CN205592775U - Backlight module and liquid crystal display device - Google Patents
Backlight module and liquid crystal display device Download PDFInfo
- Publication number
- CN205592775U CN205592775U CN201620318280.5U CN201620318280U CN205592775U CN 205592775 U CN205592775 U CN 205592775U CN 201620318280 U CN201620318280 U CN 201620318280U CN 205592775 U CN205592775 U CN 205592775U
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- light guide
- guide plate
- backlight module
- face
- led chip
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Abstract
The utility model discloses a backlight module and liquid crystal display device, wherein, this backlight module includes that the banding light guide plate of a plurality of length reaches and the light source of light guide plate adaptation, the light guide plate has the top surface that is used for the light -emitting, the relative bottom surface that sets up with the top surface to and locate the side between top surface and the bottom surface, the side links to each other with the long side of top surface. A plurality of light guide plates parallel and the interval setting along the width direction of light guide plate, and the top surface of each light guide plate all is located the coplanar, and the bottom surface of each light guide plate all is located the coplanar. The light source is established towards the side of light guide plate. The utility model discloses easy assembly of backlight module and thickness are little.
Description
Technical field
This utility model relates to LCDs technical field, particularly to a kind of backlight module and liquid crystal indicator.
Background technology
At present in liquid crystal display, show for realizing HDR (High-Dynamic Range) high dynamic range images, one of solution having pointed out is to use the N × M block light guide plate in arranged in matrix to splice, each fritter light guide plate is lighted by a lamp bead being correspondingly arranged at the light guide plate back side, i.e. light guide plate uses direct-type backlight, when a certain region shows a certain luminance picture, only this region correspondence lamp bead electric current need to be controlled, finally realize HDR high dynamic range images and show.
But the light guide plate connection scheme of existing this backlight module can bring following problem, i.e. stitching portion can produce brightness unevenness and splice bad, and the high cost that too much caused by concatenation unit and process complexity (such as location, installation etc.).For the problem solving brightness unevenness, existing backlight module needs increase the diffuser plate being oppositely arranged with light guide plate and use de-mura (fall moire) technology, and between light guide plate and diffuser plate, must have certain coupling electrical distance, this can increase the thickness of backlight module further.
Utility model content
Main purpose of the present utility model is to provide a kind of backlight module, it is desirable to provide a kind of backlight module being easy to assemble and can reduce thickness.
For achieving the above object, the backlight module that the utility model proposes, it is applied in liquid crystal indicator, described backlight module includes multiple strip light guide plate and the light source adaptive with described light guide plate, wherein,
Described strip light guide plate includes the bottom surface being oppositely arranged for the end face going out light with described end face, and is located between described end face and bottom surface the side that long side with described end face and bottom surface respectively is connected；
Along its width, side by side and interval is installed on described liquid crystal indicator to multiple described strip light guide plates, and the end face of all strip light guide plates and bottom surface are generally aligned in the same plane respectively；
Described light source is arranged towards the side of described strip light guide plate.
Preferably, described light source and described strip light guide plate one_to_one corresponding, and all it is located at the same side of described strip light guide plate.
Preferably, described light source includes circuit board and the multiple LED chip being arranged on described circuit board；Described circuit board is strip, and its length direction is parallel with the length direction of described light guide plate.
Preferably, the plate face of described circuit board is vertical with described side, described LED chip for side entering type LED chip, the exiting surface of described LED chip is arranged towards described side.
Preferably, described LED chip is block, and the exiting surface of described LED chip is parallel with described side.
Preferably, described end face is provided with multiple fin, and the length direction of described fin is vertical with the length direction of described light guide plate.
Preferably, this backlight module also includes the diaphragm covering multiple described light guide plate, and described diaphragm is towards end face and described end face interval setting；It is provided with diffusing structure at the corresponding described light source of described diaphragm.
Preferably, described diffusing structure is silk-screen astigmatism site on described diaphragm.
This utility model also proposes a kind of liquid crystal indicator, and including backlight module, this backlight module includes multiple strip light guide plate and the light source adaptive with described light guide plate, wherein,
Described strip light guide plate includes the bottom surface being oppositely arranged for the end face going out light with described end face, and is located between described end face and bottom surface the side that long side with described end face and bottom surface respectively is connected；
Along its width, side by side and interval is installed on described liquid crystal indicator to multiple described strip light guide plates, and the end face of all strip light guide plates and bottom surface are generally aligned in the same plane respectively；
Described light source is arranged towards the side of described strip light guide plate.
