TWM634732U - Light concentrating light guide plate and backlight module - Google Patents

Abstract

A light concentrating light guide plate including a plate body, strip structures and curved prism structures is provided. The plate body has a first surface, a second surface, a third surface, a fourth surface and a light incident surface. The strip structures are formed on the first surface and extend along a first direction, and are arranged along a second direction. Each of the strip structures includes a first inclined surface and a second inclined surface that are inclined to the first surface and inclined in opposite directions. Each of the curved prism structures is arranged on a strip structure and two ends of it respectively extend to the first inclined surface and the second inclined surface of the strip structure. Each of the curved prism structures has a first light receiving surface and a second light receiving surface facing the light incident surface, and ca first shady surface and a second shady surface facing away from the light incident surface. Moreover, a backlight module including the light concentrating light guide plate is also provided.

Description

Concentrating light guide plate and backlight module

The invention relates to a light guide plate and a backlight module, and in particular to a light-collecting light guide plate and a backlight module.

In the conventional side-lit backlight module, the light incident surface of the light guide plate receives the light beam from the light source, and the light beam enters the light guide plate and passes through the geometric structure arranged on the upper or lower surface of the light guide plate, resulting in total reflection of the light beam is destroyed, so that the light beam emerges from the upper surface of the light guide plate. Then, by means of the optical film set arranged on the light guide plate, the front luminance of the side-type backlight module is improved and the viewing angle range is controlled.

In order to make the light inside the light guide plate more efficiently utilized by the optical film group, the geometric structure arranged on the upper surface or the lower surface of the light guide plate is usually optimized. However, after the light beam is transmitted to the optimized geometric structure, a certain degree of stray light will still be formed, so that the energy of the light beam is not concentrated enough after being refracted out of the light guide plate. Therefore, how to make the energy of the light beam refracted from the light guide plate more concentrated, and how to make the light beam more efficiently used by the optical film group is one of the problems that the research and development personnel want to solve urgently.

The "Prior Art" paragraph is only used to help understand the content of the present invention, so the content disclosed in the "Prior Art" paragraph may contain some conventional technologies that do not constitute the knowledge of those with ordinary skill in the art. The content disclosed in the "Prior Art" paragraph does not mean that the content or the problems to be solved by one or more embodiments of the new creation have been known or recognized by those with ordinary knowledge in the technical field before the application of the new creation .

The new invention provides a light-collecting light guide plate, which can concentrate the energy of the light beam emitted from it, and can also finely control the exit angle of the light beam.

The present invention provides a backlight module, which uses the above-mentioned light-collecting light guide plate to have high positive luminance.

Other purposes and advantages of the new creation can be further understood from the disclosed technical characteristics of the new creation.

In order to achieve one or part or all of the above purposes or other purposes, the light-collecting light guide plate according to an embodiment of the present invention includes a plate body, a plurality of strip structures and a plurality of curved beam structures. The plate body has a first surface, a second surface, a third surface, a fourth surface and a light incident surface, wherein the first surface faces away from the second surface, and the third surface and the fourth surface are opposite to each other and connect the first surface and the second surface. surface, and the incident surface connects the first surface, the second surface, the third surface and the fourth surface. A plurality of strip structures are formed on the first surface and extend along a first direction, and are arranged on the first surface along a second direction perpendicular to the first direction, wherein the first direction is perpendicular to the light incident surface. Each strip structure includes a first slope and a second slope. The first slope is inclined to the first surface and faces the third surface. The included angle between the first slope and the first surface is greater than or equal to 5 degrees and less than or equal to 60 degrees. The second slope is inclined to the first surface and faces the fourth surface. The direction in which the first slope is inclined relative to the first surface is opposite to the direction in which the second slope is inclined relative to the first surface. The included angle between the second slope and the first surface is greater than or equal to 5 degrees and less than or equal to 60 degrees. Each curved jelly structure is disposed on one of the plurality of strip structures and its two ends respectively extend to the first slope and the second slope of one of the plurality of strip structures. Each curved beam structure has a first light-receiving surface facing the light incident surface and connected to the first inclined surface, a first backlight surface facing away from the light incident surface and connected to the first inclined surface, and a first light-receiving surface facing the light incident surface and connected to the second inclined surface. Two light-receiving surfaces and a second backlight surface facing away from the light-incident surface and connected to the second inclined surface. The included angle between the first light-receiving surface and the first slope is greater than or equal to 5 degrees and less than or equal to 45 degrees. The included angle between the second light-receiving surface and the second slope is greater than or equal to 5 degrees and less than or equal to 45 degrees. The first light-receiving surface and the second light-receiving surface of each curved structure are planes.

In order to achieve one or part or all of the above purposes or other purposes, the backlight module according to an embodiment of the present invention includes the above-mentioned light-collecting light guide plate, a light source and at least one film. The light source is arranged on the light incident surface of the light-collecting light guide plate to provide light beams. The second surface of the plate body of the concentrating light guide plate is located between the first surface of the plate body of the concentrating light guide plate and at least one film.

In an embodiment of the new creation, the first light-receiving surface and the first backlight surface of each of the above-mentioned curved pleated structures meet at the first ridge line, and the second light-receiving surface and the second backlight of each curved pleated structure The surface intersects with the second ridgeline, the first ridgeline and the second ridgeline intersect with the first direction respectively, and the first ridgeline and the second ridgeline are connected.

In an embodiment of the present invention, the first inclined surface and the second inclined surface of each of the strip structures meet at a third ridgeline, and the third ridgeline is parallel to the first direction.

In an embodiment of the present invention, each of the aforementioned strip structures further includes a top surface connecting the first slope and the second slope. Each curved slanted structure extends from the first inclined surface of the strip structure to the second inclined surface through the top surface.

In an embodiment of the new creation, the above-mentioned strip structure includes a first strip structure, a second strip structure, and a third strip structure arranged in sequence in the second direction, and the plurality of curved 稜鏡 structures are respectively It is arranged on the first strip structure and the third strip structure, the second strip structure is not provided with a curved 稜鏡 structure, and a plurality of curved 稜鏡 are respectively arranged on the first strip structure and the third strip structure The structures are separated by a second strip-like structure.

In an embodiment of the new creation, the above-mentioned plurality of curved slant structures respectively arranged on the first strip structure and the third strip structure respectively extend to the second slope and the first slope of the second strip structure .

In an embodiment of the new creation, the first light-receiving surface of each of the above-mentioned curved 稜鏡 structures forms an angle Z1 between a section line parallel to the light-incident surface and the second direction, and each curved 稜鏡 structure An angle A1 is formed between a section line of the first light-receiving surface perpendicular to the light-incident surface and the first direction, and the angle Z1 is different from the angle A1.

In an embodiment of the new creation, the second light-receiving surface of each above-mentioned curved 稜鏡 structure has an angle Z2 between the section line parallel to the light-incident surface and the second direction, and the second light-receiving surface of each curved 稜鏡 structure An angle A2 is formed between a section line perpendicular to the light-incident surface of the second light-receiving surface and the first direction, and the angle Z2 is different from the angle A2.

