CN205067783U - Backlight LED module of light guide plate and this light guide plate - Google Patents
Backlight LED module of light guide plate and this light guide plate Download PDFInfo
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- CN205067783U CN205067783U CN201520696445.8U CN201520696445U CN205067783U CN 205067783 U CN205067783 U CN 205067783U CN 201520696445 U CN201520696445 U CN 201520696445U CN 205067783 U CN205067783 U CN 205067783U
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- 238000009792 diffusion process Methods 0.000 claims description 3
- 230000000712 assembly Effects 0.000 claims description 2
- 238000000429 assembly Methods 0.000 claims description 2
- 239000000758 substrate Substances 0.000 abstract description 12
- 230000003287 optical effect Effects 0.000 abstract description 3
- 235000009537 plain noodles Nutrition 0.000 abstract 8
- 241000561734 Celosia cristata Species 0.000 abstract 1
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- 210000001520 comb Anatomy 0.000 abstract 1
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- 238000009833 condensation Methods 0.000 description 4
- 230000005494 condensation Effects 0.000 description 4
- 239000002245 particle Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000001746 injection moulding Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000003848 UV Light-Curing Methods 0.000 description 1
- 238000001723 curing Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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- 230000003014 reinforcing effect Effects 0.000 description 1
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Abstract
The utility model relates to an optics technical field specifically discloses a backlight LED module of light guide plate and this light guide plate. The light guide plate includes the light guide plate substrate, the light guide plate substrate is equipped with into the plain noodles, goes out plain noodles and bottom surface, go out the plain noodles with the bottom surface sets up relatively, the area of plane of going into the plain noodles constitution is greater than go out the plain noodles with the cross sectional area of bottom surface, and be smooth transition, form the transition step. This income plain noodles still is equipped with the structure of cockscomb structure, it is equipped with spotlight type structure to go out the plain noodles, the bottom surface is equipped with the leaded light and handles the layer, go out the plain noodles with the bottom surface sets up relatively. The backlight LED module of this light guide plate is including reflector layer, leaded light sheet layer, diffuse layer, the layer of adding lustre to that sets gradually, the utility model discloses small -size mould plastics ultra -thin light guide plate in -process leaded light inefficiency, a series of problems that the yield is low have been solved in current to the light guide plate, improve the total amount of going into light, avoid the hourglass optical phenomena into the light quantity.
Description
Technical Field
The utility model relates to the field of optical technology, especially, relate to a light guide plate and backlight LED module of this light guide plate.
Background
With the thinner and thinner structure of digital products such as mobile phones and tablet computers, the corresponding requirements for the thickness of the backlight module are higher and higher, and meanwhile, the requirements for the light guide plate in the backlight module are higher and higher.
The existing small-medium-sized light guide plate is mainly produced by adopting an injection molding process, namely, a light guide dot structure is formed after injection molding through hitting points on the surface of an injection mold, so that light guide is realized. However, there are several disadvantages to the production of light guide plates with ultra-thin thickness:
(1) the equipment is expensive, the current ultrathin light guide plate with the thickness of about 0.3mm needs imported injection molding equipment, and the matching investment needs more than 150 million RMB;
(2) the light guide plate produced has low light rate, and the mesh point of the injection mold light guide plate is not flexibly designed and has poor mesh point forming stability, so that the optical effect is not ideal;
(3) insufficient light incidence or light leakage phenomenon occurs.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a backlight LED module of light guide plate and this light guide plate aims at solving the light guide plate light rate low, go into the light volume not enough and go into light department light leak phenomenon scheduling problem.
In order to achieve the above object of the present invention, the technical solution is as follows:
a light guide plate comprises a light guide plate base material, wherein the light guide plate base material is provided with a light incident surface, a light emergent surface and a bottom surface; the light emitting surface and the bottom surface are arranged oppositely, the plane area formed by the light incident surface is larger than the cross-sectional area of the light emitting surface and the bottom surface, and the light incident surface is in smooth transition to form a transition step.
Preferably, the light incident surface is further provided with a sawtooth structure.
Preferably, the light-emitting surface is provided with a light-gathering structure and/or the bottom surface is further laminated with a light-guiding treatment layer.
Preferably, the light-emitting surface of the base material of the light guide plate is a frosted surface or a V-shaped groove structure.
Preferably, the light guide processing layer is provided into an ink film layer structure or a dot microstructure or a V-shaped microstructure.
Preferably, the edge part of the base material of the light guide plate is provided with a clamping structure or a chamfer angle structure for assembling and fixing with other matching assemblies.
And the backlight LED module comprises a reflective layer, a light guide plate layer, a diffusion layer and a light-adding layer which are sequentially arranged, wherein the light guide plate layer is the light guide plate layer.
Preferably, the LED module further includes a line light source disposed in front of the light incident surface of the light guide plate layer.
