Light guide plate, backlight module, liquid crystal display panel and light guide plate mold

Abstract

The utility model discloses a light guide plate, a backlight module, a liquid crystal display panel and a light guide plate mold. In a first reflecting area of a reflecting surface of the light guide plate, the reflecting surface comprises a plurality of reflecting elements, each reflecting element comprises a first convex surface and a second convex surface which protrude in the direction away from a light emitting surface, the first convex surfaces and the second convex surfaces intersect, and the maximum distance between the boundary line where the first convex surfaces and the second convex surfaces intersect and the light emitting surface is a first distance; the maximum distance between the edge, away from the second convex surface, of the first convex surface and the light emitting surface is a second distance, and the first distance is larger than the second distance. The light emitting surface of the light guide plate comprises a plurality of first protrusions, each first protrusion comprises a pair of first sub-protrusions and a first sub-arc-shaped protrusion, the two first sub-protrusions are located on the two sides of the edge of the second hole respectively, and the two ends of the first sub-arc-shaped protrusion are connected with the ends, away from the light incident surface, of the first sub-protrusions respectively. The first sub-arc-shaped protrusion is located on the side, away from the light incident face, of the second hole edge. Therefore, the brightness of the area behind the hole can be improved.

Description

Technical Field

[0001] The embodiments of the utility model relate to a light guide plate, a backlight module, a liquid crystal display panel and a light guide plate mold. Background Art

[0002] The light guide plate (LGP) in the liquid crystal display panel is a key optical component. Its main function is to convert the linear light source from the side or bottom into a uniform surface light source to provide uniform backlight for the liquid crystal panel.

[0003] The high screen-to-body ratio of full-screen phones is one of the key technical directions for the development of mobile phones using liquid crystal display (LCD) technology, and is also one of the powerful drivers for catching up with mobile phones using organic light-emitting diode (OLED) technology. The openings in the full-screen have an important impact on the full-screen, and the improvement and optimization of the brightness uniformity of the opening area and other performance can bring consumers a better visual experience. Utility Model Content

[0004] At least one embodiment of the utility model provides a light guide plate, comprising a light incident surface, a light emitting surface intersecting with the light incident surface, and a reflective surface arranged opposite to the light emitting surface, and further comprising an opening, wherein the opening comprises a first hole edge located on the reflective surface, the reflective surface comprises a first reflective region, the first reflective region is located on a side of the first hole edge away from the light incident surface, an orthographic projection of the first reflective region on the light incident surface overlaps with an orthographic projection of the first hole edge on the light incident surface, within the first reflective region, the reflective surface comprises a plurality of reflective elements, the reflective elements comprise a first convex surface and a second convex surface convex in a direction away from the light emitting surface, the first convex surface and the second convex surface intersect, a maximum distance between an edge line where the first convex surface and the second convex surface intersect and the light emitting surface is a first distance, a maximum distance between an edge of the first convex surface away from the second convex surface and the light emitting surface is a second distance, and the first distance is greater than The second distance, and / or the opening also includes a second hole edge located on the light-emitting surface, the light-emitting surface includes a plurality of protrusions, the plurality of protrusions include a plurality of first protrusions, each of the first protrusions includes a pair of first sub-protrusions and a first sub-arc protrusion, along the first direction, the two first sub-protrusions of the pair of first sub-protrusions are respectively located on both sides of the second hole edge, the pair of first sub-protrusions extend along the second direction, the first direction is parallel to the light-entering surface, the second direction is parallel to the light-emitting surface and perpendicular to the first direction, a virtual line passing through the end of the first sub-protrusion away from the light-entering surface and parallel to the first direction passes through the second hole edge, the two ends of the first sub-arc protrusion are respectively connected to the ends of the pair of first sub-protrusions away from the light-entering surface, the first sub-arc protrusion is located on the side of the second hole edge away from the light-entering surface, and the first sub-arc protrusions of the plurality of first protrusions are arranged at intervals.

[0005] For example, in the light guide plate provided in one embodiment of the present invention, the opening includes a first hole edge located on the reflective surface, the reflective surface includes a first reflective area, the first reflective area is located on the side of the first hole edge away from the light incident surface, the orthographic projection of the first hole edge on the light incident surface falls within the orthographic projection of the first reflective area on the light incident surface, and within the first reflective area, the reflective surface includes a plurality of reflective elements, the reflective elements include a first convex surface and a second convex surface protruding away from the light emitting surface, the first convex surface and the second convex surface intersect, the maximum distance between the edge line where the first convex surface and the second convex surface intersect and the light emitting surface is a first distance, the maximum distance between the edge of the first convex surface away from the second convex surface and the light emitting surface is a second distance, and the first distance is greater than the second distance.

[0006] For example, in the light guide plate provided in an embodiment of the present invention, the multiple reflective elements include a first reflective element, the first reflective element includes three first convex surfaces and one second convex surface, and the second convex surface intersects with the three first convex surfaces.

[0007] For example, in the light guide plate provided in an embodiment of the present invention, the gaps between the orthographic projections of the three first convex surfaces on the light emitting surface overlap with the orthographic projection of the second convex surface on the light emitting surface.

[0008] For example, in the light guide plate provided in one embodiment of the present invention, the reflective surface also includes a reflective plane, the first convex surface and the second convex surface are located on the side of the reflective plane away from the light emitting surface, the first convex surface includes a first edge located on the reflective plane, the first edge includes a first arc, the second convex surface includes a plurality of second edges located on the reflective plane, and the plurality of second edges are approximately located on the same virtual circle.

[0009] For example, in the light guide plate provided in an embodiment of the present invention, the center of the orthographic projection of the virtual circle on the light emitting surface is equidistant from the center of the orthographic projection of the first edges of the three first convex surfaces on the light emitting surface.

[0010] For example, in the light guide plate provided in an embodiment of the present invention, the diameter of the virtual circle is less than or equal to the diameter of the first edge.

[0011] For example, in the light guide plate provided in an embodiment of the present invention, the plurality of reflective elements include a second reflective element, the second reflective element includes two first convex surfaces and one second convex surface, and the second convex surface intersects with the two first convex surfaces.

[0012] For example, in the light guide plate provided in an embodiment of the present invention, the gap between the orthographic projections of the two first convex surfaces on the light emitting surface overlaps with the orthographic projection of the second convex surface on the light emitting surface.

[0013] For example, in the light guide plate provided in an embodiment of the present invention, the plurality of reflective elements include a third reflective element, and the third reflective element includes one first convex surface and one second convex surface.

[0014] For example, in the light guide plate provided in an embodiment of the present invention, the surface roughness of the first convex surface is smaller than the surface roughness of the second convex surface.

[0015] For example, in the light guide plate provided in one embodiment of the present invention, the edge of the first convex surface includes a second arc in the orthographic projection on the light emitting surface, and the length of the orthographic projection of the edge line where the first convex surface intersects the second convex surface on the light emitting surface is not greater than 0.9 times the diameter of the second arc.

[0016] For example, in the light guide plate provided in an embodiment of the present invention, the distance between the orthographic projection of the edge line where the first convex surface intersects the second convex surface on the light emitting surface and the center of the second arc is not less than 0.6 times the diameter of the second arc.

[0017] For example, in the light guide plate provided in an embodiment of the present invention, the center distance between the orthographic projections of the second convex surfaces of two adjacent reflective elements on the light emitting surface is not less than twice the diameter of the second arc.

[0018] For example, in the light guide plate provided in an embodiment of the present invention, the minimum distance between two adjacent reflective elements is greater than or equal to zero.

[0019] For example, in the light guide plate provided in one embodiment of the present invention, in the first reflection area, the reflection surface also includes reflection dots, and the reflection dots include a third convex surface protruding away from the light emitting surface, and the minimum spacing between adjacent reflection dots and the reflection element is greater than or equal to zero, and / or the minimum spacing between two adjacent reflection dots is greater than or equal to zero.

[0020] For example, in the light guide plate provided in an embodiment of the present invention, the roughness of the first convex surface of the reflective element is substantially equal to the roughness of the third convex surface of the reflective dots.

[0021] For example, in the light guide plate provided in an embodiment of the present invention, in the first reflection region, the ratio of the number of the second convex surfaces to the sum of the number of the first convex surfaces and the third convex surfaces ranges from 1 / 9 to 1 / 3.

[0022] For example, in the light guide plate provided in one embodiment of the present invention, the edge of the reflective dots includes a circle in its orthographic projection on the light emitting surface, the edge of the first convex surface includes a second arc in its orthographic projection on the light emitting surface, and the diameter of the edge of the third convex surface in its orthographic projection on the light emitting surface is equal to the diameter of the edge of the first convex surface in its orthographic projection on the light emitting surface.

[0023] For example, in the light guide plate provided in one embodiment of the present invention, the reflective surface also includes a second reflective area that at least partially surrounds the first reflective area, and in the second reflective area, the reflective surface includes a plurality of reflective dots, and the reflective dots include a third convex surface that protrudes away from the light emitting surface, and the minimum spacing between two adjacent third convex surfaces is greater than or equal to zero.

[0024] For example, in the light guide plate provided in one embodiment of the utility model, the edge of the first convex surface includes a second arc in the orthographic projection on the light emitting surface, the diameter of the second arc ranges from 40μm to 50μm, and the center distance of the second convex surfaces of two adjacent reflective elements in the orthographic projection on the light emitting surface ranges from 80μm to 100μm.

[0025] For example, in the light guide plate provided in one embodiment of the present invention, the opening includes a second hole edge located on the light emitting surface, the light emitting surface includes a plurality of protrusions, the protrusions protrude away from the reflecting surface, the plurality of protrusions include a plurality of first protrusions, each of the first protrusions includes a pair of first sub-protrusions and a first sub-arc protrusion, along the first direction, the two first sub-protrusions of the pair of first sub-protrusions are respectively located on both sides of the second hole edge, the pair of first sub-protrusions extend along the second direction, and a virtual line passing through the end of the first sub-protrusion away from the light incident surface and parallel to the first direction passes through the second hole edge, the two ends of the first sub-arc protrusion are respectively connected to the end of the pair of first sub-protrusions away from the light incident surface, the first sub-arc protrusion is located on the side of the second hole edge away from the light incident surface, and the first sub-arc protrusions of the plurality of first protrusions are arranged at intervals.

[0026] For example, in the light guide plate provided in one embodiment of the present invention, a plurality of the first sub-protrusions located on the same side of the edge of the second hole are arranged at equal intervals, and the ratio of the interval between two adjacent first sub-arc protrusions to the interval between two adjacent first sub-protrusions is in the range of 0.25-4.

[0027] For example, in the light guide plate provided in an embodiment of the present invention, the first sub-arc-shaped protrusion of the first protrusion is tangent to the pair of first sub-protrusions.

[0028] For example, in the light guide plate provided in one embodiment of the present invention, along the first direction, the multiple first sub-protrusions include a farthest first sub-protrusion that is farthest from the edge of the second hole, and along the first direction, the distance between the farthest first sub-protrusion and the edge of the second hole ranges from 1mm to 3mm.

[0029] For example, in the light guide plate provided in one embodiment of the utility model, the light emitting surface also includes a first light emitting edge, and the first light emitting edge is located on the side of the second hole edge away from the light incident surface, and the multiple protrusions also include multiple second protrusions, and each second protrusion includes a second sub-protrusion and a second sub-arc protrusion. Along the first direction, the second sub-protrusion is located on the side of the first sub-protrusion away from the second hole edge, and the end of the second sub-protrusion close to the first light emitting edge is closer to the first light emitting edge than the end of the first sub-protrusion close to the first light emitting edge, one end of the second sub-arc protrusion is connected to the end of the second sub-arc protrusion close to the first light emitting edge, and the other end of the second sub-arc protrusion is connected to the first light emitting edge, and the center of curvature of the second sub-arc protrusion is located on the side of the second sub-arc protrusion close to the second hole edge, and the second sub-arc protrusions of the multiple second protrusions are arranged at intervals.

[0030] For example, in the light guide plate provided in one embodiment of the present invention, a plurality of the second sub-protrusions located on the same side of the edge of the second hole are arranged at equal intervals, and the ratio of the interval between two adjacent second sub-arc protrusions to the interval between two adjacent second sub-protrusions is in the range of 0.25-4.

[0031] For example, in the light guide plate provided in one embodiment of the present invention, along the first direction and in the direction away from the second hole edge, the distance between the ends of the plurality of second sub-protrusions located on the same side of the second hole edge close to the first light emitting edge and the first light emitting edge becomes smaller and smaller.

[0032] For example, in the light guide plate provided in an embodiment of the present invention, the second protrusion includes a second sub-protrusion and multiple second sub-arc-shaped protrusions, and the multiple second sub-arc-shaped protrusions located on the same side of the edge of the second hole are arranged at equal intervals.