In an embodiment of the new creation, the first light-receiving surface of each above-mentioned curved 稜鏡 structure has an angle Z1 between the section line parallel to the light-incident surface and the second direction, and the first light-receiving surface of each curved 稜鏡 structure An angle Z2 is formed between a section line of the second light-receiving surface parallel to the light-incident surface and the second direction, and the angle Z1 is different from the angle Z2.

In an embodiment of the new creation, the first light-receiving surface of each of the above-mentioned curved 稜鏡 structures has an angle A1 between the section line perpendicular to the light incident surface and the first direction, and the first light-receiving surface of each curved 稜鏡 structure A section line perpendicular to the light incident surface of a backlight surface forms an angle a1 with the first direction, and the angle A1 is different from the angle a1.

In an embodiment of the new creation, the second light-receiving surface of each above-mentioned curved 稜鏡 structure has an angle A2 between the section line perpendicular to the light-incident surface and the first direction, and the first direction of each curved 稜鏡 structure An angle a2 is formed between a section line perpendicular to the light incident surface of the two backlight surfaces and the first direction, and the angle A2 is different from the angle a2.

In an embodiment of the new creation, the areas of the plurality of first light-receiving surfaces of the above-mentioned plurality of curved 稜鏡 structures are different from each other, and the areas of the plurality of second light-receiving surfaces of the plurality of curved 稜鏡 structures are different from each other .

In an embodiment of the new creation, the number of curved 稜珡 structures on one of the above-mentioned multiple strip structures is multiple, and the number of the multiple curved 稜 珡 structures on one of the multiple strip structures is The area of the first light-receiving surface gradually increases along the first direction from close to the light-incident surface to away from the light-incident surface, and the area of the plurality of second light-receiving surfaces of the plurality of curved scalloped structures increases along the first direction from close to the light-incident surface gradually increase from the surface farther away from the incident light.

In an embodiment of the present invention, the arrangement density of the above-mentioned plurality of curved meridian structures gradually increases along the first direction from close to the light-incident surface to away from the light-incident surface.

In an embodiment of the new creation, the area of the first light-receiving surface of each of the above-mentioned curved pleated structures is greater than or equal to the area of the first backlight surface of each curved pleated structure, and each curved pleated structure The area of the second light-receiving surface is greater than or equal to the area of the second back-light surface of each curved 騜鏡 structure.

In an embodiment of the new creation, each of the above-mentioned curved scalloped structures is mirror-symmetrically arranged with the central axis of the strip-shaped structure as the axis of symmetry.

In an embodiment of the present invention, the above-mentioned angle between the first slope and the first surface is equal to the angle between the second slope and the first surface.

In an embodiment of the new creation, the above-mentioned strip structure is recessed into the plate body.

In an embodiment of the new creation, the above-mentioned strip structure protrudes from the board body.

Based on the above, through the strip structure and the curved rim structure, the concentrating light guide plate can not only concentrate the energy of the light beam emitted from the concentrating light guide plate, but also control the exit angle of the light beam more finely, so that the light beam It can cooperate with the film used in the backlight module to be incident at a better angle, thereby improving the forward luminance of the backlight module.

In order to make the above-mentioned features and advantages of the new creation more obvious and easy to understand, the following specific examples are given together with the attached drawings for detailed description as follows.

The aforementioned and other technical contents, features and effects of the new creation will be clearly presented in the following detailed description of a preferred embodiment with reference to the drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only directions referring to the attached drawings. Accordingly, the directional terms used are illustrative and not intended to limit the novel creation.

Reference will now be made in detail to the exemplary embodiments of the novel creation, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and descriptions to refer to the same or like parts.

For the sake of clarity, each drawing in this specification draws a first direction y, a second direction x, and a third direction z that are perpendicular to each other.

FIG. 1 is a schematic side view of a backlight module 10 according to an embodiment of the present invention. FIG. 2 is a schematic oblique view of a concentrating light guide plate 100 according to an embodiment of the present invention.

Referring to FIG. 1 and FIG. 2 , the backlight module 10 includes a light-collecting light guide plate 100 . The concentrating light guide plate 100 includes a plate body 110 . The plate body 110 has a first surface 111 , a second surface 112 , a third surface 113 , a fourth surface 114 and a light incident surface 115 , wherein the first surface 111 faces away from the second surface 112 , and the third surface 113 and the fourth surface 114 They are opposite to each other and connect the first surface 111 and the second surface 112 , and the light incident surface 115 connects the first surface 111 , the second surface 112 , the third surface 113 and the fourth surface 114 .

The backlight module 10 further includes a light source 200 disposed on the light incident surface 115 of the board body 110 to provide light beams L. As shown in FIG. For example, in this embodiment, the light source 200 may optionally include light emitting diode elements, but the invention is not limited thereto.

The backlight module 10 further includes at least one film 300 , wherein the second surface 112 of the plate body 110 is located between the first surface 111 of the plate body 110 and the at least one film 300 . In this embodiment, the first surface 111 is, for example, the bottom surface of the board body 110 , and the second surface 112 is, for example, the top surface of the board body 110 .

The concentrating light guide plate 100 further includes a plurality of strip structures 120 formed on the structure surface 110s and extending along the first direction y and arranged on the structure surface 110s along the second direction x perpendicular to the first direction y, wherein the first The direction y is perpendicular to the light incident surface 115 . In this embodiment, the structural surface 110s where the strip structures 120 are located is, for example, the first surface 111 of the board body 110 (or in other words, the bottom surface of the board body 110 ). However, the present invention is not limited thereto. In other embodiments, the structural surface 110s where the strip structures 120 are located may be the second surface 112 of the plate body 110 (or in other words, the top surface of the plate body 110 ).

Referring to FIG. 2 , each strip structure 120 includes a first slope 121 and a second slope 122 . The first slope 121 of each strip structure 120 is inclined to the first surface 111 of the board body 110 and faces the third surface 113 of the board body 110 . The included angle θ1 between the first slope 121 of each strip structure 120 and the first surface 111 of the plate body 110 is greater than or equal to 5 degrees and less than or equal to 60 degrees. The second slope 122 of each strip structure 120 is inclined to the first surface 111 of the board body 110 and faces the fourth surface 114 of the board body 110 . The direction in which the first slope 121 of each strip structure 120 is inclined relative to the first surface 111 of the plate body 110 is opposite to the direction in which the second slope 122 of each strip structure 120 is inclined relative to the first surface 111 of the plate body 110 . The included angle θ2 between the second slope 122 of each strip structure 120 and the first surface 111 of the board 110 is greater than or equal to 5 degrees and less than or equal to 60 degrees.

For example, in this embodiment, the angle θ1 between the first slope 121 of the strip structure 120 and the first surface 111 of the board 110 is the same as the angle between the second slope 122 of the strip structure 120 and the board 110 . The included angle θ2 between the first surfaces 111 can optionally be equal. Specifically, in this embodiment, the strip structure 120 may be an isosceles triangular prism. However, the present invention is not limited thereto, and in other embodiments, the strip structure may also be a cylinder of other shapes.

