Light guide plate assembly, backlight module, display screen and display equipment

Abstract

The utility model discloses a light guide plate assembly, a backlight module, a display screen and a display device, the light guide plate assembly comprises at least one first light guide plate, the first side of the first light guide plate is provided with a first light incident surface, the second side of the first light guide plate is provided with a light emergent surface, and the first light guide plate is configured to be suitable for diverging passing light; the first light guide plate and the second light guide plate are distributed in the length direction of the second light guide plate, the second light guide plate is arranged on the second side of the first light guide plate, and a second light inlet face is arranged on the side, close to the light outlet face, of the second light guide plate and is suitable for receiving light emitted from the light outlet face. According to the light guide plate assembly provided by the utility model, the first light guide plate can diffuse the light rays before the light rays enter the second light guide plate to obtain relatively uniform light rays, so that the light emitting uniformity of the light incident side of the light guide plate assembly can be improved, and the size of a light mixing area of a display screen can be effectively reduced; and the frame of the display screen can be narrower.

Description

Technical Field

[0001] The utility model belongs to the technical field of display equipment, and in particular relates to a light guide plate component, a backlight module, a display screen and a display equipment. Background Art

[0002] Backlight is an essential part of passive light-emitting displays such as liquid crystal displays. The function of the backlight module is to provide sufficient brightness and evenly distributed light so that the liquid crystal display module can display images normally. The backlight module generally includes LED lights and light guide structures. The existing light guide structure is a light guide plate, but this light guide structure requires a larger light mixing area to mix the light evenly, which cannot meet the current market's pursuit of narrow frame design. Utility Model Content

[0003] The first purpose of the utility model is to provide a new technical solution for a light guide plate assembly, which can at least solve the technical problem that the existing light guide structure requires a larger light mixing area to mix the light evenly.

[0004] The second purpose of the utility model is to provide a new technical solution for a backlight module.

[0005] The third purpose of the utility model is to provide a new technical solution for a display screen.

[0006] A fourth object of the present invention is to provide a new technical solution for a display device.

[0007] According to a first aspect of the utility model, a light guide plate assembly is provided, comprising: a first light guide plate, a first light entrance surface is provided on a first side of the first light guide plate, a light exit surface is provided on a second side of the first light guide plate, and the first light guide plate is configured to be suitable for diverging the light passing through; a second light guide plate, the first light guide plate and the second light guide plate are distributed along the length direction of the second light guide plate, the second light guide plate is provided on the second side of the first light guide plate, a second light entrance surface is provided on a side of the second light guide plate close to the light exit surface, and the second light entrance surface is suitable for receiving the light emitted from the light exit surface.

[0008] Optionally, the light guide plate assembly includes a plurality of first light guide plates, the plurality of first light guide plates are distributed along the length direction of the second light guide plate, and in two adjacent first light guide plates, the light emitting surface of one of the first light guide plates faces the first light incident surface of the other first light guide plate.

[0009] Optionally, the first light incident surface, the second light incident surface and the light emitting surface are all configured as rough surfaces.

[0010] Optionally, the first light incident surface and / or the second light incident surface has a plurality of protrusions or depressions distributed along a width direction of the second light guide plate.

[0011] Optionally, a first serration is provided on the first side of the first light guide plate, and the serration surface of the first serration is formed as the first light incident surface; and / or a second serration is provided on the side of the second light guide plate close to the light emitting surface, and the serration surface of the second serration is formed as the second light incident surface.

[0012] Optionally, a thickness of the second side of the first light guide plate is equal to a thickness of a side of the second light guide plate close to the first light guide plate.

[0013] Optionally, a thickness of the first side of the first light guide plate is greater than a thickness of the second side of the first light guide plate.

[0014] Optionally, the first light guide plate includes a wedge-shaped segment, the light emitting surface is arranged on a side of the wedge-shaped segment away from the first light incident surface, and a thickness of the wedge-shaped segment gradually decreases from the first light incident surface to the light emitting surface.

[0015] Optionally, a thickness of the first light guide plate is the same as a thickness of the second light guide plate.

