CN203907382U - Backlight module and display device - Google Patents
Backlight module and display device Download PDFInfo
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- CN203907382U CN203907382U CN201420325598.7U CN201420325598U CN203907382U CN 203907382 U CN203907382 U CN 203907382U CN 201420325598 U CN201420325598 U CN 201420325598U CN 203907382 U CN203907382 U CN 203907382U
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- backlight module
- diffuser plate
- light
- ink layer
- supply apparatus
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Abstract
The utility model discloses a backlight module and a display device. The backlight module comprises a diffusion plate and a light source device arranged on one side of the back surface of the diffusion plate. A reflective ink layer is arranged on the back surface of the diffusion plate and used for reflecting light emitted by the light source device to the diffusion plate. The display device comprises the backlight module. According to the technical scheme, the diffusion plate with the back surface coated with reflective ink is adopted to adjust the light output uniformity of the backlight module and replaces a light guide plate, so that the production cost and the weight of the backlight module are reduced compared with that of a side input type backlight module, and the thickness of the backlight module is reduced compared with that of a direct type backlight module.
Description
Technical field
The utility model relates to Display Technique field, particularly relates to a kind of backlight module and display unit.
Background technology
Backlight module is one of significant components of liquid crystal display, and because liquid crystal itself is not luminous, the function of backlight module is exactly well-off brightness and the light source being evenly distributed, and makes normally show image of liquid crystal display.At present, it is ripe that the Display Technique of liquid crystal display has been tending towards, and especially also has a great development at the design aspect of backlight module.Backlight module, except being applied in the liquid crystal indicator such as liquid crystal display, liquid crystal TV set, can also provide light source for display unit such as DPF, Electronic Paper, mobile phones.
Backlight module is divided into side-light backlight module and down straight aphototropism mode set according to the position difference of light source.
Backlight module is taking side incident type as main for small size (55inch is following), and large scale (more than 55inch) backlight module is taking straight-down negative as main.Side-light backlight module mainly comprises light source, LGP, heat-conducting plate and backboard.LGP major function is to convert the spot light of incident to area source by light scattering principle.Light source is positioned at a side or the two relative side of LGP, and the light that light source sends, to the conduction of the LGP other end, then penetrates by LGP is positive.Down straight aphototropism mode set mainly comprises light source, diffuser plate, diaphragm, glue frame and backboard etc., and in order to prevent lamp shadow mura, light source needs certain light mixing distance to diffuser plate, thereby the thickness of down straight aphototropism mode set is increased.
At present, in large scale side entrance back module, LGP is in 15% left and right that accounts for backlight module cost, LGP is set has taken the production cost of backlight module.And in down straight aphototropism mode set, needing enough light mixing distance to prevent the appearance of lamp shadow mura, this increases the thickness of backlight module.
Utility model content
The purpose of this utility model is to provide backlight module and the display unit that the relative down straight aphototropism mode set of a kind of thickness is less and production cost significantly reduces with respect to side injection type backlight module.
Backlight module of the present utility model, comprises diffuser plate and is arranged at the light supply apparatus of the back side one side of described diffuser plate, the back side of described diffuser plate is provided with reflectance ink layer, for the extremely described diffuser plate of light reflection that described light supply apparatus is sent.
Backlight module of the present utility model, wherein, also comprise the reflector plate of the back side one side that is arranged at described diffuser plate, described light supply apparatus is arranged between described reflector plate and described diffuser plate, the light reflection extremely described reflectance ink layer of described reflector plate for described light supply apparatus is sent.
Backlight module of the present utility model, wherein, described diffuser plate comprises first side and the Second Edge relative with described first side, described light supply apparatus comprises first light source relative with the first side of described diffuser plate, and the reflectance ink density of described reflectance ink layer is successively decreased to described Second Edge by described first side.
Backlight module of the present utility model, wherein, described light supply apparatus comprises relative with the edge of described diffuser plate respectively multiple secondary light sources, and the density of described reflectance ink layer is successively decreased to the middle part of described diffuser plate by region relative with described secondary light source on described diffuser plate.
Backlight module of the present utility model, wherein, described light supply apparatus comprises three light source relative with the middle part of described diffuser plate, the density of described reflectance ink layer is successively decreased to the edge of described diffuser plate by region relative with described the 3rd light source on described diffuser plate.
Display unit of the present utility model, comprises backlight module of the present utility model.
