CN216160867U - Light guide plate - Google Patents
Light guide plate Download PDFInfo
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- CN216160867U CN216160867U CN202121263835.8U CN202121263835U CN216160867U CN 216160867 U CN216160867 U CN 216160867U CN 202121263835 U CN202121263835 U CN 202121263835U CN 216160867 U CN216160867 U CN 216160867U
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Abstract
The present invention relates to a light guide plate. The light guide plate comprises a plate body, wherein a plurality of mesh points distributed on the plate body are arranged on the plate body, the mesh points are cylindrical, the cylindrical mesh points comprise bottom surfaces, light incident surfaces, backlight surfaces and curved surface transition surfaces, the bottom surfaces are coplanar with the surface of the plate body, the light incident surfaces and the backlight surfaces are respectively connected to two sides of the bottom surfaces, and the curved surface transition surfaces are positioned between the light incident surfaces and the backlight surfaces; the depth of the mesh point is 5-25 μm; the length of the bottom surface in the light incidence direction is 20-100 mu m, and the width of the bottom surface in the direction vertical to the light incidence direction is 10-50 mu m; the included angle between the backlight surface and the bottom surface is 55-85 degrees; the intersection line of the curved surface transition surface and the plane vertical to the surface of the plate body along the incident light direction is an arc, and the radius of the arc is 1-5 mu m. By applying the light guide plate, the depth of the mesh points, the size of the bottom surface, the included angle between the backlight surface and the bottom surface and the size of the intersection line of the curved surface transition surface and the plane vertical to the surface of the plate body along the incident light direction are designed to be the above sizes, so that the total reflection condition of light energy can be met, and the utilization rate of the light energy is improved.
Description
Technical Field
The utility model relates to the technical field of photoelectricity, in particular to a light guide plate.
Background
The principle of the light guide plate is that the total reflection of the light of the LED light source is destroyed by using dots (such as ink dots, hot-pressing dots or injection molding dots), so that the light comes out of the light guide plate, the purpose that an LED line light source is changed into a surface light source is achieved, and a light emitting source is provided for a display. In the prior art, the mesh points on the light guide plate are generally in crater shapes, and the mesh points are single in shape and type, so that the light diffusion effect is poor, the brightness of the backlight module is uneven, the luminance of the light guide plate is low, and the light energy utilization rate is low.
SUMMERY OF THE UTILITY MODEL
Therefore, it is necessary to provide a light guide plate capable of improving the light energy utilization efficiency in order to solve the problem of how to improve the light energy utilization efficiency.
A light guide plate comprises a plate body, wherein a plurality of mesh points distributed on the plate body are arranged on the plate body, the mesh points are cylindrical, the cylindrical mesh points comprise bottom surfaces, light incident surfaces, backlight surfaces and curved surface transition surfaces, the bottom surfaces are coplanar with the surface of the plate body, the light incident surfaces and the backlight surfaces are respectively connected to two sides of the bottom surfaces, and the curved surface transition surfaces are positioned between the light incident surfaces and the backlight surfaces;
the depth of the mesh point is 5-25 μm; the length of the bottom surface in the light incidence direction is 20-100 mu m, and the width of the bottom surface in the direction perpendicular to the light incidence direction is 10-50 mu m; the included angle between the backlight surface and the bottom surface is 55-85 degrees; the intersection line of the curved surface transition surface and a plane perpendicular to the surface of the plate body along the light incidence direction is an arc, and the radius of the arc is 1-5 mu m.
By adopting the light guide plate of the technical scheme of the utility model, the depth of the mesh points, the size of the bottom surface, the included angle between the backlight surface and the bottom surface and the size of the intersection line of the curved surface transition surface and the plane vertical to the surface of the plate body along the incident light direction are designed into the above sizes, so that the total reflection condition of light energy can be met, the utilization rate of light energy is improved, and the brightness, the quality of the light guide plate and the shielding property of assembly can be improved.
In one embodiment, the depth of the screen dots is 10-20 μm; the length of the bottom surface in the light incidence direction is 40-80 μm, and the width of the bottom surface in the direction perpendicular to the light incidence direction is 30-40 μm; the included angle between the backlight surface and the bottom surface is 60-80 degrees.
In one embodiment, the bottom surface is rectangular in shape.
In one embodiment, the bottom surface is formed by connecting two straight lines and two curves end to end, and the straight lines and the curves are arranged at intervals;
the curves are circular arcs, the bending directions of the two curves are the same, and the radius of each circular arc is 40-100 micrometers.
In one embodiment, an intersection line of the light incident surface and a plane perpendicular to the surface of the plate body along the light incident direction is a straight line.