[0033] For example, in the light guide plate provided in one embodiment of the present invention, along the first direction, a plurality of second sub-protrusions located on the same side of the edge of the second hole include a farthest second sub-protrusion farthest from the edge of the second hole and a nearest second sub-protrusion closest to the edge of the second hole, and along the first direction, the distance between the farthest second sub-protrusion and the nearest second sub-protrusion ranges from 0.5mm to 5mm.

[0034] For example, in the light guide plate provided in one embodiment of the present invention, the plurality of protrusions also include a plurality of third protrusions and a plurality of fourth protrusions, the plurality of third protrusions are located on both sides of the edge of the second hole along the first direction and on the side of the second sub-protrusion away from the edge of the second hole, each of the third protrusions extends along the second direction, the plurality of fourth protrusions are located on the side of the edge of the second hole close to the light incident surface, each of the second protrusions extends along the second direction and intersects with the edge of the second hole, the first sub-protrusions of the plurality of first protrusions, the second sub-protrusions of the plurality of second protrusions, the plurality of third protrusions and the plurality of fourth protrusions are arranged at equal intervals.

[0035] For example, in the light guide plate provided in one embodiment of the present invention, the opening includes a second hole edge located on the light emitting surface, the light emitting surface includes a first light emitting edge, the first light emitting edge is located on the side of the second hole edge away from the light incident surface, and the light emitting surface includes a plurality of protrusions, the plurality of protrusions including: a plurality of fifth protrusions extending along the first direction and located on both sides of the second hole edge along the first direction, one end of the fifth protrusions intersecting with the second hole edge; a plurality of sixth protrusions extending along the first direction and located on the side of the second hole edge close to the first light emitting edge and not intersecting with the second hole edge; a plurality of seventh protrusions extending along the second direction and located on both sides of the second hole edge along the first direction; and a plurality of eighth protrusions extending along the second direction and located on the side of the second hole edge close to the first light emitting edge, one end of the eighth protrusion intersecting with the second hole edge, the seventh protrusion intersecting with the fifth protrusion and the sixth protrusion, and the eighth protrusion intersecting with the sixth protrusion.

[0036] For example, in the light guide plate provided in one embodiment of the utility model, the light emitting surface also includes a second light emitting edge and a third light emitting edge, the second light emitting edge and the third light emitting edge are respectively located on both sides of the second hole edge along the first direction, one end of the fifth protrusion located between the second hole edge and the second light emitting edge is connected to the second light emitting edge, one end of the fifth protrusion located between the second hole edge and the third light emitting edge is connected to the third light emitting edge, and both ends of the sixth protrusion are respectively connected to the second light emitting edge and the third light emitting edge.

[0037] For example, in the light guide plate provided in an embodiment of the present invention, along the second direction, the multiple fifth protrusions include a farthest fifth protrusion farthest from the first light emitting edge, the multiple sixth protrusions include a nearest sixth protrusion closest to the first light emitting edge, the end of the farthest fifth protrusion located between the second hole edge and the second light emitting edge and away from the second hole edge is a first end, the end of the farthest fifth protrusion located between the second hole edge and the third light emitting edge and away from the second hole edge is a second end, the end of the nearest sixth protrusion close to the second light emitting edge is a third end, and the end of the nearest sixth protrusion close to the third light emitting edge is a fourth end, the angle between the first virtual line connecting the first end and the third end and the first direction is in the range of 45 degrees to 90 degrees, the angle between the second virtual line connecting the second end and the fourth end and the first direction is in the range of 45 degrees to 90 degrees, and the fifth protrusion and the sixth protrusion located between the farthest fifth protrusion and the nearest sixth protrusion are also located in the area defined by the first virtual line and the second virtual line.

[0038] For example, in the light guide plate provided in an embodiment of the present invention, the interval between two adjacent protrusions of the plurality of protrusions ranges from 25 μm to 100 μm, and the height of the plurality of protrusions ranges from 0.3 μm to 2 μm.

[0039] At least one embodiment of the present invention provides a backlight module, comprising the light guide plate and a light source as described in any one of the above items, wherein the light source is located on one side of the light incident surface of the light guide plate.

[0040] At least one embodiment of the present invention provides a liquid crystal display panel, comprising the above-mentioned backlight module and a liquid crystal display module, wherein the liquid crystal display module is located on one side of the light emitting surface of the light guide plate.

[0041] At least one embodiment of the utility model provides a light guide plate mold for the above-mentioned light guide plate, comprising a first surface and a second surface opposite to each other, the first surface comprising a plurality of molding grooves recessed toward the second surface to form the plurality of reflective elements of the light guide plate at the plurality of molding grooves, each of the molding grooves comprising a first concave surface and a second concave surface to form the first convex surface and the second convex surface of the reflective element at the first concave surface and the second concave surface, the first concave surface and the second concave surface intersect, the maximum distance between the edge line where the first concave surface and the second concave surface intersect and the second surface is a third distance, the maximum distance between the edge of the first concave surface away from the second concave surface and the second surface is a fourth distance, and the third distance is smaller than the fourth distance.

[0042] For example, in the light guide plate mold provided in an embodiment of the present invention, the multiple molding grooves include a first molding groove, the first molding groove includes three first concave surfaces and one second concave surface, and the second concave surface intersects with the three first concave surfaces.

[0043] For example, in the light guide plate mold provided in one embodiment of the utility model, the first surface also includes a molding plane, the first concave surface and the second concave surface are located on the side of the molding plane close to the second surface, the first concave surface includes a first molding edge located on the molding plane, the first molding edge includes an arc, and the second concave surface includes a plurality of second molding edges located on the molding plane, and the plurality of second molding edges are approximately located on the same molding virtual circle.

[0044] For example, in the light guide plate mold provided in an embodiment of the present invention, the diameter of the molding virtual circle is less than or equal to the diameter of the first molding edge.

[0045] For example, in the light guide plate mold provided in one embodiment of the utility model, the plurality of molding grooves also include a second molding groove, the second molding groove includes two second concave surfaces and one second concave surface, and / or the plurality of molding grooves also include a third molding groove, the third molding groove includes one second concave surface and one second concave surface.

[0046] In the light guide plate provided by the embodiment of the utility model, the intersecting first convex surface and the second convex surface of the reflective element can make the reflective element have a larger reflective surface, and the reflective surface of the reflective element accounts for a larger area per unit area, thereby increasing the reflection efficiency of the light guide plate in the first reflective area. By setting a plurality of first protrusions, the backlight source on the light incident surface side can be introduced to the side of the second hole edge away from the light incident surface through the first sub-protrusion and the first sub-arc-shaped protrusion, thereby improving the brightness of the area on the side of the second hole edge away from the light incident surface. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings of the embodiments will be briefly introduced below. Obviously, the drawings in the following description only relate to some embodiments of the present utility model, rather than limiting the present utility model.

[0048] Figure 1 is a structural schematic diagram of a liquid crystal display panel;

[0049] Figure 2 A display defect image of a rear hole area of ​​a display panel and an optical simulation image of the hole periphery;

[0050] Figure 3A schematic diagram of the structure of a light guide plate provided in an embodiment of the utility model;

[0051] Figure 4 for Figure 3 A schematic structural diagram of a first reflection area;

[0052] Figure 5 for Figure 4 A partial enlarged view of the reflective element in FIG.

[0053] Figure 6 for Figure 4 A projection schematic diagram of a reflective element;

[0054] Figure 7 yes Figure 6 A schematic cross-sectional view of a reflective element along the illustrated section line EE;

[0055] Figure 8 A schematic diagram of the structure of another reflective element provided in an embodiment of the utility model;

[0056] Fig. 9 A partial enlarged view of a reflective dot provided in an embodiment of the utility model;

[0057] Fig.10 A product schematic diagram of a light guide plate provided by an embodiment of the utility model;

[0058] Fig.11 is a schematic diagram of a light emitting surface of a light guide plate;

[0059] Fig.12 for Figure 3 A schematic top view of a light emitting surface of a light guide plate;

[0060] Fig.13 for Fig.12 A schematic cross-sectional view of a light guide plate along a section line FF;

[0061] Fig.14 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate;

[0062] Fig.15 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate;

[0063] Fig.16 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate;

[0064] Fig.17 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate;

[0065] Fig.18 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate;

[0066] Fig.19 for Fig.18 A partial enlarged schematic diagram of a light emitting surface of a light guide plate;

[0067] Fig. 20 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate;

[0068] Fig.21 A schematic diagram of the improved effect of a display panel using a light guide plate provided by an embodiment of the utility model;

[0069] Fig. 22 A schematic diagram of a backlight module provided by an embodiment of the utility model;

[0070] Fig.23 A schematic diagram of a liquid crystal display panel provided by an embodiment of the utility model;

[0071] Fig.24 A projection schematic diagram of a light guide plate mold provided by an embodiment of the utility model;

[0072] Fig.25 for Fig.24 A schematic cross-sectional view of a light guide plate mold along a section line GG;

[0073] Fig.26 Another structural schematic diagram of the molding groove of the light guide plate mold provided by the embodiment of the utility model;

[0074] Fig. 27 Another structural schematic diagram of the molding groove of the light guide plate mold provided by the embodiment of the utility model;

[0075] Fig.28 A flowchart of a method for manufacturing a light guide plate mold provided by an embodiment of the utility model; and

[0076] Fig.29 It is a partial structural schematic diagram of a light guide plate mold formed according to the manufacturing method of the utility model. DETAILED DESCRIPTION

[0077] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution of the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings of the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the described embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0078] Unless otherwise defined, the technical or scientific terms used in the present invention shall have the usual meanings understood by persons with ordinary skills in the field to which the present invention belongs. The words "first", "second" and similar terms used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. Words such as "include" or "comprise" and the like mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Words such as "connect" or "connected" and the like are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0079] Unless otherwise defined, the features such as "parallel", "perpendicular" and "same" used in the embodiments of the present invention include the situations of "parallel", "perpendicular", "same" in a strict sense, as well as the situations of "approximately parallel", "approximately perpendicular", "approximately the same", etc., which contain certain errors. For example, the above-mentioned "approximately" may mean that the difference of the compared objects is within 10% or 5% of the average value of the compared objects. When the number of a component or element is not specifically indicated in the following text of the embodiments of the present invention, it means that the component or element may be one or more, or may be understood as at least one. "At least one" refers to one or more, and "multiple" refers to at least two. The "same-layer arrangement" in the embodiments of the present invention refers to the relationship between multiple film layers formed by the same material after the same step (for example, a one-step patterning process). The "same layer" here does not always mean that the thickness of multiple film layers is the same or the height of multiple film layers in the cross-sectional view is the same.

[0080] Figure 1 Schematic diagram of the structure of a liquid crystal display panel. Figure 1As shown, the liquid crystal display panel includes a glass cover plate 01, an optical glue 02, a polarizer 031 and a polarizer 032, a liquid crystal box 04, a glue frame 05, an iron frame 06, a reflector 07, a light guide plate 08, a diffuser 09, a light-enhancing film 010, a light-shielding glue 011, and a glue coating 012. The glass cover plate 01 is used to protect the liquid crystal box 04 and reduce the risk of screen damage. The optical glue 02 can be a double-sided adhesive tape without a matrix material, which bonds the glass cover plate 01 and the liquid crystal box 04 together. The polarizer 031 and the polarizer 032 are optical devices that play a polarizing role and are used to generate usable polarized light. The liquid crystal box 04 is composed of a color film layer, a pixel driving circuit layer, and a liquid crystal layer, and is the core display imaging component of the liquid crystal display panel. The glue frame 05 and the iron frame 06 play a supporting and fixing role. The reflector 07 can reflect the light transmitted from the light guide plate 08 to increase the brightness of the module. The light guide plate 08 plays a role in light transmission, converting the LED point light source into a surface light source. The diffuser 09 can disperse the light transmitted from the light guide plate 08 to display more evenly. The light enhancement sheet 010 can converge the light and increase the backlight brightness. The light shielding glue 011 can block the edge light of the opening 013 and fix the film material and the liquid crystal box 04, etc. The glue coating 012 can block the light of the backlight module to prevent light leakage.

[0081] For LCD display panels with edge-entry backlight sources, the reflective surface of the light guide plate is usually provided with a plurality of regular convex surfaces arranged at intervals or closely arranged, and the projection of the regular convex surfaces on the light-emitting surface of the light guide plate is circular. Since the light source is blocked and blocked by the structure at the opening, the light behind the hole of the display panel, which is far away from the backlight source, is sparse, and the display behind the hole has problems such as darker display and uneven display, which causes customer complaints. Moreover, the smaller the size of the area behind the hole, the more serious the problem of the area behind the hole.

[0082] Figure 2 It is a display defect image of the area behind the hole of a display panel and an optical simulation image of the area around the hole. Figure 2 The arrow-indicated position 015 in (a) shows a dark area with lower brightness than other areas in the area behind the hole. Figure 2 (b) shows the optical simulation of the area behind the hole. It can be seen that the light in the area behind the hole is sparse, resulting in low brightness in the area behind the hole.

