CN2784968Y

CN2784968Y - Back light module

Info

Publication number: CN2784968Y
Application number: CN 200520056695
Authority: CN
Inventors: 章绍汉
Original assignee: Innolux Shenzhen Co Ltd; Innolux Display Corp
Current assignee: Innolux Shenzhen Co Ltd; Innolux Corp
Priority date: 2005-04-03
Filing date: 2005-04-03
Publication date: 2006-05-31
Anticipated expiration: 2015-04-03

Abstract

The utility model relates to a backlight module set which aims as solving the problem that the thickness of the whole body of the existing backlight module set is larger due to transformer coils. The backlight module set comprises a plurality of lamp tubes, a first circuit board and a plurality of transformer coils, wherein each lamp tube comprises both ends and each end comprises a lamp tube electrode. The first circuit board is arranged at one side of a plurality of lamp tube electrode, each lamp tube electrode is electrically connected to the first circuit board and a plurality of transformer coils are arranged at one side of a plurality of lamp tube electrodes and are fixed on the first circuit board. In addition, the transformer coils are matched with the first circuit board in order to generate voltage for driving a plurality of lamp tubes. The thickness of the backlight module set of the utility model is smaller, and the structure is simple.

Description

Module backlight

[technical field]

The utility model relates to a kind of module backlight, refers to a kind of backlight liquid crystal display module that is used for especially.

[background technology]

Because advantages such as the liquid crystal display utensil is light, thin, power consumption is little are widely used in modernized information equipments such as TV, notebook, computing machine, mobile phone, personal digital assistant.Because liquid crystal itself does not have the characteristics of luminescence, need provide module backlight to realize Presentation Function for it.

A kind of module backlight of prior art can be consulted Fig. 1, and this module 100 backlight comprises a plurality of fluorescent tubes 101, a plurality of transformer coil 102, a circuit board 103, two bracing frames 104, a reflecting plate 105, many connecting lines 106.Wherein these two bracing frames 104 are positioned at the side of these a plurality of fluorescent tubes 101, and will these a plurality of fluorescent tubes 101 be fixed in the top of this reflecting plate 105.This circuit board 103 is positioned at the below of this reflecting plate 105.These a plurality of transformer coils 102 are positioned at the below of this circuit board 103.The high drive end that these many connecting lines 106 are used to be electrically connected on this circuit board 103 arrives these a plurality of fluorescent tubes 101.

Because the below that the circuit board 103 in this module 100 backlight and a plurality of transformer coil 102 are positioned at this reflecting plate 105 successively, and the volume of this transformer coil 102 is bigger, it causes the integral thickness of this module 100 backlight bigger, can not adapt to the demand that module backlight is tending towards slimming.

[utility model content]

Because foregoing provides a kind of module backlight of thinner thickness real in necessary.

Disclosed module backlight comprises a plurality of fluorescent tubes, a plurality of transformer coil and a first circuit board in one better embodiment, and wherein each fluorescent tube comprises two ends, and each end comprises a lamp tube electrode; This first circuit board is positioned at a side of these a plurality of lamp tube electrodes, each lamp tube electrode is electrically connected to this circuit board, these a plurality of transformer coils are positioned at a side of these a plurality of lamp tube electrodes, and are fixed on this first circuit board, and it cooperates this first circuit board to produce the voltage that drives these a plurality of fluorescent tubes.

Compared to prior art, in this better embodiment the first circuit board of module backlight and this a plurality of transformer coils side of all being positioned at these a plurality of lamp tube electrodes, so the thickness of this module backlight is thinner than prior art.

[description of drawings]

Fig. 1 is a kind of synoptic diagram of module backlight of prior art.

Fig. 2 is the schematic top plan view of the disclosed a kind of module backlight of the utility model first embodiment.

Fig. 3 is the schematic top plan view of the disclosed a kind of module backlight of the utility model second embodiment.

Fig. 4 is the schematic side view of the disclosed a kind of module backlight of the utility model the 3rd embodiment.

[embodiment]

Seeing also Fig. 2, is the schematic top plan view of the disclosed a kind of module backlight of the utility model first embodiment.This module 200 backlight comprises a plurality of U type fluorescent tubes 201, a plurality of transformer coil 202 and a first circuit board 203.Each U type fluorescent tube 201 comprises two ends, and each end comprises a lamp tube electrode 211.This first circuit board 203 is positioned at a side of these a plurality of lamp tube electrodes 211, and each lamp tube electrode 211 is electrically connected to this circuit board 203.These a plurality of transformer coils 202 are positioned at a side of these a plurality of lamp tube electrodes 211, and are fixed on this first circuit board 203, and it cooperates this first circuit board 203 to produce the voltage that drives these a plurality of fluorescent tubes 201.Wherein these a plurality of fluorescent tubes 201 are cold cathode ray tube or fluorescent tube, and this lamp tube electrode 211 can also comprise an insulating sleeve, and being electrically connected between this lamp tube electrode 211 and this circuit board 203 can be direct welding, also can be fixingly earlier to connect by lead then.

Seeing also Fig. 3, is the schematic top plan view of the disclosed a kind of module backlight of the utility model second embodiment.This module 300 backlight comprises a plurality of straight light tubes 301, a plurality of transformer coil 302, a first circuit board 303 and a second circuit board 304.Each straight light tube 301 comprises two ends, and each end comprises a lamp tube electrode 311.This first, second circuit board 303,304 lays respectively at the two ends of these a plurality of fluorescent tubes 301, fixes and be electrically connected to this each lamp tube electrode 311.Usually, the electrical connection between this first, second circuit board 303,304 is to realize by lead.These a plurality of transformer coils 302 are fixed on this first circuit board 303, and cooperate this first circuit board 303 to produce the voltage that drives these a plurality of fluorescent tubes.

