CN201032508Y - Multi-strip lamp backlight module unit - Google Patents
Multi-strip lamp backlight module unit Download PDFInfo
- Publication number
- CN201032508Y CN201032508Y CNU2006201646426U CN200620164642U CN201032508Y CN 201032508 Y CN201032508 Y CN 201032508Y CN U2006201646426 U CNU2006201646426 U CN U2006201646426U CN 200620164642 U CN200620164642 U CN 200620164642U CN 201032508 Y CN201032508 Y CN 201032508Y
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- Prior art keywords
- circuit board
- cold cathode
- capacitor
- display panels
- driving transformer
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Abstract
The utility model discloses a back light module with multiple lamp tubes. Capacitors are integrated on a circuit board, and the circuit board is arranged on a liquid crystal display panel. The back light module comprises a drive unit and a back light unit, wherein, a drive transformer is arranged on the drive unit, and the drive transformer provides two output ends; the back light unit comprises the circuit board and at least a cold cathode lamp tube, wherein, the circuit board is arranged on the liquid crystal display panel, and at least a capacitor is arranged on the circuit board, one end of the capacitor is connected on the other output end of the drive transformer together; at least one cold cathode lamp tube is arranged on the back face of the liquid crystal display panel, one end of the cold cathode lamp tube is connected on the other output end of the drive transformer, and the other end of the cold cathode lamp tube is connected on the other end of the capacitor.
Description
Technical field
The utility model relates to a kind of many fluorescent tubes module backlight, relates in particular to a kind ofly to utilize use that reduces electronic component and the design of simplifying circuit, and reaches the many fluorescent tubes module backlight that reduces cost and have the better electrical mobile equilibrium.
Background technology
General liquid crystal indicator mainly comprises a display panels and a module backlight, and module wherein backlight is broadly divided into Staight downward type backlight module and side light type backlight module.
No matter the module backlight that is which kind of type all need drive luminescence unit in the module backlight by at least one drive circuit board, at present Chang Zuowei luminescence unit be cold cathode fluorescent lamp (CCFL), and what be used for the driven for emitting lights unit is the high-voltage driven signal that drive circuit board provides.
With reference to figure 1, be existing modular circuit synoptic diagram backlight.Existing module backlight 1 uses a plurality of driving transformer T1-TN in 1 pair 1 mode, provides high-voltage driven signal to cold cathode fluorescent lamp L1-LN by capacitor C1-CN respectively, and then drives cold cathode fluorescent lamp L1-LN.Please in conjunction with Fig. 1, with reference to figure 2, for the circuit of Fig. 1 is provided with synoptic diagram.These driving transformers T1-TN is arranged on the control circuit board 10, all has two output terminals, and the one output terminal is connected in the reference edge in the control circuit board 10 jointly, and the other end then connects the capacitor C1-CN that is arranged on the control circuit board 10 respectively.In the circuit unit configuration of reality, a plurality of splicing ears 12 need be set, on the control circuit board 10 with linkage interface as control circuit board 10 and cold cathode fluorescent lamp L1-LN.At this moment, the high-voltage driven signal of control circuit board 10 output can be sent to cold cathode fluorescent lamp L1-LN and driven by splicing ear 12.
In addition, as shown in Figure 2, when module backlight 1 assembling, must be connected with connecting line 14 by high voltage bearing splicing ear 12 between control circuit board 10 and the cold cathode fluorescent lamp L1-LN, so must be by manpower when assembling, that is to say can't automated production.And splicing ear 12 must be high pressure resistant material with connecting line 14, therefore must the cost higher cost.
