TWM579292U - Light guide panel and lighting module - Google Patents

Abstract

A light guide panel includes a light guide plate and a patterned transparent layer. The light guide plate has a first light incident surface, a microstructured surface and a light exiting surface. The microstructured surface and the light exiting surface are opposite, and the first light incident surface is connected between the microstructured surface and the light exiting surface, wherein the whole microstructured surface is provided with a plurality of first micro-grooves, and each of the first micro-grooves has a first facing surface facing the first light-incident surface. The patterned transparent layer is disposed on the microstructured surface and filled into a number of the first micro-grooves. A lighting module is also provided. The light guide plate and the lighting module have the advantages of reducing the mold cost, reducing the mold development time, and increasing the freedom of pattern change of the light guide panel.

Description

Light guide plate and lighting module

The present invention relates to a light-emitting device, in particular to a light guide plate and a lighting module.

At present, most of the products for the illuminating lamp panel adopt an acrylic substrate, and the groove is formed on the surface of the acrylic substrate by injection or embossing, and the light source is arranged on the side of the acrylic substrate to make the light source of the light source. Light is emitted in the acrylic substrate or through reflection of the grooves, wherein a particular pattern of illumination is formed by the arrangement of the different grooves.

However, the conventional acrylic substrate having a groove pattern needs to be fabricated using a mold, and whether it is hot rolling, hot pressing or injection molding, one mold can only correspond to one pattern, because the cost of opening the mold is large and The long modification time makes the pattern of the traditional illuminating lighting board change little and expensive, and it is difficult to cope with the current trend of attracting consumers with diversification and parity.

This "Prior Art" paragraph is only intended to aid in understanding the content of this creation, and thus the content disclosed in "Previous Technology" may contain some conventional techniques that are not known to those of ordinary skill in the art. In addition, the content disclosed in the "Prior Art" does not represent the problem to be solved by the content or one or more embodiments of the present invention, nor does it mean that it has been known to those skilled in the art prior to the present application. Know or recognize.

The present invention provides a light guide plate and a lighting module, which has the advantages of reducing the mold cost, reducing the mold development time, and increasing the degree of freedom of the light guide plate pattern change.

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

In order to achieve one or a part or all of the above or other purposes, the light guide plate provided by the present invention comprises a light guide plate and a patterned transparent layer. The light guide plate has a first light incident surface, a microstructured surface and a light exiting surface, and the microstructured surface and the light emitting surface are opposite, and the first light incident surface is connected between the microstructured surface and the light emitting surface. The entire microstructured surface is provided with a plurality of first micro-grooves, each of the first micro-grooves having a first surface-facing surface facing the first light-incident surface. The patterned transparent layer is disposed on the microstructured surface and filled into a portion of the first micro-groove.

In an embodiment of the present invention, the light guide plate has a first refractive index, the patterned transparent layer has a second refractive index, and the second refractive index is greater than 0.91 times the first refractive index.

In an embodiment of the present invention, the first illuminating surface is inclined with respect to the microstructured surface, and the first illuminating surface has an angle with the microstructured surface, and the included angle is between 90 degrees and 156 degrees.

In an embodiment of the present invention, the patterned transparent layer protrudes from the microstructured surface.

In an embodiment of the present invention, a portion of the first micro-trench is filled with a patterned transparent layer, and a portion of the first micro-trench is partially filled with the patterned transparent layer.

In an embodiment of the present invention, each of the first micro-grooves has a length between 60 microns and 280 microns.

In an embodiment of the present invention, the depth of each of the first micro-grooves is between 5 microns and 30 microns.

In an embodiment of the present invention, the light guide plate further has a second light incident surface connected between the microstructure surface and the light exit surface, and the entire microstructure surface is further provided with a plurality of second micro grooves, each of the first The two micro-grooves have a second surface-facing surface facing the second light-incident surface, and the patterned transparent layer is further filled into a portion of the second micro-channels.

In an embodiment of the present invention, the angle between the first front surface and the microstructure surface is the same or different from the angle between the second surface and the microstructure surface.

In order to achieve one or a part or all of the above or other purposes, the lighting module provided by the present invention comprises the above-mentioned light guide plate and the first light source. The first light source is disposed relative to the first light incident surface.

In an embodiment of the present invention, the lighting module further includes a second light source, wherein the light guide plate further has a second light incident surface connected between the microstructure surface and the light exit surface, and the second light source is opposite to the second light source. The light surface is disposed, the whole microstructure surface is further provided with a plurality of second micro grooves, the extending direction of the first micro grooves is different from the extending direction of the second micro grooves, and each of the second micro grooves has a second surface facing The second surface of the smooth surface is engraved, and the patterned transparent layer is further filled into a portion of the second micro-groove.

