CN201203736Y - Liquid crystal display screen using modularization LED backlight device - Google Patents
Liquid crystal display screen using modularization LED backlight device Download PDFInfo
- Publication number
- CN201203736Y CN201203736Y CNU2008200941931U CN200820094193U CN201203736Y CN 201203736 Y CN201203736 Y CN 201203736Y CN U2008200941931 U CNU2008200941931 U CN U2008200941931U CN 200820094193 U CN200820094193 U CN 200820094193U CN 201203736 Y CN201203736 Y CN 201203736Y
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- light emitting
- backlight module
- emitting diode
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- backlight
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Abstract
The utility model relates to a liquid crystal display screen using a modularized light emitting diode backlight device, having a sized in a range of 32 inches to 47 inches; for the liquid crystal display screens having various sizes, the light emitting diode backlight device has the same quantity of a plurality of backlight modules; each backlight module is provided with the same quantity of light emitting diodes, and each backlight module is equipped with a drive circuit; each circuit is identical to compose a total drive circuit for the whole light emitting diode device. For the disadvantage in current technology using integrated design bring inconvenience for manufacture, the utility model provides a liquid crystal display screen using a modularized light emitting diode backlight device, to ensure that the drive circuit and the lamp panel circuit have completely the same mode, and the modularized structure design is very simple, with the same production tooling and technical process; the liquid crystal display screens with various sizes can be assembled on the same production line, so that it is convenient for mass production.
Description
Technical field
The utility model relates to LCDs, more particularly, relates to a kind of LCDs that adopts the modularization LED backlight device.
Background technology
Nowadays, be used for the requirement that super bright large scale environment-friendly and energy-efficient liquid crystal display screen products that the digitizing public information shows can satisfy environmental protection and energy saving and high quality graphic well.Along with the further miniaturization of electronic product, LCDs has substituted the first-selection that conventional display device becomes display device.Because LCD screen itself is not luminous, needs a backlight module that is positioned at its rear that light source is provided usually, and then realize the function of demonstration.Yet, the existing backlight module that is used to provide light source is integral design normally, the design of this form when the LCDs of assembling different size, the production of need classifying, comprise corresponding driving circuit and lamp plate circuit, be difficult to tissue production in batches like this.Therefore, it is very important designing a kind of liquid crystal display with modularization light emitting diode (Light Emitting Diode is called for short LED) backlight module.
The utility model content
The technical problems to be solved in the utility model is that the defective at the above-mentioned employing integral design of prior art is made troubles for production provides a kind of LCDs that adopts the modularization LED backlight device.
The technical scheme that its technical matters that solves the utility model adopts is: construct a kind of LCDs that adopts the modularization LED backlight device, the range of size of described LCDs is 32 inches to 47 inches, wherein:
At the described LCDs of different size, have a plurality of backlight modules of equal number in the described LED backlight device; Be equiped with the light emitting diode of equal number in each backlight module; Each backlight module disposes a driving circuit; Described each driving circuit is identical and form total driving circuit of whole LED backlight device.
In LCDs described in the utility model, light emitting diode in each described backlight module is equally divided into a plurality of unit, is connected with one of them output terminal of the driving circuit of this backlight module after each light emitting diode in each unit is connected mutually again.
In LCDs described in the utility model, each described backlight module comprises 6 light emitting diodes, and each unit has 4 light emitting diodes that mutually are connected with one of them output terminal of the driving circuit of this backlight module again after the series connection.
In LCDs described in the utility model, described driving circuit comprises that a plurality of and described backlight module is connected and the chip for driving of a plurality of output terminals and the control chip that a plurality of and described chip for driving is connected and provides a plurality of control ends be provided.
In LCDs described in the utility model, each described chip for driving has 3 output terminals that are connected to described backlight module.
In LCDs described in the utility model, each described control chip has 8 control ends that are connected to described chip for driving.
In LCDs described in the utility model, described control chip is 8 a SI PO shift register.
In LCDs described in the utility model, what described backlight module adopted is the direct-type backlight mode.
Implement the LCDs of employing modularization LED backlight device of the present utility model, has following beneficial effect: the light-emitting diode (LED) backlight module that adopts modular, all use the light emitting diode of equal number from every kind of display screen of 32 inches to 47 inches, only need correspondingly to adjust spacing between the light emitting diode according to the size of LCDs, the backlight that just can form various sizes has guaranteed that driving circuit and lamp plate circuit have identical pattern; Modular structural design is very simple, and pattern is just the same, and production frock and technological process are identical, and same production line can assemble the LCDs of different size, produces in batches thereby be easy to tissue; In addition, light-emitting diode (LED) backlight module adopts the mode backlight of straight-down negative, can effectively reduce light emitting diode quantity and guarantee the heat radiation requirement.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the structural representation of an embodiment of back lighting device of the present utility model;
Fig. 2 is the structural representation of an embodiment of backlight module of the present utility model;
Fig. 3 is the circuit theory diagrams of lamp plate circuit of the present utility model;
Fig. 4 is the circuit theory diagrams of driving circuit of the present utility model.
Embodiment
LCDs according to employing modularization LED backlight device of the present utility model, its range of size is 32 inches to 47 inches, described LCDs at different size, the a plurality of backlight modules that have equal number in the described LED backlight device, be equiped with the light emitting diode of equal number in each backlight module, and each backlight module disposes a driving circuit, and above-mentioned each driving circuit is identical and form total driving circuit of whole LED backlight device.The utility model adopts the light-emitting diode (LED) backlight module of modular, all use the light emitting diode of equal number from every kind of display screen of 32 inches to 47 inches, only need correspondingly to adjust spacing between the light emitting diode according to the size of LCDs, just can form the backlight of various sizes, thereby guarantee that driving circuit and lamp plate circuit have identical pattern.
Light-emitting diode (LED) backlight module of the present utility model adopts the direct-type backlight mode, the heat radiation requirement that can reduce light emitting diode quantity effectively and guarantee LCDs.Because general straight-down negative back light source in LED needs certain space between LED source and blooming so that the light that each pointolite is sent mixes, this make direct-light-type backlight light box thickness generally at 40mm to about the 50mm.Simultaneously, for the LCDs that guarantees different size has identical brightness, light emitting diode that can be by selecting different class for use and adjust its electric current and adjust required brightness.Simultaneously, in order to guarantee the homogeneity of LCDs brightness, can regulate the height of lamp box and realize that promptly LED backlight device is to the distance between the liquid crystal display panel.
According to LCDs of the present utility model, the light emitting diode in each backlight module is equally divided into a plurality of unit, is connected with one of them output terminal of the driving circuit of this backlight module after each light emitting diode in each unit is connected mutually again.Described driving circuit comprises that a plurality of and described backlight module is connected and the chip for driving of a plurality of output terminals and the control chip that a plurality of and described chip for driving is connected and provides a plurality of control ends be provided.
The utility model just can be assembled into various back lighting devices from 32 inches to 47 inches by the spacing between quantity, size and the light emitting diode of adjusting light-emitting diode (LED) backlight module, describes with 42 inches back lighting device below:
As shown in Figure 1, shown back lighting device comprises 16 independent backlight modules 1 with 24 light emitting diodes, each backlight module 1 all disposes corresponding driving circuit (not illustrating among the figure), is used for the brightness of the luminous of driven for emitting lights diode and control lumination of light emitting diode.Below with X represent lateral separation, Y represent fore-and-aft distance to shown in LCDs describe.Wherein, each backlight module 1 is of a size of X=223mm, Y=127mm, and the spacing between the module is X=10mm, Y=5mm, and 16 light-emitting diode (LED) backlight modules have been formed 42 inches backlight, and described backlight is of a size of X=930mm, Y=523mm.
As shown in Figure 2, shown backlight module 1 comprises 6 light emitting diodes 2 that are connected with driving circuit (not illustrating among the figure).Each light emitting diode 2 is of a size of X=39mm, Y=33mm, and the spacing of each light emitting diode 2 is X=11mm, Y=5.5mm.Wherein, each light emitting diode 2 comprises 4 light emitting diodes of series connection mutually, can not find out the annexation between the light emitting diode in Fig. 2, below will be described in the circuit theory diagrams of Fig. 3 and Fig. 4.
As shown in Figure 3, shown lamp plate circuit comprises 6 light emitting diodes that are connected with driving circuit 2, and each equal light emitting diode has the light emitting diode of 4 driving circuit controls of connecting mutually and be subjected to.These 4 light emitting diodes are connected between power supply VLED and the control signal W1-W6, and are connected to driving circuit by plug socket P1.
