CN211653203U - High-brightness composite light guide plate - Google Patents
High-brightness composite light guide plate Download PDFInfo
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- CN211653203U CN211653203U CN201922404362.8U CN201922404362U CN211653203U CN 211653203 U CN211653203 U CN 211653203U CN 201922404362 U CN201922404362 U CN 201922404362U CN 211653203 U CN211653203 U CN 211653203U
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Abstract
The utility model discloses a high-brightness composite light guide plate, which comprises a light guide plate main body, a reflecting layer, a shielding layer, a positioning layer and a reflecting shell, wherein the front side surface of the light guide plate main body is a light incident surface, and the reflecting layer is laminated on the upper surface of the light guide plate main body; the shielding layer is adhered to the lower surface of the light guide plate body; the positioning layer is adhered to the lower surface of the shielding layer; the front side surface of the light guide plate body is concavely provided with a plurality of rhombic light guide grooves capable of dispersing incident light, the rhombic light guide grooves can uniformly disperse the incident light, the side surface of the light guide plate is provided with the light reflecting shell, the inner side surface of the light reflecting shell is a light reflecting surface, and the light reflecting surface can reflect the light in the light guide plate into the light guide plate, so that the light can be dispersed more uniformly; meanwhile, a hollow refraction cavity is arranged in the middle of the reflecting layer, so that light can be dispersed again when entering the reflecting layer, and the light guide plate can effectively provide uniform light emitting brightness.
Description
Technical Field
The utility model relates to a light guide plate field technique especially indicates a compound light guide plate of high luminance.
Background
The lcd module is a non-self-luminous display device, and the display is mainly realized by controlling the passage or non-passage of light beams emitted from an external light source, so a corresponding backlight or front light module is usually required, and the backlight or front light module can guide the light beams emitted from the external light source to the display panel to realize the display function.
The backlight module in the prior art is mainly composed of a light source, a light guide plate, a diffusion plate and a prism plate. The light guide plate comprises an incident surface, a light-emitting surface and a bottom surface, wherein the incident surface receives light beams emitted by a light source opposite to the incident surface and guides the light beams into the light guide plate, the bottom surface reflects and scatters the guided light beams to form scattered light beams which are uniformly dispersed along all directions, and the light-emitting surface guides the uniformly dispersed light beams out of the light guide plate.
The reflection and scattering of the light beam by the bottom surface are realized by the mesh points. The bottom surface of the light guide plate is distributed with a plurality of uniformly distributed net points which reflect and scatter the light beams guided from the incident surface. However, since the light emitted from the light source enters from the incident surface of the light guide plate, the brightness of the portion of the light guide plate near the light source is high, and the brightness of the portion far from the light source is low, so that the dot design cannot effectively provide uniform brightness.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention is directed to a composite light guide plate with high luminance, which can effectively solve the problem that the conventional light guide plate cannot effectively provide uniform luminance.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a high-brightness composite light guide plate comprises a light guide plate main body, a reflecting layer, a shielding layer, a positioning layer and a light reflecting shell, wherein the front side surface of the light guide plate main body is a light incident surface, a plurality of rhombic light guide grooves capable of dispersing incident light rays are concavely arranged on the front side surface of the light guide plate main body, the reflecting layer is arranged on the upper surface of the light guide plate main body in a laminated mode, and a hollow refraction cavity is arranged in the middle of the reflecting layer; the shielding layer is adhered to the lower surface of the light guide plate body and comprises a pure quartz glass layer, a fluorite glass mixed layer and a germanium-fluorite glass mixed layer from top to bottom; the positioning layer is adhered to the lower surface of the shielding layer; the middle of the reflecting shell is provided with an accommodating space, the light guide plate main body, the reflecting layer, the shielding layer and the positioning layer are all arranged in the accommodating space, and the inner side surface of the reflecting shell is a reflecting surface capable of reflecting light.
As a preferred embodiment: the plurality of rhombic light guide grooves are arranged in a straight line at equal intervals.
As a preferred embodiment: the depth of the rhombic light guide groove is 0.5-0.8 cm.
As a preferred embodiment: the cross section of the refraction cavity is 8-pointed star shape.
As a preferred embodiment: the locating plate is made of resin.
Compared with the prior art, the utility model obvious advantage and beneficial effect have, particularly, can know by above-mentioned technical scheme:
the front side surface of the light guide plate body is concavely provided with a plurality of rhombic light guide grooves capable of dispersing incident light, the rhombic light guide grooves can uniformly disperse the incident light, the side surface of the light guide plate is provided with the light reflecting shell, the inner side surface of the light reflecting shell is a light reflecting surface, and the light reflecting surface can reflect the light in the light guide plate into the light guide plate, so that the light can be dispersed more uniformly; meanwhile, a hollow refraction cavity is arranged in the middle of the reflecting layer, so that light can be dispersed again when entering the reflecting layer, and the light guide plate can effectively provide uniform light emitting brightness.
To illustrate the structural features and functions of the present invention more clearly, the present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
Drawings
FIG. 1 is a horizontal cross-sectional view of a preferred embodiment of the invention;
FIG. 2 is a vertical cross-sectional view of the preferred embodiment of the present invention;
fig. 3 is a cross-sectional view of the shielding layer according to the preferred embodiment of the present invention.