The creative light guide plate is provided with a micro-groove on the light guide plate, and fills a part of the micro-groove with a patterned transparent layer, so that the light-emitting surface corresponds to the position where the patterned transparent layer is filled without light. a darker effect, and the position of the light-emitting surface corresponding to the unfilled or only partially filled with the patterned transparent layer is brighter due to the light that can be emitted, thereby allowing the light-guiding decorative sheet to be patterned by a transparent layer of different patterns. It can be set to meet the needs of different light patterns. Therefore, the light guide plate only needs to use a mold with a full configuration of micro-grooves, and the transparent material filling technology can produce light guide plates with different patterns, which can reduce the mold cost and reduce the mold development time. It also has the advantage of increasing the degree of freedom of the change of the light guide plate pattern.

The above and other objects, features and advantages of the present invention will become more apparent and understood.

The above and other technical contents, features and effects of the present invention will be apparent from the following detailed description of the preferred embodiments. The directional terms mentioned in the following embodiments, such as up, down, left, right, front or back, etc., are only directions referring to the additional drawings. Therefore, the directional terminology used is used to illustrate that it is not intended to limit the creation.

1 is a top plan view of a lighting module including a first light source and a light guide plate according to an embodiment of the present invention, and FIG. 2 is a partial cross-sectional view of a PP' line of the light guide plate of FIG. A partially enlarged schematic view of the light guide plate of the area A of the light guide plaque of 1. As shown in FIGS. 1 to 3 , the lighting module 30 includes a light guide plate 10 and a first light source 32 . The light guide plate 10 includes a light guide plate 12 and a patterned transparent layer 14. The light guide plate 12 has a first light incident surface 16, a microstructure surface 18 and a light exit surface 20, and the microstructure surface 18 and the light exit surface 20 are opposite each other. The smooth surface 16 is connected between the microstructured surface 18 and the light-emitting surface 20, wherein the entire microstructured surface 18 is provided with a plurality of first micro-grooves 22, each of which has a first light-incident surface 16 facing the first light-incident surface 16. The first light-facing surface 221 . In one embodiment, the first micro-grooves 22 are, for example, grooves having a V-shaped cross section. The patterned transparent layer 14 is disposed on the microstructured surface 18 and filled into portions of the first micro trenches 22. In one embodiment, a portion of the first micro trench 22 is filled with the patterned transparent layer 14 , and another portion of the first micro trench 22 is partially filled with the patterned transparent layer 14 (not shown) or Fill in any patterned transparent layer 22. The filling of the foregoing, for example, the patterned transparent layer 14 just fills the first micro-groove 22, and the surface of the patterned transparent layer 14 is equal to the microstructured surface 18 (not shown), or the pattern The transparent layer 14 fills the first micro-grooves 22 and then protrudes slightly from the microstructured surface 18, at which point the patterned transparent layer 14 covers a portion of the microstructured surface 18. In the embodiment shown in FIG. 1, a portion of the first micro trench 22 is filled by the patterned transparent layer 14 to protrude from the microstructured surface 18, and the other portion of the first micro trench 22 is not filled with patterning. Transparent layer 14.

Following the above description, as shown in FIG. 1 , in one embodiment, the light guide plate 12 has, for example, opposite left side faces 121 and right side faces 122 , and opposite upper side faces 123 and lower side faces 124 . The left side surface 121 and the right side surface 122 are connected to the upper side surface 123 and the lower side surface 124. The left side surface 121, the right side surface 122, the upper side surface 123, and the lower side surface 124 are connected between the microstructured surface 18 and the light emitting surface 20 (shown in FIG. 2). In an embodiment, for example, the left side surface 121 of the light guide plate 12 is used as the first light incident surface 16, and as shown in FIG. 3, the plurality of first micro grooves 22 on the microstructure surface 18 are, for example, substantially longitudinally oriented. That is, the upward direction of the upper side 123 or the downward side of the side surface 124, wherein the first micro-grooves 22 are not necessarily limited to being arranged in parallel, and the first light-incident surface 221 of the first micro-trench 22 is substantially facing the first light. Face 16 (take left side 121 as an example). Moreover, when the first micro-grooves 22 are substantially longitudinally oriented, the left side surface 121 of the light guide plate 12 is not limited to be the first light-incident surface 16, and in an embodiment not shown, the left side surface 121 of the light guide plate 12 And the right side surface 122 can be used as the first light incident surface 16 . At this time, the first micro trench 22 has two opposite first light incident surfaces 221 , and one of the first light incident surfaces 221 is substantially opposite to the light guide plate 12 . The left side surface 121 and the other first light-incident surface 221 are substantially opposite to the right side surface 122 of the light guide plate 12.