In one embodiment, an intersection line of the light incident surface and a plane perpendicular to the surface of the plate body along the light incident direction is a curve, and the length of the curve is 20-120 μm.
In one embodiment, an intersection line of the backlight surface and a plane perpendicular to the surface of the plate body along the light incidence direction is a straight line.
In one embodiment, an intersection line of the backlight surface and a plane perpendicular to the surface of the plate body along the light incidence direction is a curve, and the length of the curve is 1-12 μm.
In one embodiment, a plurality of the mesh points are arranged on the plate body in rows and columns.
In one embodiment, the distance between two adjacent mesh points in the light incidence direction is 10 to 200 μm, and the distance between two adjacent mesh points in the direction perpendicular to the light incidence direction is 10 to 200 μm.
Drawings
FIG. 1 is a schematic view of a light guide plate according to a first embodiment of the present invention;
fig. 2 is a schematic perspective view of a mesh point in a light guide plate according to a first embodiment of the utility model;
FIG. 3 is a schematic bottom view of a mesh point in a light guide plate according to a first embodiment of the present invention;
FIG. 4 is a schematic cross-sectional view taken along A-A' of FIG. 3;
FIG. 5 is a schematic view of a light guide plate according to a second embodiment of the present invention;
fig. 6 is a schematic perspective view of a mesh point in a light guide plate according to a second embodiment of the present invention;
FIG. 7 is a schematic bottom view of a mesh point in a light guide plate according to a second embodiment of the present invention;
fig. 8 is a schematic cross-sectional view taken along B-B' in fig. 7.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the utility model herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the utility model. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1 to 4, a light guide plate 100 according to a first embodiment of the present invention includes a plate body 110, the plate body 110 has a plurality of dots 120 distributed on the plate body 110, the dots 120 are cylindrical, the cylindrical dots 120 include a bottom surface 121, an incident surface 122, a backlight surface 123 and a curved transition surface 124, the bottom surface 121 and the surface of the plate body 110 are coplanar, the incident surface 122 and the backlight surface 123 are respectively connected to two sides of the bottom surface 121, and the curved transition surface 124 is located between the incident surface 122 and the backlight surface 123.
Wherein the dots 120 are represented on the board body 110 in the form of grooves. In fig. 1, the direction of the arrow is the irradiation direction of the incident light, and the dots 120 are cylindrical, which means that the dots 120 are constant from one side to the other side in the direction perpendicular to the incident light along the cross section perpendicular to the surface of the plate body 110.
Referring to fig. 3 and 4, in this embodiment, the depth H1 of the dots 120 is 10 μm; the length L1 of the bottom surface 121 in the light incident direction is 50 μm, the width W1 of the bottom surface 121 in the direction perpendicular to the light incident direction is 15 μm, and the included angle alpha between the backlight surface 123 and the bottom surface 121 is 75 degrees; the intersection line of the curved surface transition surface 124 and the plane perpendicular to the surface of the plate body 110 in the light incidence direction is an arc, and the radius of the arc is 3 μm.
In the present embodiment, the depth of the mesh point 120, the size of the bottom surface 121, the included angle between the backlight surface 123 and the bottom surface 121, and the size of the intersection line of the curved surface transition surface 124 and the plane perpendicular to the surface of the plate body 110 along the light incident direction are designed to be the above-mentioned sizes, so that the total reflection condition of the light energy can be satisfied, thereby improving the light energy utilization rate, and further improving the brightness, the quality of the light guide plate 100, and the shielding performance of the assembly.
In the light guide plate 100 of the present invention, the above dimensions are not limited to these. Specifically, the depth of the dots 120 is 5 μm to 25 μm, and may be, for example, 5 μm, 10 μm, 15 μm, 20 μm, or 25 μm; the length of the bottom surface 121 in the light incident direction is 20 μm to 100 μm, and may be, for example, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm; the width of the bottom surface 121 in the direction perpendicular to the light incidence direction is 10 μm to 50 μm, and may be, for example, 10 μm, 20 μm, 30 μm, 40 μm, or 50 μm; the included angle between the backlight surface 123 and the bottom surface 121 is 55 ° to 85 °, for example, 55 °, 60 °, 65 °, 70 °, 75 °, 80 °, or 85 °; the intersection line of the curved transition surface 124 and the plane perpendicular to the surface of the plate body 110 in the light incidence direction is a circular arc, and the radius of the circular arc is 1 μm to 5 μm, and may be, for example, 1 μm, 2 μm, 3 μm, 4 μm, or 5 μm.
Wherein, the depth of the mesh points 120 is preferably 5 μm to 25 μm, the length of the bottom surface 121 in the light incidence direction is preferably 40 μm to 80 μm, the width of the bottom surface 121 perpendicular to the light incidence direction is preferably 30 μm to 40 μm, and the included angle between the backlight surface 123 and the bottom surface 121 is preferably 60 ° to 80 °.
