Light diffusion plate

Abstract

The light diffusion plate comprises a diffusion plate body, one side, close to a light source, of the diffusion plate body is a light inlet surface, and one side, far away from the light source, of the diffusion plate body is a light outlet surface; the light diffusion layers are equally printed on the light incident surface, and light transmitting gaps are formed between the light diffusion layers; the microstructure is arranged at the light emitting surface; the microstructure is arranged on the light-out surface, the light diffusion layers are printed on the light-in surface, and the light-transmitting gaps are further formed between the light diffusion layers, so that light loss is reduced, and the uniformity of light diffusion is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display, in particular to a light diffusion plate. Background Art

[0002] In the light diffuser, the light source emits light, which diffuses when passing through the light diffuser.

[0003] Conventional light diffusers have two diffusion methods:

[0004] 1. Add a diffusing agent to the diffuser body or print milky white light diffusing ink on the light incident surface to form a light diffusing layer. This setting method has a uniform diffusion effect, but part of the light is diffused through the diffusing agent or light diffusing ink (light diffusing layer), and the other part of the light is reflected by the diffusing agent or light diffusing ink, resulting in a large loss of light;

[0005] 2. Diffusion through structure means setting a microstructure on the light-emitting surface of the diffuser body. The disadvantage of this setting method is that the diffusion effect is uneven and the difference between light and dark is large. The advantage is that the light loss is small, the light diffusion direction is controllable, the brightness is relatively high, and the light emission direction is controllable;

[0006] In summary, how to reduce light loss on the light diffuser and improve the uniformity of diffusion has become an urgent problem that researchers in this field need to solve. Utility Model Content

[0007] The technical problem to be solved by the utility model is: how to reduce light loss and improve the uniformity of diffusion. To solve the above technical problems, the technical solution adopted by the utility model is:

[0008] The utility model is a light diffusion plate, comprising: a diffusion plate body, the side of which close to the light source is a light incident surface, and the side of which far from the light source is a light emitting surface; light diffusion layers, which are equally printed on the light incident surface, and light-transmitting gaps are formed between the light diffusion layers; and microstructures, which are arranged on the light emitting surface;

[0009] In this scheme, the light diffusion layer and the microstructure are structured, the microstructure is arranged at the light exiting surface, the light diffusion layer is printed on the light incident surface, but not all of it is printed on the light incident surface, and a light-transmitting gap is formed between the light diffusion layers, and the light-transmitting gap must be arranged; in this way, when light is diffused, part of the light enters the diffuser plate body from the light diffusion layer, and the remaining part enters the diffuser plate body from the light-transmitting gap, which can reduce light loss compared to the light entering the diffuser plate body from the light diffusion layer;

[0010] When straight light is refracted and reflected when passing through the microstructure, the refracted light is emitted from the light emitting surface, and the reflected light is reflected to the light diffusion layer for secondary reflection. This part of the light is reflected by the light diffusion layer, and the diffusion effect is uniform, thereby improving the uniformity of the diffused light.

[0011] In order to illustrate the specific structure of the microstructure, the utility model adopts the microstructure as a convex lens structure or a concave lens structure; the microstructure can be set as a cylindrical lens or a quadrangular pyramid lens or a hexagonal pyramid lens structure;

[0012] That is, it can be set as a cylindrical concave lens or a cylindrical convex lens or a quadrangular pyramid concave lens or a quadrangular pyramid convex lens or a hexagonal pyramid convex lens or a hexagonal pyramid concave lens.

[0013] In order to illustrate the specific structure of the light diffusion layer and the light-transmitting gap, the utility model adopts the light diffusion layer as a first strip structure; the light-transmitting gap of the second strip structure is formed between two of the first strip structures;

[0014] Or the light diffusion layer is a first rectangular structure; a plurality of light diffusion layers form light-transmitting gaps of a second rectangular structure;

[0015] Or the light diffusion layer is a circular structure; a plurality of light diffusion layers form a light-transmitting gap with a star-shaped structure having four sides, each side being a quarter of a circular arc.

[0016] In this scheme, three structures are disclosed for the microstructure, and four structures are disclosed for the light diffusion layer and the light-transmitting gap;

[0017] The microstructure can adopt any structure, the light diffusion layer can adopt any structure, and the two structures can be combined arbitrarily to form the light diffusion plate in this solution.

[0018] Beneficial effects of the utility model: The utility model is a light diffusion plate, the microstructure is arranged on the light emitting surface, the light diffusion layer is printed on the light incident surface, and a light-transmitting gap is formed between the light diffusion layers.

[0019] It reduces light loss and improves the uniformity of light diffusion. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0021] Figure 1 This is a structural schematic diagram of the convex lens structure diffusion plate body of the utility model;

[0022] Figure 2 This is a structural schematic diagram of another convex lens structure diffusion plate body of the utility model;

[0023] Figure 3 is a structural schematic diagram of light incident surface printing embodiment 1 and an enlarged view of position Ⅰ;

[0024] Figure 4 is a structural schematic diagram of light incident surface printing embodiment 2 and an enlarged view of position II;

[0025] Figure 5 is a structural schematic diagram of light incident surface printing embodiment 3 and an enlarged view of location III;

[0026] Figure 6 is a structural schematic diagram of light incident surface printing embodiment 4 and an enlarged view of position IV;

[0027] Figure 7 This is a structural schematic diagram of the concave lens structure diffusion plate body of the utility model;

[0028] In the figure: 1-diffuser plate body, 2-light source, 3-light diffusion layer, 31-first strip structure, 32-second strip structure, 33-first rectangular structure, 34-second rectangular structure, 35-hexagonal structure, 36-triangular structure, 37-circular structure, 38-star structure, 4-light-transmitting gap, 51-cylindrical lens, 52-quadrangular pyramid lens, 53-hexagonal pyramid lens, 6-refracted light, 7-reflected light, 8-scattered light, 11-light incident surface, 12-light exit surface. DETAILED DESCRIPTION

[0029] Now the utility model is further described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, which only illustrate the basic structure of the utility model in a schematic manner, and therefore only show the components related to the utility model.