Preferably, described light source and described strip light guide plate one_to_one corresponding, and all it is located at the same side of described strip light guide plate.
Preferably, described light source includes circuit board and the multiple LED chip being arranged on described circuit board；Described circuit board is strip, and its length direction is parallel with the length direction of described light guide plate.
Preferably, the plate face of described circuit board is vertical with described side, described LED chip for side entering type LED chip, the exiting surface of described LED chip is arranged towards described side.
Preferably, described LED chip is block, and the exiting surface of described LED chip is parallel with described side.
Preferably, described end face is provided with multiple fin, and the length direction of described fin is vertical with the length direction of described light guide plate.
Preferably, this backlight module also includes the diaphragm covering multiple described light guide plate, and described diaphragm is towards end face and described end face interval setting；It is provided with diffusing structure at the corresponding described light source of described diaphragm.
Preferably, described diffusing structure is silk-screen astigmatism site on described diaphragm.
Backlight module described in the utility model, by using multiple strip light guide plates arranged side by side to splice, simplifies the assembly technology of light guide plate, and it is bad to be effectively reduced splicing.Simultaneously as light source is arranged on the side of light guide plate, and the end face of light guide plate and bottom surface alignment are arranged, and thus reduce the thickness of backlight module.
Accompanying drawing explanation
In order to be illustrated more clearly that this utility model embodiment or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in describing below is only embodiments more of the present utility model, for those of ordinary skill in the art, on the premise of not paying creative work, it is also possible to obtain other accompanying drawing according to the structure shown in these accompanying drawings.
Fig. 1 is the structural representation of this utility model backlight module one embodiment；
Fig. 2 is the partial enlarged drawing in Fig. 1 at A；
Fig. 3 is the schematic front view of backlight module in Fig. 1；
Fig. 4 is the structural representation in Fig. 1 after backlight module removal diaphragm；
Fig. 5 is the partial enlarged drawing in Fig. 4 at B.
Drawing reference numeral illustrates:
| Label | Title | Label | Title | Label | Title |
| 1 | Light guide plate | 13 | Side | 3 | Diaphragm |
| 11 | End face | 2 | Light source | 31 | Diffusing structure |
| 111 | Fin | 21 | Circuit board | ||
| 12 | Bottom surface | 22 | LED chip |
The realization of this utility model purpose, functional characteristics and advantage will in conjunction with the embodiments, are described further referring to the drawings.
Detailed description of the invention
Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present utility model rather than whole embodiments.Based on the embodiment in this utility model, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into the scope of this utility model protection.
Need explanation, in this utility model embodiment, directional instruction (such as up, down, left, right, before and after ...) is only used for explanation relative position relation under a certain particular pose (as shown in drawings) between each parts, motion conditions etc., if this particular pose changes, then directionality instruction changes the most therewith.
Additionally; technical scheme between each embodiment can be combined with each other; but must be based on those of ordinary skill in the art are capable of; when technical scheme combination occur conflicting maybe cannot realize time will be understood that the combination of this technical scheme does not exists, the most not this utility model require protection domain within.
The backlight module that the utility model proposes, refer to Fig. 1 to Fig. 3, in one embodiment, this backlight module include multiple strip light guide plate 1 and with the light source 2 of light guide plate 1 adaptation, wherein,
Light guide plate 1 has the bottom surface 12 being oppositely arranged for the end face 11 going out light and end face 11, and is located at the side 13 between end face 11 and bottom surface 12, and side 13 is connected with the long side of end face 11.
Multiple light guide plates 1 side by side and are spaced setting along the width of light guide plate 1, and the end face 11 of each light guide plate 1 is respectively positioned on same plane, and the bottom surface 12 of each light guide plate 1 is respectively positioned on same plane.Light source 2 is arranged towards the side 13 of light guide plate 1.
In the present embodiment, specifically, light guide plate 1 is the rectangular slab of strip, end face 11 and the plate face that bottom surface 12 is light guide plate 1, compared to the square light guide plate 1 of existing N × M rectangular array, it is bad to there is not splicing in light guide plate 1 length direction upper, and consequent splicing shadow problem.
During installation, the bottom surface 12 of light guide plate 1 is towards the backboard of liquid crystal display, and backboard of then being fitted by light guide plate 1 is fixed.Light guide plate 1 is arranged along its width interval, can form the space installing light source 2 between two adjacent light guide plates 1.