With reference to figure 3, be existing another modular circuit synoptic diagram backlight.Existing module backlight 2 uses a driving transformer Tr in the mode more than 1 pair, provides high-voltage driven signal to cold cathode fluorescent lamp L1-LN by balance winding L X1-LXN respectively, and then drives cold cathode fluorescent lamp L1-LN.In conjunction with Fig. 3, with reference to figure 4, for the circuit of Fig. 3 is provided with synoptic diagram.In Fig. 4, driving transformer Tr1, Tr2 are arranged on the control circuit board 20, driving transformer Tr1, Tr2 all have two output terminals, the one output terminal is connected in the reference edge in the control circuit board 20 jointly, and the other end then connects the balance winding L X1-LXN that is arranged on the control circuit board 20 respectively.In the circuit unit configuration of reality, a plurality of splicing ears 22 need be set, on the control circuit board 20 with linkage interface as control circuit board 20 and cold cathode fluorescent lamp L1-LN.At this moment, the high-voltage driven signal of control circuit board 20 output can be sent to cold cathode fluorescent lamp L1-LN and driven by splicing ear 22.
In addition, as shown in Figure 4, when module backlight 2 assemblings, must be connected with connecting line 24 by high voltage bearing splicing ear 22 between control circuit board 20 and the cold cathode fluorescent lamp L1-LN, so must be by manpower when assembling, that is to say can't automated production.And splicing ear 22 must be high pressure resistant material with connecting line 24, therefore must the cost higher cost.
The utility model content
Therefore, the utility model provides a kind of many fluorescent tubes module backlight, capacitor is incorporated on the circuit board independently, and this circuit board is arranged on the display panels.The design that the configuration mode of sort circuit element can reduce the use of elements such as balance winding, splicing ear, connecting line and simplify circuit reduces cost and has acceptable current balance type degree and reach.
Many fluorescent tubes module backlight of the utility model first embodiment is applicable to a display panels, and this module backlight comprises: a control circuit board, a transformer, a circuit board and at least one cold cathode fluorescent lamp.This transformer is arranged on this control circuit board, and the secondary side of this transformer has one first link and one second link.This circuit board is provided with at least one capacitor, and this circuit board is arranged on this display panels, and an end of these capacitors is connected in this first link of the secondary side of this transformer jointly.These cold cathode fluorescent lamp are arranged at the back side of this display panels, each cold cathode fluorescent lamp all has one first conducting end and one second conducting end, wherein, these first conducting end are connected to the other end of these capacitors, and these second conducting end are connected in this second link of the secondary side of this transformer jointly.
Many fluorescent tubes module backlight of the utility model second embodiment is applicable to a display panels, and this module backlight comprises: a control circuit board, a transformer, a first circuit board, a second circuit board and at least one cold cathode fluorescent lamp.This transformer is arranged on this control circuit board, and the secondary side of this transformer has one first link and one second link.This first circuit board is provided with at least one first capacitor, and this first circuit board is arranged on this display panels, and an end of these first capacitors is connected in this first link of the secondary side of this transformer jointly.This second circuit board is provided with at least one second capacitor, and this second circuit board is arranged on this display panels, and an end of these second capacitors is connected in this second link of the secondary side of this transformer jointly.These cold cathode fluorescent lamp are arranged at the back side of this display panels, each cold cathode fluorescent lamp all has one first conducting end and one second conducting end, wherein, these first conducting end are connected to the other end of these first capacitors, and these second conducting end are connected to the other end of these second capacitors.
Above general introduction and ensuing detailed description are all exemplary, are in order to further specify claim of the present utility model.And about other purpose of the present utility model and advantage, will in follow-up explanation and accompanying drawing, be set forth.
Description of drawings
Fig. 1 is existing modular circuit synoptic diagram backlight;
Fig. 2 is provided with synoptic diagram for the circuit of Fig. 1;
Fig. 3 is existing another modular circuit synoptic diagram backlight;
Fig. 4 is provided with synoptic diagram for the circuit of Fig. 3;
Fig. 5 is the modular circuit synoptic diagram backlight of the utility model first embodiment;
Fig. 6 is provided with synoptic diagram for the circuit of Fig. 5;
Fig. 7 is the modular circuit synoptic diagram backlight of the utility model second embodiment; And
Fig. 8 is provided with synoptic diagram for the circuit of Fig. 7.
