodes, which are different from the gas discharge formed by the thermionic emission of a hot cathode fluorescent lamp (HCFL). The internal ...

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): H01J65/00H01J61/36H01J61/16H01J9/00H01J9/40
Inventor 张晓兵英达正
Owner SOUTHEAST UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com