CN211293332U

CN211293332U - Light guide plate and light source module

Info

Publication number: CN211293332U
Application number: CN201922328063.0U
Authority: CN
Inventors: 刘冠彣; 萧增科; 刘明达; 翁兆泓
Original assignee: Nano Precision Suzhou Co Ltd; Coretronic Corp
Current assignee: Nano Precision Suzhou Co Ltd; Coretronic Corp
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-08-18
Anticipated expiration: 2029-12-23
Also published as: TWM602646U

Abstract

A light guide plate has a light incident surface, a light emitting surface and a bottom surface. The light-out surface is opposite to the bottom surface, and the light-in surface is connected with the light-out surface and the bottom surface. The bottom surface is provided with a plurality of strip structures and a plurality of supporting structures. The strip-shaped structures are arranged from the light incidence surface to the first direction far away from the light incidence surface, the strip-shaped structures extend along the second direction respectively, and the first direction is not parallel to the second direction. The supporting structures are arranged between any two adjacent strip-shaped structures and protrude out of the bottom surface. The width of the light guide plate in the direction parallel to the light incident surface is W, the length of each of the strip-shaped structures in the direction parallel to the light incident surface is W1, and 0.9W ≦ W1 ≦ W. The utility model discloses provide a light source module who has this light guide plate in addition. The utility model discloses a light guide plate and light source module can reduce the absorption phenomenon between reflector plate and the light guide plate, and then promote the luminance degree of consistency to can reduce process time.

Description

Light guide plate and light source module

Technical Field

The present invention relates to a light source module, and more particularly, to a light guide plate and a light source module using the same.

Background

In general, a liquid crystal display device includes a liquid crystal display panel and a backlight module, and since the liquid crystal display panel itself does not emit light, the backlight module is required to provide a display light source to the liquid crystal display panel. Therefore, the main function of the backlight module is to provide a display light source with high luminance and high uniformity.

The backlight module can be divided into a side-in type backlight module and a direct type backlight module. In the conventional side-type backlight module, a groove-shaped structure (such as a V groove, an R groove, etc.) is sometimes designed on the light guide plate to adjust the light to achieve specific effects (such as control of the light emitting direction, scattering of the light, etc.), however, when a part of the optical films (such as a reflective sheet, etc.) are matched with the light guide plate with such a design, an absorption phenomenon is generated due to the large-area contact between the optical films and the light guide plate, which is easy to cause the brightness inconsistency of each region on the display screen, thereby causing the problems of dark and bright regions.

On the other hand, although the dot structure designed on the light guide plate can also disperse the light and reduce the absorption phenomenon, compared with the trench structure, the processing time is too long and the processing efficiency is not high.

The background section is provided to aid in understanding the present invention, and therefore the disclosure of the background section may include other art that does not constitute a part of the common general knowledge of the skilled person. Furthermore, the statements in the "background" section do not represent that section or the problems which may be solved by one or more embodiments of the present invention, nor are they intended to be known or appreciated by those skilled in the art prior to the present application.

SUMMERY OF THE UTILITY MODEL

The utility model provides a light guide plate can reduce the absorption phenomenon of reflector plate, and then promotes the luminance degree of consistency to can reduce process time.

The utility model provides a light source module can reduce the absorption phenomenon between reflector plate and the light guide plate, and then promotes the luminance degree of consistency to can reduce process time.

Other objects and advantages of the present invention can be further understood from the technical features disclosed in the present invention.

In order to achieve one or a part of or all of the above or other purposes, an embodiment of the present invention provides a light guide plate having a light incident surface, a light emitting surface and a bottom surface. The light-out surface is opposite to the bottom surface, and the light-in surface is connected with the light-out surface and the bottom surface. The bottom surface is provided with a plurality of strip structures and a plurality of supporting structures. The strip-shaped structures are arranged from the light incidence surface to the first direction far away from the light incidence surface, the strip-shaped structures extend along the second direction respectively, and the first direction is not parallel to the second direction. The supporting structures are arranged between any two adjacent strip-shaped structures and protrude out of the bottom surface. The width of the light guide plate in the direction parallel to the light incident surface is W, the length of each of the strip-shaped structures in the direction parallel to the light incident surface is W1, and 0.9W ≦ W1 ≦ W.