Existing:
1,2 module T1-TN backlight, Tr, Tr1, Tr2 driving transformer
C1-CN capacitor L1-LN cold cathode fluorescent lamp
10,20 control circuit boards, 12,22 splicing ears
14,24 connecting line LX1-LXN balance windings
The utility model:
3,4 module C1-CN backlight, C11-C1N, high-voltage capacitance
C21-C2N
T, Tm driving transformer L1-LN cold cathode fluorescent lamp
30,40 driver elements, 32,42 back light units
300,400 control circuit boards, 320,420,422 circuit boards
The T11 first link T12 second link
The LC1 first conducting end LC2 second conducting end
Embodiment
Fig. 5 is the modular circuit synoptic diagram backlight of the utility model first embodiment.Module backlight 3 of the present utility model uses a driving transformer T in the mode more than 1 pair, provide high-voltage driven signal to cold cathode fluorescent lamp L1-LN by high-voltage capacitance C1-CN respectively, and then driving cold cathode fluorescent lamp L1-LN, this module 3 backlight is applicable to a display panels (not shown).
In conjunction with Fig. 5, with reference to figure 6, for the circuit of Fig. 5 is provided with synoptic diagram.In Fig. 6, module 3 backlight of the present utility model has comprised driver element 30 and back light unit 32, and driver element 30 comprises a control circuit board 300 and a driving transformer T, and back light unit 32 comprises a circuit board 320 and at least one cold cathode fluorescent lamp L1-LN.This driving transformer T is arranged on this control circuit board 300, and the secondary side of this driving transformer T has one first link T11 and one second link T12.This circuit board 320 is provided with at least one capacitor C1-CN, and this circuit board 320 is arranged on this display panels (not shown), and the end of these capacitors C1-CN is connected in this first link T11 of the secondary side of this driving transformer T jointly.These cold cathode fluorescent lamp L1-LN is arranged at the back side of this display panels, each cold cathode fluorescent lamp all has one first conducting end LC1 and one second conducting end LC2, wherein, these first conducting end LC1 is connected to the other end of these capacitors C1-CN, and these second conducting end LC2 is connected in this second link T12 of the secondary side of this driving transformer T jointly.
With reference to figure 6, in the driver element 30 of module 3 backlight, driving transformer T is arranged on the control circuit board 300 again, and two output link T11, T12 are provided on control circuit board 300, to export high-voltage driven signal to back light unit 32.In back light unit 32, the circuit board 320 that is provided with capacitor C1-CN is positioned on the display panels (not shown), the end of these capacitors C1-CN is connected in this first link T11 of the secondary side of this driving transformer T jointly, and the first conducting end LC1 that is arranged at these cold cathode fluorescent lamp L1-LN at this display panels back side then is connected to the other end of capacitor C1-CN.The second conducting end LC2 of these cold cathode fluorescent lamp L1-LN then is connected in this second link T12 of the secondary side of this driving transformer T jointly.
Again with reference to figure 6, the module backlight 3 of the utility model first embodiment, in the configuration of the circuit component of reality, driver element 30 only provides the first link T11 and the second link T12 to be connected in the back light unit 32 the connecing altogether of end a and cold cathode fluorescent lamp L1-LN that connect altogether of circuit board 320 and holds b.
Therefore, when the module 3 backlight of assembling the utility model first embodiment, only need be connected two high-voltage conducting wires between driver element 30 and the back light unit 32 and promptly can finish assembling, and the waste of having saved manpower.Simultaneously, because driver element 30 only connects with two leads and back light unit 32, therefore the module backlight 3 of the utility model first embodiment just need not extra a plurality of high voltage bearing splicing ears and connecting line, and the cost of having saved these assemblies, and then reduce manufacturing cost.
