Light guide plate with composite lattice point structure and uniform light guide

Abstract

The utility model relates to a composite lattice point structure light guide plate with uniform light guide, which comprises a light guide plate body, a light inlet surface, a light outlet surface and a light guide mechanism, and is characterized in that the light guide mechanism is arranged in the light guide plate body and is used for changing an incident line light source into a uniform area light source to be emitted; the light guide plate comprises a light guide plate body, one side face of the light guide plate body is a light inlet face, the back face of the light guide plate body is a light outlet face, the light guide plate further comprises a luminous source mechanism, the luminous source mechanism is used for supplementing light into the light guide plate body, the luminous source mechanism is arranged on one side of the light inlet face, the diameter of hemispherical lattice points ranges from 0.2 mm to 0.5 mm, incident light is subjected to first-time omnidirectional scattering, and the incident light is subjected to second-time omnidirectional scattering. The light directionality is destroyed, the Mie scattering theory is met, spherical protrusions are arranged on the surface, the diameter ranges from 50 micrometers to 200 micrometers, secondary micro-scattering is triggered, a dark area of primary scattering is filled, the mixing effect of Rayleigh scattering and geometrical optics is achieved by controlling the curvature radius of the protrusions, R ranges from 25 micrometers to 100 micrometers, multi-level scattering is formed by the hemispherical base and the spherical protrusions through the composite net points, and the light emitting face is more uniform.

Description

Technical Field

[0001] This utility model relates to the field of light guide plate technology, specifically a light guide plate with a composite dot structure that provides uniform light guidance. Background Technology

[0002] In existing technologies, traditional light guide plates in backlight modules typically use a single dot structure, such as circular or square dots or laser-engraved microstructures, to achieve light diffusion. The single dot structure is prone to uneven brightness on the light-emitting surface, with dark areas or bright spots appearing at the edges.

[0003] For example, the authorized patent document with application number CN202223362215.7 discloses a dot structure for a light guide plate, relating to the field of light guide plates. It includes a light guide plate body, with a first dot area at the bottom of the body, one end of which does not extend to the edge of the body. A first boundary is provided on the first dot area. This invention, by providing a first dot area at the bottom of the light guide plate, and ensuring that the dots in the first dot area do not extend to the edge of the light guide plate, controls the light output of the light guide plate body at the left and right positions of the first boundary, reducing the brightness at that position and thus reducing the brightness at the edge of the light guide plate body, meeting its usage requirements.

[0004] The aforementioned patent has the problem that a single dot structure can easily lead to uneven brightness on the light-emitting surface, with dark areas or bright spots appearing at the edges, resulting in insufficient uniformity. Therefore, we need to provide a light guide plate with a composite dot structure that provides uniform light guidance. Utility Model Content

[0005] The purpose of this invention is to provide a light guide plate with a uniform light guide through a composite dot structure. By using a double scattering structure with composite spherical protrusions on the surface of hemispherical dots, it breaks the limitations of single dot light path distribution, achieves highly uniform conversion from line light source to surface light source, and solves the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a light guide plate with a uniformly distributed composite dot structure, comprising:

[0007] The light guide plate body comprises a light incident surface, a light emitting surface, and a light guiding mechanism. The light guide plate body is internally provided with a light guiding mechanism, which is used to transform the incident line light source into a uniform surface light source for emission. One side of the light guide plate body is the light incident surface, and the back side of the light guide plate body is the light emitting surface.

[0008] It also includes a light source mechanism, which is used to supplement light within the light guide plate body, and the light source mechanism is disposed on one side of the light incident surface.

[0009] Preferably, the light guide mechanism comprises the net dot and the protrusion, the inside of the light guide plate body is arranged with a plurality of hemispherical net dots, and the surface of the plurality of net dots is integrally processed with a plurality of spherical protrusions.

[0010] Preferably, the surface of the light guide plate body is provided with a light shielding layer.

[0011] Preferably, the light emitting source mechanism comprises an alloy guide rail, an LED lamp strip and a sticking layer, the alloy guide rail comprises an outward expansion part and a sticking part, the outward expansion part is used for mounting the light guide plate body, the sticking part is used for placing the LED lamp strip, one side of the LED lamp strip is provided with the sticking layer, and the sticking layer is mounted in the sticking part.

[0012] Preferably, the outward expansion part of the surface of the alloy guide rail is provided with three hole parts, the inside of the three hole parts is movably sleeved with mounting bolts, the light entrance surface of the light guide plate body is integrally processed with three protrusions with threaded holes, and the three mounting bolts are in threaded connection with the threaded holes of the three protrusions respectively.

[0013] Preferably, the top and the bottom of the alloy guide rail are clamped with sealing covers, the surface of the sealing cover is provided with an elastic silica gel strip, and a reserved groove part for wire arrangement is arranged between the sealing cover and the sticking part.

[0014] Preferably, two assembly plates with mounting holes are fixedly mounted on the side of the surface of the alloy guide rail away from the light guide plate body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] The utility model discloses a double scattering structure of hemispherical net dot surface composite spherical protrusion, breaks single net point light path distribution limitation, realizes linear light source to surface light source high uniformity conversion, and net dot and protrusion combined structure promote light control efficiency in total reflection angle range, reduces reverse scattering and reduces dependence on brightness enhancement film. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is the structure three-dimensional view of the utility model;

[0018] Figure 2 It is the structure three-dimensional exploded view of the utility model;

[0019] Figure 3 It is the alloy guide rail three-dimensional view of the utility model;

[0020] Figure 4 It is the local structure three-dimensional view of the utility model;

[0021] Figure 5 It is the light guide plate body sectional view of the utility model;

[0022] Figure 6 The utility model discloses a light guide mechanism perspective view.

[0023] In the drawing: 1, light guide plate body; 2, light incidence surface; 3, light emission surface; 4, light guide mechanism; 41, dot; 42, protrusion; 5, light source mechanism; 51, alloy guide rail; 511, outer expansion part; 512, sticking part; 52, LED lamp strip; 53, sticking layer; 6, shading layer; 7, hole part; 8, mounting bolt; 9, convex part; 10, sealing cover; 11, elastic silica gel strip; 12, assembly plate; 13, screw hole. DETAILED DESCRIPTION

[0024] The technical scheme in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model and not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of the utility model.

[0025] Please refer to Figures 1-6 The utility model provides a kind of technical scheme: a composite dot structure light guide plate that light is uniform, comprising:

[0026] Light guide plate body 1, light incidence surface 2, light emission surface 3 and light guide mechanism 4, the inside of light guide plate body 1 is provided with light guide mechanism 4, light guide mechanism 4 is used to change the incident linear light source into uniform area light source, one side of light guide plate body 1 is light incidence surface 2, the back of light guide plate body 1 is light emission surface 3;

[0027] Further include light source mechanism 5, light source mechanism 5 is used to light compensation in light guide plate body 1, light source mechanism 5 is set on one side of light incidence surface 2;

[0028] Specifically, by the double scattering structure of hemispherical dot 41 surface composite globular protrusion 42, break single dot 41 light path distribution limit, realize linear light source to area light source high uniform conversion, dot 41 and protrusion 42 combination structure improve light control efficiency in total reflection angle range, reduce reverse scattering, reduce dependence on brightness enhancement film, shading layer 6 inhibits the lateral light leakage of dot 41, further improve frontal light efficiency.

[0029] Light guide mechanism 4 includes dot 41 and protrusion 42, and the inside of light guide plate body 1 is arrayed with several hemispherical dots 41, and the surface of the several dots 41 is integrally processed with a plurality of globular protrusions 42;

[0030] In this embodiment, the hemispherical dots 41 have a diameter of 0.2-0.5mm, which produces the first omnidirectional scattering of incident light and destroys the light directionality, in line with the Mie scattering theory. The surface spherical protrusions 42 have a diameter of 50-200μm, which initiates secondary micro-scattering and fills the dark areas of the primary scattering. By controlling the curvature radius R of the protrusions 42, which is 25-100μm, the Rayleigh scattering and geometric optics are mixed, the composite dots 41 form multi-stage scattering with the hemispherical base and the spherical protrusions 42, and the light emitting surface 3 is more uniform.

[0031] The surface of the light guide plate body 1 is provided with a light shielding layer 6;

[0032] The light shielding layer 6 can cover the non-light emitting surface 3 of the light guide plate, such as the back surface or the side surface, and only the light emitting surface 3 (front surface) is transparent to light, which ensures the directional emission of light. The light layer reflects the leaked light back into the light guide plate, so that it participates in scattering again, thereby improving the light emitting efficiency.

[0033] The light emitting source mechanism 5 includes an alloy guide rail 51, an LED light strip 52, and a sticking layer 53. The alloy guide rail 51 includes an outwardly expanded part 511 and a sticking part 512. The outwardly expanded part 511 is used for mounting the light guide plate body 1, and the sticking part 512 is used for placing the LED light strip 52. One side of the LED light strip 52 is provided with the sticking layer 53, which is installed in the sticking part 512.

[0034] It should be noted that the piercing connector is used to realize electrical contact with the FPC of the LED light strip 52. The double-sided adhesive is used to fix the LED light strip 52 to the sticking layer 53. The double-sided adhesive is a high-thermal-conductivity double-sided adhesive (such as a silicone-based or acrylic adhesive, with a thermal conductivity coefficient ≥1.0W / m·K), which has both adhesive strength and heat conduction function, and is resistant to high temperature (working temperature -40℃~120℃), so as to avoid the brittleness of the adhesive layer after long-term use. A high-brightness side-emitting LED (such as a 2835 or 4014 package) is used. The distance between the lamp beads is optimized according to the thickness of the light guide plate (usually 3-5mm), so as to ensure the uniformity of light incidence. The lamp strip circuit can be integrated with a temperature sensor, which is connected to an external control system through a reserved groove.