The technical solution of the utility model, adopt backside coating to have the diffuser plate of reflectance ink to regulate the light-emitting uniformity of backlight module, replace the effect of LGP in side injection type backlight module, thereby can reduce production cost and the weight of side entrance back module, down straight aphototropism mode set thickness reduces relatively simultaneously.
Brief description of the drawings
Fig. 1 is the structural representation of the first embodiment of backlight module of the present utility model;
Fig. 2 is the top view of the structural representation of diffuser plate in Fig. 1;
Fig. 3 is the structural representation of the second embodiment of backlight module of the present utility model;
Fig. 4 is the structural representation of the third embodiment of backlight module of the present utility model.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail, so that those skilled in the art can better understand the utility model being implemented, but illustrated embodiment is not as to restriction of the present utility model.
Embodiment mono-
As depicted in figs. 1 and 2, backlight module of the present utility model, comprises diffuser plate 1 and is arranged at the light supply apparatus 2 of the back side one side of diffuser plate 1, the back side of diffuser plate 1 is provided with reflectance ink layer 3, for light reflection that light supply apparatus 2 is sent to diffuser plate 1.
The embodiment of backlight module of the present utility model, wherein, also comprise the reflector plate 4 of the back side one side that is arranged at diffuser plate 1, light supply apparatus 2 is arranged between reflector plate 4 and diffuser plate 1, reflector plate 4 for light reflection that light supply apparatus 2 is sent to reflectance ink layer 3.
The embodiment of backlight module of the present utility model, wherein, diffuser plate 1 comprises first side 11 and the Second Edge 12 relative with first side 11, and light supply apparatus 2 comprises the first side 11 of first light source 21, the first light sources 21 relative with the first side 11 of diffuser plate 1 near diffuser plate 1.The first light source 21 is away from the Second Edge 12 of diffuser plate 1.The reflectance ink density of reflectance ink layer 3 is successively decreased to Second Edge 12 by first side 11.
The embodiment of backlight module of the present utility model, wherein, the first light source 21 is LED lamp bar.
Hollow arrow in Fig. 1 between reflectance ink layer 3 and reflector plate 4 represents light path, the embodiment of backlight module of the present utility model, the back side of diffuser plate 1 is provided with reflectance ink layer 3, when the light that LED lamp bar sends is mapped to the back side of diffuser plate 1, minority light sees through diffuser plate 1 and upwards penetrates, most light is mapped to reflectance ink layer 3 surface, through the reflection of reflectance ink layer 3, light is imported to the middle part of diffuser plate 1, make thus light mix, the emergent light that diffuser plate 1 is upwards penetrated is uniform light.
In order further to make the emergent light bright dipping of ejaculation on diffuser plate 1 even, the density of reflectance ink layer by the near-end of LED lamp bar to the far-end of LED lamp bar by reducing, the reflectance ink density that is reflectance ink layer 3 is successively decreased to Second Edge 12 (along F direction) by first side 11, can make like this light of the near-end of LED lamp bar more reflect the middle part that imports diffuser plate 1, make whole backlight module bright dipping more even.
The coating of reflectance ink layer can directly be printed on diffuser plate by printing screen plate, and Density Distribution can realize by the dot density that regulates printing screen plate.
Embodiment bis-
As shown in Figure 3, the distinctive points of the embodiment of backlight module of the present utility model compared with embodiment mono-is, light supply apparatus 2 ' comprises the multiple secondary light sources 22 relative with the edge of diffuser plate 1, and the density of reflectance ink layer 3 is successively decreased to the middle part of diffuser plate 1 by region relative with secondary light source 22 on diffuser plate 1.
Hollow arrow in Fig. 3 between reflectance ink layer 3 and reflector plate 4 represents light path, the embodiment of backlight module of the present utility model, and wherein, light supply apparatus 2 ' comprises two relative with two opposite edges of diffuser plate 1 respectively secondary light sources 22.Two secondary light sources 22, two opposite edges of close diffuser plate 1 respectively.In the embodiment of backlight module of the present utility model, light supply apparatus also can comprise three secondary light sources or four secondary light sources relative with the edge of diffuser plate.
In order further to make the emergent light bright dipping of ejaculation on diffuser plate 1 even, in the present embodiment, the density of reflectance ink layer by the near-end of LED lamp bar to the far-end of LED lamp bar by reducing, the density that is reflectance ink layer 3 is successively decreased to the middle part (along F direction) of diffuser plate 1 by region relative with multiple secondary light sources 22 on diffuser plate 1, can make like this light of the near-end of LED lamp bar more reflect the middle part that imports diffuser plate 1, make whole backlight module bright dipping more even.