In an embodiment not shown, at least one of the four corners of the light guide plate 12 can form an angular plane as the first light incident surface 16, and the first microgroove 22 will not be longitudinal. Rather, it is generally along the chamfer plane such that the first mating surface 221 of the first micro-groove 22 can face generally the first light-incident surface 16 at the corner.

The light guide plate 12 has a first refractive index, the patterned transparent layer 14 has a second refractive index, and the second refractive index of the patterned transparent layer 14 is similar to the first refractive index, as shown in FIGS. 1 and 2, by patterning. When the transparent layer 14 fills the first micro trench 22, the partial light beam L1 incident from the first light incident surface 16 and incident on the patterned transparent layer 14 will maintain total reflection inside the light guide plate 12 without emitting light, that is, light output. The surface 20 corresponds to a position where the patterned transparent layer 14 is filled, and no light is emitted to achieve a darker effect; and the first light incident surface 16 is incident and is incident on the partially filled or unfilled patterned transparent layer 14. The partial light beam L2 of the first micro-trench 22 is totally reflected by the first light-incident surface 221 to the light-emitting surface 20, that is, the position of the light-emitting surface 20 corresponding to the partially filled or unfilled patterned transparent layer 14 Light out and present a brighter pattern.

The first light-incident surface 221 is inclined with respect to the microstructured surface 18, and FIG. 4 is a schematic diagram of the tilting surface of the present embodiment with respect to the microstructured surface. As shown in the figure, the first light-incident surface 221 and the microstructured surface are as shown. There is an angle φ between 18, and the plate of the conventional light guide plate 12 has a first refractive index of, for example, approximately 1.5, and air has a refractive index of 1. According to the Snell's law, in order to make the first light-incident surface 221 totally reflect the light beam L2 incident on the first light-incident surface 16 to the light-emitting surface 20, and then emit light through the light-emitting surface 20, the light beam L2 that is incident on the light-emitting surface 20 The angle of incidence θ needs to be less than 42 degrees to avoid total reflection at the light exit surface 20. Therefore, the angle φ between the first brightness-inciding surface 221 and the microstructured surface 18 needs to be less than 156 degrees, and preferably, the angle φ is between 90 degrees and 156 degrees. At the same time, after the patterned transparent layer 14 is filled into the first micro-grooves 22, the interface between the first light-incident surface 221 and the patterned transparent layer 14 is not generated by the difference between the first refractive index and the second refractive index. Total reflection, therefore, in the selection of the material of the patterned transparent layer 14, the second refractive index is required to be greater than 0.91 times the first refractive index, that is, if n ₁ represents the first refractive index, n ₂ represents the second refractive index. , then n ₂ >0.91 n ₁ .

The first micro-grooves 22 can be formed on the light-guiding plate 12 by means of hot-pressing, hot-rolling or ejecting, but not limited thereto, and a first micro-groove can be disposed on the light-guiding plate 12. 22 film layer. Moreover, when the filling process of the patterned transparent layer 14 is performed, the first micro-grooves 22 may be filled with a transparent ink or a colloid, for example, by inkjet, screen printing or artificial drawing. In the curing condition of the colloid, after filling the first micro-groove 22, the colloid can be cured by baking, natural drying or ultraviolet curing, wherein the patterned transparent layer 14 after curing has the above-mentioned The second refractive index.

The length of the plurality of first micro trenches 22 may be the same or different. In one embodiment, the length of the first micro trench 22 is between 60 micrometers and 280 micrometers; and the plurality of first micro trenches The depths of 22 may be the same or different, and in one embodiment, the depth of the first micro-grooves 22 is between 5 microns and 30 microns.

Referring to FIG. 1 , the first light source 32 of the lighting module 30 is disposed relative to the first light incident surface 16 . When the first light source 32 is not illuminated, the light guide panel 10 is transparent, and when the first light source 32 is illuminated, the light guide panel 10 generates a floating pattern image according to the pattern of the patterned transparent layer 14.

