CN207867063U - Backlight module and diffusion sheet applied to backlight module - Google Patents
Backlight module and diffusion sheet applied to backlight module Download PDFInfo
- Publication number
- CN207867063U CN207867063U CN201721888746.6U CN201721888746U CN207867063U CN 207867063 U CN207867063 U CN 207867063U CN 201721888746 U CN201721888746 U CN 201721888746U CN 207867063 U CN207867063 U CN 207867063U
- Authority
- CN
- China
- Prior art keywords
- diffusion sheet
- coating layer
- backlight module
- light
- pearl
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000009792 diffusion process Methods 0.000 title claims abstract description 43
- 239000011247 coating layer Substances 0.000 claims abstract description 44
- 238000009826 distribution Methods 0.000 claims abstract description 17
- 230000005540 biological transmission Effects 0.000 claims abstract description 6
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 5
- 239000004033 plastic Substances 0.000 claims description 3
- 229920003023 plastic Polymers 0.000 claims description 3
- 239000004743 Polypropylene Substances 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
- 238000000576 coating method Methods 0.000 claims description 2
- -1 polypropylene Polymers 0.000 claims description 2
- 229920001155 polypropylene Polymers 0.000 claims description 2
- 239000000758 substrate Substances 0.000 description 5
- 238000004049 embossing Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 229920002972 Acrylic fiber Polymers 0.000 description 1
- 239000004925 Acrylic resin Substances 0.000 description 1
- 229920000178 Acrylic resin Polymers 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
Abstract
The utility model provides a kind of backlight module and a kind of diffusion sheet applied to backlight module, and diffusion sheet includes piece ontology；The upper surface of described ontology is provided with the first coating layer of light transmission；The first scattering pearl is provided with to random distribution in first coating layer；The first scattering pearl makes the bowl configurations of the surface formation random distribution of first coating layer.Using diffusion sheet above-mentioned, after the light of piece ontology enters the first coating layer, some light is radiated on the first scattering pearl, is scattered to all directions by the first scattering pearl scattering, and by the pit that the first scattering pearl is formed on the upside of the first coating layer；In this way, after light is projected from the upper surface of the first coating layer, all directions distribution is mixed, and reduces the non-uniform degree of light all directions for entering diffusion sheet.
Description
Technical field
The utility model is related to technical field of liquid crystal display, more particularly to a kind of backlight module and applied to backlight module
Diffusion sheet.
Background technology
To avoid because of light extraction problem of non-uniform, backlight mould caused by light guide plate surface disadvantage and backlight light are uneven
Group further includes the diffusion sheet being arranged on the upside of light guide plate or back light；Diffusion sheet realizes light using the coarse structure on surface
Random refraction to all directions, then so that the light-emitting surface light of backlight module is uniform as possible.
In the prior art, diffuser plate mostly uses embossing technique manufacture, is formed on the surface of the substrate using embossing cylinder random
The decorative pattern of distribution.In actual production, two embossing cylinders are to squeezing the substrate by the two gap so that the upper and lower surface of substrate is equal
Form random decorative pattern.But material and technique limitation, when two embossing cylinders squeeze substrate, the particle meeting that is detached from from substrate
It is deposited in decorative pattern and does not allow easy-clear, when subsequently assembling backlight module, particle may be detached from diffuser plate and be entered because of vibration
To the surface being bonded with backlight module so that light guide plate surface scratches and influence the normal outgoing of light, then so that backlight mould
Group forms defect ware.
Utility model content
Do not allow to solve existing be deposited in decorative pattern using the particle formed when diffuser plate making made of extrusion process
The problem of easy-clear, the utility model provide a kind of new diffusion sheet and the backlight module using aforementioned diffusion sheet.
The utility model provides a kind of diffusion sheet applied to backlight module, including piece ontology；
The upper surface of described ontology is provided with the first coating layer of light transmission；
The first scattering pearl is provided with to random distribution in first coating layer；
The first scattering pearl makes the bowl configurations of the surface formation random distribution of first coating layer.
Optionally, the second coating layer of light transmission is provided in the lower surface of described ontology；
The second scattering pearl is provided with to random distribution in second coating layer；
The second scattering pearl makes the bowl configurations of the surface formation random distribution of second coating layer.
Optionally, second coating layer is antistatic coating.