The light guide plate provided by the utility model has the advantages that the area of the light incident surface is larger than the area formed by the light emergent surface and the bottom surface in a transverse mode, and the light incident surface is in smooth transition to form steps, so that the light incident surface can be increased, and the total light quantity entering the light guide plate is improved; meanwhile, the step structure utilizes the total reflection principle, so that the problem of light leakage of incident light is avoided; the design can also ensure that the thickness of the main body of the base material of the light guide plate is less than or equal to 0.3mm, which is beneficial to saving manufacturing materials.
Drawings
Fig. 1a and 1b are schematic structural diagrams of a light guide plate provided by the present invention;
fig. 2 is a schematic view of a light-gathering structure of a light guide plate according to the present invention;
FIG. 3 is a schematic view of the structure of the ink film on the light guide layer of the light guide plate according to the present invention;
FIG. 4 is a schematic view of a dot structure of a light guide layer of a light guide plate according to the present invention;
FIGS. 5a and 5b are schematic diagrams of a standard V-shaped microstructure of a light guide layer of a light guide plate according to the present invention;
FIG. 6a, FIG. 6b, and FIG. 6c are the V-shaped micro-structure derived concave junction of the light guide plate
A schematic diagram;
fig. 7 is a schematic view of the light guide plate backlight LED module structure provided by the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1a and 1b, the present invention provides a light guide plate, which includes a light guide plate substrate 1, wherein the light guide plate substrate is provided with a light incident surface 11, a light emitting surface 12 and a bottom surface 13; the light emitting surface 12 and the bottom surface 13 are arranged oppositely.
Wherein,
in one embodiment, the planar area of the light incident surface 11 is larger than the cross-sectional area formed by the light emergent surface 12 and the bottom surface 13, and the light incident surface 11 and the main body of the light guide plate substrate 1 are further provided with smooth transition connection similar to a reinforcing rib to form a step 112 with smooth transition. With such a design, when the thickness of the light guide plate substrate 1 is reduced to 0.3mm or less, the total amount of incident light can be increased; the smoothly transitional step 112 can effectively prevent light leakage by using the total reflection principle, and the total reflected light is also totally reflected at the zigzag structure, so that the effect that the light can be incident without being emitted from the light incident surface 11 is realized, and the amount of the incident light is enhanced.
In a specific embodiment, the light incident surface 11 is further configured as a sawtooth structure 111, and the sawtooth structure 111 can increase the surface area of the light incident surface 11, which is beneficial to more light passing through the light incident surface 11, thereby increasing the total amount of light; meanwhile, the local incident part of the incident light surface 11 is prevented from being too bright to form a lamp eye.
In an embodiment, the light emitting surface 12 has a light-condensing structure, and specifically, the light emitting surface 12 is configured to have a ground structure or a "V" groove structure 121, as shown in fig. 2. The ground surface structure has a certain light condensation effect, and the V-shaped groove structure 121 has a good light condensation effect, so that the brightness of emergent light can be improved. The choice of the grinding surface structure or the V-shaped groove structure 121 can be determined according to the effect to be achieved by light condensation.
In a specific embodiment, the angle of the V-shaped included angle of the V-shaped groove structure 121 is 60 to 120 degrees, and the light condensation effect is obviously better than that of other angles within the angle range.
In one embodiment, the bottom surface 13 is provided with a light guiding processing layer 131, and the light guiding processing layer 131 can be provided as an ink film layer structure 1311, or a dot microstructure 1312 or a "V" type microstructure 1313, 1314. The structural design is mainly used for guiding the light to be uniformly emitted out on the light emitting surface 12, and the specific structure is shown in fig. 3 to 6.
Further, the light guide layer can be formed as an ink film layer 1311, as shown in fig. 3. The specific manufacturing process comprises the following steps: an ink film layer is constructed on the light guide plate substrate 1, the substrate of the ink film layer is transparent ink, and micro-scattering light guide particles with strong reflection and refraction are contained in the ink film layer. The light guide particles are distributed at the part close to the light source, the density is smaller, the density of the part far away from the light source is gradually increased, and the uniform light emitting of the light guide plate is realized. The density of the light-guiding particles can be adjusted appropriately at some portions where strong or weak reflected light occurs.
Further, the light guiding layer is formed with a dot structure 1312 as shown in FIG. 4. The specific manufacturing process comprises the steps of printing the mesh points on the light guide plate substrate 1, wherein the substrate of the mesh points is light guide ink, the inner part of the mesh points contains light guide particles with strong reflection refraction, the density and the shape of the mesh points are smaller according to the part close to the light source, the preset rule that the density and the shape of the part far away from the light source become larger gradually is arranged, and the uniform light emitting of the light guide plate is realized. The density and size of the dots can be adjusted appropriately at some positions where strong or weak reflected light appears.
Further, when the light guiding processing layer is configured as a standard "V" shaped microstructure 1313, the structure thereof can be as shown in FIG. 5a and FIG. 5 b. The manufacturing process of the structure comprises the steps of covering a layer of UV ink on the surface of the light guide plate substrate 1, constructing a V-shaped microstructure parallel to the light incident surface on the UV ink layer through rolling or other modes, and generating the structure through UV curing. The V-shaped microstructures are arranged according to a preset rule that the density and the shape of the part close to the light source are small and the density and the shape of the part far away from the light source are gradually increased, so that uniform light emitting of the light guide plate is realized. The density and size of the V-shaped microstructures can be adjusted appropriately at some positions where strong or weak reflected light appears.