[0083] The embodiment of the utility model provides a light guide plate. The light guide plate includes a light incident surface, a light emitting surface intersecting with the light incident surface, and a reflective surface arranged opposite to the light emitting surface, and also includes an opening. The opening includes a first hole edge located on the reflective surface, the reflective surface includes a first reflective region, the first reflective region is located on a side of the first hole edge away from the light incident surface, the orthographic projection of the first reflective region on the light incident surface overlaps with the orthographic projection of the first hole edge on the light incident surface, within the first reflective region, the reflective surface includes a plurality of reflective elements, the reflective element includes a first convex surface and a second convex surface protruding in a direction away from the light emitting surface, the first convex surface and the second convex surface intersect, the maximum distance between the edge line where the first convex surface and the second convex surface intersect and the light emitting surface is a first distance, the maximum distance between the edge of the first convex surface away from the second convex surface and the light emitting surface is a second distance, and the first distance is greater than the second distance.

[0084] The convex surface on the reflective surface can gather the light emitted by the light source. The larger the area of ​​the convex surface, the higher the brightness of the backlight module where the light guide plate is located. By arranging a reflective element in the first reflective area, the reflective element has a first convex surface and a second convex surface that intersect, and the first distance from the edge of the intersection of the first convex surface and the second convex surface to the light-emitting surface is greater than the second distance from the edge of the first convex surface away from the second convex surface to the light-emitting surface. Compared with a plurality of independent conventional convex surfaces arranged at intervals, the first convex surface and the second convex surface of the reflective element are intersected, and the intersecting first convex surface and the second convex surface of the reflective element can make the reflective element have a larger area of ​​the reflective surface, and the area of ​​the reflective surface of the reflective element per unit area is larger, which increases the reflection efficiency of the light guide plate in the first reflective area, improves the brightness of the display panel in the first reflective area, and improves the display effect and display uniformity of the display panel in the first reflective area. In addition, the second convex surface can also utilize the space between adjacent first convex surfaces so that the reflective element has a larger area of ​​reflection. Improving the reflection efficiency of the first reflection area by using the reflection element does not involve an increase in material cost and manufacturing cost, and does not require an additional avoidance space for the module where the light guide plate is located or the display panel.

[0085] The opening also includes a second hole edge located on the light emitting surface, the light emitting surface includes a plurality of protrusions, the plurality of protrusions include a plurality of first protrusions, each first protrusion includes a pair of first sub-protrusions and a first sub-arc protrusion, along the first direction, the two first sub-protrusions of a pair of first sub-protrusions are respectively located on both sides of the second hole edge, the pair of first sub-protrusions extend along the second direction, the first direction is parallel to the light incident surface, the second direction is parallel to the light emitting surface and perpendicular to the first direction, a virtual line passing through the end of the first sub-protrusion away from the light incident surface and parallel to the first direction passes through the second hole edge, the two ends of the first sub-arc protrusion are respectively connected to the ends of the pair of first sub-protrusions away from the light incident surface, the first sub-arc protrusion is located on the side of the second hole edge away from the light incident surface, and the first sub-arc protrusions of the plurality of first protrusions are arranged at intervals.

[0086] By setting up multiple first protrusions, the backlight source on one side of the light incident surface can be introduced to the side of the second hole edge away from the light incident surface through the first sub-protrusion and the first sub-arc protrusion, thereby improving the brightness of the area on the side of the second hole edge away from the light incident surface, increasing the brightness of the display panel in this area, and improving the display effect and display uniformity of the display panel in this area.

[0087] The embodiment of the utility model provides a light guide plate mold for making a light guide plate. The light guide plate mold includes a first surface and a second surface opposite to each other, the first surface includes a plurality of molding grooves recessed toward the second surface to form a plurality of reflective elements of the light guide plate mentioned above at the plurality of molding grooves, and each molding groove includes a first concave surface and a second concave surface to form a first convex surface and a second convex surface of the reflective element of the light guide plate at the first concave surface and the second concave surface. The first concave surface and the second concave surface intersect, and the maximum distance between the edge line where the first concave surface and the second concave surface intersect and the second surface is a third distance, and the maximum distance between the edge of the first concave surface away from the second concave surface and the second surface is a fourth distance, and the third distance is less than the fourth distance. The light guide plate mold provided by the embodiment of the utility model can form the light guide plate mentioned above, so that the light guide plate mold has the beneficial technical effects corresponding to the beneficial technical effects of the light guide plate mentioned above, which will not be repeated here.

[0088] Hereinafter, the light guide plate, the backlight module, the liquid crystal display panel, the light guide plate mold and the manufacturing method thereof provided by the embodiments of the utility model will be described in detail with reference to the accompanying drawings.

[0089] An embodiment of the utility model provides a light guide plate. Figure 3 A schematic diagram of the structure of a light guide plate provided in an embodiment of the utility model; Figure 4 for Figure 3 A schematic structural diagram of a first reflection area; Figure 5 for Figure 4 A partial enlarged view of the reflective element in FIG. Figure 6 for Figure 4 A projection schematic diagram of a reflective element; Figure 7 yes Figure 6 A cross-sectional schematic diagram of the reflective element along the illustrated section line EE. It should be noted that in order to more clearly illustrate the reflective element 110, Figure 4 Only the reflective element 110 in the first reflective region R1 is schematically shown, and the reflective structure in the second reflective region R2 is omitted.

[0090] like Figures 3 to 7As shown, the light guide plate 100 includes a light incident surface S1, a light emitting surface S2 intersecting the light incident surface S1, and a reflective surface S3 arranged opposite to the light emitting surface S2, and also includes an opening H. The opening H includes a first hole edge H1 located on the reflective surface S3, the reflective surface S3 includes a first reflective region R1, the first reflective region R1 is located on a side of the first hole edge H1 away from the light incident surface S1, and the orthographic projection of the first reflective region R1 on the light incident surface S1 overlaps with the orthographic projection of the first hole edge H1 on the light incident surface S1.

[0091] In the first reflective region R1 , the reflective surface S3 includes a plurality of reflective elements 110 . The reflective element 110 includes a first convex surface 111 and a second convex surface 112 that protrude in a direction away from the light emitting surface S2 . Figure 5 Schematically shows that the reflective element 110 includes three first convex surfaces 111 and one second convex surface 112 , however, the present invention does not limit the number of the first convex surfaces.

[0092] The first convex surface 111 and the second convex surface 112 intersect, and the maximum distance between the edge line 113 where the first convex surface 111 and the second convex surface 112 intersect and the light emitting surface S2 is a first distance D1. The maximum distance between the edge of the first convex surface 111 away from the second convex surface 112 and the light emitting surface S2 is a second distance D2. The first distance D1 is greater than the second distance D2.

[0093] The convex surface on the reflective surface can gather the light emitted by the light source. The larger the area of ​​the convex surface, the higher the brightness of the backlight module where the light guide plate is located. A reflective element is arranged in the first reflective area, and the reflective element has a first convex surface and a second convex surface that intersect each other. The first distance from the edge line where the first convex surface and the second convex surface intersect to the light-emitting surface is greater than the second distance from the edge of the first convex surface away from the second convex surface to the light-emitting surface. Compared with multiple independent conventional convex surfaces that are arranged at intervals or even closely, the first convex surface and the second convex surface of the reflective element are intersected. The intersecting first convex surface and the second convex surface of the reflective element can make the reflective element have a larger area of ​​reflective surface, and the area of ​​the reflective surface of the reflective element per unit area accounts for a larger proportion, which increases the reflection efficiency of the light guide plate in the first reflective area, improves the brightness of the display panel in the first reflective area, and improves the display effect and display uniformity of the display panel in the first reflective area. In addition, the second convex surface can also utilize the space between adjacent first convex surfaces so that the reflective element has a larger area of ​​reflection. Improving the reflection efficiency of the first reflection area by using the reflection element does not involve an increase in material cost and manufacturing cost, and does not require an additional avoidance space for the module where the light guide plate is located or the display panel.

[0094] For example, Figure 4 and Figure 5As shown, two adjacent reflective elements 110 may be disposed adjacent to each other. Thus, the reflective efficiency of the light guide plate 100 in the first reflective region R1 may be increased. For example, the minimum spacing between two adjacent reflective elements 110 is greater than or equal to zero.

[0095] In some examples, such as Figure 3 and Figure 4 As shown, the orthographic projection of the first hole edge H1 on the light incident surface S1 falls within the orthographic projection of the first reflective area R1 on the light incident surface S1. Of course, the implementation of the utility model is not limited to this. For example, the orthographic projection of the first hole edge on the light incident surface and the orthographic projection of the first reflective area on the light incident surface may coincide with each other. For example, the orthographic projection of the first reflective area on the light incident surface may fall within the orthographic projection of the first hole edge on the light incident surface. Thus, the light extraction efficiency of the light guide plate in the area on the side of the first hole edge away from the light incident surface can be improved, and the display effect and display uniformity of this area can be improved.

[0096] For example, Figure 5 and Figure 6 As shown, the sideline 113 where the first convex surface 111 and the second convex surface 112 intersect is an arc. For example, the orthographic projection of the sideline 113 on the light-emitting surface S2 may be a straight line. However, the embodiment of the utility model is not limited to this, and the orthographic projection of the sideline 113 on the light-emitting surface S2 may also be an arc.

[0097] In some examples, such as Figures 5 to 7 As shown, the plurality of reflective elements 110 include a first reflective element 110a, and the first reflective element 110a includes three first convex surfaces 111 and one second convex surface 112, and the second convex surface 112 intersects with the three first convex surfaces 111. Thus, the reflective surface of the first reflective element 110a has a larger area and a larger area ratio, thereby increasing the reflection efficiency of the light guide plate 100. Compared with three independent conventional convex surfaces arranged at intervals, for example, the positions of the three conventional convex surfaces are substantially equal to the three first convex surfaces 111, however, the first reflective element 110a of the utility model further includes a second convex surface 112 intersecting with the three first convex surfaces 111, so that the total area of ​​the convex surface of the first reflective element 110a is larger than the sum of the areas of the three independent conventional convex surfaces, and within a unit area, the area ratio of the convex surface of the first reflective element 110a is greater than the area ratio of the convex surface of the three independent conventional convex surfaces, and therefore, the first reflective element 110a has a higher reflection efficiency. The improvement principles of the second reflective element 110b and the third reflective element 110c mentioned below are the same as those of the first reflective element 110a, and are not described in detail again.

[0098] For example, Figures 5 to 7As shown, the shapes of the three first convex surfaces 111 are substantially the same. For example, the shapes of the orthographic projections of the three first convex surfaces 111 on the light-emitting surface S2 are substantially the same. For example, the three first convex surfaces 111 are centrally symmetrical. For example, the first reflective element 110a is centrally symmetrical. Thus, the emitted light of the reflective element can be made more symmetrical and uniform, and the light emitted by the light guide plate can be made more uniform.

[0099] In some examples, such as Figure 6 As shown, the gaps between the orthographic projections of the three first convex surfaces 111 on the light-emitting surface S2 overlap with the orthographic projection of the second convex surface 112 on the light-emitting surface S2. Thus, the second convex surface 112 can increase the area of ​​the reflection surface of the first reflection element 110a, so that the reflection surface of the first reflection element 110a has a larger area and a larger area ratio, thereby increasing the reflection efficiency of the light guide plate 100.

[0100] In some examples, such as Figure 5 and Figure 7 As shown, the reflective surface S3 further includes a reflective plane S30, the first convex surface 111 and the second convex surface 112 are located on the side of the reflective plane S30 away from the light emitting surface S2, the first convex surface 111 includes a first edge 1110 located on the reflective plane S30, and the first edge 1110 includes a first arc. The second convex surface 112 includes a plurality of second edges 1120 located on the reflective plane S30, and the plurality of second edges 1120 are approximately located on the same virtual circle 001. By making the plurality of second edges 1120 approximately located on the same virtual circle 001, not only can the molding process of the reflective element 110 be simplified, but also the light emission can be made more uniform.

[0101] For example, Figure 5 As shown, the second edge 1120 is located between two adjacent first convex surfaces 111 in the same first reflective element 110a. Therefore, the second convex surface can better cover the gap between the two adjacent first convex surfaces 111, so that the first reflective element has a larger reflection area.

[0102] For example, Figure 5 As shown, the diameter of the virtual circle 001 may be equal to or smaller than the diameter of the first edge 1110. For example, the same diameters may make the light output more uniform.

[0103] For example, Figure 5 As shown, the diameter of the first edge 1110 ranges from 40 μm to 50 μm. For example, the diameter of the virtual circle 001 ranges from 40 μm to 50 μm.

