Surface structure of ultrathin light guide plate

Abstract

The utility model relates to a surface structure of an ultrathin light guide plate, which comprises a light guide plate, the light guide plate is in a sheet shape, a groove is arranged on the surface of one side of the light guide plate, the surface structure is characterized in that the groove is arranged in a rectangular array, the shape of the groove is a square trapezoid body, an arc-shaped convex part is arranged at the center of the groove, and the arc-shaped convex part is arranged on the surface of one side of the light guide plate. The thickness of the light guide plate ranges from 0.2 mm to 0.4 mm, and the depth of the groove ranges from 0.005 mm to 0.01 mm. The surface structure of the ultrathin light guide plate is high in structural stability and stable in light transmission.

Description

Technical Field

[0001] The utility model relates to a surface structure of an ultra-thin light guide plate, belonging to the technical field of light guide plates. Background Art

[0002] At present, the light guide plate on the market has stripes on the upper surface and screen printing or laser dotting on the lower surface. Screen printing dots or laser forming concave dots on the lower surface, when the light of the LED lamp installed on the side of the light guide plate is coupled into the light guide plate, and then propagates forward in the light guide plate with the help of total reflection principle, the light encounters dots or concave dots on the lower surface of the light guide plate during the forward propagation process, and the total reflection is destroyed. Part of the light will change the propagation direction and emit from the upper and lower surfaces of the light guide plate. The general liquid crystal display device in the current prior art includes a liquid crystal display panel and a backlight module. Since the liquid crystal display panel itself does not emit light, it needs to rely on the backlight module to provide a lighting source to the liquid crystal display panel. Therefore, the main function of the backlight module is to provide a high-brightness and high-uniformity lighting source. The general backlight module includes a light source, a light guide plate, a diffuser plate and a light collector. The light of the light source is incident on the light guide plate from the side, the diffuser plate evens out the light emitted by the light guide plate, and the light collector is used to increase the brightness of the light to the display panel.

[0003] In the prior art, the main surface microstructure designs of light guide plates include V-groove, dot, and column, but these are not suitable for ultra-thin light guide plates, and have low light output and uneven light propagation. Summary of the invention

[0004] The technical problem to be solved by the utility model is to provide a surface microstructure of an ultra-thin light guide plate with strong structural stability and stable light propagation efficiency.

[0005] The utility model provides a technical solution to solve the above technical problems: a surface structure of an ultra-thin light guide plate, comprising a light guide plate (1), wherein the light guide plate is in sheet form, a surface of one side of the light guide plate is provided with grooves, the grooves are arranged in a rectangular array, the shape of the grooves is a square trapezoid, a circular arc-shaped protrusion is provided at the center of the groove, the thickness of the light guide plate is 0.2 to 0.4 mm, and the depth of the grooves is 0.005 to 0.01 mm.

[0006] Preferably, the ratio of the height of the protrusion to the depth of the groove is 1:2 to 2:3.

[0007] Preferably, the ratio of the diameter of the protrusion to the top width of the groove is 1:3 to 1:2, and the diameter of the protrusion is 0.01 to 0.05 mm.

[0008] Preferably, the bottom angle of the inner side of the groove side is 60 to 80°.

[0009] Preferably, along the length direction of the light guide plate, the spacing between each groove is 0.005 to 0.01 mm.

[0010] Preferably, along the width direction of the light guide plate, the spacing between each groove is 0.005 to 0.01 mm.

[0011] Preferably, the bottom width of the groove is 0.02 to 0.08 mm.

[0012] Preferably, the light guide plate is an acrylic light guide plate.

[0013] Preferably, the light guide plate is a polycarbonate light guide plate.

[0014] The utility model has positive effects: the surface structure of the ultra-thin light guide plate of the utility model has a regularly arranged surface microstructure formed on the light guide surface of the ultra-thin light guide plate, and the depth of the surface microstructure of the ultra-thin light guide plate is not easy to be too deep. The utility model sets an arc-shaped protrusion at the center of the square boss to form a double-set light guide point. When the light hits each light guide point, the reflected light will diffuse to various angles, and then destroy the reflection condition and be emitted from the front of the light guide plate. Through various light guide points of different densities and sizes, the light guide plate can emit light evenly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The surface microstructure of the ultra-thin light guide plate of the present invention is further described below in conjunction with the accompanying drawings.

[0016] Figure 1 This is a schematic diagram of the side structure of the light guide plate of an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the side structure of the groove of an embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the top view of the groove according to an embodiment of the utility model.

[0019] The above-mentioned reference numerals are as follows:

[0020] Light guide plate 1, groove 2, protrusion 3. DETAILED DESCRIPTION Example 1

[0021] See Figures 1 to 3The surface structure of an ultra-thin light guide plate of this embodiment includes a light guide plate 1, which is in the form of a sheet. A surface of one side of the light guide plate 1 is provided with grooves 2, which are arranged in a rectangular array. The shape of the grooves 2 is a square trapezoid. A circular arc-shaped protrusion 3 is provided at the center of the groove 2. The thickness of the light guide plate 1 is 0.2 mm, and the depth of the groove 2 is 0.005 mm. The ratio of the height of the protrusion 3 to the depth of the groove 2 is 1:2, and the height of the protrusion 3 is 0.0025 mm. The ratio of the diameter of the protrusion 3 to the top width of the groove 2 is 1:3, and the diameter of the protrusion 3 is 0.01 mm.