[0030] like Figure 1-2 As shown, the utility model is a light diffuser plate, comprising: a diffuser plate body 1, a side of which close to a light source 2 is a light incident surface 11, and a side of which far from the light source is a light emitting surface 12; light diffusion layers 3, which are equally printed on the light incident surface 11, and light-transmitting gaps 4 are formed between the light diffusion layers 3; and microstructures, which are arranged at the light emitting surface 12;

[0031] In this scheme, the light diffusion layer and the microstructure are structured, the microstructure is arranged at the light exiting surface, the light diffusion layer is printed on the light incident surface, but not all of it is printed on the light incident surface, and a light-transmitting gap is formed between the light diffusion layers, and the light-transmitting gap must be arranged; in this way, when light is diffused, part of the light enters the diffuser plate body from the light diffusion layer, and the remaining part enters the diffuser plate body from the light-transmitting gap, which can reduce light loss compared to the light entering the diffuser plate body from the light diffusion layer;

[0032] When light is refracted and reflected through the microstructure, the refracted light 6 is emitted from the light emitting surface 12, and the reflected light 7 is reflected to the light diffusion layer 3, and is reflected twice to form scattered light 8. This part of the light is reflected by the light diffusion layer 3, and the diffusion effect is uniform, thereby improving the uniformity of the diffused light.

[0033] like Figure 1-27, in order to illustrate the specific structure of the microstructure, the utility model adopts the microstructure as a convex lens structure or a concave lens structure; the microstructure can be set as a cylindrical lens 51 or a quadrangular pyramid lens 52 or a hexagonal pyramid lens 53 structure;

[0034] like Figure 1-2 As shown in , 7, the microstructure can be set as a cylindrical concave lens or a cylindrical convex lens or a quadrangular pyramid concave lens or a quadrangular pyramid convex lens or a hexagonal pyramid convex lens or a hexagonal pyramid concave lens.

[0035] Example 1

[0036] like Figure 3 As shown, in order to illustrate the specific structure of the light diffusion layer and the light-transmitting gap, the utility model adopts the light diffusion layer 3 as a first strip structure 31 ; the light-transmitting gap 4 with a second strip structure 32 is formed between two of the first strip structures 31 .

[0037] Example 2

[0038] like Figure 4 As shown, the light diffusion layer 3 is a first rectangular structure 33 ; and the light-transmitting gaps 4 of a second rectangular structure 34 are formed between the plurality of light diffusion layers 3 .

[0039] Example 3

[0040] like Figure 5 As shown, the light diffusion layer 3 is a hexagonal structure 35 ; and the light-transmitting gaps 4 with a triangular structure 36 are formed between the plurality of light diffusion layers 3 .

[0041] Example 4

[0042] like Figure 6 As shown, the light diffusion layer 3 is a circular structure 37; a plurality of light diffusion layers 3 form light-transmitting gaps 4 with a star-shaped structure 38 having four sides, each side being a quarter of a circular arc.

[0043] In this scheme, three structures are disclosed for the microstructure, and four structures are disclosed for the light diffusion layer and the light-transmitting gap;

[0044] The microstructure can adopt any structure, the light diffusion layer can adopt any structure, the two structures can be arranged in parallel up and down, or the light diffusion layer and the microstructure can be arranged obliquely, and any combination can constitute the light diffusion plate in this solution.

[0045] Based on the above ideal embodiments of the utility model, the relevant staff can make various changes and modifications without departing from the technical concept of the utility model through the above description. The technical scope of the utility model is not limited to the content of the specification, and its technical scope must be determined according to the scope of the claims.

Claims

1. A light diffuser plate, characterized in that: include: The diffuser body has a side close to the light source as a light incident surface and a side away from the light source as a light emitting surface; A light diffusion layer, which is equally printed on the light incident surface, and a light-transmitting gap is formed between the light diffusion layers; A microstructure is arranged on the light emitting surface.

2. The light diffuser plate according to claim 1, characterized in that: The microstructure is a convex lens structure or a concave lens structure.

3. The light diffuser plate according to claim 2, characterized in that: The microstructure is a cylindrical lens, a quadrangular pyramid lens or a hexagonal pyramid lens structure.

4. The light diffuser plate according to claim 1, characterized in that: The light diffusion layer is a first strip-shaped structure; The light-transmitting gap of the second strip structure is formed between the two first strip structures.

5. The light diffuser plate according to claim 1, characterized in that: The light diffusion layer is a first rectangular structure; The light-transmitting gaps of the second rectangular structure are formed between the plurality of light diffusion layers.

6. The light diffuser plate according to claim 1, characterized in that: The light diffusion layer has a hexagonal structure; The light-transmitting gaps of a triangular structure are formed between the plurality of light diffusion layers.

7. The light diffuser plate according to claim 1, characterized in that: The light diffusion layer is a circular structure; A light-transmitting gap having a star-shaped structure with four sides and each side being a quarter of a circular arc is formed between the plurality of light diffusion layers.

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