5 is a top plan view of a lighting module including a first light source, a second light source, and a light guide plate according to another embodiment of the present invention, and FIG. 6 is a partial enlarged view of the light guide plate of the region B of the light guide plate of FIG. schematic diagram. As shown in FIGS. 5 and 6, the lighting module 30A includes a light guide plate 10A, a first light source 32, and a second light source 34. The light guide plate 10A includes a light guide plate 12A and a patterned transparent layer 14. The difference between the light guide plate 10A and the light guide plate 10 of the previous embodiment is that the light guide plate 12A of the light guide plate 10A further has a second light incident surface 24, and the second light incident surface 24 is also connected to the microstructured surface. 18 is between the light exit surface 20 (shown in Figure 2). As in the previous embodiment, the light guide plate 12A has, for example, opposite left side faces 121 and right side faces 122, and opposite upper side faces 123 and lower side faces 124. In an embodiment, the second light incident surface 24 is not opposite to the first light incident surface 16, for example, the left side surface 121 of the light guide plate 12A is used as the first light incident surface 16, and the upper side surface 123 of the light guide plate 12A is used as the second surface. Light into the surface 24. As shown in FIG. 6, the entire microstructured surface 18 is provided with a plurality of first micro-grooves 22 and a plurality of second micro-grooves 26, each of which has a first surface facing the first light-incident surface 16. The second light-groove surface 221 has a second light-incident surface 261 facing the second light-incident surface 24 . The patterned transparent layer 14 is disposed on the microstructured surface 18 and filled into a portion of the first micro trench 22 and a portion of the second micro trench 26.

Following the above description, in an embodiment, the first micro trench 22 and the second micro trench 26 are, for example, grooves having a V-shaped cross section. As shown in FIG. 6, the first micro-grooves 22 extend substantially longitudinally, that is, toward the upper side 123 or the lower side 124. The second micro-grooves 26 extend substantially in a lateral direction, that is, extend toward the left side. Or the direction in which the right side surface 122 extends, wherein the first micro-grooves 22 and the second micro-grooves 26 are not necessarily limited to being arranged in parallel, and the first light-incident surface 221 of the first micro-grooves 22 is substantially facing the first light-incident surface. 16 (taking the left side surface 121 as an example), the second light-incident surface 261 of the second micro-groove 26 is substantially facing the second light-incident surface 24 (the upper side surface 123 is taken as an example).

The first micro trench 22 and the second micro trench 26 may or may not intersect on the entire microstructured surface 18. The first light-incident surface 221 of the first micro-groove 22 and the second light-incident surface 261 of the second micro-groove 26 are inclined with respect to the microstructured surface 18, wherein the first light-incident surface 221 and the microstructured surface 18 are The angle φ and the angle φ between the second face-up surface 261 and the microstructured surface 18 may be the same or different. As described above, the light beams that are incident on the first surface 221 and the second surface 261 are totally reflected by the first surface 221 and the second surface 261 to the light exit surface 20 (shown in FIG. 2). After that, the light exiting the light surface 20 can be emitted, so the angle φ needs to be between 90 degrees and 156 degrees. The length and depth range of the second micro trench 26 may be the same or similar to the length and depth of the first micro trench 22, respectively, and the second micro trench 26 is formed in the same manner as the first micro trench 22. This will not be repeated here. Further, the first micro-grooves 22 and the second micro-grooves 26 can be fabricated simultaneously or by secondary processing.

The left side surface 121 of the light guide plate 12A is not limited to the first light incident surface 16 when the first micro-grooves 22 are substantially longitudinally oriented. In an embodiment not shown, the left side surface 121 of the light guide plate 12A. Both the right side surface 122 and the right side surface 122 can be used as the first light incident surface 16, and the first micro-grooves 22 have substantially opposite first light-incident surfaces 221 as described in the previous embodiment. When the second micro-grooves 26 are substantially laterally oriented, the upper surface 123 of the light guide plate 12A is not limited to the second light-incident surface 24. In an embodiment not shown, the upper surface 123 of the light guide plate 12A and the lower surface. Both sides 124 can serve as the second light-incident surface 24, and the second micro-grooves 26 have substantially opposite second light-incident surfaces 261, and one of the second light-incident surfaces 261 is substantially opposite to the upper surface 123 of the light guide plate 12A. The other second illuminating surface 261 is substantially planar to the lower side 124 of the light guide plate 12A.