[0022] The bottom angle of the inner side of the groove 2 is 60°. Along the length direction of the light guide plate 1, the spacing between each groove 2 is 0.005 mm. Along the width direction of the light guide plate 1, the spacing between each groove 2 is 0.005 mm.

[0023] The bottom width of the groove 2 is 0.02 mm.

[0024] The light guide plate 1 is an acrylic light guide plate. Example 2

[0025] The surface structure of the ultra-thin light guide plate of this embodiment includes a light guide plate 1, which is in the form of a sheet. A surface of one side of the light guide plate 1 is provided with grooves 2, which are arranged in a rectangular array. The shape of the grooves 2 is a square trapezoid. A circular arc-shaped protrusion 3 is provided at the center of the groove 2. The thickness of the light guide plate 1 is 0.3 mm, and the depth of the groove 2 is 0.006 mm. The ratio of the height of the protrusion 3 to the depth of the groove 2 is 1:2, and the height of the protrusion 3 is 0.003 mm. The ratio of the diameter of the protrusion 3 to the top width of the groove 2 is 2:5, and the diameter of the protrusion 3 is 0.025 mm. The bottom angle of the inner side of the side of the groove 2 is 70°. Along the length direction of the light guide plate 1, the spacing between each groove 2 is 0.0075 mm.

[0026] Along the width direction of the light guide plate 1, the spacing between each groove 2 is 0.0075 mm. The bottom width of the groove 2 is 0.05 mm.

[0027] The light guide plate 1 is an acrylic light guide plate. Example 3

[0028] The surface structure of the ultra-thin light guide plate of this embodiment includes a light guide plate 1, which is in the form of a sheet. A groove 2 is provided on the surface of one side of the light guide plate 1, characterized in that the grooves 2 are arranged in a rectangular array, the shape of the grooves 2 is a square trapezoid, and a circular arc-shaped protrusion 3 is provided at the center of the groove 2. The thickness of the light guide plate 1 is 0.4 mm, and the depth of the groove 2 is 0.01 mm. The ratio of the height of the protrusion 3 to the depth of the groove 2 is 2:3, and the height of the protrusion 3 is 0.00667 mm. The ratio of the diameter of the protrusion 3 to the top width of the groove 2 is 1:2, and the diameter of the protrusion 3 is 0.05 mm. The bottom angle of the inner side of the side of the groove 2 is 80°. Along the length direction of the light guide plate 1, the spacing between each groove 2 is 0.01 mm. Along the width direction of the light guide plate 1, the spacing between each groove 2 is 0.01 mm. The bottom width of the groove 2 is 0.08 mm.

[0029] The light guide plate 1 is a polycarbonate light guide plate.

[0030] Obviously, the above embodiments are merely examples for clearly illustrating the embodiments of the present invention, and are not intended to limit the embodiments of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all the embodiments here. However, these obvious changes or modifications derived from the spirit of the present invention are still within the scope of protection of the present invention.

Claims

1. A surface structure of an ultra-thin light guide plate, comprising a light guide plate (1), wherein the light guide plate (1) is in a sheet shape, and a groove (2) is provided on a surface of one side of the light guide plate (1), characterized in that: The grooves (2) are arranged in a rectangular array, the shape of the grooves (2) is a square trapezoid, a circular arc-shaped protrusion (3) is provided at the center of the grooves (2), the thickness of the light guide plate (1) is 0.2 to 0.4 mm, and the depth of the grooves (2) is 0.005 to 0.01 mm.

2. The surface structure of the ultra-thin light guide plate according to claim 1, characterized in that: The ratio of the height of the protrusion (3) to the depth of the groove (2) is 1:2 to 2:

3.

3. The surface structure of the ultra-thin light guide plate according to claim 1, characterized in that: The ratio of the diameter of the protrusion (3) to the top width of the groove (2) is 1:3 to 1:2, and the diameter of the protrusion (3) is 0.01 to 0.05 mm.

4. The surface structure of the ultra-thin light guide plate according to claim 1, characterized in that: The bottom angle of the inner side of the groove (2) is 60 to 80 degrees.

5. The surface structure of the ultra-thin light guide plate according to claim 1, characterized in that: Along the length direction of the light guide plate (1), the spacing between each groove (2) is 0.005 to 0.01 mm.

6. The surface structure of the ultra-thin light guide plate according to claim 1, characterized in that: Along the width direction of the light guide plate (1), the spacing between each groove (2) is 0.005 to 0.01 mm.

7. The surface structure of the ultra-thin light guide plate according to claim 4, characterized in that: The bottom width of the groove (2) is 0.02 to 0.08 mm.

8. The surface structure of the ultra-thin light guide plate according to claim 1, characterized in that: The light guide plate (1) is an acrylic light guide plate.

9. The surface structure of the ultra-thin light guide plate according to claim 1, characterized in that: The light guide plate (1) is a polycarbonate light guide plate.

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