Optionally, the diameter of the first scattering pearl is less than 15.0um.
Optionally, the first scattering pearl is that pearl is scattered made of polypropylene plastics.
The utility model also provides a kind of backlight module, including light source, light guide plate and foregoing diffusion sheet；
The light source is arranged at the side of the light guide plate or the bottom surface of the light guide plate；
The diffusion sheet is fitted in the upper surface side of the light guide plate, and first coating layer is far from the leaded light
Plate.
Optionally, the quantity of the diffusion sheet is two panels, and diffusion sheet described in two panels is stacked；
Prismatic lens are additionally provided between the diffusion sheet described in two panels.
Using diffusion sheet above-mentioned, after the light of piece ontology enters the first coating layer, some light is radiated at
On one scattering pearl, by the first scattering pearl scattering, and by the first pit for being formed on the upside of the first coating layer of scattering pearl to each
Direction scatters；In this way, after light is projected from the upper surface of the first coating layer, all directions distribution is mixed, and is reduced and is entered
The non-uniform degree of light all directions of diffusion sheet.
Description of the drawings
By reference to the following description in conjunction with the accompanying drawings and the contents of the claims, and with to the utility model more
Comprehensive understanding, other purposes and result of the utility model will be more clearly understood and understood.In the accompanying drawings：
Fig. 1 is the backlight module schematic cross-section that embodiment provides；
Wherein：11- diffusion sheets, 111- piece ontologies, the first coating layers of 112-, 113- first scatter pearl, and 114- second is coated with
Layer, 115- second scatter pearl, 12- light guide plates, 13- light sources, 14- reflecting plates.
Identical label indicates similar or corresponding feature or function in all the appended drawings.
Specific implementation mode
Specific embodiment of the utility model is described in detail below with reference to attached drawing.
Fig. 1 is the backlight module schematic cross-section that embodiment provides.As shown in Figure 1, backlight module provided in this embodiment
Including diffusion sheet 11, light guide plate 12, light source 13 and reflector plate.First 11 structure of diffusion sheet therein is introduced below, then is analyzed
The structure of backlight module.
As shown in Figure 1, the diffusion sheet 11 in the present embodiment includes piece ontology 111, it is provided in the upper surface of piece ontology 111
First coating layer 112；First coating layer 112 is made of translucent material；It is dispersedly provided with first in the first coating layer 112
Pearl 113 is scattered, the first scattering pearl 113 is randomly distributed in the first coating layer 112 again so that the surface shape of the first coating layer 112
At the bowl configurations of random distribution.
Using diffusion sheet 11 above-mentioned, after the light of piece ontology 111 enters the first coating layer 112, some light
It is radiated on the first scattering pearl 113, is scattered by the first scattering pearl 113, and by the first scattering pearl 113 in the first coating layer 112
The pit that upside is formed is scattered to all directions；In this way, after light is projected from the upper surface of the first coating layer 112, all directions
Distribution is mixed, and reduces the non-uniform degree of light all directions for entering diffusion sheet 11.
In the present embodiment, the thickness of the first coating layer 112 is between 15.0um-20.0um, to avoid the first scattering pearl 113
It is detached from the first coating layer 112, it is preferably provided as being less than 15.0um for the diameter of the first scattering pearl 113.
In the present embodiment, the first scattering pearl 113 can be plastics made of acrylic plastics.In other embodiments,
One scattering pearl 113 can also be the widely used scattering in this field but the material with preferable light transmission features.
Please further referring to Fig. 1, in the present embodiment, diffusion sheet 11 further includes the second coating layer 114；Second coating layer
114 are arranged in the lower face side of piece ontology 111, and the second scattering pearl 115 is provided with to random distribution in the second coating layer 114；
Second scattering pearl 115 is so that the surface of the second coating layer 114 forms the bowl configurations of random distribution.Second scattering pearl 115 and the
The bowl configurations of two coating layers, 114 lower surface are entered back into after the light entered by downside is disperseed first to piece ontology 111
It is interior；In this way, after light is first homogenized by the first coating layer 112, then homogenized by the second coating layer 114.
As previously mentioned, in the present embodiment, the thickness of the second coating layer 114 can be between 15.0um-20.0um, and first dissipates
Penetrating the diameter of pearl 113, it is preferably provided as being less than 15.0um.Other second scattering pearl 115 can also be made of acrylic resin.