As shown in Figure 4, shown driving circuit comprises 8 chip for driving U1-U8 that are connected with backlight module and 3 control chip U9-U11 that are connected with described chip for driving.This driving circuit correspondence be whole 42 inches back light source in LED, i.e. 16 little light-emitting diode (LED) backlight modules.Wherein, each chip for driving has 3 output drive signals, and 8 chip for driving have 24 road output drive signal W1-W24 altogether, like this with regard to 24 light emitting diodes of may command, i.e. 96 light emitting diodes.Each control chip that is connected with above-mentioned chip for driving has 8 output control signals, 3 control chips have 24 tunnel output control signal CW1-CW24 altogether, this 24 tunnel output control signal is input to chip for driving U1-U8 simultaneously, thereby each light emitting diode is controlled, to reach required display effect.In Fig. 4, the DD313 type drive IC that chip for driving adopts, REXTB1, REXTB2 and REXTR1, REXTR2 are the outer meeting resistance input end, adjust its peripheral resistance sizes and can adjust the size of current that is used for the driven for emitting lights diode.Control chip MC74HC164ADT is 8 a serial shift register, it provides 8 the tunnel to output a control signal to above-mentioned chip for driving, corresponding 3 tunnel output control signals of each chip for driving, these output control signals provide stable electric current for the work of light emitting diode.
The utility model adopts the light-emitting diode (LED) backlight module of modular, all use the light emitting diode of equal number from every kind of display screen of 32 inches to 47 inches, only need correspondingly to adjust spacing between the light emitting diode according to the size of LCDs, just can form the back lighting device of various sizes size, thereby guarantee that driving circuit and lamp plate circuit have identical pattern.In addition, modular structural design is very simple, and pattern is just the same, and production frock and technological process are identical, and same production line can assemble the LCDs of different size, produces in batches thereby be easy to tissue.In addition, the mode backlight of backlight comprises straight-down negative and side according to formula, and light-emitting diode (LED) backlight module of the present utility model adopts the mode backlight of straight-down negative, can effectively reduce light emitting diode quantity and guarantee the heat radiation requirement.
Claims (8)
1, a kind of LCDs that adopts the modularization LED backlight device, the range of size of described LCDs be 32 inches to 47 inches, it is characterized in that,
At the described LCDs of different size, have a plurality of backlight modules of equal number in the described LED backlight device; Be equiped with the light emitting diode of equal number in each backlight module; Each backlight module disposes a driving circuit; Described each driving circuit is identical and form total driving circuit of whole LED backlight device.
2, LCDs according to claim 1, it is characterized in that, light emitting diode in each described backlight module is equally divided into a plurality of unit, is connected with one of them output terminal of the driving circuit of this backlight module after each light emitting diode in each unit is connected mutually again.
3, LCDs according to claim 2, it is characterized in that, each described backlight module comprises 6 light emitting diodes, and each unit has 4 light emitting diodes that mutually are connected with one of them output terminal of the driving circuit of this backlight module again after the series connection.
4, LCDs according to claim 1, it is characterized in that described driving circuit comprises that a plurality of and described backlight module is connected and the chip for driving of a plurality of output terminals and the control chip that a plurality of and described chip for driving is connected and provides a plurality of control ends be provided.
5, LCDs according to claim 4 is characterized in that, each described chip for driving has 3 output terminals that are connected to described backlight module.
6, LCDs according to claim 4 is characterized in that, each described control chip has 8 control ends that are connected to described chip for driving.
According to claim 4 or 6 described LCDs, it is characterized in that 7, described control chip is 8 a SI PO shift register.
8, LCDs according to claim 1 is characterized in that, what described backlight module adopted is the direct-type backlight mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200941931U CN201203736Y (en) | 2008-05-23 | 2008-05-23 | Liquid crystal display screen using modularization LED backlight device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200941931U CN201203736Y (en) | 2008-05-23 | 2008-05-23 | Liquid crystal display screen using modularization LED backlight device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201203736Y true CN201203736Y (en) | 2009-03-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200941931U Expired - Fee Related CN201203736Y (en) | 2008-05-23 | 2008-05-23 | Liquid crystal display screen using modularization LED backlight device |
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| CN (1) | CN201203736Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376214A (en) * | 2011-11-18 | 2012-03-14 | 深圳市华星光电技术有限公司 | Flat-panel display device and stereoscopic display device |
| CN102384409A (en) * | 2011-11-18 | 2012-03-21 | 深圳市华星光电技术有限公司 | Backlight system |
-
2008
- 2008-05-23 CN CNU2008200941931U patent/CN201203736Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102376214A (en) * | 2011-11-18 | 2012-03-14 | 深圳市华星光电技术有限公司 | Flat-panel display device and stereoscopic display device |
| CN102384409A (en) * | 2011-11-18 | 2012-03-21 | 深圳市华星光电技术有限公司 | Backlight system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PP01 | Preservation of patent right |
Effective date of registration: 20150129 Granted publication date: 20090304 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| PD01 | Discharge of preservation of patent |
Date of cancellation: 20150729 Granted publication date: 20090304 |
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| RINS | Preservation of patent right or utility model and its discharge | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090304 Termination date: 20150523 |
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| EXPY | Termination of patent right or utility model |