Please refer to FIG. 1 and FIG. 2 , the concentrating light guide plate 100 further includes a plurality of curved scalloped structures 130 . Referring to FIG. 2 , each curved slanted structure 130 is disposed on a corresponding strip structure 120 and its two ends 130 e respectively extend to the first slope 121 and the second slope 122 of the strip structure 120 where it is located.

Please refer to FIG. 2, in detail, in this embodiment, a plurality of strip structures 120 are arranged in sequence along the second direction x; The second end 130e2 and the first end 130e1 are arranged; the second end 130e2 of each curved 稜鏡 structure 130 can optionally extend to the front in addition to extending to the second slope 122 of the strip structure 120 where it is located. On the first inclined plane 121 of the strip-like structure 120; the first end 130e1 of each curved jelly-shaped structure 130 can extend to the next strip-like structure 120 in addition to extending to the first inclined plane 121 of the strip-like structure 120 where it is located. on the second slope 122 of the shape structure 120.

For example, in this embodiment, the plurality of strip structures 120 include a first strip structure 120-1, a second strip structure 120-2, a third strip structure arranged in sequence in the second direction x 120-3 and the fourth strip structure 120-4, except that the first end 130e1 of the curved jelly structure 130 disposed on the first strip structure 120-1 extends to the first slope of the first strip structure 120-1 121, and can optionally extend to the second inclined surface 122 of the second strip-shaped structure 120-2; the second end 130e2 of the curved jelly-shaped structure 130 arranged on the third strip-shaped structure 120-3 is not only extended To the second slope 122 of the third strip structure 120-3, and optionally extend to the first slope 121 of the second strip structure 120-2; set on the third strip structure 120-3 In addition to extending to the first slope 121 of the third strip-shaped structure 120-3, the first end 130e1 of the curved sliver structure 130 can optionally extend to the second slope 122 of the fourth strip-shaped structure 120-4. above; but this new creation is not limited thereto.

Please refer to FIG. 2 , in this embodiment, a plurality of curved 稜鏡 structures 130 can be respectively arranged on the first strip structure 120-1 and the third strip structure 120-3, the second strip structure 120-2 and the third strip structure 120-3 respectively. The fourth strip-shaped structure 120-4 may not be provided with a plurality of curved 稜鏡 structures 130, and the plurality of curved 稜鏡 structures 130 respectively disposed on the first strip-shaped structure 120-1 and the third strip-shaped structure 120-3 are The second strips 120-2 are separated. That is to say, in this embodiment, a plurality of curved 稜鏡 structures 130 can be arranged on an odd number of strip structures 120, but not on an even number of strip structures 120; that is, a plurality of curved 稜鏡 structures 130 It can be arranged in alternate rows, so that two adjacent rows of curved scalloped structures 130 are less likely to interfere with each other.

In addition, in the present embodiment, the arrangement density of the plurality of curved corrugated structures 130 gradually increases along the first direction y from being close to the light-incident surface 115 of the plate body 110 to being away from the light-incident surface 115 . In other words, in this embodiment, the farther away from the light-incident surface 115, the higher the arrangement density of the plurality of curved scalloped structures 130; thereby, the uniformity of light output from all parts of the second surface 112 of the concentrating light guide plate 100 can be improved. Sex; but this new creation is not limited thereto.

FIG. 3 is a schematic top view of a light-collecting light guide plate 100 according to an embodiment of the present invention.

FIG. 4 is a partially enlarged schematic view of a light-collecting light guide plate 100 according to an embodiment of the present invention. FIG. 4 corresponds to the part R of the concentrating light guide plate 100 in FIG. 3 .

FIG. 5 is a schematic cross-sectional view of a light-collecting light guide plate 100 according to an embodiment of the present invention. Fig. 5 corresponds to section line I-I' of Fig. 4 .

FIG. 6 is a schematic cross-sectional view of a light-collecting light guide plate 100 according to an embodiment of the present invention. Fig. 6 corresponds to the section line II-II' of Fig. 4 .

FIG. 7 is a schematic cross-sectional view of a light-collecting light guide plate 100 according to an embodiment of the present invention. Fig. 7 corresponds to section line III-III' of Fig. 4 .

Please refer to FIG. 2, FIG. 3 and FIG. 4, each curved 稜鏡 structure 130 has a first light-receiving surface 131a, a first backlight surface 131b, a second light-receiving surface 132a, and a second backlight surface 132b, wherein the first light-receiving surface The surface 131a faces the light incident surface 115 of the plate body 110 and connects to the first inclined surface 121 of the strip structure 120, the first backlight surface 131b faces away from the light incident surface 115 of the plate body 110 and connects to the first inclined surface 121 of the strip structure 120, The second light receiving surface 132a faces the light incident surface 115 of the plate body 110 and is connected to the second inclined surface 122 of the strip structure 120, and the second backlight surface 132b faces away from the light incident surface 115 of the plate body 110 and is connected to the strip structure 120. the second slope 122 .

Please refer to FIG. 4 and FIG. 6, the included angle α1 between the first light-receiving surface 131a of each curved 騜鏡 structure 130 and the first slope 121 of the strip structure 120 is greater than or equal to 5 degrees and less than or equal to 45 degrees. . Referring to FIG. 4 and FIG. 7 , the included angle α2 between the second light-receiving surface 132a of each curved rim structure 130 and the second inclined surface 122 of the strip structure 120 is greater than or equal to 5 degrees and less than or equal to 45 degrees. Please refer to FIG. 2 , FIG. 4 , FIG. 6 and FIG. 7 , the first light-receiving surface 131 a and the second light-receiving surface 132 a of each curved scalloped structure 130 are both planes.

Please refer to FIG. 2, FIG. 3 and FIG. 4. In this embodiment, the first light-receiving surface 131a and the first backlight surface 131b of each curved 稜鏡 structure 130 meet at the first ridge line l1, and each curved 稜鏡 structure The second light-receiving surface 132a and the second backlight surface 132b of 130 meet at the second ridgeline l2 (marked in Figure 2 and Figure 3), and the first ridgeline l1 and the second ridgeline l2 are respectively aligned with the first direction y (that is, the strip The extending directions of the structures 120 ) are staggered, and the first ridgeline l1 is connected to the second ridgeline l2.

In addition, in this embodiment, the first slope 121 and the second slope 122 of each strip structure 120 may meet at the third ridgeline l3, and the third ridgeline l3 is parallel to the first direction y. In this embodiment, the first ridgeline l1 and the second ridgeline l2 of each curved ridge structure 130 are not parallel to each other, and the first ridgeline l1 and the second ridgeline l2 of each curved ridgeline structure 130 are not parallel to a corresponding bar. The third ridgeline l3 of the shape structure 120 is staggered. In this embodiment, the shape of each strip structure 120 in a section parallel to the light-incident surface 115 (refer to FIG. 5 ) is triangular, and the curved jelly structure 130 passes through the first slope 121 of the strip structure 120 The third ridge line l3 extends to the second slope 122 .

