CN217766903U - Light guide plate - Google Patents

Abstract

The application relates to a light guide plate, which comprises a plate body, a plurality of light guide mesh points are arranged on a light incidence surface of the plate body, each light guide mesh point comprises a first light guide part and a second light guide part, and the first light guide part is connected with the second light guide part. The light guide dots are formed by sinking the surface of the plate body. The first light guide part and the second light guide part are both arc-shaped surfaces, and the edges of the first light guide part and the second light guide part are spliced. This application has the effect that promotes the luminance of light guide plate.

Description

Light guide plate

Technical Field

The present application relates to the field of optical elements, and more particularly, to a light guide plate.

Background

Currently, liquid crystal display devices have been widely used in various electronic products as display components of electronic devices, and backlight modules are an important component of liquid crystal display devices. The LED lamp strip of the backlight module is arranged at the backlight edge at the rear side of the light guide plate, and light rays emitted by the LED lamp strip enter the light guide plate from the light incident surface at one side of the light guide plate. The light guide plate is provided with the dots, when light rays strike the dots, reflected light can be diffused towards all angles and then is emitted from the light emitting surface of the light guide plate, and the light guide plate can uniformly emit light through the design arrangement of the dots with different densities and sizes.

The mesh points on the existing light guide plate are generally round or oval mesh points, light rays emitted by the LED lamp bars are diffused all around, a large amount of light energy is wasted, and the brightness of the light guide plate is low.

SUMMERY OF THE UTILITY MODEL

In order to improve the luminance of the light guide plate, the application provides a light guide plate.

The application provides a light guide plate, adopts following technical scheme:

a light guide plate comprises a plate body, wherein a plurality of light guide dots are arranged on a light incident surface of the plate body, each light guide dot comprises a first light guide part and a second light guide part, and the first light guide part is connected with the second light guide part.

Through adopting above-mentioned technical scheme, first leaded light portion and second leaded light portion refract the light that the light source sent to adjust the refraction angle of light, guide light is closed, reduces the diffusion of light refraction process, reduces the loss of light transmission in-process energy, promotes the brilliance of light guide plate.

In a specific possible embodiment, the light guide dots are formed by recessing the surface of the plate body.

Through adopting above-mentioned technical scheme, sunken leaded light site can enlarge the area that shines of light on the light guide plate income plain noodles, promotes the absorption effect to light, promotes the brilliance of light guide plate.

In a specific embodiment, the first light guiding portion and the second light guiding portion are both arc-shaped surfaces, and edges of the first light guiding portion and the second light guiding portion are spliced.

By adopting the technical scheme, the irradiation direction of the light is controlled by utilizing the arc surface, the diffusion angle of the light is reduced, the irradiation area of the light is converged, the loss of light energy is reduced, and the luminance of the light guide plate is improved.

In a specific embodiment, a radius of a projection of the first light guiding portion on the light incident surface of the plate is R1, and a radius of a projection of the second light guiding portion on the light incident surface of the plate is R2, where R1 ≠ R2 is satisfied.

Through adopting above-mentioned technical scheme, the different diameters of first leaded light portion and second leaded light portion for first leaded light portion and second leaded light portion concatenation back, leaded light site is asymmetric structure, helps breaking up the diffuse reflection of light, and guides light to going out the plain noodles, conveniently concentrates light, promotes the luminance of light guide plate.

In a specific implementation, the light incident surface of the plate body is provided with supporting dots, and the supporting dots are formed by protruding the surface of the plate body.

Through adopting above-mentioned technical scheme, accomplish the installation back at the light guide plate, there is the clearance between light guide plate and the reflector plate, makes things convenient for light to shine to the edge of light guide plate, promotes the brilliance at light guide plate edge and corner.

In a specific implementation, a plurality of light guide posts are arranged on the light-emitting surface of the plate body.

Through adopting above-mentioned technical scheme, the light that jets out in the leaded light post goes out the plain noodles to the light guide plate leads, conveniently concentrates light, promotes the light efficiency and the imaging quality of light guide plate.

In a specific implementation scheme, a light-homogenizing block is arranged on the light-emitting surface of the plate body, and the light-homogenizing block is in a triangular pyramid shape.

Through adopting above-mentioned technical scheme, carry out even diffusion to the light that sends on the light guide plate play plain noodles for light shines more evenly, promotes the whole quality of shining of light guide plate.

In a specific embodiment, a plurality of the light guide dots are arranged in a staggered manner.

By adopting the technical scheme, the light guide mesh can absorb light more comprehensively, the absorption area of the light is enlarged, and the luminance of the light guide plate is promoted.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the first light guide part and the second light guide part guide the light emitted by the light source to be converged, so that the diffusion of the light in the refraction process is reduced, the energy loss in the light transmission process is reduced, and the luminance of the light guide plate is improved;

2. the light guide dots are arranged in a staggered manner, so that the light guide plate can more comprehensively absorb light emitted by the light source, and the luminance of the light guide plate is favorably improved.

Drawings

Fig. 1 is a schematic view of a plate light incident surface structure in embodiment 1.

Fig. 2 is a schematic view of the internal structure of the plate body 1 in embodiment 1.

Fig. 3 is a schematic view of a projection of a light guide dot on a light incident surface of a plate body.

Fig. 4 is a schematic diagram of a light-emitting surface structure of the plate in embodiment 1.

Fig. 5 is a schematic diagram of a light-emitting surface structure of the plate in embodiment 2.

