CN217587664U

CN217587664U - Light guide plate

Info

Publication number: CN217587664U
Application number: CN202221765453.XU
Authority: CN
Inventors: 祁亚洲; 徐勇
Original assignee: Jiangsu TSD Electronics Technology Co Ltd
Current assignee: Jiangsu TSD Electronics Technology Co Ltd
Priority date: 2022-07-08
Filing date: 2022-07-08
Publication date: 2022-10-14
Anticipated expiration: 2032-07-08

Abstract

The utility model provides a light guide plate, including relative bottom surface and the play plain noodles that sets up, with the income plain noodles that bottom surface and play plain noodles are connected, be equipped with the first astigmatic spare of interconnect and second astigmatic spare on the play plain noodles, first astigmatic spare is including being used for carrying out the first refracting surface of refraction to the light that jets out on the play plain noodles, and second astigmatism spare is including being used for carrying out the second refracting surface of refraction to the light that jets out on the play plain noodles, and the contained angle setting is personally submitted with second refracting to first refracting surface. After light passes through the plain noodles and arrives first astigmatism spare and second astigmatism spare, can be refracted by the first refracting surface on the first astigmatism spare and the second refracting surface on the second astigmatism spare, because the contained angle setting is personally submitted with the second refracting surface to first refracting surface, consequently, the light after being refracted by first refracting surface and second refracting surface can be diffused according to the position that first refracting surface and second refracting surface belonged to, can the effectual propagation angle who increases light, increase the illumination area promptly.

Description

Light guide plate

Technical Field

The utility model relates to a leaded light subassembly technical field, concretely relates to light guide plate.

Background

The backlight module of the existing liquid crystal display mainly comprises a light guide plate and a light-emitting source arranged on one side of a light incident surface of the light guide plate, wherein the light-emitting source is provided with a plurality of luminous bodies which can be light-emitting diodes (LEDs).

In the prior art, a light guide plate includes a light incident surface, a light emitting surface adjacent to the light incident surface, a first light guide structure, and a second light guide structure. The first light guide structure is arranged on the light incident surface and provided with a plurality of first semi-arc bodies, the second light guide structure is arranged on the light emergent surface and provided with a plurality of second semi-arc bodies. The uniformity of the light-emitting surface can be improved by arranging the second light guide structure.

However, in the light guide plate, the second light guide structure disposed on the light exit surface can improve the uniformity of light to a certain degree, but cannot effectively increase the propagation angle of light emitted from the light exit surface, i.e., cannot effectively increase the illumination range.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model aims to solve the technical problem that the light guide plate among the prior art sets up the degree of consistency that second light-directing structure can improve light to a certain extent on going out the plain noodles, but the propagation angle after unable effectual increase light jets out from going out the plain noodles, unable effectual increase illumination scope promptly.

Therefore, the utility model provides a light guide plate, including relative bottom surface and the play plain noodles that sets up, with the income plain noodles that bottom surface and play plain noodles are connected, be equipped with the first astigmatic piece of interconnect and second astigmatic piece on the play plain noodles, first astigmatic piece carries out the first refracting surface of refraction including being used for carrying out the light of penetrating on the play plain noodles, second astigmatic piece carries out the second refracting surface of refraction including being used for the light that penetrates on the play plain noodles, first refracting surface with the contained angle setting is personally submitted to the second refracting.

Optionally, the cross-sectional area of the first light scattering member gradually decreases along an extending direction of the light emergent surface toward the first refractive surface.

Optionally, the cross-sectional area of the second light scattering member gradually decreases along the extending direction of the light emergent surface toward the second refraction surface.

Optionally, the first refraction surface is an arc-shaped curved surface, a wave-shaped curved surface, or a broken line-shaped curved surface.

Optionally, the second refraction surface is an arc-shaped curved surface, a wave-shaped curved surface, or a zigzag-shaped curved surface.

Optionally, the first light-scattering member further includes a first reflection surface, the first reflection surface is connected to the first refraction surface and the second refraction surface, and the first reflection surface is configured to reflect light that does not pass through the first refraction surface and the second refraction surface.

Optionally, the light guide plate further includes a light-increasing member, the light-increasing member is connected to the light-emitting surface, the light-increasing member includes a plurality of second reflecting surfaces connected to each other, and a plane where the surface of the second reflecting surface is located and the light-emitting surface are arranged at an acute angle, so that light emitted from the light-emitting surface is reflected back to the inside of the light guide plate for repeated refraction.

Optionally, a plurality of light diffusion grooves are formed in the light incident surface, and the LED lamp beads are arranged on one sides of the light diffusion grooves to refract light emitted by the LED lamp beads so as to increase the propagation angle of the light.

Optionally, the light expansion groove is a V-shaped groove, and an angle of a vertex angle of the V-shaped groove is 30-140 degrees.

Optionally, the bottom surface is provided with a boss so as to enable light rays emitted into the light guide plate by the LED lamp beads to be distributed in the light guide plate more uniformly.

The technical scheme provided by the utility model, following advantage has:

1. the utility model provides a light guide plate, including relative bottom surface and the play plain noodles that sets up, with the income plain noodles that bottom surface and play plain noodles are connected, be equipped with the first astigmatic piece of interconnect and second astigmatic piece on the play plain noodles, first astigmatic piece carries out the first refracting surface of refraction including being used for carrying out the light of penetrating on the play plain noodles, second astigmatic piece carries out the second refracting surface of refraction including being used for carrying out the light of penetrating on the play plain noodles, first refracting surface with the contained angle setting is personally submitted in the second refracting.

The light guide plate of this structure, through be equipped with first astigmatism piece and second astigmatism piece on going out the plain noodles, after light passed out the plain noodles and reachd first astigmatism piece and second astigmatism piece, can be by the refraction of the second refraction face on the first astigmatism piece and the second astigmatism piece, because first refraction face with the contained angle setting is personally submitted to the second refraction, consequently, the light after being refracted by first refraction face and second refraction face can be diffused according to the position at first refraction face and second refraction face place, can effectual increase the propagation angle of light, increase the illumination area promptly.

2. The utility model provides a light guide plate, first astigmatism spare still includes first plane of reflection, first plane of reflection is connected first plane of refraction with the second plane of refraction, first plane of reflection is used for not passing first plane of refraction with the light of second plane of refraction reflects.

The light guide plate of this structure, when light passes first astigmatism piece and second astigmatism piece, can have partly light can be reflected by first astigmatism piece and second astigmatism piece, through being provided with first plane of reflection, can carry out a lot of secondary reflection to the light of being reflected back by first astigmatism piece and second astigmatism piece, then get into the light guide plate with the light reflection inside, light jets out from going out the plain noodles once more after the refraction of light guide plate inner structure, can enough strengthen the luminance of first astigmatism piece and second astigmatism piece department light, also can be to reducing complete machine consumption and saving raw and other materials cost.

3. The utility model provides a light guide plate still includes the piece that adds lustre to, add lustre to with the play plain noodles is connected, the piece that adds lustre to includes a plurality of interconnect's second plane of reflection, the plane at second plane of reflection surface place with the acute angle setting is personally submitted to the light-emitting to the light reflection that jets out in going out the plain noodles returns the inside repeated refraction of light guide plate.

The light guide plate of this structure, through be connected with the piece that adds lustre to on going out the plain noodles, the piece that adds lustre to includes a plurality of interconnect's second plane of reflection, when emitting light on the play plain noodles, the second plane of reflection can reflect light, and the plane at second plane of reflection surface place with the acute angle setting is personally submitted to the light-emitting for inside the light guide plate can be penetrated again by the light that the second plane of reflection reflects, and then refracts inside the light guide plate, and then penetrates again from the play plain noodles and enters into first scattered light spare and second scattered light spare, and then can strengthen the light of first scattered light spare and second scattered light spare department, improves the luminance of first scattered light spare and second scattered light spare department light.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a perspective view of a light guide plate provided in an embodiment of the present invention;

fig. 2 is a schematic structural view of a light guide plate and LED lamp beads provided in an embodiment of the present invention;

FIG. 3 is an enlarged view of the structure of FIG. 2 at circle A;

fig. 4 is a schematic view of a back structure of a light guide plate according to an embodiment of the present invention;

fig. 5 is a schematic structural view of a first light-scattering member, a second light-scattering member and a light-increasing member in a light guide plate according to an embodiment of the present invention;

FIG. 6 is an enlarged view of the structure of FIG. 5 at circle B;

description of reference numerals:

1-a bottom surface;

2-light emitting surface;