In the present embodiment, the bottom surface 121 is rectangular in shape, as shown in fig. 3. Of course, in the light guide plate 100 of the present invention, the shape of the bottom surface 121 is not limited thereto.
In the present embodiment, the intersection line of the light incident surface 122 and the plane perpendicular to the surface of the plate body 110 along the light incident direction is a curve, and the length of the curve is 55 μm. The length of the curve may be any value from 20 μm to 120 μm, and may be, for example, 20 μm, 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, 90 μm, or 100 μm. Of course, in the light guide plate 100 of the present invention, the intersection line between the light incident surface 122 and the plane perpendicular to the surface of the plate body 110 along the light incident direction is not limited to a curve, and may also be a straight line, in which case, the light incident surface 122 is a plane.
In the present embodiment, an intersection line between the backlight surface 123 and a plane perpendicular to the surface of the plate body 110 along the light incident direction is a straight line.
In this embodiment, the dots 120 are arranged on the board body 110 in rows and columns. The distance a1 between two adjacent dots 120 in the light incident direction is 45 μm, and the distance b1 between two adjacent dots 120 perpendicular to the light incident direction is 50 μm. It should be noted that the distance between two adjacent dots 120 in the light incident direction may be any value between 10 μm and 200 μm, and the distance between two adjacent dots 120 perpendicular to the light incident direction may be any value between 10 μm and 200 μm.
The light guide plate 100 of the first embodiment can satisfy the total reflection condition of the light energy by designing the depth of the dots 120, the size of the bottom surface 121, the included angle between the backlight surface 123 and the bottom surface 121, and the size of the intersection line of the curved surface transition surface 124 and the plane perpendicular to the surface of the plate body 110 along the light incident direction to the above sizes, thereby improving the light energy utilization rate, and also improving the brightness, the quality of the light guide plate 100, and the shielding property in assembly.
Referring to fig. 5 to 8, a light guide plate 200 according to a second embodiment of the present invention includes a plate body 210, the plate body 210 has a plurality of dots 220 distributed on the plate body 210, the dots 220 are in a column shape, the column-shaped dots 220 include a bottom surface 221, a light incident surface 222, a backlight surface 223, and a curved surface transition surface 224, the bottom surface 221 is coplanar with the surface of the plate body 210, the light incident surface 222 and the backlight surface 223 are respectively connected to two sides of the bottom surface 221, and the curved surface transition surface 224 is located between the light incident surface 222 and the backlight surface 223.
Referring to fig. 7 and 8, in the present embodiment, the depth H2 of the dots 220 is 10 μm; the length L2 of the bottom surface 221 in the light incidence direction is 50 μm, the width W2 of the bottom surface 221 in the direction perpendicular to the light incidence direction is 15 μm, and the included angle β between the backlight surface 223 and the bottom surface 221 is 75 °; the intersection line of the curved surface transition surface 224 and the plane perpendicular to the surface of the plate body 210 in the light incidence direction is an arc, and the radius of the arc is 3 μm. Here, the backlight surface 223 in this embodiment is a curved surface, and an included angle β between the backlight surface 223 and the bottom surface 221 is as shown in fig. 8.
In this embodiment, the bottom surface 221 is formed by connecting two straight lines and two curved lines end to end, and the straight lines and the curved lines are arranged at intervals, as shown in fig. 7. Wherein, the curves are circular arcs, the bending directions of the two curves are the same, and the radius of the circular arc is 80 μm. In the light guide plate of the present invention, when the bottom surface is formed by connecting two straight lines and two curved lines end to end and the curved lines are circular arcs, the radius of the circular arcs is not limited to 80 μm in the present embodiment, and may be any value from 40 μm to 100 μm, for example, 40 μm, 50 μm, 60 μm, 70 μm, 90 μm, or 100 μm.
In the present embodiment, the intersection line of the light incident surface 222 and the plane perpendicular to the surface of the plate 210 along the light incident direction is a curve, and the length of the curve is 55 μm.
In the present embodiment, the intersection line of the backlight surface 223 and the plane perpendicular to the surface of the plate body 210 in the light incident direction is a curve, and the length of the curve is 12 μm. The intersection line of the backlight surface 223 and the plane perpendicular to the surface of the plate body 210 along the light incident direction and the bending direction of the intersection line of the light incident surface 222 and the plane perpendicular to the surface of the plate body 210 along the light incident direction are the same.