The utility model embodiment also provides the backlight module using aforementioned diffusion sheet 11.As shown in Figure 1, backlight module
Diffusion sheet 11 is bonded the upper surface setting of light guide plate 12, and the reflecting plate 14 of backlight module is bonded the lower surface setting of light guide plate 12,
Light source 13 is arranged in the side of light guide plate 12, after the light that light source 13 is emitted enters light guide plate 12, by light guide plate 12 and reflection
Plate 14 is reflected into 11 side of diffusion sheet；Light projects backlight module after diffusion sheet 11.
In the present embodiment, light source 13 can be that linear light source 13 can also be area source 13.In other embodiments, light source 13
It can also be arranged in the downside of light guide plate 12, setting reflecting plate 14 can be cancelled therewith.
Further, in other embodiments, the quantity of diffusion sheet 11 can be two panels.The stacking of two panels diffusion sheet 11 is set
It sets, wherein a piece of fitting light guide plate 12.It is additionally provided between two layers of diffusion sheet 11 and gathers in specific direction for realizing light
Prismatic lens, improve predetermined angular in light intensity.
Above description is only a specific implementation of the present invention, but the scope of protection of the utility model is not limited to
In this, any one skilled in the art within the technical scope disclosed by the utility model, can readily occur in variation
Or replace, it should be covered within the scope of the utility model.Therefore, the scope of protection of the utility model is answered described with power
Subject to the protection domain that profit requires.
Claims (7)
1. a kind of diffusion sheet applied to backlight module, including piece ontology (111)；It is characterized in that：
The upper surface of described ontology (111) is provided with the first coating layer (112) of light transmission；
The first scattering pearl (113) is provided in the interior random distribution of first coating layer (112)；
The first scattering pearl (113) makes the bowl configurations of the surface formation random distribution of first coating layer (112).
2. the diffusion sheet according to claim 1 applied to backlight module, it is characterised in that：
The lower surface of described ontology (111) is provided with the second coating layer (114) of light transmission；
The second scattering pearl (115) is provided in the interior random distribution of second coating layer (114)；
The second scattering pearl (115) makes the bowl configurations of the surface formation random distribution of second coating layer (114).
3. the diffusion sheet according to claim 2 applied to backlight module, it is characterised in that：
Second coating layer (114) is antistatic coating.
4. being applied to the diffusion sheet of backlight module according to claim 1-3 any one of them, it is characterised in that：
The diameter of the first scattering pearl (113) is less than 15.0um.
5. the diffusion sheet according to claim 4 applied to backlight module, it is characterised in that：
The first scattering pearl (113) is that pearl is scattered made of polypropylene plastics.
6. a kind of backlight module, it is characterised in that：Including light source (13), light guide plate (12) and such as any one of claim 1-5 institutes
The diffusion sheet (11) stated；
The light source (13) is arranged at the side of the light guide plate (12) or the bottom surface of the light guide plate (12)；
The diffusion sheet (11) is fitted in the upper surface side of the light guide plate (12), and first coating layer (112) is separate
The light guide plate (12).
7. backlight module according to claim 6, it is characterised in that：
The quantity of the diffusion sheet (11) is two panels, and diffusion sheet described in two panels (11) is stacked；
The diffusion sheet described in two panels is additionally provided with prismatic lens between (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721888746.6U CN207867063U (en) | 2017-12-28 | 2017-12-28 | Backlight module and diffusion sheet applied to backlight module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721888746.6U CN207867063U (en) | 2017-12-28 | 2017-12-28 | Backlight module and diffusion sheet applied to backlight module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207867063U true CN207867063U (en) | 2018-09-14 |
Family
ID=63463482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721888746.6U Expired - Fee Related CN207867063U (en) | 2017-12-28 | 2017-12-28 | Backlight module and diffusion sheet applied to backlight module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207867063U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279452A (en) * | 2017-12-28 | 2018-07-13 | 重庆市中光电显示技术有限公司 | Backlight module and diffusion sheet applied to backlight module |
-
2017
- 2017-12-28 CN CN201721888746.6U patent/CN207867063U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108279452A (en) * | 2017-12-28 | 2018-07-13 | 重庆市中光电显示技术有限公司 | Backlight module and diffusion sheet applied to backlight module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20180914 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |