CN212905553U - Novel light guide plate structure - Google Patents

Abstract

The utility model relates to a novel light guide plate structure, including the light guide plate, be equipped with the site structural plane on the light guide plate, the site structural plane includes a plurality of site units, the side of light guide plate is equipped with into plain noodles, the radius of site unit is certainly the site structural plane is close to the one end of going into the plain noodles and to keeping away from the one end of going into the plain noodles and increase gradually. The utility model discloses a dot unit's size changes according to its and the distance of going into the plain noodles, can effectively improve the degree of consistency of light, and then improves backlight unit's luminance.

Description

Novel light guide plate structure

Technical Field

The utility model relates to a technical field is shaded particularly, relates to a novel light guide plate structure.

Background

The backlight module of the conventional electronic product generally adopts a side light incident structure, wherein a light emitting element (such as an LED lamp bead) of the structure is disposed at one side of a light guide plate, and a light beam emitted by the light emitting element is guided to an upper surface (i.e., a light emitting surface) of the light guide plate by using a side surface (i.e., a light incident surface) of the light guide plate to form a uniform surface light source.

The existing light guide plate is provided with a mesh point structure, when light rays irradiate each mesh point, reflected light can be diffused towards each angle, then the reflection condition is destroyed, and the reflected light is emitted from the front surface of the light guide plate, so that the light rays are uniform. The existing light guide plate usually adopts mesh points with the same size, and the mesh points are irregularly arranged, so that the mesh point structure is easy to cause visual defects such as transverse striations, dark clusters and the like on the surface of the mold core; and the light-emitting efficiency of the mesh points of the existing light guide plate is certain, which is difficult to improve, and the requirement of the screen of the current electronic product on the brightness can not be met.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel light guide plate structure, the size of its site unit changes according to its and the distance of going into the plain noodles, can effectively improve the degree of consistency of light, and then improves backlight unit's luminance.

The utility model provides a novel light guide plate structure, includes the light guide plate, be equipped with the site structural plane on the light guide plate, the site structural plane includes a plurality of site units, the side of light guide plate is equipped with into plain noodles, the radius of site unit certainly the site structural plane is close to the one end of going into the plain noodles and is crescent to the one end of keeping away from the income plain noodles.

Further, the light incident surface is located on one side of the light guide plate, and the radius of the dot unit satisfies the relation:

wherein r1 is the radius of the dot unit closest to the light incident surface, r2 is the radius of the dot unit farthest from the light incident surface, Lx is the length of the light guide plate in the light incident direction, and x is the distance between the dot unit and the light incident surface.

Further, the light incident surface is arranged on two sides of the light guide plate, and the radius of the dot unit satisfies the relation:

wherein r1 is the radius of the dot unit closest to the light incident surface, r2 is the radius of the dot unit farthest from the light incident surface, Lx is the length of the light guide plate in the light incident direction, x is the distance between the dot unit and the light incident surface, and ax is a control variable.

Furthermore, the height of the dot unit is 1 mu-100 mu.

Furthermore, the height of the dot unit is 1 mu-10 mu.

Furthermore, the diameter of the dot unit is 10 mu-1200 mu.

Furthermore, the diameter of the dot unit is 20 mu-500 mu.

Further, the dot units are spherical dots or truncated cone-shaped dots.

Further, the light guide plate is made of PMMA, PC, MS, PS or optical glass.

Compared with the prior art, the beneficial effects of the utility model are that: the light guide plate is provided with the dot structure surface, the dot structure surface is provided with a plurality of dot units, and the radius of the dot units is gradually increased from one end of the dot structure surface close to the light incident surface to one end far away from the light incident surface, so that the uniformity of light is improved, and the uniformity of a picture is better. The radius of the dot unit satisfies the set relational expression, thereby increasing the light-emitting efficiency of the light guide plate and further improving the brightness of the backlight module. The mesh point structure can effectively improve visual defects, reduce phenomena of transverse striations, dark clusters, interference striations and the like, and improve the display effect.

Drawings

Fig. 1 is the structural schematic diagram of the light guide plate of the present invention with one side incident light.

Fig. 2 is the structure diagram of the light guide plate of the present invention.

Fig. 3 is a schematic cross-sectional view of a dot unit of the novel light guide plate structure according to the first embodiment of the present invention.

Fig. 4 is a schematic cross-sectional view of a dot unit of a novel light guide plate structure according to a second embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

Referring to fig. 1 and 2, in a preferred embodiment, the novel light guide plate structure of the present invention mainly includes a light guide plate 1, the light guide plate 1 is a rectangular parallelepiped, and the material of the light guide plate 1 may be PMMA (polymethyl methacrylate), PC (polycarbonate), MS (styrene-methyl methacrylate copolymer), PS (polystyrene), or optical glass. The side surface of the light guide plate 1 is provided with a light incident surface 2, and the light source 6 is arranged opposite to the light incident surface 2. In this embodiment, the upper end surface of the light guide plate 1 is the light emitting surface 3, the lower end surface of the light guide plate 1 is provided with a dot structure surface 4, the dot structure surface 4 includes a plurality of dot units 5, and the radius of the dot units 5 gradually increases from one end of the dot structure surface 4 close to the light incident surface 2 to one end far away from the light incident surface 2.