[0104] In some examples, the surface roughness of the first convex surface is less than the surface roughness of the second convex surface. For example, the mold profiles forming the first convex surface and the second convex surface are formed using different molding processes. For example, a molding process can be used to first form the mold profile of the first convex surface, and then another molding process can be used to form the mold profile of the second convex surface. For example, the mold profile forming the first convex surface can be formed using a collision point process. For example, the mold profile forming the second convex surface can be formed using a laser process.

[0105] In some examples, the surface roughness of the first convex surface ranges from 0 to 1 μm, and the surface roughness of the second convex surface ranges from 1 μm to 2 μm. For example, the surface roughness may be the arithmetic mean deviation Ra of the profile.

[0106] In some examples, such as Figure 5 As shown, the first edge 1110 of the first convex surface 111 on the reflection plane S30 may be continuous. For example, the second edge 1120 of the second convex surface 112 may be discontinuous. For example, the second edge 1120 of the second convex surface 112 may be serrated. For example, the edge line 113 where the first convex surface 111 and the second convex surface 112 intersect may be discontinuous. For example, the intersecting edge line 113 may be serrated.

[0107] In some examples, such as Figure 5 and Figure 6 As shown, the orthographic projection of the edge of the first convex surface 111 on the light-emitting surface S2 includes a second arc, and the length L1 of the orthographic projection of the edge line 113 where the first convex surface 111 and the second convex surface 112 intersect on the light-emitting surface S2 is not greater than 0.9 times the diameter d1 of the second arc. By making the length L1 not greater than 0.9 times d1, the white spot problem can be avoided and the yield rate of the product can be improved. The figure schematically shows that the projection of the intersecting edge line 113 is a straight line, however, the embodiment of the utility model is not limited to this, and the projection of the intersecting edge line can also be a curve.

[0108] In some examples, such as Figure 6 As shown, the distance D3 between the orthographic projection of the edge line 113 where the first convex surface 111 and the second convex surface 112 intersect on the light exiting surface S2 and the center of the second arc is not less than 0.6 times the diameter d1 of the second arc. Thus, the white spot problem can be avoided.

[0109] In some examples, such as Figure 6 As shown, the center distance D4 of the orthographic projections of the second convex surfaces 112 of two adjacent reflective elements 110 on the light emitting surface S2 is not less than twice the diameter d1 of the second arc. Thus, the white spot problem can be avoided.

[0110] In some examples, such as Figure 6As shown, the center distance D4 of the orthographic projections of the second convex surfaces of two adjacent reflective elements on the light emitting surface ranges from 80 μm to 100 μm.

[0111] For example, Figure 5 and Figure 6 As shown, the orthographic projection of the first edge 1110 of the first convex surface 111 on the light-emitting surface S2 includes a second arc, and the diameters of the second arcs of the three first convex surfaces 111 are all equal. For example, the three first convex surfaces 111 are centrally symmetrical. For example, the first reflective element 110a is centrally symmetrical.

[0112] In some examples, such as Figure 5 and Figure 6 As shown, the first edge 1110 of the first convex surface 111 includes a first arc, the center of the orthographic projection of the first edge 1110 of the first convex surface 111 on the light-emitting surface S2 is O1, the second convex surface 112 includes a plurality of second edges 1120 located on the reflection plane S30, the plurality of second edges 1120 are approximately located on the same virtual circle 001, the center of the orthographic projection of the virtual circle 001 on the light-emitting surface S2 is O2, the center O2 of the orthographic projection of the virtual circle 001 on the light-emitting surface S2 is equidistant from the center O1 of the orthographic projection of the first edges 1110 of the three first convex surfaces 111 on the light-emitting surface S2. Thus, the second convex surface 112 can more evenly cover the gaps between the three first convex surfaces 111, which can better increase the area of ​​the reflection surface of the first reflective element 110a on the one hand, and make the light emission more uniform on the other hand.

[0113] It should be noted that the center of the orthographic projection of the virtual circle 001 on the light-exiting surface S2 may coincide with the center of the orthographic projection of the second convex surface 112 on the light-exiting surface S2. The center of the orthographic projection of the virtual circle 001 on the light-exiting surface S2 is the center of the orthographic projection of the virtual circle 001 on the light-exiting surface S2. The center of the orthographic projection of the first edge 1110 of the first convex surface 111 on the light-exiting surface S2 is the center of the orthographic projection of the circle where the first edge 1110 is located on the light-exiting surface S2.

[0114] For example, Figure 5 and Figure 6 As shown, the line connecting the three centers O1 forms an equilateral triangle, and the center point of the equilateral triangle is the center O2. For example, the minimum gap between the three first convex surfaces 111 may be zero.

[0115] For example, Figure 5 and Figure 6 As shown, the second convex surface 112 is a centrally symmetrical figure.

[0116] In some examples, the first edge of the first convex surface includes a first arc, and the edge of the second convex surface is approximately located on the same virtual circle. In the same reflective element, the center of the orthographic projection of the virtual circle on the light-emitting surface and the center of the orthographic projection of the first edges of the plurality of first convex surfaces on the light-emitting surface may not be equal. For example, such an arrangement can simplify the manufacturing process, improve the manufacturing efficiency, and improve the yield rate.

[0117] In some examples, such as Figure 6 As shown, the circles where the first edges 1110 of two adjacent first convex surfaces 111 of the same reflective element 110 are located may be tangent to each other. Thus, the number of reflective elements per unit area can be increased as much as possible.

[0118] In some examples, such as Figure 6 As shown, the radius of the orthographic projection of the first edge 1110 of the first convex surface 111 on the light-emitting surface S2 is r, and the center distance between two adjacent first convex surfaces 111 of the same reflective element 110 is D5. For example, when the circles where the first edges 1110 of two adjacent first convex surfaces 111 of the same reflective element 110 are tangent, D5=2r. The distance between the center O2 of the orthographic projection of the second convex surface 112 on the light-emitting surface S2 and the center O1 of the first convex surface 111 is

[0119] For example, the diameter of the second arc ranges from 40 μm to 50 μm.

[0120] Figure 8 A schematic diagram of the structure of another reflective element provided in an embodiment of the utility model. Figure 8 As shown in (a) and (b), the plurality of reflective elements 110 include a second reflective element 110b, Figure 8 (a) and (b) show two different arrangements of the second reflective element 110b. The second reflective element 110b includes two first convex surfaces 111 and one second convex surface 112, and the second convex surface 112 intersects with both first convex surfaces 111. Thus, the second convex surface 112 can increase the area of ​​the reflective surface of the second reflective element 110b, so that the reflective surface of the second reflective element 110b has a larger area and a larger area ratio, thereby increasing the reflection efficiency of the light guide plate 100.

[0121] In some examples, such as Figure 8 As shown in (a) and (b), the gap between the orthographic projections of the two first convex surfaces 111 on the light-emitting surface S2 overlaps with the orthographic projection of the second convex surface 112 on the light-emitting surface S2. Thus, the second convex surface 112 can increase the area of ​​the reflection surface of the second reflection element 110b, so that the reflection surface of the second reflection element 110b has a larger area and a larger area ratio, thereby increasing the reflection efficiency of the light guide plate 100.

[0122] For example, Figure 8 As shown in (a), the second convex surface 112 of the second reflective element 110b is located between the two first convex surfaces 111, and the three convex surfaces are arranged in a straight line. Figure 8 As shown in (b), the three convex surfaces of the second reflective element 110b are arranged in a triangle. The present utility model embodiment does not limit the arrangement of the three convex surfaces. For example, they can be arranged according to the shape of the space.

[0123] In some examples, such as Figure 8 As shown in (c), the plurality of reflective elements 110 include a third reflective element 110 c , and the third reflective element 110 c includes a first convex surface 111 and a second convex surface 112 .

[0124] It should be noted that the second reflecting element 110b and the third reflecting element 110c of the embodiment of the utility model are not limited to the above specific embodiments. The descriptions of the size, roughness, etc. of the first convex surface 111 and the second convex surface 112 in the second reflecting element 110b and the third reflecting element 110c can be the same as those of the first reflecting element 110a. Therefore, the relevant description of the first reflecting element 110a is also applicable to the second reflecting element 110b and the third reflecting element 110c, and will not be repeated here.

[0125] In some examples, the reflective element may include a plurality of first convex surfaces and a second convex surface. In addition to the embodiments described above, for example, the reflective element may also include four first convex surfaces and a second convex surface. For example, the reflective element may also include five first convex surfaces and a second convex surface. For example, the reflective element may also include six first convex surfaces and a second convex surface. These are not described one by one here.

[0126] In some examples, such as Figure 3 and Figure 4 As shown, in the first reflection region R1, the reflection surface S3 may include at least one of the first reflection element 110a, the second reflection element 110b and the third reflection element 110c. For example, the reflection surface S3 may be entirely the first reflection element 110a, or may include three types of reflection elements 110 or any two types of reflection elements 110. The arrangement mode, quantity, etc. of the first reflection element, the second reflection element and the third reflection element in the embodiment of the utility model are not limited. For example, a plurality of reflection elements may be arranged adjacent to each other. For example, the gap between two adjacent reflection elements may be equal to 0.

[0127] Fig. 9 This is a partial enlarged view of a reflective dot provided in an embodiment of the utility model. Fig. 9As shown, in the first reflection region R1, the reflection surface S3 further includes reflection dots 120, and the reflection dots 120 include a third convex surface 121 that protrudes away from the light emitting surface S2. For example, by setting the reflection dots in the first reflection region, the number of reflection elements can be controlled to adjust the reflectivity. For example, the size of the reflection dots is smaller than the size of the reflection element, and the reflection dots can be set at some relatively small positions, thereby increasing the effective area of ​​the convex surface in the first reflection region.

[0128] For example, Figure 6 and Fig. 9 As shown, the orthographic projection of the edge of the reflective dot 120 on the light-emitting surface S2 includes a circle. For example, the diameter of the orthographic projection of the edge of the third convex surface 121 on the light-emitting surface S2 is equal to the diameter d1 of the orthographic projection of the edge of the first convex surface 111 on the light-emitting surface S2. Thus, the light guide plate 100 can emit light more uniformly. Of course, the embodiment of the utility model is not limited to this.

[0129] In some examples, adjacent reflection dots and reflection elements may be arranged in close proximity, thereby providing more reflection surfaces in the first reflection region. For example, the minimum spacing between adjacent reflection dots and reflection elements is greater than or equal to zero.

[0130] In some examples, in the first reflection area, the reflection surface may further include a plurality of reflection dots. Two adjacent reflection dots may be arranged adjacent to each other. Thus, there may be more reflection surfaces in the first reflection area. For example, the minimum spacing between adjacent reflection dots is greater than or equal to zero.

[0131] In some examples, the roughness of the first convex surface of the reflective element is substantially equal to the roughness of the third convex surface of the reflective dots. For example, the mold profiles for forming the first convex surface and the third convex surface are formed using the same molding process.

[0132] In some examples, in the first reflective region, the ratio of the number of the second convex surfaces to the number of the first convex surfaces ranges from 1 / 9 to 1 / 3. For example, the ratio may be 1 / 6, 1 / 5, 1 / 4, etc. For example, the first convex surface is processed first, and then the second convex surface is processed. By making the ratio no greater than 1 / 3, the white spot problem can be avoided.

[0133] In some examples, in the first reflective region, the reflective surface further includes reflective dots, and the ratio of the number of the second convex surface to the sum of the number of the first convex surface and the third convex surface ranges from 1 / 9 to 1 / 3. For example, the ratio may be 1 / 6, 1 / 5, 1 / 4, etc. By making the ratio no greater than 1 / 3, the white dot problem can be avoided.

[0134] In some examples, within the first reflective area, the number of the second convex surfaces per square millimeter ranges from 100 to 300, and the sum of the number of the first convex surfaces and the third convex surfaces ranges from 300 to 900.

[0135] In some examples, such as Figure 3 As shown, the reflective surface S3 further includes a second reflective region R2 at least partially surrounding the first reflective region R1.

[0136] For example, Figure 3 and Fig. 9 As shown, in the second reflection region R2, the reflection surface S3 includes a plurality of reflection dots 120, and the reflection dots 120 include third convex surfaces 121 protruding away from the light emitting surface S2, and the minimum spacing between two adjacent third convex surfaces 121 is greater than or equal to zero.

[0137] For example, Figure 3 and Fig. 9 As shown, in the second reflection region R2 , the reflection surface S3 may be provided with only reflection dots 120 .

[0138] For example, along the direction from the light incident surface to the opening, the number of reflection dots per unit area increases, the density of the reflection dots increases, and the distance between two adjacent reflection dots decreases, so that the light incident from the light incident surface can be better reflected.

[0139] For example, the intervals between two adjacent reflective dots along the first direction are substantially equal.

