External electrode fluorescent lamp with transmitting film coated internal wall

A technology with external electrodes and fluorescent lamps, which is applied in the field of fluorescent lamps, can solve problems such as low driving voltage, high luminous brightness, and unstable working status, and achieve the effects of enhanced electron emission capability, large discharge current, and guaranteed stability

Inactive Publication Date: 2005-10-26
南京杰瑞特光源有限公司
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  • Abstract
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Problems solved by technology

[0003] The purpose of the present invention is to overcome the defects of the existing cold cathode fluorescent lamp (CCFL) that many tubes cannot share one driving power supply; the external electrode fluorescent lamp (EEFL) has low luminous efficiency and unstable working state at low temperature, etc., and provides a new type of external electrode Fluorescent lamps, which not only have the characteristics of general external electrode fluorescent lamps, but also have the advantages of low driving voltage and high luminous brightness

Method used

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  • External electrode fluorescent lamp with transmitting film coated internal wall

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Embodiment Construction

[0008] Control attached picture , its structure is coated with fluorescent powder 2 on the surface of the middle section of the inner wall of the glass tube 1, coated with metal emission film 3 on the two ends of the inner wall of the glass tube 1, and external electrodes 4 are arranged on the two ends of the surface of the glass tube 1.

[0009] The manufacturing method of the external electrode fluorescent lamp with the inner wall coated with the emission film, the process steps are divided into one, cutting the glass tube into the corresponding size, and cleaning; Emitting film; 3. Remove the metal emitting film at both ends of the sealing part by chemical etching; 4. Apply fluorescent powder, bake off the adhesive in the powder, and wipe off the remaining powder on the sealing part; 5. One end of the glass tube is sealed; 6. Exhaust, fill inert mixed gas, inject mercury, and seal off from the exhaust system; 7. Secondary seal off; The outer electrode coated with graphite ...

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Abstract

This invention relates to an external electrode fluorescence lamp coated with an emitting membrane on the inside wall used in large screen display. Its structure is: phosphor powder is coated on the middle section of the inside wall of a glass tube, two metal emit membranes are coated on both ends of inside wall of the glass tube, external electrodes are set on both ends of the tube surface. Advantage: since the external electrode generates capacitance couple not with the glass inside wall but the inside wall metal film layer via a glass medium, the emit ability is increased greatly.

Description

Technical field: [0001] The invention relates to an external electrode fluorescent lamp whose inner wall is coated with an emission film for large-screen display, and has the characteristics of improving the emission capability of the lamp tube electrode and increasing the brightness of the screen. It belongs to the technical field of fluorescent lamps. Background technique [0002] At present, most LCD displays use cold cathode fluorescent lamps (CCFL) as the backlight source. With the increase of the display screen, multiple lamp tubes are needed to maintain the brightness of the screen, and each CCFL needs to be powered by an independent driving power supply. Therefore, the technical solution It is complex, occupies a large space, has low reliability and high product cost; due to its unique volt-ampere characteristics, a group of lamp tubes can be driven in parallel by a driving power supply, but the disadvantage is that: due to its The discharge is based on the coating ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01J65/00
Inventor 邰伟科顾磊
Owner 南京杰瑞特光源有限公司
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