3-light incident surface; 31-a diffusion groove;

4-a first diffuser; 41-a first refractive surface; 42-a first reflective surface;

5-a second diffuser; 51-a second refractive surface;

6-a brightening piece; 61-a second reflective surface;

7-LED lamp beads;

8-boss.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Furthermore, the technical features mentioned in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

Examples

The present embodiment provides a light guide plate, as shown in fig. 1 to 6, including a bottom surface 1, a light emitting surface 2, a light incident surface 3, a first light scattering member 4, a second light scattering member 5, a light intensifying member 6, and a boss 8. The bottom surface 1 and the light emitting surface 2 are arranged oppositely, the light incident surface 3 is connected between the bottom surface 1 and the light emitting surface 2, the light emitting surface 2 is connected with a first light scattering piece 4, a second light scattering piece 5 and a light intensifying piece 6, and the bottom surface 1 is connected with a boss 8.

As shown in fig. 2 and fig. 3, the light incident surface 3 is provided with a plurality of light diffusion grooves 31, the light diffusion grooves 31 may be V-shaped grooves, the angle of the vertex angle of the V-shaped groove is 30 to 140 degrees, and the light diffusion grooves 31 may also be open grooves with other shapes, such as U-shaped grooves. One side of the light diffusion groove 31 is provided with the LED lamp beads 7, light rays emitted by the LED lamp beads 7 can enter the light guide plate after being refracted through the side wall of the light diffusion groove 31, and the divergence angle of the light rays is improved.

As shown in fig. 4 and 5, the boss 8 is arranged on the bottom surface 1, light can pass through the boss 8 after entering the light guide plate, the boss 8 is uniformly arranged on the surface of the bottom surface 1, and the light which is emitted into the light guide plate by the LED lamp beads 7 can be more uniformly distributed in the light guide plate.

As shown in fig. 5 and 6, the light-emitting surface 2 is provided with a first light-scattering member 4 and a second light-scattering member 5 which are connected to each other, the first light-scattering member 4 includes a first refraction surface 41 for refracting light emitted from the light-emitting surface 2, the second light-scattering member 5 includes a second refraction surface 51 for refracting light emitted from the light-emitting surface 2, when the light passes through the light-emitting surface 2 and reaches the first light-scattering member 4 and the second light-scattering member 5, the light can be refracted by the first refraction surface 41 on the first light-scattering member 4 and the second refraction surface 51 on the second light-scattering member 5, and the first refraction surface 41 and the second refraction surface 51 are disposed at an included angle, so that the light refracted by the first refraction surface 41 and the second refraction surface 51 can be diffused according to the positions of the first refraction surface 41 and the second refraction surface 51, and the first refraction surface 41 and the second refraction surface 51 disposed at the included angle can effectively increase the propagation angle of the light, that is, i.e., increase the illumination area. The first refraction surface 41 and the second refraction surface 51 are arc-shaped curved surfaces, wave-shaped curved surfaces or zigzag-shaped curved surfaces.

Wherein, along the extending direction of going out the plain noodles 2 to 41 directions of first refracting surface, the cross-sectional area of first astigmatism piece 4 reduces gradually, first astigmatism piece 4 is toper or frustum of a pyramid shape promptly, the contained angle of the first astigmatism piece 4 side of this kind of shape and play plain noodles 2 is the acute angle, when light did not pass first astigmatism piece 4, light can be refracted by first astigmatism piece 4 side, because the contained angle acute angle of side and play plain noodles 2, therefore light can be refracted after penetrating into inside the light guide plate, penetrate again in first astigmatism piece 4 after the internal refraction of light guide plate, strengthen the intensity of light of first astigmatism piece 4 department.

Similarly, along the extending direction from the light emitting surface 2 to the second refraction surface 51, the cross-sectional area of the second light scattering member 5 is gradually decreased, so as to enhance the intensity of the light at the second light scattering member 5.

As shown in fig. 6, the first light scattering member 4 further includes a first reflection surface 42, the first reflection surface 42 connects the first refraction surface 41 and the second refraction surface 51, when light passes through the first light scattering member 4 and the second light scattering member 5, a part of light may be reflected by the first light scattering member 4 and the second light scattering member 5, by providing the first reflection surface 42, light reflected by the first light scattering member 4 and the second light scattering member 5 may be reflected again for a plurality of times, and then reflected into the light guide plate, and light is refracted by the internal structure of the light guide plate and then emitted from the light emitting surface 2 again, so that the brightness of light at the first light scattering member 4 and the second light scattering member 5 may be enhanced, and the overall power consumption and the raw material cost may be reduced.