[0140] For example, Fig. 9 As described above, the reflective mesh point 120 includes a third edge 1210. For example, the third edge 1210 may be a circle. For example, the first edge 1110 of the first convex surface 111 of the reflective element 110 located in the first reflective region R1 is a first arc, and the diameter of the first arc may be equal to the diameter of the third edge 1210. Thus, the processing and manufacturing of the light guide plate may be simplified, the processing and manufacturing efficiency may be improved, and the yield rate may be improved. For example, the number of first convex surfaces per unit area in the first reflective region is greater than the number of second convex surfaces per unit area in the second reflective region.

[0141] Fig.10 A schematic diagram of a light guide plate provided by an embodiment of the utility model. Fig.10 As shown, in the first reflection region, the reflection surface of the light guide plate includes a reflection element, and the reflection element includes a first convex surface 111 and a second convex surface 112. For example, the second convex surface 112 of the reflection element of the light guide plate can intersect with different numbers of first convex surfaces 111.

[0142] Fig.11 FIG. 1 is a schematic diagram of a light emitting surface of a light guide plate. Fig.11 As shown, the protrusion 014 on the light-emitting surface for conducting and gathering light is disconnected at the opening 013, and the light cannot be transmitted to the area behind the hole, resulting in poor brightness in the area behind the hole, etc.

[0143] Fig.12 for Figure 3 A schematic top view of a light emitting surface of a light guide plate; Fig.13 for Fig.12 A schematic cross-sectional view of the light guide plate along the section line FF; Fig.12 and Fig.13 As shown, the opening H also includes a second hole edge H2 located on the light emitting surface S2, and the light emitting surface S2 includes a plurality of protrusions 130, and the protrusions 130 protrude away from the reflecting surface S3. The plurality of protrusions 130 include a plurality of first protrusions 131, and each first protrusion 131 includes a pair of first sub-protrusions 1311 and a first sub-arc-shaped protrusion 1312. It should be noted that, referring to the embodiment of the present utility model Fig.12 , and the following Figures 14 to 20 In the schematic top view, the protrusion is in a linear shape, for example, when the protrusion extends along the first direction or the second direction, it is in a straight line shape. For example, when the protrusion extends along an arc, it is in an arc shape.

[0144] Along the first direction X, two first sub-protrusions 1311 of a pair of first sub-protrusions 1311 are respectively located on both sides of the second hole edge H2, and the pair of first sub-protrusions 1311 extend along the second direction Y. The first direction X is parallel to the light incident surface S1, and the second direction Y is parallel to the light emitting surface S2 and perpendicular to the first direction X.

[0145] A virtual line 002 passing through the end 13110 of the first sub-protrusion 1311 away from the light incident surface S1 and parallel to the first direction X passes through the second hole edge H2. Both ends of the first sub-arc-shaped protrusion 1312 are respectively connected to the end 13110 of a pair of first sub-protrusions 1311 away from the light incident surface S1, and the first sub-arc-shaped protrusion 1312 is located on the side of the second hole edge H2 away from the light incident surface S1, and the first sub-arc-shaped protrusions 1312 of the plurality of first protrusions 131 are arranged at intervals.

[0146] The protrusion 130 on the light emitting surface S2 of the light guide plate 100 can conduct and gather the light source on the side of the light incident surface S1. By setting a plurality of first protrusions 131, the backlight source on the side of the light incident surface S1 can be introduced to the side of the second hole edge H2 away from the light incident surface S1 through the first sub-protrusion 1311 and the first sub-arc-shaped protrusion 1312, thereby improving the brightness of the area on the side of the second hole edge H2 away from the light incident surface S1, improving the brightness of the display panel in this area, and improving the display effect and display uniformity of the display panel in this area. In addition, the improvement of the brightness of this area by using the first protrusion 131 does not involve an increase in material costs, and has little impact on manufacturing costs, and does not require the module or display panel where the light guide plate is located to increase the avoidance space.

[0147] For example, the virtual line 002 may pass through the center of the second hole edge H2. Of course, the embodiment of the present utility model is not limited to this.

[0148] For example, Fig.12 As shown, the ends 13110 of the plurality of first sub-protrusions 1311 are located on the same virtual line 002. Therefore, it is not only convenient to process and manufacture the first sub-protrusions 1311 and the first sub-arc-shaped protrusions 1312, but also the light effect of the area where the end is located can be made more uniform.

[0149] In some examples, such as Fig.12 As shown, a plurality of first sub-protrusions 1311 located on the same side of the second hole edge H2 are arranged at equal intervals, and the ratio of the distance D6 between two adjacent first sub-arc-shaped protrusions 1312 to the distance D7 between two adjacent first sub-arc-shaped protrusions 1311 is in the range of 0.25-4. For example, the ratio may be 0.3, 0.5, 1, 1.5, 2, 2.5, 3, 3.5, etc., which is not limited in the implementation of the utility model and can be set according to requirements. The figure schematically shows that the ratio is 1. For example, when the distance between the second hole edge H2 and the first light emitting edge S21 of the light emitting surface S2 is small or the diameter of the opening H is large, the distance D6 between the two adjacent first sub-arc-shaped protrusions 1312 can be made as small as possible. At this time, the ratio may be less than 1.

[0150] For example, along the direction in which the second hole edge H2 is away from the light incident surface S1, the spacing between the plurality of first sub-arc-shaped protrusions 1312 may be equal. For example, along the direction in which the second hole edge H2 is away from the light incident surface S1, the spacing between the plurality of first sub-arc-shaped protrusions 1312 may gradually increase. Different spacing arrangements may be selected according to factors such as the shape of the display panel, the shape of the opening, and the distance between the opening and the first light emitting edge, so that the display effect of the area on the side of the second hole edge away from the light incident surface may be more uniform.

[0151] In some examples, such as Fig.12As shown, the arc where the first sub-arc-shaped protrusion 1312 of the first protrusion 131 is located is tangent to the straight line where the pair of first sub-arc-shaped protrusions 1311 are located. Therefore, not only the arc of the first sub-arc-shaped protrusion 1312 is made more rounded. Moreover, at the intersection of the first protrusion 131 and the first sub-arc-shaped protrusion 1312, the transition between the first protrusion 131 and the first sub-arc-shaped protrusion 1312 is more uniform, and the light effect at the intersection is more uniform.

[0152] For example, Fig.12 As shown, the shape of the first sub-arc-shaped protrusion 1312 can be a semicircle.

[0153] In some examples, such as Fig.12 As shown, along the first direction X, the plurality of first sub-protrusions 1311 include the farthest first sub-protrusion 13111 that is farthest from the second hole edge H2. Along the first direction X, the distance D8 between the farthest first sub-protrusion 13111 and the second hole edge H2 ranges from 1 mm to 3 mm. For example, the distance may be 1.5 mm, 2 mm, 2.5 mm, etc., which is not limited in the embodiment of the utility model.

[0154] Fig.14 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate. Fig.14 As shown, the ratio of the distance D6 between two adjacent first sub-arc-shaped protrusions 1312 of the light emitting surface S2 to the distance D7 between two adjacent first sub-arc-shaped protrusions 1311 is 2. For example, the distances between two adjacent first sub-arc-shaped protrusions 1312 are equal. Thus, not only can the display effect of the area on the side of the second hole edge H2 away from the light incident surface S1 be better improved, but also the display effect can be made more uniform.

[0155] Fig.14 Other structures, dimensions, etc. of the embodiments shown may be the same. Fig.12 The embodiments shown will not be described in detail here.

[0156] Fig.15 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate. Fig.15 As shown, the light emitting surface S2 further includes a first light emitting edge S21, which is located on the side of the second hole edge H2 away from the light incident surface S1. The figure schematically shows that the first light emitting edge S21 is a straight line. For example, the first light emitting edge can also be a curve.

[0157] The plurality of protrusions 130 further include a plurality of second protrusions 132. Each second protrusion 132 includes a second sub-protrusion 1321 and a second sub-arc-shaped protrusion 1322. Along the first direction X, the second sub-protrusion 1321 is located on a side of the first sub-protrusion 1311 away from the second hole edge H2. An end 13210 of the second sub-protrusion 1321 close to the first light emitting edge S21 is closer to the first light emitting edge S21 than an end 13110 of the first sub-protrusion 1311 close to the first light emitting edge S21. One end of the second sub-arc-shaped protrusion 1322 is connected to an end 13110 of the second sub-protrusion 1321 close to the first light emitting edge S21, and the other end of the second sub-arc-shaped protrusion 1322 is connected to the first light emitting edge S21. The center of curvature of the second sub-arc-shaped protrusion 1322 is located on the side of the second sub-arc-shaped protrusion 1322 close to the second hole edge H2, and the second sub-arc-shaped protrusions 1322 of the plurality of second protrusions 132 are arranged at intervals. The figure schematically shows that the second protrusion 132 includes a second sub-protrusion 1321 and a second sub-arc-shaped protrusion 1322, however, the embodiment of the utility model does not limit the number of second sub-arc-shaped protrusions 1322 included in a second protrusion 132.

[0158] By setting a plurality of second protrusions 132, the backlight source on one side of the light incident surface S1 can be introduced to the side of the second hole edge H2 away from the light incident surface S1 through the second sub-protrusion 1321 and the second sub-arc-shaped protrusion 1322. Thus, the brightness of the area where the second protrusion 132, especially the second sub-arc-shaped protrusion 1322 is located can be improved, the brightness of the display panel in this area is increased, and the display effect and display uniformity of the display panel in this area are improved. In addition, the improvement of the brightness of the area using the second protrusion 132 does not involve an increase in material costs, and the impact on the manufacturing cost is also minimal, and there is no need to increase the avoidance space of the module where the light guide plate is located or the display panel.

[0159] In some examples, such as Fig.15 As shown, the plurality of second sub-protrusions 1321 located on the same side of the second hole edge H2 are arranged at equal intervals, and the ratio of the interval D9 between two adjacent second sub-arc-shaped protrusions 1322 to the interval D10 between two adjacent second sub-protrusions 1321 is in the range of 0.25-4. The figure schematically shows that the ratio is approximately 2. For example, the ratio can also be 0.3, 0.5, 1.5, 2, 2.5, 3, 3.5, etc., which is not limited in the implementation of the utility model and can be set according to needs.

[0160] For example, Fig.15As shown, the spacing between the plurality of second sub-arc-shaped protrusions 1322 may be equal. For example, along the direction in which the second hole edge H2 is away from the light incident surface S1, the spacing between the plurality of second sub-arc-shaped protrusions 1322 may gradually increase. Different spacing arrangements may be selected according to factors such as the shape of the display panel, the shape of the opening, and the distance between the opening and the second hole edge, so that the display effect of the area on the side of the second hole edge away from the light incident surface may be more uniform.

[0161] In some examples, such as Fig.15 As shown, along the first direction X and in the direction away from the second hole edge H2, the distance between the end portions 13210 of the plurality of second sub-protrusions 1321 located on the same side of the second hole edge H2 and the first light emitting edge S21 becomes smaller and smaller. Thus, the display effect of the area on the side of the second hole edge H2 away from the light incident surface S1 can be made more uniform.

[0162] In some examples, such as Fig.15 As shown, along the first direction X, the plurality of second sub-protrusions 1321 located on the same side of the second hole edge H2 include the farthest second sub-protrusion 13211 farthest from the second hole edge H2 and the closest second sub-protrusion 13212 closest to the second hole edge H2. Along the first direction X, the distance D11 between the farthest second sub-protrusion 13211 and the closest second sub-protrusion 13212 ranges from 0.5 mm to 5 mm. For example, the distance D11 may be 1 mm, 1.5 mm, 2 mm, 2.5 mm, 3 mm, 3.5 mm, 4 mm, 4.5 mm, etc.

[0163] In some examples, such as Fig.15 As shown, the end of the farthest second sub-protrusion 13211 close to the second light emitting edge S22 may extend toward the second light emitting edge S22 to be connected to the second light emitting edge S22.

[0164] In some examples, such as Fig.15 As shown, the plurality of protrusions 130 further include a plurality of third protrusions 133 and a plurality of fourth protrusions 134. The plurality of third protrusions 133 are located on both sides of the second hole edge H2 along the first direction X and on the side of the second sub-protrusion 1321 away from the second hole edge H2, and each third protrusion 133 extends along the second direction Y. The plurality of fourth protrusions 134 are located on the side of the second hole edge H2 close to the light incident surface S1, and each second protrusion 132 extends along the second direction Y and intersects with the second hole edge H2. The third protrusions 133 and the fourth protrusions 134 on the light emitting surface S2 of the light guide plate 100 can conduct and gather the light source on the side of the light incident surface S1, thereby improving the brightness and uniformity of the light emitted by the light guide plate 100.

[0165] For example, two ends of the third protrusion are respectively connected to the light emitting edge of the light emitting surface. For example, an end of the fourth protrusion away from the edge of the second hole is connected to the light emitting edge of the light emitting surface.