Referring to FIG. 5 , the first light source 32 and the second light source 34 of the lighting module 30A are respectively disposed corresponding to the first light incident surface 16 and the second light incident surface 24 of the light guide plate 12A. When the first light source 32 and the second light source 34 are not illuminated, the light guide panel 10 is rendered transparent. When the first light source 32 or the second light source 34 is lit, since the first micro trench 22 and the second micro trench 26 have different orientations, or the first light incident surface 221 and the second light incident surface 261 The degree of inclination is different. For the pattern of the same patterned transparent layer 14 on the light guide plate 12A, the light emitted by the first light source 32 is totally reflected by the first light-incident surface 221 to the light-emitting surface 20, and The light-emitting effect of the light beam generated by the second light source 34 being totally reflected by the second light-incident surface 261 to the light-emitting surface 20 is different. That is to say, the lighting module with dual light sources (for example, the first light source and the second light source) can exhibit different special effects depending on the direction of light entering. In an embodiment, according to the arrangement design of the first micro trench 22 and the second micro trench 26, the first light incident surface 16 of the light guide plate 12A can be totally reflected by the first light incident surface 221 The light-emitting pattern to the light-emitting surface 20 exhibits light such as sandblasting or mosaic effect; when the second light-incident surface 24 of the light guide plate 12A enters light, the light-emitting pattern that is totally reflected by the second light-incident surface 261 to the light-emitting surface exhibits a stereoscopic lightning The light effect of the ray effect. In addition, according to the angle of illumination of the mating surface and the direction and distance of the light source, the screen can produce effects such as a sense of distance, flicker, or animation. Further, the first light source 32 and the second light source 34 may have light beams of the same or different colors, so that the light-emitting effect is more diverse.

The first micro trench 22 and the second micro trench 26 are not limited to an elongated V-shaped groove structure. In an embodiment, the first micro trench 22 and/or the second micro trench 26 may be In the meniscus-type structure, as shown in FIG. 7, the meniscus-type micro-grooves 36 have two curved sides having different curvatures, wherein one of the curved sides faces the first light-incident surface 16 or the second light-incident surface 24 The face of the light 38. 8A to 8C are schematic cross-sectional views showing the AA line, the BB line, and the CC line of the meniscus type microgroove shown in Fig. 7, respectively. As shown in FIGS. 8A to 8C, the respective regions of the meniscus type micro-grooves 36 have different depths, resulting in a difference in the size of the region of the light-incident surface 38. For example, the area indicated by the AA line (ie, the area near the end of the meniscus type micro-groove 36), the depth of the meniscus-type micro-groove 36 is shallow, and the area of the light-facing surface 38 is small; In the region, the depth of the meniscus type micro-groove 36 and the area of the light-incident surface 38 are slightly increased from the end region; the area indicated by the CC line (ie, the middle portion of the meniscus-type micro-groove 36), the meniscus-type microgroove The depth of the groove 36 and the face surface 38 are the largest, but the shape of the meniscus type micro groove is not limited thereto.

According to the above, the light guide plate of the present embodiment is configured to completely arrange the micro-grooves on the light guide plate, and fill a part of the micro-grooves with the patterned transparent layer, so that the light-emitting surface corresponds to filling the patterned transparent layer. At the position, no light will be emitted to achieve a darker effect, and the position of the light-emitting surface corresponding to the unfilled or only partially filled with the patterned transparent layer is brighter due to the light that can be emitted, thereby making the light guide plate different. The patterning of the patterned transparent layer can be adapted to the needs of different light-emitting patterns. Therefore, the light guide plate of the embodiment of the present invention only needs to use a mold with a full configuration of micro-grooves, and the light-shielding plate with different patterns can be prepared by the technique of filling the transparent material, thereby reducing the mold cost. And to reduce the mold development time, but also has the advantage of increasing the degree of freedom of the light guide plate pattern change.

However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention cannot be limited by this, that is, the simple equivalent change and modification made by the applicant according to the scope of the patent application and the new description content, All are still covered by this creation patent. In addition, any embodiment or application of the present invention is not required to achieve all of the objects or advantages or features disclosed in the present disclosure. In addition, the abstract sections and headings are only used to assist in the search for patent documents and are not intended to limit the scope of the invention. In addition, the terms "first" and "second" as used in the specification or the scope of the patent application are used only to name the elements or to distinguish different embodiments or ranges, and are not intended to limit the number of elements. Upper or lower limit.