It should be noted that, in the existing backlight structure, the light source 6 is disposed as a single-side incident light and an opposite-side incident light, the single-side incident light refers to that the light source 6 is disposed on one side of the light guide plate 1, and the light guide plate 1 has a single incident surface 2; the opposite side light incidence finger light sources 6 are oppositely arranged at two sides of the light guide plate 1, and the light guide plate 1 is provided with two light incidence surfaces 2.

Referring to fig. 1, in the single-sided light incident structure, the radius r of the dot unit 5 satisfies the following relation:

where r1 is the radius of the dot unit 5 closest to the light incident surface, r2 is the radius of the dot unit 5 farthest from the light incident surface, Lx is the length of the light guide plate 1 in the light incident direction, and x is the distance between the dot unit 5 and the light incident surface 2.

Referring to fig. 2, in the opposite-side incident light structure, the radius of the dot unit 5 satisfies the relation:

wherein r1 is the radius of the dot unit 5 closest to the light incident surface, r2 is the radius of the dot unit 5 farthest from the light incident surface, Lx is the length of the light guide plate 1 in the light incident direction, x is the distance between the dot unit 5 and the light incident surface 2, and ax is a control variable. It should be noted that, in the actual calculation, the control variable ax may take 2, but is not limited thereto.

The arrangement mode of the dot units 5 meeting the relational expression can improve the uniformity of light rays and ensure better uniformity of pictures on the one hand; on the other hand, the light emitting efficiency of the light guide plate can be increased, and the brightness of the backlight module is further improved.

Referring to fig. 3 and 4, in the first and second embodiments of the present invention, the dot units 5 are spherical dots and circular truncated cone-shaped dots, respectively. The cross section of the spherical lattice point is arc-shaped, and the cross section of the truncated cone-shaped lattice point is isosceles trapezoid. It should be understood that the shape of the dot unit 5 can be set according to actual needs.

It should be noted that the height of the dot unit 5 is preferably 1 μ to 100 μ, and in practical applications, the height of the dot unit 5 may be further preferably 1 μ to 10 μ. The diameter of the dot unit 5 is preferably 10 mu to 1200 mu, and in practical application, the diameter of the dot unit 5 can be further preferably 20 mu to 500 mu. The height and diameter values of the dot units 5 can effectively improve the utilization rate of light rays, and further improve the brightness of the backlight module.

In the description of the present invention, it is to be understood that the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

While the invention has been described in conjunction with the specific embodiments set forth above, it is evident that many alternatives, modifications and variations will be apparent to those skilled in the art in light of the foregoing description. Accordingly, it is intended to embrace all such alternatives, modifications, and variations that fall within the spirit and scope of the appended claims.

Claims (9)

1. The utility model provides a novel light guide plate structure, includes the light guide plate, be equipped with the site structural plane on the light guide plate, the site structural plane includes a plurality of site units, its characterized in that, the side of light guide plate is equipped with into plain noodles, the radius of site unit certainly the site structural plane is close to the one end of going into the plain noodles and to keeping away from the one end of going into the plain noodles and increase gradually.

2. The novel light guide plate structure of claim 1, wherein the light incident surface is located on one side of the light guide plate, and the radius of the dot unit satisfies the following relation:

wherein r1 is the radius of the dot unit closest to the light incident surface, r2 is the radius of the dot unit farthest from the light incident surface, Lx is the length of the light guide plate in the light incident direction, and x is the distance between the dot unit and the light incident surface.

3. The novel light guide plate structure of claim 1, wherein the light incident surface is disposed at two sides of the light guide plate, and the radii of the dot units satisfy the following relation:

wherein r1 is the radius of the dot unit closest to the light incident surface, r2 is the radius of the dot unit farthest from the light incident surface, Lx is the length of the light guide plate in the light incident direction, x is the distance between the dot unit and the light incident surface, and ax is a control variable.

4. The novel light guide plate structure of claim 1, wherein the height of the dot unit is 1 μ to 100 μ.

5. The novel light guide plate structure of claim 4, wherein the height of the dot unit is 1 μ to 10 μ.

6. The novel light guide plate structure of claim 1, wherein the diameter of the dot unit is 10 μ to 1200 μ.

7. The novel light guide plate structure of claim 6, wherein the diameter of the dot unit is 20 μ to 500 μ.

8. The novel light guide plate structure of claim 1, wherein the dot units are spherical dots or truncated cone-shaped dots.

9. The novel light guide plate structure of claim 1, wherein the material of the light guide plate is PMMA, PC, MS, PS or optical glass.

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