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Fluorescent lamps and backlight modules

A fluorescent lamp and fluorescent powder technology, applied in the field of fluorescent lamps, can solve problems such as vibration and electromagnetic interference of fluorescent lamps, and achieve the effect of saving space and avoiding vibration

Inactive Publication Date: 2011-12-28
BOE TECH GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, there are certain defects in the existing fluorescent lamps: since the power supply is alternating, the alternating current in the loop generates an alternating magnetic field, thereby generating electromagnetic interference; the electromagnetic interference generated by the current in the fluorescent lamp makes the lamp There is an electromagnetic induction force between the tube and the loop, and the periodic change of this electromagnetic induction force will cause the vibration of the fluorescent lamp

Method used

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  • Fluorescent lamps and backlight modules
  • Fluorescent lamps and backlight modules
  • Fluorescent lamps and backlight modules

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] figure 2 It is a structural schematic diagram of Embodiment 1 of the fluorescent lamp of the present invention. Such as figure 2 As shown, the fluorescent lamp in this embodiment includes an outer lamp tube 201 coated with phosphor powder 208 on the inner wall and an inner lamp tube 209 coated with phosphor powder 212 on the inner wall, and the inner lamp tube 209 is nested inside the outer lamp tube 201 The first end of the outer lamp tube 201 is inserted with a first electrode 202 and a second electrode 203 for a series power supply circuit; a common electrode 204 is arranged inside the second end of the outer lamp tube 201; the first end of the common electrode 204 210 and the first electrode 202 are arranged between the outer lamp tube 201 and the inner lamp tube 209 , and the second end 211 of the common electrode 204 and the second electrode 203 are arranged in the inner lamp tube 209 . The above-mentioned nested double-layer light tube structure is: the area ...

Embodiment 2

[0026] image 3 It is a structural schematic diagram of Embodiment 2 of the fluorescent lamp of the present invention. Such as image 3 As shown, the fluorescent lamp in this embodiment includes an outer lamp tube 201 whose inner wall is coated with phosphor powder 208, and a first end of the outer lamp tube 201 is inserted with a first electrode 202 and a second electrode 203 for connecting a power supply circuit in series. ; A common electrode 204 is provided inside the second end of the outer lamp tube 201 . The first region 205 and the second region 206 are isolated and formed in the outer lamp tube 201 by an insulating layer 207 . Specifically, the second area 206 is arranged side by side with the first area 205 . The first end 210 and the first electrode 202 of the common electrode 204 are arranged in the first area 205 inside the outer lamp tube 201 , and the second end 211 and the second electrode 203 of the common electrode 204 are arranged in the second area 206 i...

Embodiment 3

[0029] Figure 4 It is a structural schematic diagram of Embodiment 3 of the fluorescent lamp of the present invention. Such as Figure 4 As shown, this embodiment is substantially the same as the fluorescent lamp in the first embodiment above, and the difference is that the inner lamp tube 209 and the outer lamp tube 201 in the first embodiment are filled with inert gas and mercury, and the inner walls of each are coated with In this embodiment, both the inner lamp tube 209 and the outer lamp tube 201 are filled with inert gas and mercury, but only the inner wall of the outer lamp tube 201 is coated with phosphor powder 208 .

[0030] In the fluorescent lamp embodiment of the present invention, the ultraviolet rays generated in the inner lamp tube 209 will directly irradiate the fluorescent powder 208 on the inner wall of the outer lamp tube 201 through the transparent insulating layer 207, so that the brightness of the outer lamp tube 201 increases; The electrons in the tu...

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Abstract

The invention relates to a fluorescent lamp and a backlight module. The fluorescent lamp comprises: an outer lamp tube coated with fluorescent powder on the inner wall, a first electrode and a second electrode inserted at the first end of the outer lamp tube for connecting a power supply circuit in series; Common electrode; the first end of the common electrode and the first electrode are arranged in the first area inside the outer lamp tube, and the second end and the second electrode of the common electrode are arranged in the second area inside the outer lamp tube; the first area An insulating layer is provided between the second area and used for isolating the first area and the second area. The backlight module adopts the fluorescent lamp of the present invention as the backlight. The electromagnetic interference generated by the invention has very little influence, does not cause the fluorescent lamp to vibrate, and can greatly save space compared with the structure of multiple lamp tubes and curved lamp tubes.

Description

technical field [0001] The invention relates to a fluorescent lamp and a backlight module, in particular to a fluorescent lamp in which fluorescent powder is excited to emit light, and a backlight module using the fluorescent lamp as a backlight. Background technique [0002] Cold Cathode Fluorescent Lamp (Cold Cathode Fluorescent Lamp, CCFL for short) is a gas discharge lamp. [0003] Such as figure 1 As shown, it is a schematic structural diagram of a traditional CCFL. The CCFL is composed of a lamp tube 11 and a first electrode 202 and a second electrode 203 at both ends of the lamp tube 11. It contains an appropriate amount of inert gas and mercury. On the inner wall of the lamp tube 11 Coated with phosphor14. The CCFL is connected in series in the loop 16 of the power supply 15 . During operation, current is input from one electrode of the CCFL, output from the other electrode, and returns to the other electrode of the power supply 15 through the loop 16 . When high...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01J61/04H01J61/34H01J61/35
Inventor 肖向春
Owner BOE TECH GRP CO LTD
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