Surface microstructure of high-luminous-efficiency light guide plate

Abstract

The utility model relates to a surface microstructure of a high luminous efficiency light guide plate, comprising a light guide plate body, the surface of the light guide plate body is provided with quadrangular pyramid microstructures arranged in a rectangular shape, the quadrangular pyramid microstructures are in a regular quadrangular pyramid shape, and the quadrangular pyramid microstructures are arranged at intervals. The distance between every two adjacent quadrangular pyramid microstructures in the length direction of the light guide plate body ranges from 0.031 mm to 0.032 mm, the distance between every two adjacent quadrangular pyramid microstructures in the width direction of the light guide plate body ranges from 0.0325 mm to 0.0335 mm, the side length of the bottom face of each quadrangular pyramid microstructure ranges from 0.3 mm to 0.35 mm, and the height of each quadrangular pyramid microstructure ranges from 0.1 mm to 0.12 mm. According to the light guide plate with the high light efficiency, one side is provided with the quadrangular pyramid microstructures which are arranged in a rectangular mode, the distance between every two quadrangular pyramid microstructures is close, and the light ray propagation efficiency and intensity can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to a surface microstructure of a light guide plate with high light efficiency, belonging to the technical field of light guide plates. Background Art

[0002] The light guide plate is one of the important components on the display terminal device. On the mobile display terminal, the light guide plate is installed on the side of the light source as the backlight module. After the light source releases the light beam, the light guide plate guides the direction of the light beam to increase the light of the mobile display terminal and then form an image.

[0003] At present, the light guide plates on the market have stripes on the upper surface and screen printing or laser dotting on the lower surface. The dots are screen-printed or the pits are formed by laser. When the light from 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 the principle of total reflection, the light encounters the dots or pits 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 be emitted from the upper and lower surfaces of the light guide plate.

[0004] However, although most light guide plates are provided with microstructures, the gaps between the microstructures are too large, so that dark shadows are formed around the light guide plates, resulting in dark bands and dark stripes when the light guide plates are backlit, and uneven brightness. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a surface microstructure of a high-light-efficiency light guide plate with strong structural stability and stable light propagation efficiency.

[0006] The utility model proposes a technical solution to solve the above-mentioned technical problems: a surface microstructure of a high-light-efficiency light guide plate, comprising a light guide plate body, the surface of the light guide plate body being provided with rectangularly arranged tetrahedral pyramidal microstructures, the tetrahedral pyramidal microstructures being in the shape of a regular tetrahedral pyramid, the tetrahedral pyramidal microstructures being arranged at intervals, the spacing between two adjacent tetrahedral pyramidal microstructures along the length direction of the light guide plate body being 0.031 to 0.032 mm, the spacing between two adjacent tetrahedral pyramidal microstructures along the width direction of the light guide plate body being 0.0325 to 0.0335 mm, the bottom side length of the tetrahedral pyramidal microstructure being 0.3 to 0.35 mm, and the height of the tetrahedral pyramidal microstructure being 0.1 to 0.12 mm.

[0007] Preferably, the height of the quadrangular pyramid microstructure is 0.11 to 0.115 mm.

[0008] Preferably, the spacing between the two adjacent quadrangular pyramid microstructures along the length direction of the light guide plate body is 0.0314 to 0.0317 mm.

[0009] Preferably, the spacing between the two adjacent quadrangular pyramid microstructures along the width direction of the light guide plate body is 0.0326 to 0.0329 mm.

[0010] Preferably, the bottom side length of the quadrangular pyramid microstructure is 0.31 to 0.33 mm.

[0011] Preferably, the light guide plate body is an acrylic light guide plate, a polycarbonate light guide plate or a polyester light guide plate.

[0012] Preferably, the light guide plate body is a rectangular plate.

[0013] The utility model has positive effects: the high light-efficiency light guide plate of the utility model adopts acrylic material, which reduces the specific gravity and material cost, and the high diffusion effect and strength of the light guide plate can be improved by setting a tetrahedral pyramid microstructure, while also ensuring the scratch resistance of the surface of the plate and the uniform optical effect of secondary diffusion, and the rectangular arrangement of the tetrahedral pyramid microstructures and the reduction in the spacing between each tetrahedral pyramid microstructure significantly improve the surrounding brightness and brightness uniformity, and remove the light and dark stripes caused by the excessively large spacing between the microstructures. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The surface microstructure of the high light efficiency light guide plate of the present invention is further described below in conjunction with the accompanying drawings.

[0015] Figure 1 This is a schematic diagram of the side structure of the light guide plate of an embodiment of the utility model;

[0016] Figure 2 It is a schematic diagram of the side structure of a quadrangular micro-cone structure of an embodiment of the utility model;

[0017] Figure 3 It is a schematic diagram of a top view of a four-corner micro-cone structure of an embodiment of the utility model;

[0018] Figure 4 The figure is a schematic top view of the structure of the light guide plate according to the embodiment of the utility model.

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

[0020] Light guide plate body 1, quadrangular pyramid microstructure 2. DETAILED DESCRIPTION Example 1

[0021] The surface microstructure of the high light-efficiency light guide plate of the present embodiment includes a light guide plate body 1. The surface of the light guide plate body 1 is provided with rectangularly arranged tetrahedral pyramidal microstructures 2. The tetrahedral pyramidal microstructures 2 are in the shape of regular tetrahedral pyramids. The tetrahedral pyramidal microstructures 2 are arranged at intervals. The spacing between two adjacent tetrahedral pyramidal microstructures 2 along the length direction of the light guide plate body 1 is 0.031 mm. The spacing between two adjacent tetrahedral pyramidal microstructures 2 along the width direction of the light guide plate body 1 is 0.0325 mm. The bottom side length of the tetrahedral pyramidal microstructure 2 is 0.31 mm. The height of the tetrahedral pyramidal microstructure 2 is 0.1 mm.