Please refer to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , the first light-receiving surface 131 a of each curved 騜鏡 structure 130 is parallel to the section line C1 (marked in FIG. 5 ) of the light-incident surface 115 of the plate body 110 and The second direction x encloses an angle Z1 (marked in FIG. 5 ). Please refer to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 6 , the first light-receiving surface 131a of each curved 騜鏡 structure 130 is perpendicular to the light-incident surface 115 of the plate body 110 (marked in FIG. 6 ) and the section line K1 The first direction y includes an angle A1 (marked in FIG. 6 ). Please refer to FIG. 4 , FIG. 5 and FIG. 6 , in this embodiment, the angle Z1 and the angle A1 may be different.

Please refer to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , the second light-receiving surface 132a of each curved beam structure 130 is parallel to the section line C2 (marked in FIG. 5 ) of the light-receiving surface 115 of the plate body 110 and The second direction x encloses an angle Z2 (indicated in FIG. 5 ). Please refer to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 7 , the second light-receiving surface 132 a of each curved 稜鏡 structure 130 is perpendicular to the light-incident surface 115 of the board body 110 at the section line K2 (marked in FIG. 7 ) and The first direction y includes an angle A2. Please refer to FIG. 4 , FIG. 5 and FIG. 7 , in this embodiment, the angle Z2 and the angle A2 may be different.

Please refer to FIG. 2 , that is to say, in this embodiment, the inclination angle of the first light-receiving surface 131a (and/or the second light-receiving surface 132a ) of the curved 騜鏡 structure 130 relative to the xz plane can be adjusted according to actual needs. Design, the inclination angle of the first light-receiving surface 131a (and/or the second light-receiving surface 132a) of the curved yam structure 130 relative to the yz plane can also be independently designed according to actual needs, wherein the xz plane is the second direction x and the plane where the third direction z is located, and the yz plane is the plane where the first direction y and the third direction z are located. Please refer to FIG. 1 and FIG. 2 , whereby the concentrating light guide plate 100 can not only concentrate the energy of the light beam L (marked in FIG. 1 ) emitted from the second surface 112 , but also more finely regulate the output of the light beam L. The angle γ (marked in FIG. 1 ) enables the light beam L to be incident at a better incident angle γ′ in accordance with the design of the film 300 , thereby increasing the front luminance of the backlight module 10 .

Please refer to FIG. 1 and FIG. 2 , for example, in this embodiment, the number of at least one film 300 of the backlight module 10 can be selectively multiple. In this embodiment, the plurality of diaphragms 300 may include a first diaphragm 310 , a second diaphragm 320 and an upper diffuser 330 sequentially stacked on the plate body 110 along the third direction z, wherein the first diaphragm 310 The extending direction of the braided structure is intersected with the extending direction of the braided structure of the second braided sheet 320 . In this embodiment, the concentrating light guide plate 100 can control the light energy distribution field shape on the plate body 110 through the strip structure 120 and the curved beam structure 130, so that the light beam L emitted from the plate body 110 passes through the first Afterwards, the front-facing sheet 310 and the second front-facing sheet 320 can be guided to the front view direction (ie, the third direction z), thereby increasing the front luminance of the backlight module 10 . In other words, in this embodiment, through the strip structure 120 and the curved scalloped structure 130, a lower diffusion sheet can be selectively not provided between the plate body 110 and the first scalloped sheet 310 of the concentrating light guide plate 100, thereby achieving The effect of thinning the backlight module 10 .

However, the present invention is not limited thereto. In other embodiments, the number and/or types of the films 300 of the backlight module 10 can also be designed differently according to different requirements; for example, in another implementation In an example, the plurality of diaphragms 300 may also include a lower diffuser (not shown), a first diffuser 310 , a second diffuser 320 and an upper diffuser 330 stacked on the plate body 110 in sequence along the third direction z. , the strip structure 120 and the bent-shaped structure 130 of the light-collecting light guide plate 100 can also be designed for the above-mentioned plurality of diaphragms 300, so that the light beam L emitted from the plate body 110 passes through the lower diffusion sheet (not shown) and Afterwards, the first film 310 is guided to the front view direction, thereby increasing the front luminance of the backlight module 10 .

Please refer to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 5 , the first light-receiving surface 131a of each curved beam structure 130 is sandwiched between the section line C1 parallel to the light-receiving surface 115 of the plate body 110 and the second direction x. Angle Z1, and the second light-receiving surface 132a of each curved beam structure 130 forms an angle Z2 between a section line C2 parallel to the light-receiving surface 115 of the plate body 110 and the second direction x. In this embodiment, the angle Z1 and the angle Z2 can optionally be the same. However, the present invention is not limited thereto. In other embodiments, the angle Z1 and the angle Z2 may also be different, which will be illustrated in subsequent paragraphs with other figures.

Please refer to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 6 , the first light-receiving surface 131a of each curved beam structure 130 forms an angle A1 between a section line K1 perpendicular to the light-incident surface 115 and the first direction y, A section line k1 perpendicular to the light-incident surface 115 of the first backlight surface 131b of each curved backlight structure 130 forms an angle a1 with the first direction y. In this embodiment, the angle A1 may be the same as the angle a1. However, the present invention is not limited thereto. In other embodiments, the angle A1 and the angle a1 may also be different, which will be illustrated in subsequent paragraphs with other figures.

Please refer to FIG. 2 , FIG. 3 , FIG. 4 and FIG. 7 , the second light-receiving surface 132 a of each curved beam structure 130 forms an angle A2 between a section line K2 perpendicular to the light-incident surface 115 and the first direction y, A section line k2 perpendicular to the light incident surface 115 of the second backlight surface 132 b of each curved rim structure 130 forms an angle a2 with the first direction y. In this embodiment, the angle A2 may be the same as the angle a2. However, the present invention is not limited thereto. In other embodiments, the angle A2 and the angle a2 may also be different, which will be illustrated in the following paragraphs with other figures.

Please refer to FIG. 2 , FIG. 3 and FIG. 4 , in this embodiment, each curved 稜鏡 structure 130d is mirror-symmetrically arranged with the central axis 120x (marked in FIG. 2 ) of the strip structure 120 as the axis of symmetry, but This new creation is not limited to this. In this embodiment, the area of the first light-receiving surface 131a of each curved pleated structure 130 may be equal to the area of the first backlight surface 131b of the curved pleated structure 130, and the second light-receiving surface 131b of each curved pleated structure 130 The area of the surface 132 a may be equal to the area of the second backlight surface 132 b of the curved 騜鏡 structure 130 . However, the present invention is not limited thereto. In other embodiments, the area of the first light-receiving surface 131a and the area of the first backlight surface 131b of each curved 稜鏡 structure 130 may also be unequal. The area of the second light-receiving surface 132 a and the area of the second backlight surface 132 b of the structure 130 may also be different, which will be illustrated in subsequent paragraphs with other figures.

Referring to FIG. 4 and FIG. 5 , the strip structure 120 may have a dimension W in the second direction x, and the strip structure 120 may have a dimension Y in the third direction z. For example, in this embodiment, 2 μm<W<500 μm, 2 μm<Y<500 μm, but the invention is not limited thereto.

Please refer to FIG. 4 and FIG. 6, a part of the curved 稜鏡 structure 130 on the first slope 121 can have a dimension b1 in the first direction y, and a part of the curved 稜鏡 structure 130 on the first slope 121 can have a dimension b1 in the first direction y. There may be a dimension c1 in the three directions z. For example, in this embodiment, 2 μm<b1<500 μm, 2 μm<c1<500 μm, but the invention is not limited thereto.

Please refer to FIG. 4 and FIG. 7 , a part of the curved 稜鏡 structure 130 on the second slope 122 can have a dimension b2 in the first direction y, and a part of the curved 稜鏡 structure 130 on the second slope 122 can have a dimension b2 in the first direction y. There may be a dimension c2 in the three directions z. For example, in this embodiment, 2 μm<b2<500 μm, 2 μm<c2<500 μm, but the invention is not limited thereto.

It must be noted here that the following embodiments use the component numbers and part of the content of the previous embodiments, wherein the same numbers are used to denote the same or similar components, and descriptions of the same technical content are omitted. For the description of omitted parts, reference may be made to the aforementioned embodiments, and the following embodiments will not be repeated.

FIG. 8 is a schematic oblique view of a concentrating light guide plate 100A according to another embodiment of the present invention.

FIG. 9 is a schematic cross-sectional view of a light-collecting light guide plate 100A according to another embodiment of the present invention. FIG. 9 shows a cross section of the light-collecting light guide plate 100A perpendicular to the light-incident surface 115 and passing through the first light-receiving surface 131 a and the first backlight surface 131 b of the curved embossed structure 130A.

FIG. 10 is a schematic cross-sectional view of a light-collecting light guide plate 100A according to another embodiment of the present invention. FIG. 10 shows another cross-section of the light-collecting light guide plate 100A perpendicular to the light-incident surface 115 and passing through the second light-receiving surface 132 a and the second backlight surface 132 b of the curved embossed structure 130A.

The concentrating light guide plate 100A in FIG. 8, FIG. 9 and FIG. 10 is similar to the concentrating light guide plate 100 in FIG. 2, FIG. 6 and FIG. The mirror structure 130A is different from the curved rim structure 130 of the light-collecting light guide plate 100 .

Please refer to FIG. 8 and FIG. 9 , in this embodiment, the first light-receiving surface 131a of each curved beam structure 130 forms an angle A1 between a section line K1 perpendicular to the light-incident surface 115 and the first direction y, A section line k1 perpendicular to the light incident surface 115 of the first backlight surface 131b of each curved backlight structure 130 forms an angle a1 with the first direction y, and the angle A1 is different from the angle a1. In other words, in the present embodiment, the first light-receiving surface 131 a of the curved corrugated structure 130 is asymmetrical to the first backlight surface 131 b.

Please refer to FIG. 8 and FIG. 10 , in this embodiment, the second light-receiving surface 132a of each curved beam structure 130 forms an angle A2 between a section line K2 perpendicular to the light-incident surface 115 and the first direction y, A section line k2 perpendicular to the light incident surface 115 of the second backlight surface 132b of each curved backlight structure 130 forms an angle a2 with the first direction y, and the angle A2 is different from the angle a2. In other words, in the present embodiment, the second light-receiving surface 132 a of the curved corrugated structure 130 is asymmetrical to the second light-receiving surface 132 b.

Please refer to FIG. 8 and FIG. 9 , in addition, in this embodiment, the area of the first light-receiving surface 131a of each curved 稜鏡 structure 130 may be larger than the area of the first backlight surface 131b of the curved 稜鏡 structure 130 . Referring to FIG. 8 and FIG. 10 , in this embodiment, the area of the second light-receiving surface 132a of each curved 稜鏡 structure 130 may be greater than the area of the second backlight surface 132b of the curved 稜鏡 structure 130 .

Referring to FIG. 8 , the plate body 110 of the concentrating light guide plate 100A further has a fifth surface 116 opposite to the light incident surface 115 and connected to the first surface 111 , the second surface 112 , the third surface 113 and the fourth surface 114 . In this embodiment, the light beam L (refer to FIG. 1 ) can enter the concentrating light guide plate 100A from the light incident surface 115 , but not enter the concentrating light guide plate 100A from the fifth surface 116 . In other words, in this embodiment, the backlight module including the concentrating light guide plate 100A may be a single-side incident light backlight module. When the light-concentrating light guide plate 100A is used in a single-side light-incoming backlight module, preferably, the area of the first light-receiving surface 131a of the curved 稜鏡 structure 130 is larger than that of the first backlight of the curved 稜珡 structure 130. The area of the surface 131b, and the area of the second light-receiving surface 132a of the curved 騜鏡 structure 130 is greater than the area of the second backlight surface 132b of the curved 稜鏡 structure 130, but the present invention is not limited thereto. In another embodiment, when the concentrating light guide plate 100A is applied in a backlight module of double-side light input type (that is, the light beam L enters the concentrating light guide plate 100A from the light incident surface 115 and the fifth surface 116 ), preferably, the area of the first light-receiving surface 131a of the curved 稜鏡 structure 130 can be equal to the area of the first backlight surface 131b of the curved 稜鏡 structure 130, and the second light-receiving surface of the curved 稜鏡 structure 130 The area of 132a may be equal to the area of the second backlight surface 132b of the curved backlight structure 130, but the present invention is not limited thereto.

FIG. 11 is a schematic oblique view of a light-collecting light guide plate 100B according to another embodiment of the present invention.

FIG. 12 is a schematic cross-sectional view of a light-collecting light guide plate 100B according to yet another embodiment of the present invention.

The light-concentrating light guide plate 100B of FIG. 11 and FIG. 12 is similar to the aforementioned light-concentrating light guide plate 100. The light guide plate 100 has different strip structures 120 and curved ribbed structures 130 .

Please refer to FIG. 11 and FIG. 12 , in this embodiment, the first slope 121 and the second slope 122 of the strip structure 120B are asymmetrical, and the first slope 121 and the second slope 122 arranged on the strip structure 120B are The curved fret structure 130B is also asymmetric. In detail, in this embodiment, the first light-receiving surface 131a of each curved rim structure 130B forms an angle between a section line C1 parallel to the light-incident surface 115 (refer to FIG. 2 ) and the second direction x. Z1, an angle Z2 is formed between a section line C2 of the second light-receiving surface 132a parallel to the light-incident surface 115 and the second direction x, and the angle Z1 is different from the angle Z2. For example, in this embodiment, the angle Z1 may be greater than the angle Z2. However, the present invention is not limited thereto, and in other embodiments, the angle Z1 may also be smaller than the angle Z2.