[0035] The outwardly expanded part 511 of the surface of the alloy guide rail 51 is provided with three hole parts 7. The three hole parts 7 are movably sleeved with mounting bolts 8. The light guide plate body 1 is integrally processed with three protrusions 9 with threaded holes 13 on the light incidence surface 2. The three mounting bolts 8 are in threaded cooperation with the threaded holes 13 of the three protrusions 9, respectively.

[0036] It is worth noting that the three convex parts 9 of the light guide plate light inlet surface 2 correspond to the hole parts 7 one by one, and are formed by an integral molding process to avoid secondary processing damage to the light guide plate, the height of the convex part 9 is 1-2mm, which provides sufficient thread engagement depth, and does not excessively increase the thickness of the light guide plate, and the thread hole 13 is preferably M2-M3 fine thread, which takes into account the locking force and anti-loose performance.

[0037] The top and bottom of the alloy guide rail 51 are clamped with sealing covers 10, the surface of the sealing cover 10 is provided with an elastic silica gel strip 11, and a reserved groove part for wire arrangement is arranged between the sealing cover 10 and the sticking part 512;

[0038] The surface of the top and bottom sealing covers 10 is provided with an elastic silica gel strip 11, which shields and protects the top and bottom of the alloy guide rail 51.

[0039] The surface of the alloy guide rail 51 is fixedly installed with two assembly plates 12 with mounting holes away from the light guide plate body 1;

[0040] The assembly plate 12 is precisely CNC milled, the bolt penetrates the mounting hole and is installed on the wall surface or the plate, and plays a role of rapid installation.

[0041] The diameter of the hemispherical net point 41 is 0.2-0.5mm, which produces the first omnidirectional scattering of incident light, destroys the directional nature of light, meets the Mie scattering theory, the surface spherical protrusion 42 has a diameter of 50-200μm, initiates secondary microscattering, fills the dark area of primary scattering, controls the curvature radius of the protrusion 42, R=25-100μm, realizes the mixed action of Rayleigh scattering and geometric optics, the composite net point 41 forms multi-stage scattering by the hemispherical base and the spherical protrusion 42, and the light emitting surface 3 is more uniform.

[0042] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A light guide plate with a uniform light-guiding composite dot structure, characterized in that, include: The light guide plate body (1), the light incident surface (2), the light emitting surface (3) and the light guiding mechanism (4) are provided inside the light guide plate body (1). The light guiding mechanism (4) is used to convert the incident line light source into a uniform surface light source. One side of the light guide plate body (1) is the light incident surface (2), and the back side of the light guide plate body (1) is the light emitting surface (3). It also includes a light source mechanism (5), which is used to supplement light inside the light guide plate body (1), and the light source mechanism (5) is disposed on one side of the light incident surface (2).

2. The light guide plate with uniform light guiding through a composite dot structure according to claim 1, characterized in that: The light guide mechanism (4) includes dots (41) and protrusions (42). The light guide plate body (1) has a plurality of hemispherical dots (41) arranged in an array inside. The surfaces of the dots (41) are integrally processed with a plurality of spherical protrusions (42).

3. The light guide plate with uniform light guiding through a composite dot structure according to claim 1, characterized in that: The surface of the light guide plate body (1) is provided with a light-shielding layer (6).

4. The light guide plate with uniform light guiding through a composite dot structure according to claim 1, characterized in that: The light source mechanism (5) includes an alloy guide rail (51), an LED light strip (52), and an adhesive layer (53). The alloy guide rail (51) includes an expansion portion (511) and an adhesive portion (512). The expansion portion (511) is used to install the light guide plate body (1), and the adhesive portion (512) is used to place the LED light strip (52). An adhesive layer (53) is provided on one side of the LED light strip (52), and the adhesive layer (53) is installed in the adhesive portion (512).

5. A light guide plate with uniform light guiding through a composite dot structure according to claim 4, characterized in that: The outer expansion portion (511) on the surface of the alloy guide rail (51) is provided with three holes (7), and each of the three holes (7) is movably fitted with a mounting bolt (8). The light-incident surface (2) of the light guide plate body (1) is integrally machined with three protrusions (9) with threaded holes (13), and the three mounting bolts (8) are threadedly engaged with the threaded holes (13) of the three protrusions (9).

6. A light guide plate with uniform light guiding through a composite dot structure according to claim 4, characterized in that: The top and bottom of the alloy guide rail (51) are both fitted with sealing caps (10), the surface of the sealing cap (10) is provided with an elastic silicone strip (11), and a reserved groove for wiring is provided between the sealing cap (10) and the adhesive part (512).

7. A light guide plate with uniform light guiding through a composite dot structure according to claim 6, characterized in that: Two mounting plates (12) with mounting holes are fixedly installed on the side of the alloy guide rail (51) away from the light guide plate body (1).

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