Seeing also Fig. 4, is the schematic side view of the disclosed a kind of module backlight of the utility model the 3rd embodiment.This module 400 backlight comprises a plurality of straight light tubes 401, a plurality of transformer coil 402, a first circuit board 403, a second circuit board 404 and a base plate 405.Each straight light tube 401 comprises two ends, and each end comprises a lamp tube electrode 411.This first, second circuit board 403,404 lays respectively at the two ends of these a plurality of fluorescent tubes 401, fixes and be electrically connected to each lamp tube electrode 411.These a plurality of transformer coils 402 are fixed on this first circuit board 403, and cooperate this first circuit board 403 to produce the voltage that is used to drive these a plurality of fluorescent tubes 401.The below that this base plate 405 is positioned at these a plurality of fluorescent tubes 401 is used for fixing this a plurality of fluorescent tubes 401 and first, second circuit board 403,404.Usually, electrical connection between this first, second circuit board 403,404 is to realize by lead, for simplifying being electrically connected between this first circuit board 403 and this second circuit board 404, this base plate 405 also can be a circuit board, to omit the connection lead between this first, second circuit board 403,404; For improving the light utilization efficiency of this module 400 backlight, this first circuit board 403, second circuit board 404 and the one side of base plate 405 relative these a plurality of fluorescent tubes 401 all can be coated the material of energy reflection ray in addition; Can certainly increase the reflector plate that a slice is positioned at these a plurality of fluorescent tubes 401 belows and improve light utilization efficiency.

For the further thickness of control the utility model module backlight, it is better that the height of this circuit board and these a plurality of transformers or the height of its combination all are not more than the integral thickness of this module backlight.Usually, above-mentioned first circuit board 203,303,403 comprises that also one connects outside galvanic power source supply end.

In addition, as variation, these a plurality of transformer coils in this second and the 4th embodiment also can be individually fixed on this first, second circuit board, and cooperate this first circuit board and this second circuit board to produce the voltage that drives these a plurality of fluorescent tubes.

Compared to prior art, the circuit board of the utility model module backlight and a plurality of transformer coil all are positioned at a side of these a plurality of lamp tube electrodes, and therefore the thickness of module backlight of the present utility model will approach than prior art.

Claims

1. one kind is used for the backlight liquid crystal display module, comprise a plurality of fluorescent tubes, a first circuit board and a plurality of transformer coil, wherein each fluorescent tube comprises two ends, each end comprises a lamp tube electrode, it is characterized in that: this first circuit board is positioned at a side of these a plurality of lamp tube electrodes, and each electrode is electrically connected to this first circuit board, and these a plurality of transformer coils are positioned at a side of these a plurality of lamp tube electrodes, and be fixed on this first circuit board, it cooperates this first circuit board to produce the voltage that drives these a plurality of fluorescent tubes.

2. module backlight as claimed in claim 1 is characterized in that: this fluorescent tube is a U type fluorescent tube, and each lamp tube electrode is fixed on this first circuit board.

3. module backlight as claimed in claim 2 is characterized in that: the height of this first circuit board and this transformer coil is all less than the thickness of this module backlight.

4. module backlight as claimed in claim 2 is characterized in that: further comprise the base plate of fixing this first circuit board, this base plate is positioned at this a plurality of fluorescent tubes below.

5. module backlight as claimed in claim 4 is characterized in that: this base plate and first circuit board and this a plurality of fluorescent tube facing surfaces all are provided with reflecting material.

6. module backlight as claimed in claim 4 is characterized in that: further comprise a reflecting plate, this reflecting plate is between these a plurality of fluorescent tubes and this base plate.

7. module backlight as claimed in claim 1 is characterized in that: further comprise a second circuit board, wherein this fluorescent tube is a straight light tube, and two lamp tube electrodes of each fluorescent tube are separately fixed on this first, second circuit board.

8. module backlight as claimed in claim 7 is characterized in that: the height of this first, second circuit board is all less than the thickness of this module backlight.

9. module backlight as claimed in claim 7 is characterized in that: these a plurality of transformer coils also can be individually fixed on this first, second circuit board.

10. module backlight as claimed in claim 7 is characterized in that: further comprise a lead, this lead is used to be electrically connected this first circuit board and this second circuit board.

11. module backlight as claimed in claim 7 is characterized in that: further comprise the base plate of fixing this first, second circuit board, this negative is positioned at this a plurality of fluorescent tubes below.

12. module backlight as claimed in claim 11 is characterized in that: this base plate is a circuit board, and it is electrically connected this first circuit board and this second circuit board.

13. module backlight as claimed in claim 11 is characterized in that: this base plate, first circuit board and second circuit board all be provided with reflecting material with these a plurality of fluorescent tube facing surfaces.

14. module backlight as claimed in claim 11 is characterized in that: further comprise a reflecting plate, this reflecting plate is between these a plurality of fluorescent tubes and this base plate.

15. module backlight as claimed in claim 1 is characterized in that: further comprise a plurality of insulating sleeves, these a plurality of insulating sleeves coat each lamp tube electrode.

16. module backlight as claimed in claim 1 is characterized in that: comprise that further one connects outside galvanic power source supply end.