FIG. 13 shows a schematic diagram of a cross-section parallel to the light-incident surface of the strip structure 120C and the curved 稜鏡 structure 130C of a light-collecting light guide plate according to an embodiment of the present invention.

Please refer to FIG. 13 , in this embodiment, each strip structure 120C further includes a top surface 123 connecting the first slope 121 and the second slope 122 . The curved rim structure 130C extends from the first slope 121 of the strip structure 120C to the second slope 122 through the top surface 123 . For example, in this embodiment, the shape of a section of the strip structure 120C parallel to the light incident surface 115 (refer to FIG. 2 ) may be a hexagon. However, the present invention is not limited thereto. In other embodiments, the shape of a section of the strip structure parallel to the light incident surface 115 (refer to FIG. 2 ) can also be other shapes. In addition, in this embodiment, the top surface 123 of the strip structure 120C has a dimension F in the second direction x, and 2 μm<F<500 μm, but the present invention is not limited thereto.

FIG. 14 shows a schematic diagram of a section parallel to the light-incident surface of the strip structure 120D and the curved 稜鏡 structure 130D of another embodiment of the light-collecting light guide plate of the present invention.

Please refer to FIG. 14 , in this embodiment, each strip structure 120D further includes a top surface 123 connecting the first inclined surface 121 and the second inclined surface 122 . The curved bulging structure 130D extends from the first slope 121 of the strip structure 120D to the second slope 122 through the top surface 123 . For example, in this embodiment, the shape of a section of the strip structure 120D parallel to the light incident surface 115 (refer to FIG. 2 ) may be trapezoidal, but the present invention is not limited thereto. In addition, in this embodiment, the top surface 123 of the strip structure 120C has a dimension F in the second direction x, and 2 μm<F<500 μm, but the present invention is not limited thereto.

FIG. 15 shows a schematic diagram of a cross-section perpendicular to the light-incident surface of a curved rim structure 130E of a concentrating light guide plate according to yet another embodiment of the present invention.

The curved 稜鏡 structure 130E in FIG. 15 is similar to the curved 稜鏡 structure 130 in FIG. 6 , the difference between the two is: in the embodiment of FIG. ) is a triangle; in the embodiment shown in FIG. 15 , the shape of a cross section of the curved 稜鏡 structure 130E perpendicular to the light incident surface 115 (refer to FIG. 2 ) is hexagonal. In the embodiment shown in FIG. 15 , the curved corrugated structure 130E further includes a top surface 131c connecting the first light-receiving surface 131a and the first backlight surface 131b. In the embodiment of FIG. 15 , the top surface 131c has a dimension E in the first direction y, and 2 μm<E<500 μm, but the present invention is not limited thereto.

FIG. 16 shows a schematic diagram of a cross-section perpendicular to the light-incident surface of the curved 稜鏡 structure 130F of the concentrating light guide plate according to yet another embodiment of the present invention.

The curved 稜鏡 structure 130F in FIG. 16 is similar to the curved 稜鏡 structure 130 in FIG. 6 , the difference between the two is that in the embodiment of FIG. ) is a triangle; in the embodiment shown in FIG. 16 , the shape of a cross section of the curved 騜鏡 structure 130F perpendicular to the light incident surface 115 (refer to FIG. 2 ) is trapezoidal. In the embodiment shown in FIG. 16 , the curved corrugated structure 130F further includes a top surface 131c connecting the first light-receiving surface 131a and the first backlight surface 131b. In the embodiment of FIG. 16 , the top surface 131c has a dimension E in the first direction y, and 2 μm<E<500 μm, but the present invention is not limited thereto.

FIG. 17 is a schematic oblique view of a light-collecting light guide plate 100G according to an embodiment of the present invention.

The concentrating light guide plate 100G in FIG. 17 is similar to the concentrating light guide plate 100 in FIG. 2 , the difference between the two is that in the embodiment in FIG. The areas are different from each other, and the areas of the second light-receiving surfaces 132 a of the plurality of curved scalloped structures 130G are different from each other.

Please refer to FIG. 17 , specifically, in this embodiment, the areas of the multiple first light-receiving surfaces 131a of the multiple curved ribbed structures 130G on the same strip structure 120 approach the light incident along the first direction y. The surface 115 gradually increases away from the light-incident surface 115, and the area of the plurality of second light-receiving surfaces 132a of the plurality of curved jelly structures 130G on the same strip structure 120 is along the first direction y from near the light-incident surface 115 to The distance away from the light incident surface 115 gradually increases.

For example, in this embodiment, the area ratio of the first light-receiving surface 131a to the first backlight surface 131b and the area of the second light-receiving surface 132a to the second backlight surface 132b of the curved 騜鏡 structure 130G can be changed to The area of the first light-receiving surface 131 a and the area of the second light-receiving surface 132 a gradually increase along the first direction y from close to the light-incident surface 115 to away from the light-incident surface 115 . However, the present invention is not limited thereto. In other embodiments, other methods can also be used to make the area of the first light-receiving surface 131a and the area of the second light-receiving surface 132a approach the light incident surface along the first direction y. 115 gradually increases away from the light-incident surface 115; for example, in another embodiment, the overall size of the curved corrugated structure 130G can be gradually increased from close to the light-incident surface 115 to away from the light-incident surface 115, so that the first The area of the light-receiving surface 131 a and the area of the second light-receiving surface 132 a gradually increase along the first direction y from close to the light-incident surface 115 to away from the light-incident surface 115 .

FIG. 18 is a schematic oblique view of a concentrating light guide plate 100H according to another embodiment of the present invention.

The concentrating light guide plate 100H in FIG. 18 is similar to the concentrating light guide plate 100 in FIG. 2, the difference between the two is that in the embodiment in FIG. 130 protrudes from the strip structure 120; in the embodiment of FIG. 18 , the strip structure 120H is recessed into the plate body 110, and the curved scalloped structure 130H is recessed into the strip structure 120H.

To sum up, the light-concentrating light guide plate according to an embodiment of the present invention includes a plate body, a plurality of strip structures, and a plurality of curved beam structures. Each strip structure includes a first slope and a second slope opposite in direction of inclination. Each curved jelly structure is disposed on one of the corresponding strip structures and its two ends respectively extend to the first slope and the second slope of the strip structure. Each curved structure has a light incident surface facing the plate body and a first light receiving surface connected to the first inclined surface, a first backlight surface facing away from the light incident surface and connected to the first inclined surface, facing the light incident surface and connected to the second The second light-receiving surface of the slope and the second backlight surface facing away from the light incident surface and connected to the second slope. The included angle between the first light-receiving surface and the first slope is greater than or equal to 5 degrees and less than or equal to 45 degrees. The included angle between the second light-receiving surface and the second slope is greater than or equal to 5 degrees and less than or equal to 45 degrees. The first light-receiving surface and the second light-receiving surface are planes.

