Light guide plate of single-sided hot pressing

Abstract

The utility model discloses a single -sided hot press's light guide plate belongs to light guide plate technical field, wherein including light guide plate body, light guide plate body, the light guide plate body has the first light domain face and the second light domain face of opposite setting, be provided with the hot press forming and densely cover in the multiple volcanic crater structure of second light domain face on the second light domain face, the cross section of volcanic crater structure is concave -convex type, and the volcanic crater structure includes hot press groove no.

Description

Technical Field

[0001] This utility model belongs to the field of light guide plate technology, specifically relating to a single-sided hot-pressed light guide plate. Background Technology

[0002] As a core component of the backlight module, the light guide plate transforms the light emitted by point or line light sources into surface light sources, and is widely used in displays, lighting equipment and other fields.

[0003] Existing light guide plates mostly employ single-layer or multi-layer structures. Among them, single-layer light guide plates are widely used due to their simple structure and low cost. However, the optical domain surface of existing single-layer light guide plates often adopts a single microstructure design, resulting in problems such as low light refraction and reflection efficiency, poor light uniformity, and insufficient brightness. Therefore, this phenomenon has become a problem that urgently needs to be solved by those in the field. Utility Model Content

[0004] The purpose of this invention is to provide a single-sided hot-pressed light guide plate to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution: a single-sided hot-pressed light guide plate, including a light guide plate body, the light guide plate body having a first light domain surface and a second light domain surface arranged opposite to each other, the second light domain surface being provided with a hot-pressed crater structure densely distributed on the second light domain surface, the crater structure including a first hot-pressed groove, a second hot-pressed groove and a protruding post, the protruding post being disposed in the center of the crater structure, the first hot-pressed groove being an annular groove disposed on the outer ring of the protruding post, the second hot-pressed groove being located in the center of the protruding post, and the outer circle of the first hot-pressed groove forming an overflow edge on the second light domain surface.

[0006] The present invention further describes that the diameter of the protruding post is 20-40μm and the height is 3-5μm, the diameter of the annular groove is 50-60μm and the depth is 3-4μm, and the depth of the second hot-pressing groove is 2-3μm.

[0007] This invention further explains that the crater structures near the light source on the second light domain surface are sparsely distributed, while the density of the crater structures away from the light source gradually increases. The total area of ​​the crater structures accounts for 3% to 25% of the area of ​​the second light domain surface. The crater structures can effectively reflect and slowly scatter light.

[0008] This invention further explains that multiple microstructures are arranged side by side on the first optical domain surface. The microstructures are concave-convex semicircles and are evenly distributed on the first optical domain surface, presenting a regular wave shape.

[0009] The present invention further explains that the depth of the microstructure is 10-50 μm, and the cross-section of the microstructure is perpendicular to the incident light.

[0010] The present invention further explains that the light guide plate body is provided with a light-inlet surface, and the incident light emitted by the light source enters the light guide plate body from the light-inlet surface.

[0011] Compared with the prior art, the beneficial effects achieved by this utility model are as follows: This utility model, by setting a crater structure, can further reflect and homogenize light, reduce light loss, and effectively reflect and slowly scatter light; by setting a gradient distribution of the crater structure, the crater structure near the light source is dense, which can suppress the concentration of strong light and avoid local glare, while the crater structure far from the light source is sparse, which can retain light energy and compensate for the brightness of the tail. Attached Figure Description

[0012] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is an enlarged schematic diagram of the crater structure of this utility model; Figure 3 This is a schematic diagram of the second optical domain surface of this utility model; Figure 4 This is the utility model Figure 1 AA section diagram; In the figure: 1. Light guide plate body; 2. First light domain surface; 3. Second light domain surface; 4. Microstructure; 5. Crater structure; 6. Light-entering surface; 7. Hot pressing groove one; 8. Hot pressing groove two; 9. Protruding column; 10. Overflow edge. Detailed Implementation

[0013] The following detailed, non-limiting description of the present invention, in conjunction with preferred embodiments and accompanying drawings, is provided. Obviously, the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0014] Please see Figure 1-4 The present invention provides a technical solution: a single-sided hot-pressed light guide plate, including a light guide plate body 1, the light guide plate body 1 having a first light domain surface 2 and a second light domain surface 3 arranged opposite to each other, and a plurality of hot-pressed crater structures 5 being provided on the second light domain surface 3, the cross-section of the crater structure 5 being concave and convex.