In order to achieve one or a part of or all of the above or other objects, an embodiment of the invention provides a light source module including a light emitting device, at least one optical film, a reflective sheet and the light guide plate. The light emitting element is arranged opposite to the light incident surface of the light guide plate and is used for emitting light rays to enter the light incident surface. At least one optical film is arranged beside the light-emitting surface. The reflector plate is arranged beside the bottom surface.

The utility model discloses among the light source module, the bottom surface of light guide plate has a plurality of bar structures and a plurality of bearing structure, compares in the known art the surface and only disposes bar structure's light guide plate, the utility model discloses a light guide plate can reduce the absorption phenomenon of disposing between other reflector plate of bottom surface and the light guide plate owing to have a plurality of bearing structure, and then promotes the luminance degree of consistency. In addition, a plurality of stripe structures that the bottom surface of light guide plate has also can reach the control of light-emitting direction, break up the effect of light, compare in the light guide plate that the surface only configured punctiform structure among the known art, the utility model discloses a light guide plate borrows and borrows the processing time that the great area ground stripe structure of preparation can reduce respectively to make a plurality of punctiform structures, promotes processing procedure efficiency.

In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

Fig. 1 is a schematic perspective view of a light source module according to an embodiment of the present invention.

Fig. 2 is a side view of fig. 1.

Fig. 3 is a schematic view of a light source module according to another embodiment of the present invention.

Fig. 4A to 4D illustrate other embodiments of the optical microstructure according to the present invention.

Fig. 5 is a schematic view of a light source module according to another embodiment of the present invention.

Fig. 6 is a schematic view of a light source module according to another embodiment of the present invention.

Fig. 7 is a bottom view of the light guide plate of fig. 6.

Fig. 8 is a schematic view of a light source module according to another embodiment of the present invention.

Fig. 9 is a schematic view of a light source module according to another embodiment of the present invention.

Detailed Description

The foregoing and other features, aspects and utilities of the present invention will be apparent from the following more particular description of preferred embodiments of the invention, as illustrated in the accompanying drawings. Directional terms as referred to in the following examples, for example: up, down, left, right, front or rear, etc., are simply directions with reference to the drawings. Accordingly, the directional terminology is used for purposes of illustration and is in no way limiting.

Fig. 1 is a schematic perspective view of a light source module according to an embodiment of the present invention. Fig. 2 is a side view of fig. 1. Referring to fig. 1 and 2, a light source module 1 of the present embodiment includes a light guide plate 10, a plurality of light emitting elements 20, at least one optical film 30, and a reflective sheet 40. The light guide plate 10 has a light incident surface 11, and a light emitting surface 12 and a bottom surface 13 opposite to each other, and the light incident surface 11 is connected to the light emitting surface 12 and the bottom surface 13. The bottom surface 13 has a plurality of bar structures 131 and a plurality of supporting structures 132. The number of the plurality of bar structures 131 and the plurality of supporting structures 132 in fig. 1 and fig. 2 is only for illustration, and the invention is not particularly limited to the number of the bar structures 131 and the supporting structures 132. The strip-shaped structures 131 are, for example, arranged from the light incident surface 11 to the first direction D1 away from the light incident surface 11, and the strip-shaped structures 131 respectively extend along the second direction D2, and the first direction D1 is not parallel to the second direction D2. In the present embodiment, the second direction D2 is, for example, parallel to the light incident surface, and the first direction D1 is, for example, perpendicular to the second direction D2, but is not limited thereto. The supporting structures 132 are disposed between any two adjacent strip-shaped structures 131 and protrude from the bottom surface 13. The light emitting element 20 is disposed opposite to the light incident surface 11 of the light guide plate 10, and is used for emitting light L to enter the light incident surface 11. At least one optical film 30 is disposed beside the light-emitting surface 12. The reflection sheet 40 is disposed near the bottom surface 13.