Through the strip-like structure and the curved-shaped structure, the light-concentrating light guide plate can not only concentrate the energy of the light beam emitted from it, but also control the angle of the light beam more precisely, so that the light beam can match the light used by the backlight module. The film is incident at a better incident angle, thereby improving the forward luminance of the backlight module.

But the above-mentioned ones are only the preferred embodiments of the new creation, and should not limit the scope of the implementation of the new creation, that is, all simple equivalents made according to the patent scope of the new creation application and the content of the new creation description. Changes and modifications all still belong to the scope covered by the invention patent. In addition, any embodiment or patent scope of the present invention does not need to achieve all the purposes or advantages or features disclosed in the present invention. In addition, the abstract part and the title are only used to assist in the search of patent documents, and are not used to limit the scope of rights of this new creation. In addition, terms such as "first" and "second" mentioned in this specification or the scope of the patent application are only used to name elements (elements) or to distinguish different embodiments or ranges, and are not used to limit the number of elements. upper or lower limit.

10: Backlight module 100, 100A, 100B, 100G, 100H: Concentrating light guide plate 110: board body 110s: structural surface 111: first surface 112: second surface 113: The third surface 114: The fourth surface 115: light incident surface 116: fifth surface 120, 120B, 120C, 120D, 120H: strip structure 120x: central axis 120-1: The first strip structure 120-2: Second strip structure 120-3: The third strip structure 120-4: Fourth strip structure 121: first bevel 122: second slope 123, 131c: top surface 130, 130A, 130B, 130C, 130D, 130E, 130F, 130G, 130H: Curved 稜鏡 structure 130e: end 130e1: first end 130e2: second end 131a: the first light-facing surface 131b: the first backlight surface 132a: the second light-receiving surface 132b: second backlight surface 200: light source 300: Diaphragm 310: The first scorpion 320: The second scorpion 330: upper diffuser A1, A2, a1, a2, Z1, Z2: angle C1, C2, K1, K2, k1, k2: Truncate L: light beam l1: first ridge l2: the second ridge l3: third ridge R: local W, Y, b1, b2, c1, c2, E, F: Dimensions x: the second direction y: the first direction z: third direction θ1, θ2, α1, α2: included angle γ: exit angle γ': angle of incidence I-I', II-II', III-III': broken line

FIG. 1 is a schematic side view of a backlight module 10 according to an embodiment of the present invention. FIG. 2 is a schematic oblique view of a concentrating light guide plate 100 according to an embodiment of the present invention. FIG. 3 is a schematic top view of a light-collecting light guide plate 100 according to an embodiment of the present invention. FIG. 4 is a partially enlarged schematic view of a light-collecting light guide plate 100 according to an embodiment of the present invention. FIG. 5 is a schematic cross-sectional view of a light-collecting light guide plate 100 according to an embodiment of the present invention. FIG. 6 is a schematic cross-sectional view of a light-collecting light guide plate 100 according to an embodiment of the present invention. FIG. 7 is a schematic cross-sectional view of a light-collecting light guide plate 100 according to an embodiment of the present invention. FIG. 8 is a schematic oblique view of a concentrating light guide plate 100A according to another embodiment of the present invention. FIG. 9 is a schematic cross-sectional view of a light-collecting light guide plate 100A according to another embodiment of the present invention. FIG. 10 is a schematic cross-sectional view of a light-collecting light guide plate 100A according to another embodiment of the present invention. FIG. 11 is a schematic oblique view of a light-collecting light guide plate 100B according to another embodiment of the present invention. FIG. 12 is a schematic cross-sectional view of a light-collecting light guide plate 100B according to yet another embodiment of the present invention. FIG. 13 shows a schematic diagram of a cross-section parallel to the light-incident surface of the strip structure 120C and the curved 稜鏡 structure 130C of a light-collecting light guide plate according to an embodiment of the present invention. FIG. 14 shows a schematic diagram of a section parallel to the light-incident surface of the strip structure 120D and the curved 稜鏡 structure 130D of another embodiment of the light-collecting light guide plate of the present invention. FIG. 15 shows a schematic diagram of a cross-section perpendicular to the light-incident surface of a curved rim structure 130E of a concentrating light guide plate according to yet another embodiment of the present invention. FIG. 16 shows a schematic diagram of a cross-section perpendicular to the light-incident surface of the curved 稜鏡 structure 130F of the concentrating light guide plate according to yet another embodiment of the present invention. FIG. 17 is a schematic oblique view of a light-collecting light guide plate 100G according to an embodiment of the present invention. FIG. 18 is a schematic oblique view of a concentrating light guide plate 100H according to another embodiment of the present invention.

100: Concentrating light guide plate

110: board body

110s: structural surface

111: first surface

112: second surface

113: The third surface

114: The fourth surface

115: light incident surface

120: strip structure

120x: central axis

120-1: The first strip structure

120-2: Second strip structure

120-3: The third strip structure

120-4: Fourth strip structure

121: first bevel

122: second slope

130: Curved 稜鏡 structure

130e: end

130e1: first end

130e2: second end

131a: the first light-facing surface

131b: the first backlight surface

132a: the second light-receiving surface

132b: second backlight surface

l1: first ridge

l2: the second ridge

l3: third ridge

x: the second direction

y: the first direction

z: third direction

θ1, θ2: included angle

Claims (20)