[0015] The crater structure 5 includes a first hot-pressing groove 7, a second hot-pressing groove 8, and a protruding column 9. The protruding column 9 is located in the center of the crater structure 5. The diameter of the protruding column 9 is 20-40 μm and the height is 3-5 μm. The first hot-pressing groove 7 is an annular groove located on the outer ring of the protruding column 9. The diameter of the annular groove is 50-60 μm and the depth is 3-4 μm. The second hot-pressing groove 8 is located in the center of the protruding column 9. The depth of the second hot-pressing groove 8 is 2-3 μm. The outer circle of the first hot-pressing groove 7 forms an overflow edge 10 on the second optical domain surface 3.

[0016] On the second light domain surface 3, the crater structures 5 near the light source are sparsely distributed, while the density of the crater structures 5 away from the light source gradually increases. The total area of ​​the crater structures 5 accounts for 3% to 25% of the area of ​​the second light domain surface 3. The crater structures 5 can effectively reflect and slowly scatter light.

[0017] Multiple microstructures 4 are arranged side by side on the first optical domain surface 2. The microstructures 4 are concave and convex semicircles and are evenly distributed on the first optical domain surface 2, presenting a regular wave shape.

[0018] The depth of microstructure 4 is 10-50 μm, and the cross-section of microstructure 4 is perpendicular to the incident light.

[0019] The light guide plate body 1 is provided with a light-inlet surface 6, and the incident light emitted by the light source enters the light guide plate body 1 through the light-inlet surface 6.

[0020] Working principle: The incident light emitted by the light source enters the light guide plate body 1 from the side of the light-inlet surface 6. After entering the light guide plate body 1, the light propagates along the length direction. During the propagation process, when the light comes into contact with the first light domain surface 2, the uniformly distributed semi-elliptical microstructures 4 first refract the light. At the same time, the sparse crater structure 5 near the light source breaks the total internal reflection of strong light and avoids glare. The gradually denser crater structure 5 far from the light source reduces light loss and compensates for light intensity attenuation.

[0021] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A single-sided hot-pressed light guide plate, comprising a light guide plate body (1), characterized in that: The light guide plate body (1) has a first light domain surface (2) and a second light domain surface (3) arranged opposite to each other. The second light domain surface (3) is provided with a volcano structure (5) formed by hot pressing and densely distributed on the second light domain surface (3). The volcano structure (5) includes a hot pressing groove one (7), a hot pressing groove two (8) and a protrusion (9). The protrusion (9) is located in the center of the volcano structure (5). The hot pressing groove one (7) is an annular groove and is located on the outer ring of the protrusion (9). The hot pressing groove two (8) is located in the center of the protrusion (9). The outer circle of the hot pressing groove one (7) forms an overflow edge (10) on the second light domain surface (3).

2. The light guide plate with single-sided hot pressing according to claim 1, characterized in that: The diameter of the protrusion (9) is 20-40 μm and the height is 3-5 μm. The diameter of the annular groove is 50-60 μm and the depth is 3-4 μm. The depth of the hot pressing groove (8) is 2-3 μm.

3. The light guide plate with single-sided hot pressing according to claim 2, characterized in that: The crater structures (5) near the light source are sparsely distributed on the second light field surface (3), while the density of the crater structures (5) away from the light source gradually increases. The total area of ​​the crater structures (5) accounts for 3% to 25% of the area of ​​the second light field surface (3).

4. A single-sided hot-pressed light guide plate according to claim 3, characterized in that: Multiple microstructures (4) are arranged side by side on the first optical domain surface (2). The microstructures (4) are concave-convex semicircles. The microstructures (4) are evenly distributed on the first optical domain surface (2) and present a regular wave shape.

5. A single-sided hot-pressed light guide plate according to claim 4, characterized in that: The diameter of the cross-section of the microstructure (4) is 10-50 μm, and the cross-section of the microstructure (4) is perpendicular to the incident light.

6. A single-sided hot-pressed light guide plate according to claim 5, characterized in that: The light guide plate body (1) is provided with a light-inlet surface (6), and the incident light emitted by the light source enters the light guide plate body (1) from the light-inlet surface (6).

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