10, 10A‧‧‧Lighting plate

12, 12A‧‧‧Light guide plate

A, B‧‧‧ area

121‧‧‧left side

122‧‧‧ right side

123‧‧‧Upper side

124‧‧‧ Lower side

14‧‧‧ patterned transparent layer

16‧‧‧First light entry

18‧‧‧Microstructured surface

20‧‧‧Glossy

22‧‧‧First micro-groove

221‧‧‧First light-facing surface

L1, L2‧‧‧ beams

AA, BB, CC, PP'‧‧‧ cut line

Φ‧‧‧ angle

Θ‧‧‧incident angle

24‧‧‧Second entrance

26‧‧‧Second micro-groove

261‧‧‧second illuminating surface

30, 30A‧‧‧Lighting Module

32‧‧‧First light source

34‧‧‧second light source

36‧‧‧Moon moon type micro-groove

38‧‧‧Welcome

1 is a top plan view of a lighting module including a first light source and a light guide plate according to an embodiment of the present invention. Figure 2 is a partial cross-sectional view showing the PP' line of the light guide plate of Figure 1. 3 is a partially enlarged schematic view showing a light guide plate in a region A of the light guide panel of FIG. 1. FIG. 4 is a schematic view showing the inclination of the face-up surface relative to the microstructured surface according to an embodiment of the present invention. FIG. 5 is a top plan view of a lighting module including a first light source, a second light source, and a light guide plate according to another embodiment of the present invention. Fig. 6 is a partially enlarged schematic view showing a light guide plate in a region B of the light guide panel of Fig. 5. FIG. 7 is a schematic structural view of a micro-groove according to an embodiment of the present invention. 8A to 8C are schematic cross-sectional views showing the AA line, the BB line, and the CC line of the meniscus type microgroove shown in Fig. 7, respectively.

Claims (11)

A light guide plate comprising: a light guide plate having a first light incident surface, a microstructured surface and a light emitting surface, wherein the microstructured surface and the light emitting surface are opposite, and the first light incident surface is connected to the micro light emitting surface Between the structural surface and the light-emitting surface, wherein the entire microstructure surface is provided with a plurality of first micro-grooves, each of the first micro-grooves having a first light-incident surface facing the first light-incident surface; And a patterned transparent layer disposed on the microstructured surface and filled into a portion of the first micro trenches. The light guide plate of claim 1, wherein the light guide plate has a first refractive index, and the patterned transparent layer has a second refractive index, the second refractive index being greater than 0.91 times the first refractive index. The light guide panel of claim 1, wherein the first light-incident surface is inclined with respect to the microstructure surface, the first light-incident surface has an angle with the microstructure surface, and the angle is between 90 degrees. Between 156 degrees. The light guide panel of claim 1, wherein the patterned transparent layer protrudes from the microstructured surface. The light guide plate of claim 1, wherein a part of the first micro grooves are filled with the patterned transparent layer, and some of the first micro grooves are partially filled by the patterned transparent layer. The light guide panel of claim 1, wherein each of the first microchannels has a length between 60 micrometers and 280 micrometers. The light guide plaque according to claim 1, wherein each of the first micro grooves has a depth of between 5 micrometers and 30 micrometers. The light guide plate of claim 1 , wherein the light guide plate further has a second light incident surface connected between the microstructure surface and the light exit surface, and the microstructure surface is further provided with a plurality of second surfaces. The micro-grooves each of the second micro-grooves have a second surface-facing surface facing the second light-incident surface, and the patterned transparent layer is further filled into a portion of the second micro-channels. The light guide panel of claim 1, wherein an angle between the first light-incident surface and the microstructured surface is the same or different from an angle between the second light-incident surface and the microstructured surface. A lighting module comprising: a light guide plate comprising a light guide plate and a patterned transparent layer, the light guide plate having a first light incident surface, a microstructure surface and a light exit surface, the microstructure surface and the The light-emitting surface is opposite, and the first light-incident surface is connected between the microstructure surface and the light-emitting surface, wherein the entire microstructure surface is provided with a plurality of first micro-grooves, each of the first micro-grooves having a first light-incident surface facing the first light-incident surface, a patterned transparent layer is disposed on the microstructure surface, and is filled in a portion of the first micro-grooves; and a first light source is opposite to the first light source A light setting. The lighting module of claim 10, further comprising a second light source, wherein the light guide plate further has a second light incident surface connected between the microstructured surface and the light emitting surface, wherein the second light source is opposite to the light emitting surface The second light incident surface is disposed, and the entire microstructure surface is further provided with a plurality of second micro grooves, and the first micro grooves are extended in a direction different from the extending direction of the second micro grooves, each of the The second micro-grooves have a second mating surface facing the second light-incident surface, and the patterned transparent layer is further filled into a portion of the second micro-grooves.