In addition, because the module backlight 3 of the utility model first embodiment is serially connected with the capacitor C1-CN of high pressure at the end of each cold cathode fluorescent lamp L1-LN, therefore, the working current that flows through each cold cathode fluorescent lamp L1-LN can reach balance along with identical high-voltage capacitance value, and need not to be provided with extra balance winding in driver element 30, can save the cost of balance winding equally, and reduce manufacturing cost.
Please refer to Fig. 7, be the modular circuit synoptic diagram backlight of the utility model second embodiment.Module backlight 4 of the present utility model uses a driving transformer Tm in the mode more than 1 pair, provide two high-voltage driven signals to cold cathode fluorescent lamp L1-LN by high-voltage capacitance C11-C1N, C21-C2N respectively, and then driving cold cathode fluorescent lamp L1-LN, this module 4 backlight is applicable to a display panels (not shown).
In conjunction with Fig. 7, with reference to figure 8, for the circuit of Fig. 7 is provided with synoptic diagram.In Fig. 8, module backlight 4 of the present utility model has comprised driver element 40 and back light unit 42, driver element 40 comprises a control circuit board 400 and a driving transformer Tm, and back light unit 42 comprises a first circuit board 420, a second circuit board 422 and at least one cold cathode fluorescent lamp L1-LN.This driving transformer Tm is arranged on this control circuit board 400, and the secondary side of this driving transformer Tm has one first link T11 and one second link T12.This first circuit board 420 is provided with at least one first capacitor C11-C1N, this first circuit board 420 is arranged on this display panels, and the end of these first capacitors C11-C1N is connected in this first link T11 of the secondary side of this driving transformer Tm jointly.This second circuit board 422 is provided with at least one second capacitor C21-C2N, this second circuit board 422 is arranged on this display panels, and the end of these second capacitors C21-C2N is connected in this second link T12 of the secondary side of this driving transformer Tm jointly.These cold cathode fluorescent lamp L1-LN is arranged at the back side of this display panels, each cold cathode fluorescent lamp all has one first conducting end LC1 and one second conducting end LC2, wherein, these first conducting end LC1 is connected to the other end of these first capacitors C11-C1N, and these second conducting end LC2 is connected to the other end of these second capacitors C21-C2N.
Again with reference to figure 8, the module backlight 4 of the utility model second embodiment, in the configuration of the circuit component of reality, driver element 40 only provides the first link T11 and the second link T12 to be connected in the back light unit 42 the connecing altogether of end a and second circuit board 422 that connect altogether of first circuit board 420 and holds b.
Therefore, when the module 4 backlight of assembling the utility model second embodiment, only need be connected two high-voltage conducting wires between driver element 40 and the back light unit 42 and promptly can finish assembling, and the waste of having saved manpower.Simultaneously, because driver element 40 only connects with two leads and back light unit 42, therefore the module backlight 4 of the utility model second embodiment just need not extra a plurality of high voltage bearing splicing ears and connecting line, and the cost of having saved these assemblies, and then reduce manufacturing cost.
In addition, because the two ends that the module backlight 4 of the utility model second embodiment is serially connected with each cold cathode fluorescent lamp L1-LN with the first capacitor C11-C1N and the second capacitor C21-C2N of high pressure, therefore, the working current that flows through each cold cathode fluorescent lamp L1-LN can reach balance along with identical high-voltage capacitance value, and need not to be provided with extra balance winding in driver element 40, can save the cost of balance winding equally, and reduce manufacturing cost.
The above, only be the detailed description and the accompanying drawing of the specific embodiment of one of the utility model the best, anyly be familiar with the person skilled in art in field of the present utility model, the variation that can expect easily or modify all can be encompassed in the claim of the present utility model.