The width of the light guide plate 10 in a direction parallel to the light incident surface 11 is W, the length of each of the plurality of bar structures 131 in the direction parallel to the light incident surface 11 is W1, and 0.9W ≦ W1 ≦ W. In fig. 1, W1 is denoted by W. The plurality of bar structures 131 are recessed in the bottom surface 13, for example, but the present invention is not limited to the arrangement of the bar structures 131 on the light guide plate 10, and the bar structures 131 may also be protruding from the bottom surface 13. In addition, the plurality of bar structures 131 of the embodiment are, for example, triangular columns, but not limited thereto, the present invention does not limit the shapes of the bar structures 131, as long as the effects of controlling the light emitting direction and scattering light can be achieved.

The plurality of supporting structures 132 are configured to abut against the reflective sheet 40 to avoid an absorption phenomenon between the reflective sheet 40 and the light guide plate 10 (fig. 2 shows the strip-shaped structures 131 and the supporting structures 132 on the bottom surface 13 of the light guide plate 10 for clarity, and therefore the reflective sheet 40 and the supporting structures 132 are illustrated as being separated, but not limited thereto). Therefore, the distribution of the plurality of supporting structures 132 on the bottom surface 13, the shape thereof, and the material used are not particularly limited as long as the reflection sheet 40 is prevented from being adhered to the light guide plate 10.

The light emitting element 20 is used for providing the light L, and the light emitting element 20 can be a Light Emitting Diode (LED), but the present invention is not limited to the type of the light source. The number of the light emitting elements 20 in fig. 1 is 2 as an example, but the present invention is not particularly limited to the number of the light emitting elements 20.

The at least one optical film 30 includes, for example, a prism sheet, a reverse prism sheet, a diffusion sheet, or a combination thereof, and can be selected according to different design requirements.

In the light source module 1 of the present embodiment, the bottom surface 13 of the light guide plate 10 has the plurality of strip-shaped structures 131 and the plurality of supporting structures 132, and compared to the light guide plate with the strip-shaped structures on the surface in the prior art, the light guide plate 10 of the present embodiment has the plurality of supporting structures 132, so that the absorption phenomenon between the reflective sheet 40 disposed beside the bottom surface 13 and the light guide plate 10 can be reduced, and further the brightness uniformity can be improved. In addition, the plurality of strip-shaped structures 131 on the bottom surface 13 of the light guide plate 10 can also achieve the effects of controlling the light emitting direction and scattering light, and compared with the light guide plate with a dot-shaped structure on the surface in the prior art, the light guide plate 10 of the present embodiment can reduce the processing time for respectively manufacturing the plurality of dot-shaped structures by manufacturing the strip-shaped structures with a large area, thereby improving the processing efficiency.

Fig. 3 is a schematic view of a light source module according to another embodiment of the present invention. Referring to fig. 3, the light source module 1a of the present embodiment has a similar structure and advantages to the light source module 1 described above, and only the main differences of the structure will be described below. In the light source module 1a of the present embodiment, the bottom surface 13a of the light guide plate 10a further has a plurality of optical microstructures 133 disposed between any two adjacent strip-shaped structures 131 and protruding from the bottom surface 13 a. The distribution density of the optical microstructures 133 on the bottom surface 13a is, for example, uniform, but not limited to, in other embodiments, the distribution density of the optical microstructures 133 on the bottom surface 13a may be, for example, random, adjusted for local areas (e.g., the optical microstructures 133 are distributed more densely at relatively dark corners, and the optical microstructures 133 are distributed more sparsely at relatively bright light incident ends). Each optical microstructure 133 has a first reflection surface 1331 inclined with respect to the bottom surface 13a, the first reflection surface 1331 is located on a side of the optical microstructure 133 away from the light incident surface 11, and a first included angle θ 1 is formed between the first reflection surface 1331 and the bottom surface 13 a. Each strip-shaped structure 131 has a second reflection surface 1311 inclined with respect to the bottom surface 13a, the second reflection surface 1311 is located on one side of the strip-shaped structure 131 close to the light incident surface 11, and a second included angle θ 2 is formed between the second reflection surface 1311 and the bottom surface 13 a.

The at least one optical film 30a of the present embodiment is a reverse prism. The reverse prism sheet has a plurality of prism columns 301 and is disposed on the side of the reverse prism sheet facing the light guide plate 10 a. In order to match with the inverse prism lens, the light guide plate 10a is designed to emit light at a large angle, and different maximum brightness viewing angles may be generated when viewing due to different light emitting angles of different structures, so that the structural difference between the stripe structures 131 and the optical microstructures 133 is not suitable to be too large. Taking the present embodiment as an example, the angle difference between the first included angle θ 1 and the second included angle θ 2 is, for example, within ± 3 °.

Each optical microstructure 133 has a first vertex P1 far from the bottom surface 13a, and a first height H1 is between the first vertex P1 and the bottom surface 13 a. Each support structure 132 has a second apex P2 remote from the bottom surface 13a, a second height H2 between the second apex P2 and the bottom surface 13a, and the second height H2 between each support structure 132 is the same. The first height H1 is less than or equal to the second height H2. According to different design requirements, the shapes of the optical microstructures 133 may be adjusted, and each of the optical microstructures 133 may have a different shape or a first height H1, however, if the first height H1 is greater than the second height H2, the reflective sheet 40 may be abutted against the optical microstructures 133 rather than the supporting structure 132, and when the first heights H1 of the optical microstructures 133 are different, the stress between the reflective sheet 40 and the optical microstructures 133 may not be averaged, which may further cause an absorption phenomenon between the reflective sheet 40 and the light guide plate 10a or cause abrasion of the optical microstructures 133, thereby affecting the light transmission. In another embodiment, the supporting structures 132 can also be used as the optical micro-structures 133, that is, only the supporting structures 132 (as shown in fig. 2) are disposed on the bottom surface 13a of the light guide plate 10a, and the supporting structures 132 also have the effect of diffusing light, and the material of the supporting structures 132 is the same as that of the optical micro-structures 133, such as, but not limited to, transparent plastic, PMMA, and the like. It should be noted that when the supporting structures 132 are used as the optical microstructures 133, the second height H2 between each supporting structure 132 is still the same to avoid the absorption phenomenon between the reflective sheet 40 and the light guide plate 10 a.

The plurality of optical microstructures 133 in fig. 3 are illustrated as dots, but not limited thereto. Fig. 4A to 4D illustrate other embodiments of the optical microstructure according to the present invention. Referring to fig. 3 and fig. 4A to 4D, the optical microstructures 133 may also be non-dot structures, as shown in fig. 4A. Alternatively, the optical microstructure 133 further has a first structure surface 1332 connected to the bottom surface 13a and the first reflection surface 1331 (as shown in fig. 4B and 4C), for example. Specifically, the first reflection surface 1331 is not directly connected to the bottom surface 13a, the first included angle θ 1 is still the angle between the first reflection surface 1331 and the bottom surface 13a (the dotted line in fig. 4B and 4C is parallel to the bottom surface 13 a), and most of the light is reflected by the first reflection surface 1331 instead of the first structure surface 1332. The first reflection surface 1331 may be, for example, a cambered surface, besides the plane shown in fig. 4A to 4C, and the first included angle θ 1 is an angle between a tangent line at the connection point of the first reflection surface 1331 and the bottom surface 13a, as shown in fig. 3 and 4D. The above is only an embodiment of the optical microstructure 133, but the optical microstructure 133 of the present invention is not limited to the above-listed examples.

Fig. 5 is a schematic view of a light source module according to another embodiment of the present invention. Referring to fig. 5, the light source module 1b of the present embodiment has similar structure and advantages to the light source module 1 described above, and the difference is that the plurality of strip structures 131b protrude from the bottom surface 13b of the light guide plate 10 b. When the strip-shaped structures 131b protrude from the bottom surface 13b, the second reflective surface 1311 is located on a side of the strip-shaped structures 131b away from the light incident surface 11. Each of the strip-shaped structures 131b has a third apex P3 remote from the bottom surface 13b, and a third height H3 is between the third apex P3 and the bottom surface 13 b. Each support structure 132 has a second apex P2 remote from the bottom surface 13b, a second height H2 between the second apex P2 and the bottom surface 13b, and the second height H2 between each support structure 132 is the same. The principle of the third height H3 is the same as that of the optical microstructure 133 in fig. 3, for example, the third height H3 is smaller than the second height H2, and if the third height H3 is larger than the second height H2, the reflective sheet 40 may collide with the bar-shaped structure 131b instead of the supporting structure 132, which may cause an absorption phenomenon or abrasion of the bar-shaped structure 131b, thereby affecting the light transmission. In fig. 5, for clarity, the plurality of bar-shaped structures 131b protrude from the bottom surface 13b of the light guide plate 10b, and therefore the optical microstructures 133 are not shown, which does not exclude the design of the optical structures 133 in this embodiment.

Fig. 6 is a schematic view of a light source module according to another embodiment of the present invention. Fig. 7 is a bottom view of the light guide plate of fig. 6. Referring to fig. 6, the light source module 1c of the present embodiment has a similar structure and advantages to the light source module 1a, and only the main differences of the structure will be described below. When the optical film 30a in the light source module 1c is a reverse prism, the light guide plate 10c is designed to emit light at a large angle, so that the side close to the light incident surface has insufficient brightness, and thus the depth of the strip-shaped structure 131c and the distribution density of the optical microstructures 133c can be adjusted by changing, as will be described in detail below.

In the light source module 1c of this embodiment, each of the strip-shaped structures 131c has a third vertex P3 far away from the bottom surface 13c, a third height H3 is disposed between the third vertex P3 and the bottom surface 13c, and the third heights H3 of the strip-shaped structures 131c gradually decrease from the position close to the light incident surface 11 toward the first direction D1 and then gradually increase. Specifically, although the third heights H3 of the plurality of bar-shaped structures 131c are different, the second angle θ 2 between the bottom surface 13c and the bar-shaped structures 131c is not changed, so that the larger the third height H3 of the bar-shaped structures 131c is, the larger the area of the second reflecting surface 1311 is, the easier the light L is reflected, and the brightness of the emergent light is improved. By the above design, the brightness of one side close to the light incident surface 11 and the brightness of the other side of the light guide plate 10c far from the light incident surface 11 can be improved.

Referring to fig. 7, in addition to changing the third height H3 of the bar-shaped structures 131c, the distribution density of the optical microstructures 133c on the bottom surface 13c may also be changed, for example, the optical microstructures are designed to become gradually thinner and denser from the position close to the light incident surface 11 along the first direction D1. The plurality of support structures 132 are omitted from fig. 7 to clearly illustrate the optical microstructures 133 c.

Fig. 8 is a schematic view of a light source module according to another embodiment of the present invention. Referring to fig. 8, the light source module 1d of the present embodiment has a similar structure and advantages to the light source module 1a, and only the main differences of the structure will be described below. In the light source module 1D of the present embodiment, to solve the problem of insufficient brightness on the side of the light guide plate 10D away from the light incident surface, each of the optical microstructures 133D has a first vertex P1 away from the bottom surface 13D, a first height H1 is provided between the first vertex P1 and the bottom surface 13D, and the first heights H1 of the optical microstructures 133D gradually increase from the position close to the light incident surface 11 toward the first direction D1. However, as mentioned above, the first height H1 of each optical microstructure 133d still needs to be less than or equal to the second height H2 of each supporting structure 132. In addition, each of the stripe structures 131D has a third vertex P3 far from the bottom surface 13D, a third height H3 is provided between the third vertex P3 and the bottom surface 13D, the distances D between the stripe structures 131D are the same, and the third heights H3 of the stripe structures 131D are gradually increased from the position close to the light incident surface 11 toward the first direction D1. Specifically, when the first height H1 of the plurality of optical microstructures 133d is larger, the area of the first reflection surface 1331 is larger because the first included angle θ 1 is not changed, so that the light L is easier to reflect, and the brightness of the emergent light is improved. Similarly, when the third height H3 of the plurality of bar structures 131d is larger, the second included angle θ 2 is not changed, so the area of the second reflecting surface 1311 is larger, the light L is easier to reflect, and the brightness of the emergent light is improved. By the above design, the brightness of the other side of the light guide plate 10d away from the light incident surface 11 can be improved.

The at least one optical film 30d of the present embodiment is, for example, a composite film, and includes a first prism sheet 31, a second prism sheet 32, a first diffusion sheet 33, and a second diffusion sheet 34. The first prism sheet 31 is disposed between the second prism sheet 32 and the light guide plate 10d, and has a plurality of first prism columns 311 disposed on a side of the first prism sheet 31 away from the light guide plate 10 d. The second prism sheet 32 has a plurality of second prism columns 321, and is disposed on a side of the second prism sheet 32 away from the light guide plate 10 d. For example, the second prism columns 321 extend along the first direction D1, and the first prism columns 311 extend perpendicular to the second prism columns 321, but not limited thereto. The first diffusion sheet 33 is disposed on a side of the first prism sheet 31 facing the light guide plate 10 d. The second diffusion sheet 34 is disposed on a side of the second prism sheet 32 away from the light guide plate 10 d. The above is only an embodiment of the optical film 30d, but the optical film 30d of the present invention is not limited to the above-described embodiment. In another embodiment, only a single prism sheet may be used.

Under the configuration of the composite film, compared to the large-angle light output of the inverse prism lens used in the light source module 1a in fig. 3, the tolerance of the structural difference between the strip structure 131d and the optical microstructure 133d is larger in the present embodiment, and the angle difference between the first included angle θ 1 and the second included angle θ 2 may be, for example, within ± 6 °.

Fig. 9 is a schematic view of a light source module according to another embodiment of the present invention. Referring to fig. 9, the light source module 1e of the present embodiment has a similar structure and advantages to the light source module 1d described above, and only the main differences of the structure will be described below. In the embodiment, the third heights H3 of the strip-shaped structures 131e are the same, and the distance D between the strip-shaped structures 131e gradually decreases from the position close to the light incident surface 11 toward the first direction D1. Specifically, the distribution density of the plurality of stripe structures 131e gradually becomes denser from the position close to the light incident surface 11 along the first direction D1, which can achieve the effect similar to the above manner of changing the plurality of third heights H3.

To sum up, in the light source module of the embodiment of the utility model, the bottom surface of light guide plate has a plurality of bar structures and a plurality of bearing structure, compares in the known art the surface only disposes the light guide plate of bar structure, the utility model discloses a light guide plate owing to have a plurality of bearing structure, can reduce the absorption phenomenon of disposing between other reflector plate of bottom surface and light guide plate, and then promotes the luminance degree of consistency. In addition, a plurality of stripe structures that the bottom surface of light guide plate has also can reach the control of light-emitting direction, break up the effect of light, compare in the light guide plate that the surface only configured punctiform structure among the known art, the utility model discloses a light guide plate borrows and borrows the processing time that the great area ground stripe structure of preparation can reduce respectively to make a plurality of punctiform structures, promotes processing procedure efficiency.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention should not be limited thereby, and all the simple equivalent changes and modifications made according to the claims and the description of the present invention are still included in the scope of the present invention. Moreover, it is not necessary for any embodiment or claim of the invention to address all of the objects, advantages, or features disclosed herein. In addition, the abstract and the utility model name are only used to assist the searching of the patent documents, and are not used to limit the scope of the invention. Furthermore, the terms "first," "second," and the like in the description and in the claims are used for naming elements (elements) or distinguishing between different embodiments or ranges, and are not intended to limit the upper or lower limit on the number of elements.