A light-collecting light guide plate, comprising: a plate body having a first surface, a second surface, a third surface, a fourth surface and a light incident surface, wherein the first surface faces away from the second surface , the third surface and the fourth surface are opposite to each other and connect the first surface and the second surface, and the light incident surface connects the first surface, the second surface, the third surface and the fourth surface; a plurality of strip structures formed on the first surface and extending along a first direction, and arranged on the first surface along a second direction perpendicular to the first direction, wherein the first direction is perpendicular to the smooth surface, and each of the strip structures includes: a first slope inclined to the first surface and facing the third surface, wherein the included angle between the first slope and the first surface is greater than Or equal to 5 degrees and less than or equal to 60 degrees; and a second slope inclined to the first surface and facing the fourth surface, wherein the direction of the first slope relative to the first surface is opposite to the second slope The direction in which the first surface is inclined is opposite, and the angle between the second inclined surface and the first surface is greater than or equal to 5 degrees and less than or equal to 60 degrees; Each of the 稜鏡 structures is arranged on one of the strip-shaped structures and its two ends respectively extend to the first slope and the second slope of the one of the strip-shaped structures, and the curved 稜鏡 structures Each of them has a first light-receiving surface facing the light incident surface and connected to the first inclined surface, a first backlight surface facing away from the light incident surface and connected to the first inclined surface, facing the light incident surface and connected to the first light-receiving surface A second light-receiving surface of the second inclined surface and a second second light-receiving surface facing away from the light-incident surface and connecting the second inclined surface On the backlight surface, the angle between the first light-receiving surface and the first slope is greater than or equal to 5 degrees and less than or equal to 45 degrees, and the angle between the second light-receiving surface and the second slope is greater than or equal to Or it is equal to 5 degrees and less than or equal to 45 degrees, and the first light-receiving surface and the second light-receiving surface of each of the curved beam structures are planes. The light-collecting light guide plate as described in claim 1, wherein the first light-facing surface and the first backlight surface of each of the curved 稜鏡 structures meet at a first ridgeline, and the curved 稜鏡 structures The second light-receiving surface and the second backlight surface of each meet at a second ridgeline, the first ridgeline and the second ridgeline intersect with the first direction respectively, and the first ridgeline and the second ridgeline are in the same direction. connect. The light-collecting light guide plate according to claim 2, wherein the first slope and the second slope of each of the strip structures meet at a third ridgeline, and the third ridgeline is parallel to the first direction . The light-collecting light guide plate as described in claim 1, wherein each of the strip structures further includes: a top surface connecting the first slope and the second slope, wherein the curved slant structures Each of the strip structures extends from the first slope to the second slope through the top surface. The light-collecting light guide plate according to claim 1, wherein the strip structures include a first strip structure, a second strip structure and a third strip structure arranged in sequence in the second direction , the curved structures are respectively arranged on the first strip structure and the third strip structure, and the second strip structure is not provided with the curved edges a mirror structure, and the curved jelly structures respectively disposed on the first strip structure and the third strip structure are separated by the second strip structure. The light-concentrating light guide plate as described in Claim 5, wherein the curved scalloped structures respectively arranged on the first strip-shaped structure and the third strip-shaped structure respectively extend to the second strip-shaped structure The second slope and the first slope. The light-collecting light guide plate as described in Claim 1, wherein the first light-receiving surface of each of the curved scalloped structures forms an angle ( Z1), the first light-receiving surface of each of the curved beam structures forms an angle (A1) between a section line perpendicular to the light-incident surface and the first direction, and the angle (Z1) and the The angle (A1) is different. The light-concentrating light guide plate as described in claim 7, wherein the second light-receiving surface of each of the curved beam structures forms an angle between a section line parallel to the light-incident surface and the second direction ( Z2), the second light-receiving surface of each of the curved beam structures forms an angle (A2) with the first direction on a section line perpendicular to the light-receiving surface, and the angle (Z2) and the The angle (A2) is different. The light-collecting light guide plate as described in Claim 1, wherein the first light-receiving surface of each of the curved scalloped structures forms an angle ( Z1), the second light-receiving surface of each of the curved beam structures forms an angle (Z2) between a section line parallel to the light-incident surface and the second direction, and the angle (Z1) and the The angle (Z2) is different. The light-collecting light guide plate as described in claim 1, wherein the first light-receiving surface of each of the curved scalloped structures is between a section line perpendicular to the light-incident surface and The first direction includes an angle (A1), and the first backlight surface of each of the curved beam structures forms an angle (a1) between a section line perpendicular to the light incident surface and the first direction, and The angle (A1) is different from the angle (a1). The light-concentrating light guide plate as described in claim 10, wherein the second light-receiving surface of each of the curved beam structures forms an angle ( A2), the second backlight surface of each of the curved beam structures forms an angle (a2) between a section line perpendicular to the light incident surface and the first direction, and the angle (A2) and the angle (a2) is different. The light-collecting light guide plate according to claim 1, wherein the areas of the first light-receiving surfaces of the curved 稜鏡 structures are different from each other, and the areas of the second light-receiving surfaces of the curved 稜鏡 structures different from each other. The light-concentrating light guide plate as described in claim 1, wherein the number of the curved ribbed structures on the one of the strip-shaped structures is multiple, and the curved edges on the one of the strip-shaped structures The area of the first light-receiving surfaces of the mirror structure gradually increases along the first direction from close to the light-incident surface to far away from the light-incident surface, and the area of the second light-receiving surfaces of the curved 騜鏡 structures increases along the first direction. The first direction gradually increases from close to the light incident surface to away from the light incident surface. The light-concentrating light guide plate as claimed in claim 1, wherein the density of the curved embossed structures gradually increases along the first direction from close to the light-incident surface to away from the light-incident surface. The light-collecting light guide plate as described in claim 1, wherein the area of the first light-receiving surface of each of the curved ridge structures is greater than or equal to the curved edges The area of the first backlight surface of each of the mirror structures, and the area of the second light-receiving surface of each of the curved pleated structures is greater than or equal to the second backlight of each of the curved pleated structures The area of the face. The light-collecting light guide plate according to claim 1, wherein each of the curved scalloped structures is mirror-symmetrically arranged with the central axis of each of the strip-shaped structures as a symmetry axis. The concentrating light guide plate according to claim 1, wherein the angle between the first slope and the first surface is equal to the angle between the second slope and the first surface. The concentrating light guide plate according to claim 1, wherein the strip structures are recessed into the plate body. The concentrating light guide plate according to claim 1, wherein the strip structures protrude from the plate body. A backlight module, including: a light-collecting light guide plate, including: a plate body, with a first surface, a second surface, a third surface, a fourth surface and a light incident surface, wherein the first The surface faces away from the second surface, the third surface and the fourth surface are opposite to each other and connect the first surface and the second surface, and the light incident surface connects the first surface, the second surface, the third surface surface and the fourth surface; a plurality of strip structures formed on a structural surface and extending along a first direction and arranged on the structural surface along a second direction perpendicular to the first direction, wherein The structure surface is the first surface or the second surface, the first direction is perpendicular to the light-incident surface, and each of the strip structures includes: a first inclined surface, inclined to the structure surface and facing the The third surface, wherein the angle between the first slope and the structured surface is greater than or equal to 5 degrees and less than or equal to 60 degrees; and a second slope, inclined to the structured surface and facing the fourth surface, wherein The direction in which the first inclined surface is inclined relative to the structural surface is opposite to the direction in which the second inclined surface is inclined relative to the structural surface, and the angle between the second inclined surface and the structural surface is greater than or equal to 5 degrees and less than or equal to 60 degrees; and a plurality of curved 稜鏡 structures, wherein each of the curved 稜鏡 structures is disposed on one of the strip-shaped structures and its two ends respectively extend to the one of the strip-shaped structures On the first inclined plane and the second inclined plane, each of the curved jelly structures has a first light receiving surface facing the light incident surface and connected to the first inclined plane, facing away from the light incident surface and connected to the first light receiving surface. A first backlight surface of the slope, a second light reception surface facing the light incident surface and connected to the second slope, and a second backlight surface facing away from the light incident surface and connected to the second slope, the first light reception surface The included angle between the light surface and the first inclined surface is greater than or equal to 5 degrees and less than or equal to 45 degrees, and the included angle between the second light-receiving surface and the second inclined surface is greater than or equal to 5 degrees and less than or equal to It is equal to 45 degrees, and the first light-receiving surface and the second light-receiving surface of each of the curved beam structures are planes; a light source is arranged on the light-receiving surface of the plate to provide a light beam; as well as At least one membrane, wherein the second surface is located between the first surface and the at least one membrane.

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