Further, the "V" shaped microstructure may be provided as a concave structure 1314 as shown in FIGS. 6a, 6b, and 6 c. The manufacturing process comprises the following steps: the light guide plate substrate 1 may be formed by covering a layer of UV ink on the surface, rolling or otherwise leaving a concave structure on the layer of UV ink, and curing the UV ink. The concave structure is arranged according to a preset rule that the density and the shape of the part close to the light source are small and the density and the shape of the part far away from the light source are gradually increased, so that uniform light emitting of the light guide plate is realized. The density and size of the concave structures can be adjusted appropriately at certain locations where strong or weak reflected light occurs.
In order to make the utility model discloses what the light guide plate can be better assembles and fixes with other supporting subassemblies, in an embodiment, is equipped with clamping structure or chamfer structure (not marked in the figure) at light guide plate base material border position.
Correspondingly, on the basis of the light guide plate that the embodiment that has just been said provided, the utility model discloses still provide and utilize this light guide plate further to provide a backlight LED module 3. As shown in fig. 7, the backlight LED module 3 includes a reflective layer 31, a light guide plate layer 32, a diffusion layer 33, and a light-enhancing layer 34, which are sequentially disposed.
In an embodiment, the backlight LED module further includes a line light source disposed in front of the light incident surface of the light guide plate layer 32.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A light guide plate, characterized in that: the light guide plate comprises a light guide plate base material, wherein the light guide plate base material is provided with a light incident surface, a light emergent surface and a bottom surface; the light emitting surface and the bottom surface are arranged oppositely, the plane area formed by the light incident surface is larger than the cross-sectional area of the light emitting surface and the bottom surface, and the light incident surface is in smooth transition to form a transition step.
2. The light guide plate according to claim 1, wherein: the light incident surface is also designed into a sawtooth structure.
3. The light guide plate according to claim 1, wherein: the light-emitting surface is provided with a light-gathering structure and/or the bottom surface is further laminated with a light guide processing layer.
4. The light guide plate according to claim 1, wherein: the light-emitting surface of the base material of the light guide plate is a frosted surface or is designed into a V-shaped groove structure.
5. The light guide plate according to claim 3, wherein: the light guide processing layer is arranged into an ink film layer structure or a dot microstructure or a V-shaped microstructure.
6. The light guide plate according to any one of claims 1 to 5, wherein: the edge part of the base material of the light guide plate is provided with a clamping structure or a chamfer angle structure for assembling and fixing with other matching assemblies.
7. The utility model provides a backlight LED module which characterized in that: the light guide plate comprises a reflecting layer, a light guide plate layer, a diffusion layer and a light intensifying layer which are arranged in sequence; the light guide plate layer is as claimed in any one of claims 1 to 6.
8. The backlight LED module of claim 7, wherein: the backlight LED module further comprises a line light source, and the line light source is arranged in front of the light incident surface of the light guide plate layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520696445.8U CN205067783U (en) | 2015-09-09 | 2015-09-09 | Backlight LED module of light guide plate and this light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520696445.8U CN205067783U (en) | 2015-09-09 | 2015-09-09 | Backlight LED module of light guide plate and this light guide plate |
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| Publication Number | Publication Date |
|---|---|
| CN205067783U true CN205067783U (en) | 2016-03-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520696445.8U Active CN205067783U (en) | 2015-09-09 | 2015-09-09 | Backlight LED module of light guide plate and this light guide plate |
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| Country | Link |
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| CN (1) | CN205067783U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109188595A (en) * | 2018-08-31 | 2019-01-11 | 合肥泰沃达智能装备有限公司 | A kind of method for processing light conducting plate head face |
| US10900657B2 (en) | 2017-08-01 | 2021-01-26 | Technical Consumer Products, Inc. | Edge-lit light fixture having capabilities for a secondary service |
| CN115256763A (en) * | 2022-08-16 | 2022-11-01 | 深圳市天诺通光电科技有限公司 | High-brightness high-uniformity special-shaped light guide film manufacturing process and light guide film manufactured by same |
-
2015
- 2015-09-09 CN CN201520696445.8U patent/CN205067783U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10900657B2 (en) | 2017-08-01 | 2021-01-26 | Technical Consumer Products, Inc. | Edge-lit light fixture having capabilities for a secondary service |
| CN109188595A (en) * | 2018-08-31 | 2019-01-11 | 合肥泰沃达智能装备有限公司 | A kind of method for processing light conducting plate head face |
| CN115256763A (en) * | 2022-08-16 | 2022-11-01 | 深圳市天诺通光电科技有限公司 | High-brightness high-uniformity special-shaped light guide film manufacturing process and light guide film manufactured by same |
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