Description of the reference numerals: 1. a plate body; 2. light guide dots; 21. a first light guide part; 22. a second light guide part; 3. supporting the mesh points; 4. a light guide pillar; 5. and (6) a light homogenizing block.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

The first embodiment is as follows:

referring to fig. 1 and 2, the light guide plate includes a plate body 1, a plurality of light guide dots 2 are disposed on a light incident surface of the plate body 1, and the light guide dots 2 are recessed from the light incident surface of the plate body 1. In some other embodiments, the light guide dots 2 may also be obtained by hot pressing or the like. Each light guide dot 2 includes a first light guide portion 21 and a second light guide portion 22, the first light guide portion 21 and the second light guide portion 22 are both arc-shaped surfaces, and ends of the first light guide portion 21 and the second light guide portion 22, which are far away from the light incident surface of the plate body 1, are staggered. Under the action of the first light guide part 21 and the second light guide part 22, the light rays of the light source irradiated on the light incident surface of the light guide plate are converged at a light ray diffusion angle and diffused towards a specific direction, so that the loss of light energy in the light rays is reduced, and the luminance of the light guide plate under the light is improved.

Referring to fig. 2 and 3, the projection of the first light guide part 21 on the light incident surface of the plate 1 is an arc line with a radius of R1, the projection of the second light guide part 22 on the light incident surface of the plate 1 is an arc line with a radius of R2, and in this embodiment, R1< R2. First light guide unit 21 is disposed on a side of second light guide unit 22 closer to the light source. In some other embodiments, it may also be that R1> R2. The first light guide part 21 and the second light guide part 22 are arranged to be different arc-shaped surfaces, so that the refraction of light rays is conveniently controlled, more light rays are emitted from the light emitting surface, the accuracy of the light guide plate for guiding the light rays is improved, and the luminance of the light guide plate is favorably improved.

Referring to fig. 1 and 2, light is diffusely reflected in the light guide plate, that is, the propagation path of light in the light guide plate is not fixed, and the light guide dots 2 are arranged in a staggered manner, so that the refraction probability of the light guide dots 2 on light can be improved, and the luminance of the light guide plate can be further improved.

Referring to fig. 1 and 2, a plurality of supporting mesh points 3 are integrally formed on the light incident surface of the plate body 1, and the plurality of supporting mesh points 3 are all obtained by protruding the surface of the plate body 1. After the plate body 1 is arranged, the plate body 1 has a gap between the reflection sheet arranged on one side of the light incident surface of the plate body 1 under the action of the supporting mesh points 3, so that static electricity between the plate body 1 and the reflection sheet is reduced, interference fringes caused by the static electricity are reduced, and the light efficiency of the light guide plate is improved. Meanwhile, the path of light transmitted to the light guide plate is prolonged, the light can be conveniently irradiated to the edge of the light guide plate, and the brightness of the edge and the corner of the light guide plate is improved.

Referring to fig. 4, integrated into one piece has many leaded light posts 4 on the play plain noodles of plate body 1, and many leaded light posts 4 are formed by plate body 1 surface protrusion, and many leaded light posts 4 set up side by side. The cross-section of the light guide posts 4 is triangular, so that a gap exists between the adjacent light guide posts 4. The light guide column 4 guides the light emitted from the light emitting surface of the light guide plate, so that the irradiation precision of the light is further improved, the light is conveniently concentrated, and the luminance of the light guide plate is improved. Meanwhile, light rays are conveniently concentrated, and the lighting effect and the imaging quality of the light guide plate are improved.

The implementation principle of the embodiment 1 of the application is as follows: the light emitted by the light source irradiates on the light guide mesh points 2, the first light guide part 21 and the second light guide part 22 adjust and guide the refraction angle of the light, the diffusion of the light is reduced, the light is guided to the same direction by the light guide mesh points 2, the loss of light energy in the light refraction process is reduced, and the brightness of the light guide plate is improved.

Example 2:

referring to fig. 5, embodiment 2 differs from embodiment 1 in that: the light-emitting surface of the plate body 1 is integrally formed with a light-homogenizing block 5, and the light-homogenizing block 5 is formed by protruding the surface of the plate body 1. In this embodiment, the light uniformizing block 5 is a regular triangular pyramid, and in some other embodiments, it may also be a triangular pyramid with other shapes.

The light emitted from the light-emitting surface of the light guide plate is uniformly diffused all around by the light homogenizing block 5, so that the light emitted by the light guide plate is more uniform, and the irradiation effect of the light guide plate is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims (8)

1. A light guide plate, characterized in that: the light guide plate comprises a plate body (1), wherein a plurality of light guide mesh points (2) are arranged on a light incident surface of the plate body (1), each light guide mesh point (2) comprises a first light guide part (21) and a second light guide part (22), and the first light guide parts (21) are connected with the second light guide parts (22).

2. The light guide plate according to claim 1, wherein: the light guide dots (2) are formed by sinking the surface of the plate body (1).

3. The light guide plate according to claim 2, wherein: the first light guide part (21) and the second light guide part (22) are both arc-shaped surfaces, and edges of the first light guide part (21) and the second light guide part (22) are spliced.

4. A light guide plate according to claim 3, wherein: the radius of the projection of the first light guide part (21) on the light incident surface of the plate body (1) is R1, the radius of the projection of the second light guide part (22) on the light incident surface of the plate body (1) is R2, and R1 ≠ R2 is satisfied.

5. A light guide plate according to claim 1, wherein: the light incident surface of the plate body (1) is provided with support mesh points (3), and the support mesh points (3) are formed by protruding the surface of the plate body (1).

6. A light guide plate according to claim 1, wherein: the light-emitting surface of the plate body (1) is provided with a plurality of light-guiding columns (4).

7. A light guide plate according to claim 1, wherein: the light-emitting surface of the plate body (1) is provided with a light-homogenizing block (5), and the light-homogenizing block (5) is in a triangular pyramid shape.

8. A light guide plate according to claim 1, wherein: the light guide dots (2) are arranged in a staggered mode.

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