Description of reference numerals:

1. 1a, 1b, 1c, 1d, 1 e: light source module

10. 10a, 10b, 10c, 10d, 10 e: light guide plate

11: light incident surface

12: light emitting surface

13. 13a, 13b, 13c, 13d, 13 e: bottom surface

131. 131b, 131c, 131d, 131 e: strip structure

1311: second reflecting surface

132: support structure

133. 133c, 133 d: optical microstructure

1331: first reflecting surface

1332: first structural surface

20: light emitting element

30. 30a, 30 d: optical film

301: prism column

31: first prism sheet

311: first prism column

32: second prism sheet

321: second prism column

33: first diffusion sheet

34: second diffusion sheet

40: reflector plate

d: distance between each other

D1: a first direction

D2: second direction

H1: first height

H2: second height

H3: third height

L: light ray

P1: first vertex

P2: second vertex

P3: third vertex

W: width of

W1: length of

θ 1: first included angle

θ 2: and a second included angle.

Claims

1. A light guide plate is characterized in that the light guide plate is provided with a light incident surface, a light emergent surface and a bottom surface, the light emergent surface is opposite to the bottom surface, the light incident surface is connected with the light emergent surface and the bottom surface, the bottom surface is provided with a plurality of strip-shaped structures and a plurality of supporting structures, the plurality of strip-shaped structures are arranged from the position close to the light incident surface to the first direction far away from the light incident surface, the plurality of strip-shaped structures extend along the second direction respectively, the first direction is not parallel to the second direction, the plurality of supporting structures are arranged between any two adjacent strip-shaped structures and protrude out of the bottom surface, the width of the light guide plate in the direction parallel to the light incident surface is W1, and the length of each strip-shaped structure in the direction parallel to the light incident surface is W1 and is less than or equal to 0.9W 1W.

2. The light guide plate as claimed in claim 1, wherein the bottom surface further has a plurality of optical microstructures disposed between any two adjacent stripe structures and protruding from the bottom surface.

3. The light guide plate according to claim 2, wherein the distribution density of the plurality of optical microstructures on the bottom surface is uniform.

4. The light guide plate according to claim 2, wherein the distribution density of the plurality of optical microstructures on the bottom surface is randomly distributed.

5. The light guide plate according to claim 2, wherein the distribution density of the plurality of optical microstructures on the bottom surface is locally dense or sparsely distributed.

6. The light guide plate according to claim 2, wherein each of the plurality of optical microstructures has a first vertex far from the bottom surface, a first height is formed between the first vertex and the bottom surface, and the first heights of the plurality of optical microstructures are gradually larger from a position near the light incident surface toward the first direction.

7. The light guide plate of claim 2, wherein each of the plurality of optical microstructures has a first vertex remote from the bottom surface, a first height between the first vertex and the bottom surface, and each of the plurality of support structures has a second vertex remote from the bottom surface, a second height between the second vertex and the bottom surface, and the first height is less than or equal to the second height.

8. The light guide plate according to claim 2, wherein each of the plurality of optical microstructures has a first reflective surface inclined with respect to the bottom surface, the first reflective surface is located on a side of the optical microstructure away from the light incident surface, and a first included angle is formed between the first reflective surface and the bottom surface; each strip-shaped structure is provided with a second reflecting surface which is inclined relative to the bottom surface, a second included angle is formed between the second reflecting surface and the bottom surface, and the angle difference between the first included angle and the second included angle is within +/-6 degrees.

9. The light guide plate according to claim 8, wherein when the plurality of bar structures are recessed in the bottom surface, the second reflective surface is located on a side of the bar structures close to the light incident surface; when the plurality of strip-shaped structures protrude out of the bottom surface, the second reflecting surface is located on one side, away from the light incident surface, of each strip-shaped structure.