[0166] In some examples, such as Fig.15 As shown, the first sub-protrusions 1311 of the first protrusions 131, the second sub-protrusions 1321 of the second protrusions 132, the third protrusions 133 and the fourth protrusions 134 are arranged at equal intervals. Thus, the brightness and uniformity of the light emitted by the light guide plate 100 can be better improved.

[0167] Fig.16 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate. Fig.16 As shown, the second protrusion 132 includes a second sub-protrusion 1321 and two second sub-arc-shaped protrusions 1322. The increase in the number of the second sub-arc-shaped protrusions 1322 can better improve the brightness of the area where the second protrusion 132 is located.

[0168] For example, Fig.16 As shown, the ratio of the distance D9 between two adjacent second sub-arc protrusions 1322 to the distance D10 between two adjacent second sub-arc protrusions 1321 is approximately 1. For example, the ratio of the distance D9 between two adjacent second sub-arc protrusions 1322 to the distance D6 between two adjacent first sub-arc protrusions 1312 is approximately 1.

[0169] In some examples, such as Fig.16 As shown, the plurality of second sub-arc-shaped protrusions 1322 on the same side of the second hole edge H2 are arranged at equal intervals. Thus, not only can the brightness of the area on the side of the second hole edge H2 away from the light incident surface S1 be better improved, but also the brightness of the area where the second sub-arc-shaped protrusions 1322 are located can be made more uniform.

[0170] In some examples, such as Fig.16 As shown, the ends of the two second sub-arc-shaped protrusions 1322 of the same second protrusion 132 close to the light incident surface S1 can be connected to the same position of the same second sub-protrusion 1321. For example, the ends of the two second sub-arc-shaped protrusions 1322 of the same second protrusion 132 close to the light incident surface S1 can be connected to different positions of the same second sub-protrusion 1321.

[0171] Fig.17 for Figure 3 Another schematic top view of the light emitting surface S2 of the light guide plate. Fig.17As shown, the second protrusion 132 includes a second sub-protrusion 1321 and three second sub-arc-shaped protrusions 1322. The increase in the number of second sub-arc-shaped protrusions 1322 can better improve the brightness of the area where the second protrusions 132 are located. It should be noted that in order to more clearly show the structural features of the second protrusions 132, only part of the second protrusions 132 are shown in the figure, and other structural features such as the first protrusions 131 are omitted.

[0172] In some examples, such as Fig.17 As shown, the plurality of second sub-arc-shaped protrusions 1322 on the same side of the second hole edge H2 are arranged at equal intervals. Thus, not only can the brightness of the area on the side of the second hole edge H2 away from the light incident surface S1 be better improved, but also the brightness of the area where the second sub-arc-shaped protrusions 1322 are located can be made more uniform.

[0173] In some examples, such as Fig.17 As shown, the ends of the three second sub-arc-shaped protrusions 1322 of the same second protrusion 132 close to the light incident surface S1 can be connected to the same position of the same second sub-protrusion 1321. For example, the ends of the three second sub-arc-shaped protrusions 1322 of the same second protrusion 132 close to the light incident surface S1 can be connected to different positions of the same second sub-protrusion 1321.

[0174] Fig.18 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate; Fig.19 for Fig.18 A partial enlarged schematic diagram of the light emitting surface of the light guide plate. Fig.18 and Fig.19 As shown, the opening H includes a second hole edge H2 located on the light emitting surface S2, the light emitting surface S2 includes a first light emitting edge S21, the first light emitting edge S21 is located on a side of the second hole edge H2 away from the light incident surface S1, and the light emitting surface S2 includes a plurality of protrusions 130. The plurality of protrusions 130 include a plurality of fifth protrusions 135, a plurality of sixth protrusions 136, a plurality of seventh protrusions 137, and a plurality of eighth protrusions 138.

[0175] A plurality of fifth protrusions 135 extend along the first direction X, and are located on both sides of the second hole edge H2 along the first direction X, and one end of the fifth protrusion 135 intersects with the second hole edge H2. A plurality of sixth protrusions 136 extend along the first direction X, and are located on a side of the second hole edge H2 close to the first light emitting edge S21, and do not intersect with the second hole edge H2. A plurality of seventh protrusions 137 extend along the second direction Y, and are located on both sides of the second hole edge H2 along the first direction X. A plurality of eighth protrusions 138 extend along the second direction Y, and are located on a side of the second hole edge H2 close to the first light emitting edge S21, and one end of the eighth protrusion 138 intersects with the second hole edge H2. The seventh protrusion 137 intersects with the fifth protrusion 135 and the sixth protrusion 136, and the eighth protrusion 138 intersects with the sixth protrusion 136.

[0176] By making the seventh protrusion 137 intersect with the fifth protrusion 135 and the sixth protrusion 136, and the eighth protrusion 138 intersect with the sixth protrusion 136, the backlight source on the side of the light incident surface S1 can be introduced to the side of the second hole edge H2 away from the light incident surface S1 through the fifth protrusion 135, the sixth protrusion 136, the seventh protrusion 137 and the eighth protrusion 138, thereby improving the brightness of the area on the side of the second hole edge H2 away from the light incident surface S1, improving the brightness of the display panel in this area, and improving the display effect and display uniformity of the display panel in this area. In addition, the improvement of the brightness of this area using the above solution does not involve an increase in material costs, and has little impact on manufacturing costs, and does not require the module where the light guide plate is located or the display panel to increase the avoidance space.

[0177] For example, Fig.19 As shown, part of the eighth protrusion 138 may also intersect with the fifth protrusion 135 .

[0178] In some examples, such as Fig.18 and Fig.19 As shown, the light emitting surface S2 further includes a second light emitting edge S22 and a third light emitting edge S23, and the second light emitting edge S22 and the third light emitting edge S23 are respectively located on both sides of the second hole edge H2 along the first direction X. One end of the fifth protrusion 135 located between the second hole edge H2 and the second light emitting edge S22 is connected to the second light emitting edge S22. One end of the fifth protrusion 135 located between the second hole edge H2 and the third light emitting edge S23 is connected to the third light emitting edge S23. Both ends of the sixth protrusion 136 are respectively connected to the second light emitting edge S22 and the third light emitting edge S23. Thus, the brightness of the area where the fifth protrusion 135 and the sixth protrusion 136 are located can be improved.

[0179] In some examples, such as Fig.19As shown, a plurality of fifth protrusions 135 are arranged at equal intervals. For example, a plurality of sixth protrusions 136 are arranged at equal intervals. For example, a plurality of seventh protrusions 137 are arranged at equal intervals. For example, a plurality of eighth protrusions 138 are arranged at equal intervals. For example, a plurality of protrusions 130 are arranged at equal intervals.

[0180] For example, Fig.19 As shown, a virtual extension line 003 of the fifth protrusion 135 farthest from the first light emitting edge S21 along the second direction passes through the center of the second hole edge H2.

[0181] Fig. 20 for Figure 3 Another schematic top view of the light emitting surface of the light guide plate. Fig. 20 (b) is Fig. 20 (a) is a partial enlarged schematic diagram, and in order to clearly illustrate the fifth protrusion 135 and the sixth protrusion 136, Fig. 20 (b) shows only the fifth protrusion 135 and the sixth protrusion 136, and omits the seventh protrusion 137 and the eighth protrusion 138 and other structures.

[0182] like Fig.18 and Fig. 20 As shown, along the second direction Y, the fifth protrusion 135 and the sixth protrusion 136 do not need to extend to the second light emitting edge S22 and the third light emitting edge S23 , but only need to extend to the peripheral area of ​​the second hole edge H2 .

[0183] like Fig. 20As shown, the plurality of fifth protrusions 135 include a farthest fifth protrusion 1351 farthest from the first light emitting edge S21, and the plurality of sixth protrusions 136 include a nearest sixth protrusion 1361 closest to the first light emitting edge S21. The end of the farthest fifth protrusion 1351 located between the second hole edge H2 and the second light emitting edge S22 and away from the second hole edge H2 is the first end 135a. The end of the farthest fifth protrusion 1351 located between the second hole edge H2 and the third light emitting edge S23 and away from the second hole edge H2 is the second end 135b. The end of the nearest sixth protrusion 1361 close to the second light emitting edge S22 is the third end 136a, and the end of the nearest sixth protrusion 1361 close to the third light emitting edge S23 is the fourth end 136b. The angle W between the first virtual line 004 connecting the first end 135a and the third end 136a and the first direction X is in the range of 45 degrees to 90 degrees, and the angle W between the second virtual line 005 connecting the second end 135b and the fourth end 136b and the first direction X is in the range of 45 degrees to 90 degrees. The fifth protrusion 135 and the sixth protrusion 136 located between the farthest fifth protrusion 1351 and the nearest sixth protrusion 1361 are also located in the area defined by the first virtual line 004 and the second virtual line 005. Thus, not only can the brightness in the area defined by the first virtual line 004 and the second virtual line 005 be improved, but also the size of the sixth protrusion 136 and the seventh protrusion 137 is simplified, and the processing technology is simplified.

[0184] For example, Fig. 20 As shown, along the first direction X, the minimum distance between the first end 135a and the second hole edge H2 has a value range of 1mm-6mm. For example, the distance can be 2mm, 3mm, 4mm, 5mm, etc., which is not limited in the embodiment of the present invention. For example, along the first direction X, the minimum distance between the second end 135b and the second hole edge H2 has a value range of 1mm-6mm. For example, the distance can be 2mm, 3mm, 4mm, 5mm, etc., which is not limited in the embodiment of the present invention.

[0185] In some examples, such as Fig.12 As shown, the interval D12 between two adjacent protrusions 130 in the plurality of protrusions 130 ranges from 25 μm to 100 μm. For example, the interval D12 may be 30 μm, 40 μm, 50 μm, 60 μm, 70 μm, 80 μm, or 90 μm. For example, the plurality of protrusions 130 on the light exit surface S2 are arranged at equal intervals.

[0186] In some examples, such as Fig.13As shown, the height H of the plurality of protrusions 130 ranges from 0.3 μm to 2 μm. For example, the height H may be 0.5 μm, 1 μm, 1.5 μm, 1.8 μm, etc. For example, the heights of the plurality of protrusions 130 on the light exit surface S2 are all equal.

[0187] Fig.21 The figure is a schematic diagram of the improved effect of the display panel using the light guide plate provided by one embodiment of the utility model. The confirmation of the light effect of the opening area of ​​the display panel includes a comprehensive evaluation of subjective effect and objective data. Fig.21 As shown in (a), the objective evaluation standard uses the brightness uniformity of one point around the hole, and the brightness uniformity of one point is the ratio of the lowest brightness of one point to the highest brightness of one point.

[0188] like Fig.21 As shown in (b), the first option is to adopt Figure 4 Solution 2 is to use Fig.18 Therefore, the brightness uniformity of one point of the display panel using the light guide plate of the utility model is improved to more than 80%.

[0189] like Fig.21 (c) is the software simulation diagram of Scheme 2, which shows that the brightness uniformity around the hole has been improved.

[0190] The embodiment of the utility model also provides a backlight module. Fig. 22 A schematic diagram of a backlight module provided by an embodiment of the utility model. Fig. 22 As shown, the backlight module 200 includes any of the above light guide plates 100 and a light source, and the light source is located on one side of the light incident surface of the light guide plate. Therefore, the backlight module 200 has the corresponding beneficial effects of the light guide plate 100, which will not be repeated here.

[0191] The embodiment of the present invention further provides a liquid crystal display panel 300 . Fig.23 A schematic diagram of a liquid crystal display panel provided by an embodiment of the utility model. Fig.23 As shown, the liquid crystal display panel 300 includes any of the backlight modules 200 and a liquid crystal display module 301 mentioned above, and the liquid crystal display module 301 is located on one side of the light emitting surface of the light guide plate 100. Thus, the liquid crystal display panel 300 has beneficial effects corresponding to the beneficial effects of the backlight module 200, which will not be repeated here.

[0192] For example, the liquid crystal display panel 300 can be used in any product or component with a display function, such as a television, a laptop computer, a tablet computer, a mobile phone, a navigator, a wearable device, a virtual reality device, etc.

[0193] The embodiment of the utility model also provides a light guide plate mold for making a light guide plate. Fig.24 A projection schematic diagram of a light guide plate mold provided by an embodiment of the utility model; Fig.25 for Fig.24 A schematic cross-sectional view of the light guide plate mold along the section line GG. Fig.24 and Fig.25 As shown, the light guide plate mold 400 includes a first surface 410 and a second surface 420 opposite to each other, the first surface 410 includes a plurality of molding grooves 4100 recessed toward the second surface 420 to form a plurality of reflective elements of the light guide plate mentioned above at the plurality of molding grooves 4100, and each molding groove 4100 includes a first concave surface 4101 and a second concave surface 4102 to form a first convex surface and a second convex surface of the reflective element mentioned above at the first concave surface 4101 and the second concave surface 4102. The first concave surface 4101 and the second concave surface 4102 intersect, and the maximum distance between the edge line where the first concave surface 4101 and the second concave surface 4102 intersect and the second surface 420 is a third distance D03, and the maximum distance between the edge of the first concave surface 4101 away from the second concave surface 4102 and the second surface is a fourth distance D04, and the third distance D03 is less than the fourth distance D04.