Light source 2 is preferably by LED backlight 2, i.e. LED lamp bar.LED chip 22 in LED lamp bar individually controls, in order to feasible region intensity control.
This utility model backlight module, by using multiple strip light guide plates 1 arranged side by side to splice, simplifies the assembly technology of light guide plate 1, and it is bad to be effectively reduced splicing.Simultaneously as light source 2 is arranged on the side 13 of light guide plate 1, and the end face 11 of light guide plate 1 and bottom surface 12 alignment are arranged, and thus reduce the thickness of backlight module.
Further, a light guide plate 1 is correspondingly arranged a light source 2, and on light guide plate 1 width, each light source 2 is positioned at the same side of corresponding light guide plate 1.
In the present embodiment, the width of light guide plate 1 is divided into forward side and side dorsad, each light source 2 be respectively positioned on corresponding light guide plate 1 forward side or dorsad side, i.e. light source 2 be arranged to two light source 2 sandwiched one light guide plates 1, or between adjacent two light guide plates 1, a light source 2 is only set.So, the splicing spacing between adjacent two light guide plates 1 can be reduced.
Further, please with reference to Fig. 4 and Fig. 5, in one embodiment, light source 2 includes circuit board 21 and is arranged on multiple LED chip 22 on circuit board 21.Circuit board 21 is strip, and the length direction of circuit board 21 is parallel with the length direction of light guide plate 1.
In the present embodiment, LED chip 22 electrically connects with circuit board 21, and is independently controlled, and each LED chip 22 can form a backlight passage, and forms backlight area in corresponding light guide plate 1.During installation, circuit board 21 is fixing with the backboard of liquid crystal display or frame to be connected.Owing to multiple LED chip 22 are installed on circuit board 21, during assembling, LED chip 22 is being assembled on backboard after encapsulating with circuit board 21, and therefore, assembly technology is simpler.
Further, the plate face of circuit board 21 is vertical with side 13, LED chip 22 for side entering type LED chip 22, the exiting surface of LED chip 22 is arranged towards side 13.
In the present embodiment, circuit board 21 can be jointly mounted on the backboard of display, and backboard can provide preferable fixed platform, compares and utilizes the end face of circuit board 21 or side 13 to fix, and this mounting means is easier to ensure that the installation accuracy of circuit board 21.Preferably, LED chip 22 is block, and the exiting surface of LED chip 22 is parallel with side 13, so, it is ensured that maximum enters light quantity.
Further, end face 11 is provided with multiple fin 111, and the length direction of fin 111 is vertical with the length direction of light guide plate 1.
In the present embodiment, owing to each LED chip 22 forms backlight area on corresponding light guide plate 1, therefore, adjacent two backlight area easily produce light beam crosstalk, and the light beam along light guide plate 1 length direction crosstalk can be reflected by fin 111, i.e. play the effect receiving light, so that the picture contrast of zones of different is guaranteed.
Further, this backlight module also includes the diaphragm 3 covering multiple light guide plate 1, and diaphragm 3 is towards end face 11 and end face 11 interval setting.It is provided with diffusing structure 31 at diaphragm 3 corresponding light source 2.
In the present embodiment, owing to two adjacent light guide plates 1 exist spacing in the direction of the width, therefore, can produce at this splices shadow or the problem of brightness unevenness, but by setting up diaphragm 3, and arranging diffusing structure 31 in corresponding position, diffusing structure 31 can be multiple salient point or pit, light intensity can be carried out diffuse-reflectance compared with the light of strength by this diffusing structure 31, reaches the purpose of diaphragm 3 uniform in light emission.Preferably, diffusing structure 31 is silk-screen astigmatism site on diaphragm 3.
This utility model also proposes a kind of liquid crystal indicator, including backlight module, the concrete structure of this backlight module is with reference to above-described embodiment, owing to this liquid crystal indicator have employed whole technical schemes of above-mentioned all embodiments, the most at least having all beneficial effects that the technical scheme of above-described embodiment is brought, this is no longer going to repeat them.
The foregoing is only preferred embodiment of the present utility model; not thereby the scope of the claims of the present utility model is limited; every under inventive concept of the present utility model; utilize the equivalent structure transformation that this utility model description and accompanying drawing content are made, or directly/be indirectly used in other relevant technical fields and be included in scope of patent protection of the present utility model.