10. The light guide plate according to claim 8, wherein each of the plurality of optical microstructures further has a first structure surface connected to the bottom surface and the first reflective surface.

11. The light guide plate according to claim 8, wherein the first reflective surface is a flat surface or an arc surface.

12. The light guide plate according to claim 1, wherein each of the plurality of stripe structures has a third vertex far away from the bottom surface, a third height is formed between the third vertex and the bottom surface, and the third heights of the plurality of stripe structures gradually decrease from the position near the light incident surface toward the first direction and then gradually increase.

13. The light guide plate according to claim 1, wherein each of the plurality of stripe structures has a third vertex far away from the bottom surface, a third height is formed between the third vertex and the bottom surface, the intervals between the plurality of stripe structures are the same, and the third heights of the plurality of stripe structures are gradually greater from the position close to the light incident surface toward the first direction.

14. The light guide plate according to claim 1, wherein each of the plurality of stripe structures has a third vertex far from the bottom surface, a third height is provided between the third vertex and the bottom surface, the third heights of the plurality of stripe structures are the same, and the distance between the plurality of stripe structures gradually decreases from the position near the light incident surface toward the first direction.

15. The light guide plate as claimed in claim 1, wherein the plurality of bar-shaped structures protrude from the bottom surface, each of the plurality of bar-shaped structures has a third vertex far away from the bottom surface, a third height is provided between the third vertex and the bottom surface, each of the plurality of support structures has a second vertex far away from the bottom surface, a second height is provided between the second vertex and the bottom surface, and the third height is smaller than the second height.

16. A light source module, comprising a light guide plate, a light emitting device, at least one optical film and a reflective sheet, wherein:

the light guide plate is provided with a light incident surface, a light emergent surface and a bottom surface which are opposite to each other, the light incident surface is connected with the light emergent surface and the bottom surface, the bottom surface is provided with a plurality of strip-shaped structures and a plurality of supporting structures, the strip-shaped structures are arranged from the position close to the light incident surface to the first direction far away from the light incident surface, the strip-shaped structures extend along the second direction respectively, the first direction is not parallel to the second direction, the supporting structures are arranged between any two adjacent strip-shaped structures and protrude out of the bottom surface, the width of the light guide plate in the direction parallel to the light incident surface is W, the length of each strip-shaped structure in the direction parallel to the light incident surface is W1, and 0.9W is less than or equal to W1;

the light emitting element is arranged opposite to the light incident surface of the light guide plate and is used for emitting light rays to enter the light incident surface;

the at least one optical film is arranged beside the light-emitting surface; and

the reflector plate is arranged beside the bottom surface.

17. The light source module of claim 16, wherein the bottom surface further has a plurality of optical microstructures disposed between any two adjacent strip-shaped structures and protruding from the bottom surface, each of the plurality of optical microstructures has a first reflecting surface inclined with respect to the bottom surface, the first reflecting surface is located on a side of the optical microstructure away from the light incident surface, and a first included angle is formed between the first reflecting surface and the bottom surface; each strip-shaped structure is provided with a second reflecting surface inclined relative to the bottom surface, and a second included angle is formed between the second reflecting surface and the bottom surface.

18. The light source module of claim 17, wherein when the plurality of bar structures are recessed in the bottom surface, the second reflective surface is located on a side of the bar structures close to the light incident surface, and when the plurality of bar structures are protruded out of the bottom surface, the second reflective surface is located on a side of the bar structures away from the light incident surface.

19. The light source module of claim 17, wherein the at least one optical film comprises an inverse prism sheet, the inverse prism sheet has a plurality of prism columns disposed on a side of the inverse prism sheet facing the light guide plate, and an angle difference between the first included angle and the second included angle is within ± 3 °.

20. The light source module of claim 17, wherein the at least one optical film comprises a prism sheet having a plurality of prism columns disposed on a side of the prism sheet away from the light guide plate, and the angle difference between the first angle and the second angle is within ± 6 °.