[0194] The light guide plate mold provided by the embodiment of the utility model can form the light guide plate mentioned above, so that the light guide plate mold has the beneficial technical effects corresponding to the beneficial technical effects of the light guide plate mentioned above, which will not be repeated here.

[0195] In some examples, such as Fig.24 and Fig.25 As shown, the plurality of molding grooves 4100 include a first molding groove 4100a, the first molding groove 4100a includes three first concave surfaces 4101 and one second concave surface 4102, and the second concave surface 4102 intersects with the three first concave surfaces 4101. Thus, the first reflective element mentioned above can be formed at the first molding groove 4100a.

[0196] In some examples, such as Fig.24 and Fig.25 As shown, the shapes of the three first concave surfaces 4101 are substantially the same. For example, the shapes of the orthographic projections of the three first concave surfaces 4101 on the second surface 420 are substantially the same. For example, the three first concave surfaces 4101 are centrally symmetrical. For example, the second concave surface 4102 is centrally symmetrical. For example, the molding groove 4100 or the first molding groove 4100a is centrally symmetrical. Thus, the emitted light of the reflective element formed by the molding groove can be made more symmetrical and uniform, so that the light output of the light guide plate is more uniform.

[0197] In some examples, such as Fig.24 and Fig.25As shown, the gaps between the orthographic projections of the three first concave surfaces 4101 on the second surface 420 overlap with the orthographic projections of the second concave surfaces 4102 on the second surface 420 .

[0198] In some examples, such as Fig.24 and Fig.25 As shown, the first surface 410 also includes a molding plane 4103, the first concave surface 4101 and the second concave surface 4102 are located on the side of the molding plane 4103 close to the second surface 420, the first concave surface 4101 includes a first molding edge 4101a located on the molding plane 4103, the first molding edge 4101a includes an arc, and the second concave surface 4102 includes a plurality of second molding edges 4102a located on the molding plane 4103, and the plurality of second molding edges 4102a are approximately located on the same molding virtual circle 006. In this way, the light guide plate mentioned above can be obtained, and its beneficial technical effects are referred to above and will not be repeated again.

[0199] In some examples, such as Fig.24 As shown, the diameter of the molding virtual circle 006 is less than or equal to the diameter of the first molding edge 4101a.

[0200] In some examples, such as Fig.24 As shown, the second molding edge 4102a is located between two adjacent first concave surfaces 4101 in the same first molding groove 4100a.

[0201] For example, Fig.24 As shown, the diameter of the molding virtual circle 006 can be equal to or smaller than the diameter of the first molding edge 4101a.

[0202] For example, Fig.24 As shown, the diameter of the first molding edge 4101a ranges from 40 μm to 50 μm. For example, the diameter of the molding virtual circle 006 ranges from 40 μm to 50 μm.

[0203] In some examples, the surface roughness of the first concave surface is less than the surface roughness of the second concave surface. For example, the first concave surface and the second concave surface are formed using different molding processes. For example, the first concave surface can be formed first, and then the second concave surface can be formed. For example, the first concave surface can be formed using a collision point process. For example, the second concave surface can be formed using a laser process.

[0204] In some examples, the surface roughness of the first concave surface ranges from 0 to 1 μm, and the surface roughness of the second concave surface ranges from 1 μm to 2 μm. For example, the surface roughness may be the arithmetic mean deviation Ra of the profile.

[0205] In some examples, the first molded edge of the first concave surface on the second surface can be continuous. For example, the second molded edge of the second concave surface can be discontinuous. For example, the second molded edge of the second concave surface can be serrated.

[0206] In some examples, such as Fig.24 and Fig.25 As shown, the orthographic projection of the first molded edge 4101a of the first concave surface 4101 on the second surface 420 includes an arc, and the length L2 of the orthographic projection of the edge line 4103 where the first concave surface 4101 intersects the second concave surface 4102 on the second surface 420 is not greater than 0.9 times the diameter d2 of the arc.

[0207] In some examples, such as Fig.24 As shown, the distance D13 between the orthographic projection of the edge line 4103 where the first concave surface 4101 and the second concave surface 4102 intersect on the second surface 420 and the center of the first molding edge 4101a is not less than 0.6 times the diameter d2 of the arc.

[0208] In some examples, such as Fig.24 As shown, the center distance between two adjacent first molding grooves 4100a is not less than twice the diameter d2 of the arc.

[0209] In the utility model, parameters such as the size of the molding groove can be set with reference to the size of the reflective element mentioned above. The molding groove of the light guide plate mold forms the reflective element of the light guide plate. Therefore, the size of the reflective element corresponds to the size of the molding groove, which will not be repeated here.

[0210] Fig.26 Another structural schematic diagram of the molding groove of the light guide plate mold provided in an embodiment of the utility model. Fig.26 (a) and (b) show two different arrangements of the second molding grooves. Fig.26 (a) The cross section along the section line HH and (b) the cross section along the section line II are referenced Fig.25 , I will not go into details here.

[0211] like Fig.26 As shown, the plurality of molding grooves 4100 further include a second molding groove 4100b, and the second molding groove 4100b includes two second concave surfaces 4102 and one first concave surface 4101. Thus, a second reflective element may be formed at the second molding groove 4100b.

[0212] Fig. 27 Another structural schematic diagram of the molding groove of the light guide plate mold provided in an embodiment of the utility model. Fig. 27(a) is a schematic top view of the third molding groove 4100c; (b) is a schematic cross-sectional view of the third molding groove 4100c along the section line JJ.

[0213] like Fig. 27 As shown, the plurality of molding grooves 4100 further include a third molding groove 4100c, and the third molding groove 4100c includes a second concave surface 4102 and a first concave surface 4101. Thus, a third reflective element can be formed at the third molding groove 4100c.

[0214] For example, the same light guide plate mold may include at least one of the first molding groove, the second molding groove and the second molding groove, which is not limited in the embodiment of the utility model. The structure of the light guide plate mold can be designed according to the specific structure of the reflective element of the light guide plate mentioned above.

[0215] The embodiment of the utility model also provides a method for manufacturing a light guide plate mold. Fig.28 The following is a flow chart of a method for manufacturing a light guide plate mold provided by an embodiment of the utility model. Fig.28 As shown, the production method includes:

[0216] S01: providing a light guide plate mold substrate, the light guide plate mold substrate comprising a first initial surface and a second surface opposite to each other, the first initial surface comprising a first preset area;

[0217] S02: forming a plurality of first initial concave surfaces in a first preset area of ​​the first initial surface; and

[0218] S03: A plurality of second concave surfaces are formed in the first preset area, and the orthographic projection of the second concave surfaces on the second surface overlaps with the orthographic projection of the first initial concave surface on the second surface. After the second concave surfaces are formed, the first initial concave surface becomes the first concave surface and intersects with the second concave surface, the first initial surface becomes the first surface, and the light guide plate mold substrate becomes the light guide plate mold.

[0219] The maximum distance between the edge line where the first concave surface and the second concave surface intersect and the second surface is the third distance, the maximum distance between the edge of the first concave surface away from the second concave surface and the second surface is the fourth distance, and the third distance is less than the fourth distance. For example, the first preset area corresponds to the first reflection area of ​​the light guide plate mentioned above. The light guide plate mold mentioned above can be formed by adopting the manufacturing method, so the manufacturing method has the beneficial technical effects corresponding to the beneficial technical effects of the light guide plate mold, which will not be repeated here.

[0220] Fig.29 It is a partial structural schematic diagram of a light guide plate mold formed according to the manufacturing method of the utility model. Fig.29 (a) shows a schematic top view of the first initial concave surface 41010, Fig.29(b) in FIG. 4 shows a cross-sectional schematic diagram of the first initial concave surface 41010. Fig.29 As shown, a plurality of first initial concave surfaces 41010 are formed in a first preset area of ​​the first initial surface 4100. For example, Fig.29 As shown, at least some of the first initial concave surfaces of the plurality of first initial concave surfaces 4102 are tangent to each other.

[0221] For example, the first initial concave surface may be formed by a collision process. For example, the second concave surface may be formed by a laser process.

[0222] In some examples, the first initial surface further includes a second preset area that at least partially surrounds the first preset area, and the manufacturing method further includes: forming a plurality of third concave surfaces in the second preset area of ​​the first initial surface. For example, the third concave surfaces and the first initial concave surfaces are formed using the same molding process.

[0223] For example, the second preset area corresponds to the second reflective area of ​​the light guide plate, and a plurality of third concave surfaces are formed in the second preset area of ​​the first initial surface to form reflective dots of the light guide plate at the third concave surfaces. For example, the size and shape of the third concave surfaces are the same as those of the first initial concave surfaces, and are not described in detail here.

[0224] There are a few points to note:

[0225] (1) In the drawings of the embodiments of the present invention, only the structures related to the embodiments of the present invention are involved, and other structures can refer to the general design.

[0226] (2) In the absence of conflict, the features of the same embodiment and different embodiments of the present invention may be combined with each other.

[0227] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A light guide plate, comprising a light incident surface, a light emitting surface intersecting the light incident surface, and a reflective surface arranged opposite to the light emitting surface, and further comprising an opening, It is characterized in that The opening includes a first hole edge located on the reflecting surface, the reflecting surface includes a first reflecting area, the first reflecting area is located on a side of the first hole edge away from the light incident surface, the orthographic projection of the first reflecting area on the light incident surface overlaps with the orthographic projection of the first hole edge on the light incident surface, within the first reflecting area, the reflecting surface includes a plurality of reflecting elements, the reflecting elements include a first convex surface and a second convex surface protruding away from the light emitting surface, the first convex surface and the second convex surface intersect, the maximum distance between the edge line where the first convex surface and the second convex surface intersect and the light emitting surface is a first distance, the maximum distance between the edge of the first convex surface away from the second convex surface and the light emitting surface is a second distance, the first distance is greater than the second distance, and / or The opening also includes a second hole edge located on the light emitting surface, the light emitting surface includes a plurality of protrusions, the plurality of protrusions include a plurality of first protrusions, each of the first protrusions includes a pair of first sub-protrusions and a first sub-arc protrusion, along the first direction, the two first sub-protrusions of the pair of first sub-protrusions are respectively located on both sides of the second hole edge, the pair of first sub-protrusions extend along the second direction, the first direction is parallel to the light incident surface, the second direction is parallel to the light emitting surface and perpendicular to the first direction, a virtual line passing through the end of the first sub-protrusion away from the light incident surface and parallel to the first direction passes through the second hole edge, the two ends of the first sub-arc protrusion are respectively connected to the ends of the pair of first sub-protrusions away from the light incident surface, the first sub-arc protrusion is located on the side of the second hole edge away from the light incident surface, and the first sub-arc protrusions of the plurality of first protrusions are arranged at intervals.

2. The light guide plate according to claim 1, characterized in that: The opening includes a first hole edge located on the reflecting surface, the reflecting surface includes a first reflecting area, the first reflecting area is located on a side of the first hole edge away from the light incident surface, the orthographic projection of the first hole edge on the light incident surface falls within the orthographic projection of the first reflecting area on the light incident surface, within the first reflecting area, the reflecting surface includes a plurality of reflecting elements, the reflecting elements include a first convex surface and a second convex surface protruding away from the light emitting surface, the first convex surface and the second convex surface intersect, the maximum distance between the edge line where the first convex surface and the second convex surface intersect and the light emitting surface is a first distance, the maximum distance between the edge of the first convex surface away from the second convex surface and the light emitting surface is a second distance, and the first distance is greater than the second distance.

3. The light guide plate according to claim 2, characterized in that: The plurality of reflective elements include a first reflective element, wherein the first reflective element includes three first convex surfaces and one second convex surface, wherein the second convex surface intersects with the three first convex surfaces.

4. The light guide plate according to claim 3, characterized in that: Gaps between the orthographic projections of the three first convex surfaces on the light-emitting surface overlap with the orthographic projection of the second convex surface on the light-emitting surface.

5. The light guide plate according to claim 3, characterized in that: The reflective surface also includes a reflective plane, the first convex surface and the second convex surface are located on a side of the reflective plane away from the light emitting surface, the first convex surface includes a first edge located on the reflective plane, the first edge includes a first arc, and the second convex surface includes a plurality of second edges located on the reflective plane, and the plurality of second edges are approximately located on the same virtual circle.

6. The light guide plate according to claim 5, characterized in that: The center of the orthographic projection of the virtual circle on the light exit surface is equidistant from the center of the orthographic projection of the first edges of the three first convex surfaces on the light exit surface.