In the light guide plate of the present invention, when the intersection line of the backlight surface and the plane perpendicular to the plate surface in the light incident direction is a curved line, the length of the curved line is not limited to 12 μm in the second embodiment, and may be any value from 1 μm to 12 μm, for example, 1 μm, 2 μm, 3 μm, 4 μm, 5 μm, 6 μm, 7 μm, 8 μm, 9 μm, 10 μm, or 11 μm.
In the present embodiment, a plurality of dots 220 are arranged on the board body 210 in rows and columns. The distance a2 between two adjacent dots 220 in the light incident direction is 45 μm, and the distance b2 between two adjacent dots 220 perpendicular to the light incident direction is 50 μm.
In the present embodiment, the depth of the dots 220, the size of the bottom surface 221, the included angle between the backlight surface 223 and the bottom surface 221, and the size of the intersection line of the curved surface transition surface 224 and the plane perpendicular to the surface of the plate body 210 along the light incident direction are designed to be the above-mentioned sizes, so that the total reflection condition of the light energy can be satisfied, thereby improving the light energy utilization rate, and further improving the brightness, the quality of the light guide plate 200, and the shielding performance of the assembly.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A light guide plate is characterized by comprising a plate body, wherein a plurality of mesh points distributed on the plate body are arranged on the plate body, the mesh points are cylindrical, the cylindrical mesh points comprise bottom surfaces, light incident surfaces, backlight surfaces and curved surface transition surfaces, the bottom surfaces are coplanar with the surface of the plate body, the light incident surfaces and the backlight surfaces are respectively connected to two sides of the bottom surfaces, and the curved surface transition surfaces are positioned between the light incident surfaces and the backlight surfaces;
the depth of the mesh point is 5-25 μm; the length of the bottom surface in the light incidence direction is 20-100 mu m, and the width of the bottom surface in the direction perpendicular to the light incidence direction is 10-50 mu m; the included angle between the backlight surface and the bottom surface is 55-85 degrees; the intersection line of the curved surface transition surface and a plane perpendicular to the surface of the plate body along the light incidence direction is an arc, and the radius of the arc is 1-5 mu m.
2. The light guide plate according to claim 1, wherein the depth of the mesh point is 10 μm to 20 μm; the length of the bottom surface in the light incidence direction is 40-80 μm, and the width of the bottom surface in the direction perpendicular to the light incidence direction is 30-40 μm; the included angle between the backlight surface and the bottom surface is 60-80 degrees.
3. The light guide plate according to claim 1, wherein the bottom surface is rectangular in shape.
4. The light guide plate according to claim 1, wherein the bottom surface has a shape formed by connecting two straight lines and two curved lines end to end, and the straight lines and the curved lines are spaced apart from each other;
the curves are circular arcs, the bending directions of the two curves are the same, and the radius of each circular arc is 40-100 micrometers.
5. The light guide plate according to claim 1, wherein an intersection line of the light incident surface and a plane perpendicular to the surface of the plate body along the light incident direction is a straight line.
6. The light guide plate according to claim 1, wherein an intersection line of the light incident surface and a plane perpendicular to the surface of the plate body in the light incident direction is a curve, and the length of the curve is 20 μm to 120 μm.
7. The light guide plate according to claim 1, wherein an intersection line of the backlight surface and a plane perpendicular to the surface of the plate body in the light incident direction is a straight line.
8. The light guide plate according to claim 1, wherein an intersection of the backlight surface and a plane perpendicular to the surface of the plate body in the light incident direction is a curve, and the length of the curve is 1 μm to 12 μm.
9. The light guide plate according to any one of claims 1 to 8, wherein the plurality of dots are arranged on the plate body in rows and columns.
10. The light guide plate according to claim 9, wherein the distance between two adjacent dots in the light incident direction is 10 μm to 200 μm, and the distance between two adjacent dots in the direction perpendicular to the light incident direction is 10 μm to 200 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121263835.8U CN216160867U (en) | 2021-06-07 | 2021-06-07 | Light guide plate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121263835.8U CN216160867U (en) | 2021-06-07 | 2021-06-07 | Light guide plate |
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| Publication Number | Publication Date |
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| CN216160867U true CN216160867U (en) | 2022-04-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202121263835.8U Active CN216160867U (en) | 2021-06-07 | 2021-06-07 | Light guide plate |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115793133A (en) * | 2023-02-09 | 2023-03-14 | 苏州天禄光科技股份有限公司 | Side-in light guide plate with obliquely-cut cylindrical mesh points and backlight module |
-
2021
- 2021-06-07 CN CN202121263835.8U patent/CN216160867U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115793133A (en) * | 2023-02-09 | 2023-03-14 | 苏州天禄光科技股份有限公司 | Side-in light guide plate with obliquely-cut cylindrical mesh points and backlight module |
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