Embodiment tri-
As shown in Figure 4, the embodiment of backlight module of the present utility model, wherein, light supply apparatus 2 " comprise three light source 23 relative with the middle part of diffuser plate 1, the density of reflectance ink layer 3 is successively decreased to the edge of diffuser plate 1 by region relative with the 3rd light source 23 on diffuser plate 1.
Hollow arrow in Fig. 1 between reflectance ink layer 3 and reflector plate 4 represents light path, in order further to make the emergent light bright dipping of ejaculation on diffuser plate 1 even, in the present embodiment, the density of reflectance ink layer by the near-end of LED lamp bar to the far-end of LED lamp bar by reducing, the density that is reflectance ink layer 3 is successively decreased to the edge (along F direction) of diffuser plate 1 by region relative with the 3rd light source 23 on diffuser plate 1, can make like this light of the near-end of LED lamp bar more reflect the middle part that imports diffuser plate 1, make whole backlight module bright dipping more even.
Display unit of the present utility model, comprises backlight module of the present utility model.
Display unit of the present utility model can be: any product or parts with Presentation Function such as Electronic Paper, LCD TV, liquid crystal display, DPF, mobile phone, panel computer.
The technical solution of the utility model, adopt backside coating to have the diffuser plate of reflectance ink to regulate the light-emitting uniformity of backlight module, replace the effect of side injection type backlight module light guide plate, thereby can reduce production cost and the weight of side entrance back module, down straight aphototropism mode set thickness reduces relatively simultaneously.
In the backlight module of utility model, the reflecting surface of reflector plate 4 is without the lower surface contact with LGP, therefore need not consider that the scuffing between reflector plate and LGP is bad, the reflecting surface of reflector plate 4 is without the specially treated of process scratch resistance, and production cost further reduces thus.
Display unit of the present utility model is because installed backlight module of the present utility model, and product quality further improves.
The above is only preferred embodiment of the present utility model; it should be pointed out that for those skilled in the art, do not departing under the prerequisite of the utility model principle; can also make some improvements and modifications, these improvements and modifications also should be considered as protection domain of the present utility model.
Claims (6)
1. a backlight module, comprises diffuser plate and is arranged at the light supply apparatus of the back side one side of described diffuser plate, it is characterized in that, the back side of described diffuser plate is provided with reflectance ink layer, for the extremely described diffuser plate of light reflection that described light supply apparatus is sent.
2. backlight module according to claim 1, it is characterized in that, also comprise the reflector plate of the back side one side that is arranged at described diffuser plate, described light supply apparatus is arranged between described reflector plate and described diffuser plate, the light reflection extremely described reflectance ink layer of described reflector plate for described light supply apparatus is sent.
3. backlight module according to claim 1, it is characterized in that, described diffuser plate comprises first side and the Second Edge relative with described first side, described light supply apparatus comprises first light source relative with the first side of described diffuser plate, and the reflectance ink density of described reflectance ink layer is successively decreased to described Second Edge by described first side.
4. backlight module according to claim 1, it is characterized in that, described light supply apparatus comprises relative with the edge of described diffuser plate respectively multiple secondary light sources, and the density of described reflectance ink layer is successively decreased to the middle part of described diffuser plate by region relative with described secondary light source on described diffuser plate.
5. backlight module according to claim 1, it is characterized in that, described light supply apparatus comprises three light source relative with the middle part of described diffuser plate, and the density of described reflectance ink layer is successively decreased to the edge of described diffuser plate by region relative with described the 3rd light source on described diffuser plate.
6. a display unit, is characterized in that, comprises the backlight module as described in claim 1-5 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420325598.7U CN203907382U (en) | 2014-06-18 | 2014-06-18 | Backlight module and display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420325598.7U CN203907382U (en) | 2014-06-18 | 2014-06-18 | Backlight module and display device |
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| Publication Number | Publication Date |
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| CN203907382U true CN203907382U (en) | 2014-10-29 |
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| CN201420325598.7U Active CN203907382U (en) | 2014-06-18 | 2014-06-18 | Backlight module and display device |
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| CN (1) | CN203907382U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487962A (en) * | 2016-12-06 | 2017-03-08 | 广东欧珀移动通信有限公司 | Cover plate and mobile terminal |
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2014
- 2014-06-18 CN CN201420325598.7U patent/CN203907382U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106487962A (en) * | 2016-12-06 | 2017-03-08 | 广东欧珀移动通信有限公司 | Cover plate and mobile terminal |
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