[0022] The distance between two adjacent quadrangular pyramid microstructures 2 along the length direction of the light guide plate body 1 is 0.0314 mm.

[0023] The distance between two adjacent quadrangular pyramid microstructures 2 along the width direction of the light guide plate body 1 is 0.0326 mm.

[0024] The side length of the bottom surface of the quadrangular pyramid microstructure 2 is 0.31 mm.

[0025] The light guide plate body 1 is an acrylic light guide plate, a polycarbonate light guide plate or a polyester light guide plate.

[0026] The light guide plate body 1 is a rectangular plate. Example 2

[0027] The surface microstructure of the high light-efficiency light guide plate of the present embodiment includes a light guide plate body 1. The surface of the light guide plate body 1 is provided with rectangularly arranged tetrahedral pyramidal microstructures 2. The tetrahedral pyramidal microstructures 2 are in the shape of regular tetrahedral pyramids. The tetrahedral pyramidal microstructures 2 are arranged at intervals. The spacing between two adjacent tetrahedral pyramidal microstructures 2 along the length direction of the light guide plate body 1 is 0.0315 mm. The spacing between two adjacent tetrahedral pyramidal microstructures 2 along the width direction of the light guide plate body 1 is 0.0328 mm. The bottom side length of the tetrahedral pyramidal microstructure 2 is 0.32 mm. The height of the tetrahedral pyramidal microstructure 2 is 0.11 mm.

[0028] The distance between two adjacent quadrangular pyramid microstructures 2 along the length direction of the light guide plate body 1 is 0.0316 mm.

[0029] The distance between two adjacent quadrangular pyramid microstructures 2 along the width direction of the light guide plate body 1 is 0.0328 mm.

[0030] The light guide plate body 1 is an acrylic light guide plate, a polycarbonate light guide plate or a polyester light guide plate.

[0031] The light guide plate body 1 is a rectangular plate. Example 3

[0032] The surface microstructure of the high light-efficiency light guide plate of the present embodiment includes a light guide plate body 1. The surface of the light guide plate body 1 is provided with rectangularly arranged tetrahedral pyramidal microstructures 2. The tetrahedral pyramidal microstructures 2 are in the shape of regular tetrahedral pyramids. The tetrahedral pyramidal microstructures 2 are arranged at intervals. The spacing between two adjacent tetrahedral pyramidal microstructures 2 along the length direction of the light guide plate body 1 is 0.032 mm. The spacing between two adjacent tetrahedral pyramidal microstructures 2 along the width direction of the light guide plate body 1 is 0.0335 mm. The bottom side length of the tetrahedral pyramidal microstructure 2 is 0.33 mm. The height of the tetrahedral pyramidal microstructure 2 is 0.115 mm.

[0033] The distance between two adjacent quadrangular pyramid microstructures 2 along the length direction of the light guide plate body 1 is 0.0317 mm.

[0034] The distance between two adjacent quadrangular pyramid microstructures 2 along the width direction of the light guide plate body 1 is 0.0329 mm.

[0035] The light guide plate body 1 is an acrylic light guide plate, a polycarbonate light guide plate or a polyester light guide plate.

[0036] The light guide plate body 1 is a rectangular plate.

[0037] 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 microstructure of a high light efficiency light guide plate, comprising a light guide plate body (1), characterized in that: The surface of the light guide plate body (1) is provided with rectangularly arranged tetrahedral pyramid microstructures (2), the tetrahedral pyramid microstructures (2) are in the shape of regular tetrahedral pyramids, the tetrahedral pyramid microstructures (2) are arranged at intervals, the spacing between two adjacent tetrahedral pyramid microstructures (2) along the length direction of the light guide plate body (1) is 0.031 to 0.032 mm, the spacing between two adjacent tetrahedral pyramid microstructures (2) along the width direction of the light guide plate body (1) is 0.0325 to 0.0335 mm, the bottom side length of the tetrahedral pyramid microstructure (2) is 0.3 to 0.35 mm, and the height of the tetrahedral pyramid microstructure (2) is 0.1 to 0.12 mm.

2. The surface microstructure of the high light efficiency light guide plate according to claim 1, characterized in that: The height of the quadrangular pyramid microstructure (2) is 0.11 to 0.115 mm.

3. The surface microstructure of the high light efficiency light guide plate according to claim 1, characterized in that: The spacing between the two adjacent quadrangular pyramid microstructures (2) along the length direction of the light guide plate body (1) is 0.0314 to 0.0317 mm.

4. The surface microstructure of the high light efficiency light guide plate according to claim 1, characterized in that: The spacing between the two adjacent quadrangular pyramid microstructures (2) along the width direction of the light guide plate body (1) is 0.0326 to 0.0329 mm.

5. The surface microstructure of the high light efficiency light guide plate according to claim 1, characterized in that: The bottom side length of the quadrangular pyramid microstructure (2) is 0.31 to 0.33 mm.

6. The surface microstructure of the high light efficiency light guide plate according to any one of claims 1 to 5, characterized in that: The light guide plate body (1) is an acrylic light guide plate, a polycarbonate light guide plate or a polyester light guide plate.

7. The surface microstructure of the high light efficiency light guide plate according to any one of claims 1 to 5, characterized in that: The light guide plate body (1) is a rectangular plate.

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