7. The light guide plate according to claim 5, characterized in that: The diameter of the virtual circle is smaller than or equal to the diameter of the first edge.

8. The light guide plate according to claim 2, characterized in that: The plurality of reflective elements include a second reflective element, the second reflective element includes two first convex surfaces and one second convex surface, and the second convex surface intersects with both of the two first convex surfaces.

9. The light guide plate according to claim 8, characterized in that: A gap between the orthographic projections of the two first convex surfaces on the light emitting surface overlaps with the orthographic projection of the second convex surface on the light emitting surface.

10. The light guide plate according to claim 2, characterized in that: The plurality of reflective elements include a third reflective element including one first convex surface and one second convex surface.

11. The light guide plate according to any one of claims 2 to 10, characterized in that: The surface roughness of the first convex surface is smaller than the surface roughness of the second convex surface.

12. The light guide plate according to any one of claims 2 to 7, characterized in that: The orthographic projection of the edge of the first convex surface on the light-emitting surface includes a second arc, and the length of the orthographic projection of the edge line where the first convex surface intersects the second convex surface on the light-emitting surface is not greater than 0.9 times the diameter of the second arc.

13. The light guide plate according to claim 12, characterized in that: The distance between the orthographic projection of the edge line where the first convex surface intersects the second convex surface on the light-emitting surface and the center of the second arc is not less than 0.6 times the diameter of the second arc.

14. The light guide plate according to claim 12, characterized in that: The center distance between the orthographic projections of the second convex surfaces of two adjacent reflective elements on the light-emitting surface is not less than twice the diameter of the second arc.

15. The light guide plate according to claim 14, characterized in that: The minimum distance between two adjacent reflective elements is greater than or equal to zero.

16. The light guide plate according to any one of claims 2 to 10, characterized in that: In the first reflection area, the reflection surface further includes reflection dots, and the reflection dots include a third convex surface protruding in a direction away from the light emitting surface. The minimum spacing between adjacent reflection dots and reflection elements is greater than or equal to zero, and / or The minimum distance between two adjacent reflection dots is greater than or equal to zero.

17. The light guide plate according to claim 16, characterized in that: The roughness of the first convex surface of the reflective element is substantially equal to the roughness of the third convex surface of the reflective dots.

18. The light guide plate according to claim 16, characterized in that: In the first reflection area, the ratio of the number of the second convex surfaces to the sum of the number of the first convex surfaces and the third convex surfaces ranges from 1 / 9 to 1 / 3.

19. The light guide plate according to claim 16, characterized in that: The orthographic projection of the edge of the reflective dot on the light-emitting surface includes a circle, the orthographic projection of the edge of the first convex surface on the light-emitting surface includes a second arc, and the orthographic projection of the edge of the third convex surface on the light-emitting surface is equal to the diameter of the orthographic projection of the edge of the first convex surface on the light-emitting surface.

20. The light guide plate according to any one of claims 2 to 10, characterized in that: The reflective surface also includes a second reflective area that at least partially surrounds the first reflective area. In the second reflective area, the reflective surface includes a plurality of reflective dots, and the reflective dots include a third convex surface that protrudes away from the light-emitting surface, and the minimum spacing between two adjacent third convex surfaces is greater than or equal to zero.

21. The light guide plate according to any one of claims 2 to 10, characterized in that: The orthographic projection of the edge of the first convex surface on the light-emitting surface includes a second arc, and the diameter of the second arc ranges from 40 μm to 50 μm. The center distance of the orthographic projections of the second convex surfaces of two adjacent reflective elements on the light emitting surface ranges from 80 μm to 100 μm.

22. The light guide plate according to any one of claims 1 to 10, characterized in that: The opening includes a second hole edge located on the light emitting surface, the light emitting surface includes a plurality of protrusions, the protrusions protrude away from the reflecting surface, and the plurality of protrusions include a plurality of first protrusions, Each of the first protrusions includes a pair of first sub-protrusions and a first sub-arc-shaped protrusion. Along the first direction, the two first sub-protrusions of the pair of first sub-protrusions are respectively located on both sides of the edge of the second hole. The pair of first sub-protrusions extend along the second direction. A virtual line passing through the end of the first sub-protrusion away from the light incident surface and parallel to the first direction passes through the edge of the second hole, and the two ends of the first sub-arc protrusion are respectively connected to the ends of the pair of first sub-protrusions away from the light incident surface, and the first sub-arc protrusion is located on the side of the second hole edge away from the light incident surface, and the first sub-arc protrusions of the multiple first protrusions are arranged at intervals.

23. The light guide plate according to claim 22, characterized in that: The plurality of first sub-protrusions on the same side of the second hole edge are arranged at equal intervals, and the ratio of the interval between two adjacent first sub-arc-shaped protrusions to the interval between two adjacent first sub-protrusions is in the range of 0.25-4.

24. The light guide plate according to claim 23, characterized in that: The first sub-arc-shaped protrusion of the first protrusion is tangent to the pair of first sub-protrusions.

25. The light guide plate according to claim 22, characterized in that: Along the first direction, the plurality of first sub-protrusions include a farthest first sub-protrusion that is farthest from an edge of the second hole. Along the first direction, a distance between the farthest first sub-protrusion and the edge of the second hole ranges from 1 mm to 3 mm.

26. The light guide plate according to claim 22, characterized in that: The light emitting surface further includes a first light emitting edge, the first light emitting edge is located on a side of the second hole edge away from the light incident surface, the plurality of protrusions further include a plurality of second protrusions, Each second protrusion includes a second sub-protrusion and a second sub-arc protrusion. Along the first direction, the second sub-protrusion is located on the side of the first sub-protrusion away from the edge of the second hole, the end of the second sub-protrusion close to the first light emitting edge is closer to the first light emitting edge than the end of the first sub-protrusion close to the first light emitting edge, one end of the second sub-arc protrusion is connected to the end of the second sub-protrusion close to the first light emitting edge, and the other end of the second sub-arc protrusion is connected to the first light emitting edge, the center of curvature of the second sub-arc protrusion is located on the side of the second sub-arc protrusion close to the second hole edge, and the second sub-arc protrusions of the multiple second protrusions are arranged at intervals.

27. The light guide plate according to claim 26, characterized in that: The plurality of second sub-protrusions on the same side of the second hole edge are arranged at equal intervals, and the ratio of the interval between two adjacent second sub-arc protrusions to the interval between two adjacent second sub-protrusions is in the range of 0.25-4.

28. The light guide plate according to claim 26, characterized in that: Along the first direction and in a direction away from the second hole edge, a distance between ends of a plurality of second sub-protrusions located on the same side of the second hole edge and the first light emitting edge becomes smaller and smaller.

29. The light guide plate according to claim 26, characterized in that: The second protrusion includes a second sub-protrusion and a plurality of second sub-arc-shaped protrusions, and the plurality of second sub-arc-shaped protrusions located on the same side of the edge of the second hole are arranged at equal intervals.

30. The light guide plate according to claim 26, characterized in that: Along the first direction, the multiple second sub-protrusions located on the same side of the edge of the second hole include a farthest second sub-protrusion farthest from the edge of the second hole and a nearest second sub-protrusion closest to the edge of the second hole. Along the first direction, the distance between the farthest second sub-protrusion and the nearest second sub-protrusion ranges from 0.5mm to 5mm.

31. The light guide plate according to claim 26, characterized in that: The plurality of protrusions further include a plurality of third protrusions and a plurality of fourth protrusions, The plurality of third protrusions are located on both sides of the edge of the second hole along the first direction and on a side of the second sub-protrusion away from the edge of the second hole, and each of the third protrusions extends along the second direction. The plurality of fourth protrusions are located on a side of the edge of the second hole close to the light incident surface, and each of the second protrusions extends along the second direction and intersects with the edge of the second hole. The first sub-protrusions of the plurality of first protrusions, the second sub-protrusions of the plurality of second protrusions, the plurality of third protrusions, and the plurality of fourth protrusions are arranged at equal intervals.

32. The light guide plate according to any one of claims 1 to 10, characterized in that: The opening includes a second hole edge located on the light emitting surface, the light emitting surface includes a first light emitting edge, the first light emitting edge is located on a side of the second hole edge away from the light incident surface, the light emitting surface includes a plurality of protrusions, and the plurality of protrusions include: A plurality of fifth protrusions extending along the first direction and located on both sides of the edge of the second hole along the first direction, one end of the fifth protrusion intersecting with the edge of the second hole; a plurality of sixth protrusions extending along the first direction, located on a side of the second hole edge close to the first light emitting edge, and not intersecting the second hole edge; a plurality of seventh protrusions extending along the second direction and located on both sides of the edge of the second hole along the first direction; and A plurality of eighth protrusions extend along the second direction and are located on a side of the second hole edge close to the first light emitting edge, wherein one end of the eighth protrusion intersects with the second hole edge. The seventh protrusion intersects with the fifth protrusion and the sixth protrusion, and the eighth protrusion intersects with the sixth protrusion.

33. The light guide plate according to claim 32, characterized in that: The light emitting surface further includes a second light emitting edge and a third light emitting edge, wherein the second light emitting edge and the third light emitting edge are respectively located on both sides of the second hole edge along the first direction. One end of the fifth protrusion located between the second hole edge and the second light emitting edge is connected to the second light emitting edge, and one end of the fifth protrusion located between the second hole edge and the third light emitting edge is connected to the third light emitting edge. Two ends of the sixth protrusion are respectively connected to the second light emitting edge and the third light emitting edge.

34. The light guide plate according to claim 33, characterized in that: Along the second direction, the plurality of fifth protrusions include a farthest fifth protrusion farthest from the first light emitting edge, and the plurality of sixth protrusions include a closest sixth protrusion closest to the first light emitting edge. The end of the farthest fifth protrusion located between the second hole edge and the second light emitting edge and away from the second hole edge is the first end, and the end of the farthest fifth protrusion located between the second hole edge and the third light emitting edge and away from the second hole edge is the second end. The end of the closest sixth protrusion close to the second light emitting edge is the third end, and the end of the closest sixth protrusion close to the third light emitting edge is the fourth end. The angle between the first direction and a first virtual line connecting the first end and the third end is in the range of 45 degrees to 90 degrees, and the angle between the first direction and a second virtual line connecting the second end and the fourth end is in the range of 45 degrees to 90 degrees. The fifth protrusion and the sixth protrusion located between the farthest fifth protrusion and the nearest sixth protrusion are also located within the area defined by the first virtual line and the second virtual line.

35. The light guide plate according to claim 22, characterized in that: The interval between two adjacent protrusions in the plurality of protrusions ranges from 25 μm to 100 μm, and the height of the plurality of protrusions ranges from 0.3 μm to 2 μm.

36. A backlight module, characterized in that: It comprises a light guide plate and a light source according to any one of claims 1 to 35, wherein the light source is located on one side of the light incident surface of the light guide plate.

37. A liquid crystal display panel, characterized in that: It comprises a backlight module and a liquid crystal display module according to claim 36, wherein the liquid crystal display module is located on one side of the light emitting surface of the light guide plate.

38. A light guide plate mold for manufacturing the light guide plate according to claim 2, comprising a first surface and a second surface opposite to each other, characterized in that: The first surface includes a plurality of molding grooves that are recessed toward the second surface to form the plurality of reflective elements of the light guide plate at the plurality of molding grooves, each of the molding grooves includes a first concave surface and a second concave surface to form the first convex surface and the second convex surface of the reflective element at the first concave surface and the second concave surface, The first concave surface and the second concave surface intersect, the maximum distance between the edge line where the first concave surface and the second concave surface intersect and the second surface is a third distance, the maximum distance between the edge of the first concave surface away from the second concave surface and the second surface is a fourth distance, and the third distance is smaller than the fourth distance.

39. The light guide plate mold according to claim 38, characterized in that: The plurality of molding grooves include a first molding groove, wherein the first molding groove includes three first concave surfaces and one second concave surface, and the second concave surface intersects with the three first concave surfaces.

40. The light guide plate mold according to claim 39, characterized in that: The first surface also includes a molding plane, the first concave surface and the second concave surface are located on a side of the molding plane close to the second surface, the first concave surface includes a first molding edge located on the molding plane, the first molding edge includes an arc, and the second concave surface includes a plurality of second molding edges located on the molding plane, and the plurality of second molding edges are approximately located on the same molding virtual circle.

41. The light guide plate mold according to claim 40, characterized in that: The diameter of the molding virtual circle is less than or equal to the diameter of the first molding edge.

42. The light guide plate mold according to claim 38, characterized in that: The plurality of molding grooves further include a second molding groove, wherein the second molding groove includes two second concave surfaces and one second concave surface, and / or The plurality of molding grooves further include a third molding groove including one of the second concave surfaces and one of the second concave surfaces.

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