As shown in fig. 5 and 6, the light increasing member 6 includes a plurality of second reflecting surfaces 61 connected to each other, when light is emitted from the light emitting surface 2, the second reflecting surfaces 61 can reflect the light, and a plane where the surface of the second reflecting surfaces 61 is located and the light emitting surface 2 are disposed at an acute angle, so that the light reflected by the second reflecting surfaces 61 can be re-emitted into the light guide plate, and then refracted inside the light guide plate, and then re-emitted from the light emitting surface 2 to enter the first light scattering member 4 and the second light scattering member 5, so that the light at the first light scattering member 4 and the second light scattering member 5 can be enhanced, and the brightness of the light at the first light scattering member 4 and the second light scattering member 5 is improved.

The light guide plate of this embodiment, during operation, inside the light guide plate was entered into after the diffusion of the diffusion groove 31 on going into plain noodles 3 to the light that LED lamp pearl 7 jetted out, then through the even diffusion behind the boss 8 on the bottom surface 1 inside the light guide plate, then from the first scattered light part 4 and the 5 effluvium of second scattered light part on the play plain noodles 2, after the effect that first scattered light part 4 and the 5 effluvium of second scattered light part penetrated, can enlarge the propagation direction of light to increase illumination area.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims

1. The utility model provides a light guide plate, including relative bottom surface (1) and the play plain noodles (2) that set up, with go into plain noodles (3) that bottom surface (1) and play plain noodles (2) are connected, its characterized in that, be equipped with first astigmatic piece (4) of interconnect and second astigmatic piece (5) on going out plain noodles (2), first astigmatic piece (4) carry out refracting first refraction face (41) including being used for going up the light that jets out to going out plain noodles (2), second astigmatic piece (5) carry out refracting second refraction face (51) including being used for going up the light that jets out to going out plain noodles (2), first refraction face (41) with second refraction face (51) are the contained angle setting.

2. The light guide plate according to claim 1, wherein the cross-sectional area of the first diffuser (4) decreases gradually along the extension of the light exit surface (2) towards the first refractive surface (41).

3. The light guide plate according to claim 1, wherein the cross-sectional area of the second light scattering member (5) is gradually reduced along the extension direction of the light exit surface (2) toward the second refraction surface (51).

4. The light guide plate according to any one of claims 1 to 3, wherein the first refraction surface (41) is a circular arc-shaped curved surface, a wave-shaped curved surface, or a zigzag-shaped curved surface.

5. The light guide plate according to claim 4, wherein the second refraction surface (51) is a circular arc-shaped curved surface, a wave-shaped curved surface, or a zigzag-shaped curved surface.

6. The light guide plate according to claim 5, wherein the first light diffuser (4) further comprises a first reflecting surface (42), the first reflecting surface (42) connects the first refracting surface (41) and the second refracting surface (51), and the first reflecting surface (42) is used for reflecting light rays which do not pass through the first refracting surface (41) and the second refracting surface (51).

7. The light guide plate according to claim 6, further comprising a light-enhancing member (6), wherein the light-enhancing member (6) is connected to the light-emitting surface (2), the light-enhancing member (6) includes a plurality of second reflecting surfaces (61) connected to each other, and a plane on which the surfaces of the second reflecting surfaces (61) are located and the light-emitting surface (2) are disposed at an acute angle, so as to reflect the light emitted from the light-emitting surface (2) back into the light guide plate for repeated refraction.

8. The light guide plate according to claim 7, wherein the light incident surface (3) is provided with a plurality of light diffusion grooves (31), and one side of each light diffusion groove (31) is provided with the LED lamp beads (7) so as to refract the light emitted by the LED lamp beads (7) to increase the propagation angle of the light.

9. The light guide plate according to claim 8, wherein the light diffusion grooves (31) are V-shaped grooves, and the angle of the top angle of the V-shaped grooves is 30-140 degrees.

10. The light guide plate according to claim 9, wherein the bottom surface (1) is provided with a boss (8) to distribute the light emitted from the LED beads (7) into the light guide plate more uniformly.