Claims (8)
1. the module backlight of fluorescent tube more than a kind is applicable to a display panels, it is characterized in that, this module backlight comprises:
One control circuit board;
One driving transformer has a secondary side, and this driving transformer is arranged on this control circuit board, and the secondary side of this driving transformer has one first link and one second link;
One circuit board, it is provided with at least one capacitor, and this circuit board is arranged on this display panels, and an end of these capacitors is connected in this first link of the secondary side of this driving transformer jointly; And
At least one cold cathode fluorescent lamp, be arranged at the back side of this display panels, each cold cathode fluorescent lamp all has one first conducting end and one second conducting end, wherein, these first conducting end are connected to the other end of these capacitors, and these second conducting end are connected in this second link of the secondary side of this driving transformer jointly.
2. many fluorescent tubes as claimed in claim 1 module backlight is characterized in that this capacitor is a high-voltage capacitor.
3. the module backlight of fluorescent tube more than a kind is applicable to a display panels, it is characterized in that, this module backlight comprises:
One control circuit board;
One driving transformer has a secondary side, and this driving transformer is arranged on this control circuit board, and the secondary side of this driving transformer has one first link and one second link;
One first circuit board, it is provided with at least one first capacitor, and this first circuit board is arranged on this display panels, and an end of these first capacitors is connected in this first link of the secondary side of this driving transformer jointly;
One second circuit board, it is provided with at least one second capacitor, and this second circuit board is arranged on this display panels, and an end of these second capacitors is connected in this second link of the secondary side of this driving transformer jointly; And
At least one cold cathode fluorescent lamp, be arranged at the back side of this display panels, each cold cathode fluorescent lamp all has one first conducting end and one second conducting end, wherein, these first conducting end are connected to the other end of these first capacitors, and these second conducting end are connected to the other end of these second capacitors.
4. many fluorescent tubes as claimed in claim 3 module backlight is characterized in that this capacitor is a high-voltage capacitor.
5. the module backlight of fluorescent tube more than a kind is applicable to a display panels, it is characterized in that, this module backlight comprises:
One driver element, it is provided with a driving transformer, and this driving transformer provides two output terminals;
One back light unit comprises:
One circuit board is arranged on this display panels, and this circuit board is provided with at least one capacitor, and an end of these capacitors is connected in an output terminal of this driving transformer jointly; And
At least one cold cathode fluorescent lamp is arranged at the back side of this display panels, and an end of these cold cathode fluorescent lamp is connected in another output terminal of this driving transformer jointly, and the other end of these cold cathode fluorescent lamp is connected to the other end of these electric capacity.
6. many fluorescent tubes as claimed in claim 5 module backlight is characterized in that this capacitor is a high-voltage capacitor.
7. the module backlight of fluorescent tube more than a kind is applicable to a display panels, it is characterized in that, this module backlight comprises:
One driver element, it is provided with a driving transformer, and this transformer provides two output terminals;
One back light unit comprises:
At least one cold cathode fluorescent lamp is arranged at the back side of this display panels;
And
Two circuit boards, be arranged at respectively on this display panels, this two circuit board is provided with at least one capacitor, one end of these capacitors on this two circuit board is connected to two output terminals of this driving transformer, and the other end of these capacitors on this two circuit board is connected to these cold cathode fluorescent lamp.
8. many fluorescent tubes as claimed in claim 7 module backlight is characterized in that this capacitor is a high-voltage capacitor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201646426U CN201032508Y (en) | 2006-12-18 | 2006-12-18 | Multi-strip lamp backlight module unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201646426U CN201032508Y (en) | 2006-12-18 | 2006-12-18 | Multi-strip lamp backlight module unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201032508Y true CN201032508Y (en) | 2008-03-05 |
Family
ID=39164398
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201646426U Expired - Fee Related CN201032508Y (en) | 2006-12-18 | 2006-12-18 | Multi-strip lamp backlight module unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201032508Y (en) |
-
2006
- 2006-12-18 CN CNU2006201646426U patent/CN201032508Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080305 Termination date: 20101218 |