Claims (9)
1. a backlight module, is applied in liquid crystal indicator, it is characterised in that described backlight module includes multiple strip light guide plate and the light source adaptive with this strip light guide plate, wherein,
Described strip light guide plate includes the bottom surface being oppositely arranged for the end face going out light with described end face, and is located between described end face and bottom surface the side that long side with described end face and bottom surface respectively is connected；
Along its width, side by side and interval is installed on described liquid crystal indicator to multiple described strip light guide plates, and the end face of all strip light guide plates and bottom surface are generally aligned in the same plane respectively；
Described light source is arranged towards the side of described strip light guide plate.
2. backlight module as claimed in claim 1, it is characterised in that described light source and described strip light guide plate one_to_one corresponding, and all it is located at the same side of described strip light guide plate.
3. backlight module as claimed in claim 1 or 2, it is characterised in that described light source includes circuit board and the multiple LED chip being arranged on described circuit board；Described circuit board is strip, and its length direction is parallel with the length direction of described light guide plate.
4. backlight module as claimed in claim 3, it is characterised in that the plate face of described circuit board is vertical with described side, described LED chip for side entering type LED chip, the exiting surface of described LED chip is arranged towards described side.
5. backlight module as claimed in claim 4, it is characterised in that described LED chip is block, and the exiting surface of described LED chip is parallel with described side.
6. backlight module as claimed in claim 3, it is characterised in that described end face is provided with multiple fin, and the length direction of described fin is vertical with the length direction of described light guide plate.
7. backlight module as claimed in claim 1 or 2, it is characterised in that also include the diaphragm covering multiple described light guide plate, described diaphragm is towards end face and described end face interval setting；It is provided with diffusing structure at the corresponding described light source of described diaphragm.
8. backlight module as claimed in claim 7, it is characterised in that described diffusing structure is silk-screen astigmatism site on described diaphragm.
9. a liquid crystal indicator, it is characterised in that include the backlight module as described in any one in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620318280.5U CN205592775U (en) | 2016-04-15 | 2016-04-15 | Backlight module and liquid crystal display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620318280.5U CN205592775U (en) | 2016-04-15 | 2016-04-15 | Backlight module and liquid crystal display device |
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| Publication Number | Publication Date |
|---|---|
| CN205592775U true CN205592775U (en) | 2016-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620318280.5U Expired - Fee Related CN205592775U (en) | 2016-04-15 | 2016-04-15 | Backlight module and liquid crystal display device |
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| Country | Link |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102396A (en) * | 2017-05-03 | 2017-08-29 | 武汉华星光电技术有限公司 | A kind of backlight module of light guide plate and the application light guide plate |
| US10359557B2 (en) | 2017-05-03 | 2019-07-23 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Light guide plate having periodic microstructure configured on light emission surface and a light waveguide layer configured within transmission layer and backlight module having a collimation structure configured with a plurality of collimation-layer units and a plurality of collimation-optical-lens units to collimate light beams emitted from the light emission surface of the light guide plate |
| CN110824765A (en) * | 2019-10-08 | 2020-02-21 | 南京熊猫电子股份有限公司 | Backlight layout method of LCD display module |
| CN112462465A (en) * | 2020-11-24 | 2021-03-09 | 常熟理工学院 | Light guide plate with embedded light source and application thereof |
-
2016
- 2016-04-15 CN CN201620318280.5U patent/CN205592775U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107102396A (en) * | 2017-05-03 | 2017-08-29 | 武汉华星光电技术有限公司 | A kind of backlight module of light guide plate and the application light guide plate |
| WO2018201536A1 (en) * | 2017-05-03 | 2018-11-08 | 武汉华星光电技术有限公司 | Light guide plate and backlight module |
| CN107102396B (en) * | 2017-05-03 | 2019-06-11 | 武汉华星光电技术有限公司 | A kind of light guide plate and the backlight module using the light guide plate |
| US10359557B2 (en) | 2017-05-03 | 2019-07-23 | Wuhan China Star Optoelectronics Technology Co., Ltd. | Light guide plate having periodic microstructure configured on light emission surface and a light waveguide layer configured within transmission layer and backlight module having a collimation structure configured with a plurality of collimation-layer units and a plurality of collimation-optical-lens units to collimate light beams emitted from the light emission surface of the light guide plate |
| CN110824765A (en) * | 2019-10-08 | 2020-02-21 | 南京熊猫电子股份有限公司 | Backlight layout method of LCD display module |
| CN112462465A (en) * | 2020-11-24 | 2021-03-09 | 常熟理工学院 | Light guide plate with embedded light source and application thereof |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160921 Termination date: 20210415 |
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| CF01 | Termination of patent right due to non-payment of annual fee |