The attached drawings indicate the following:
10. light guide plate body 101 and light incident surface
102. Rhombic light guide groove 20 and reflection layer
201. Refractive cavity 30, shielding layer
31. Pure quartz glass layer 32 and fluorine quartz glass mixed layer
33. Germanium-fluorine quartz glass mixed layer 40, positioning layer
50. Reflecting shell 501 and reflecting surface
502. A receiving space 60 and a light source.
Detailed Description
Referring to fig. 1 to 3, a specific structure of a preferred embodiment of the present invention is shown, which includes a light guide plate body 10, a reflective layer 20, a shielding layer 30, a positioning layer 40 and a reflective shell 50.
The front side surface of the light guide plate body is a light incident surface 101, and the light incident surface 101 is a surface irradiated by light. The front side surface of the light guide plate body is concavely provided with a plurality of rhombic light guide grooves 102 capable of dispersing incident light, the rhombic light guide grooves 102 can refract external light at a plurality of angles to enter the light guide plate, so that the light is dispersed more uniformly, the reflecting layer 20 is overlapped on the upper surface of the light guide plate body, the middle of the reflecting layer 20 is provided with a hollow refraction cavity 201, and the hollow refraction cavity 201 and the reflecting layer 20 are made of different materials, so that the light can be dispersed again when entering the reflecting layer 20, and the light is further uniform; the shielding layer 30 is adhered to the lower surface of the light guide plate body, the shielding layer 30 comprises a pure quartz glass layer 31, a fluorite glass mixed layer 32 and a germanium-fluorite glass mixed layer 33 from top to bottom, the light guide plate has a larger effective refractive index difference value through the shielding layer 30, and therefore the use crosstalk is reduced; the positioning layer 40 is adhered to the lower surface of the shielding layer 30, and the positioning layer 40 is mainly used for providing protection for the shielding layer 30; the middle of the reflective shell 50 is provided with an accommodating space 502, the light guide plate body 10, the reflective layer 20, the shielding layer 30 and the positioning layer 40 are all arranged in the accommodating space 502, the inner side surface of the reflective shell 50 is a reflective surface 501 capable of reflecting light, and the reflective shell 50 can reflect the light refracted to the side surface of the light guide plate, so that the light enters the inside of the reflective plate again.
In the present embodiment, the plurality of diamond-shaped light guide grooves 102 are arranged in a straight line at equal intervals. The positioning plate is made of resin, and can also be one of epoxy resin, phenolic resin, polyacrylic resin and polyvinyl chloride resin.
Further, the depth of the rhombic light guide groove 102 is 0.5-0.8 cm. The cross section of the refraction cavity 201 is in an 8-pointed star shape, and the cross section of the refraction cavity 201 can be in other shapes.
Detailed description the working principle of the present embodiment is as follows:
when the light guide plate is used, the light source 60 is located on the right side of the light guide plate main body 10, light generated by the light source 60 firstly enters the light guide plate main body 10 from the light incident surface 101 through the rhombic light guide grooves 102, then is upwards emitted under the matching action of the reflecting layer 20, the shielding layer 30 and the reflecting shell, and finally is evenly emitted through the positioning layer 40.
The utility model discloses a design focus lies in:
the front side surface of the light guide plate body is concavely provided with a plurality of rhombic light guide grooves capable of dispersing incident light, the rhombic light guide grooves can uniformly disperse the incident light, the side surface of the light guide plate is provided with the light reflecting shell, the inner side surface of the light reflecting shell is a light reflecting surface, and the light reflecting surface can reflect the light in the light guide plate into the light guide plate, so that the light can be dispersed more uniformly; meanwhile, a hollow refraction cavity is arranged in the middle of the reflecting layer, so that light can be dispersed again when entering the reflecting layer, and the light guide plate can effectively provide uniform light emitting brightness.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any slight modifications, equivalent changes and modifications made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (5)
1. A high-brightness composite light guide plate is characterized in that: the light guide plate comprises a light guide plate main body, a reflecting layer, a shielding layer, a positioning layer and a reflecting shell, wherein the front side surface of the light guide plate main body is a light incoming surface, a plurality of rhombic light guide grooves capable of dispersing incident light rays are concavely arranged on the front side surface of the light guide plate main body, the reflecting layer is arranged on the upper surface of the light guide plate main body in a stacking manner, and a hollow refraction cavity is arranged in the middle of the reflecting layer; the shielding layer is adhered to the lower surface of the light guide plate body and comprises a pure quartz glass layer, a fluorite glass mixed layer and a germanium-fluorite glass mixed layer from top to bottom; the positioning layer is adhered to the lower surface of the shielding layer; the middle of the reflecting shell is provided with an accommodating space, the light guide plate main body, the reflecting layer, the shielding layer and the positioning layer are all arranged in the accommodating space, and the inner side surface of the reflecting shell is a reflecting surface capable of reflecting light.
2. The high-luminance composite light guide plate according to claim 1, wherein: the plurality of rhombic light guide grooves are arranged in a straight line at equal intervals.
3. The high-luminance composite light guide plate according to claim 1, wherein: the depth of the rhombic light guide groove is 0.5-0.8 cm.
4. The high-luminance composite light guide plate according to claim 1, wherein: the cross section of the refraction cavity is 8-pointed star shape.
5. The high-luminance composite light guide plate according to claim 1, wherein: the positioning layer is made of resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922404362.8U CN211653203U (en) | 2019-12-27 | 2019-12-27 | High-brightness composite light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922404362.8U CN211653203U (en) | 2019-12-27 | 2019-12-27 | High-brightness composite light guide plate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211653203U true CN211653203U (en) | 2020-10-09 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922404362.8U Active CN211653203U (en) | 2019-12-27 | 2019-12-27 | High-brightness composite light guide plate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211653203U (en) |
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2019
- 2019-12-27 CN CN201922404362.8U patent/CN211653203U/en active Active
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