[0016] Optionally, a gap between the light emitting surface and the second light incident surface is less than 0.15 mm.

[0017] Optionally, the light guide plate assembly further includes: a fixing member, wherein the fixing member is respectively connected to the first light guide plate and the second light guide plate.

[0018] Optionally, the fixing member is configured as a light shielding tape, the light shielding tape is located on one side of the first light guide plate in its thickness direction, and the light shielding tape is bonded to the first light guide plate and the second light guide plate.

[0019] Optionally, the light-shielding tape covers one side of the first light guide plate in its thickness direction.

[0020] According to a second aspect of the utility model, a backlight module is provided, comprising any one of the above-mentioned light guide plate assemblies.

[0021] Optionally, the backlight module further includes: a light emitting body, wherein the light emitting body is arranged on a first side of the first light guide plate, and in a thickness direction of the first light guide plate, a size of the first light guide plate is smaller than a size of the light emitting body.

[0022] According to a third aspect of the utility model, a display screen is provided, comprising any one of the above-mentioned light guide plate assembly or the above-mentioned backlight module.

[0023] Optionally, the display screen includes a visible area, and the distance between the second light incident surface and the visible area is greater than or equal to 2 mm.

[0024] According to a fourth aspect of the present invention, a display device is provided, comprising any one of the display screens described above.

[0025] According to the light guide plate assembly of the utility model, the first light guide plate can be set to diverge the light before it enters the second light guide plate to obtain more uniform light, which can improve the uniformity of light emission on the light incident side of the light guide plate assembly, thereby effectively reducing the size of the mixed light area of ​​the display screen, and then the border of the display screen can be made narrower, which can meet the market's pursuit of narrow border design.

[0026] Other features and advantages of the present invention will become apparent from the following detailed description of exemplary embodiments of the present invention with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present invention and, together with the description, serve to explain the principles of the present invention.

[0028] Figure 1 1 is a front view of a backlight module according to an embodiment of the present invention (the area within the dotted line frame is the visible area of ​​the display screen);

[0029] Figure 2 It is a left view of a backlight module according to an embodiment of the utility model;

[0030] Figure 3 It is a partial structural schematic diagram of a first light guide plate of a backlight module according to an embodiment of the utility model;

[0031] Figure 4 It is a partial structural schematic diagram of the connection between the first light guide plate and the second light guide plate of the backlight module according to an embodiment provided by the utility model;

[0032] Figure 5 yes Figure 2 A magnified view of the structure at the center circle C;

[0033] Figure 6 is a left side view of a backlight module according to another embodiment of the utility model;

[0034] Figure 7 yes Figure 6 A magnified view of the structure at the center circle D;

[0035] Figure 8 It is a structural schematic diagram of an assembly fixture according to an embodiment of the utility model.

[0036] Reference numerals:

[0037] Backlight module 100;

[0038] First light guide plate 10; straight section 11; first sawtooth portion 11a; wedge-shaped section 12;

[0039] Second light guide plate 20; second sawtooth portion 21;

[0040] Fixing member 30; light emitting body 40; flexible circuit board 50; light-isolating tape 60;

[0041] Assembly fixture 200 ; base 210 ; elastic member 220 . DETAILED DESCRIPTION

[0042] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0043] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0044] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered as part of the specification.

[0045] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0046] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0047] The light guide plate assembly according to the embodiment of the utility model is first described in detail below with reference to the accompanying drawings.

[0048] like Figures 1 to 5 As shown, the light guide plate assembly according to the embodiment of the present invention includes at least one first light guide plate 10 and a second light guide plate 20 .

[0049] Specifically, a first light incident surface is provided on the first side of the first light guide plate 10, and a light emitting surface is provided on the second side of the first light guide plate 10. The first light guide plate 10 is configured to be suitable for diverging the passing light. The first light guide plate 10 and the second light guide plate 20 are distributed along the length direction of the second light guide plate 20. The second light guide plate 20 is provided on the second side of the first light guide plate 10. A second light incident surface is provided on the side of the second light guide plate 20 close to the light emitting surface. The second light incident surface is suitable for receiving the light emitted from the light emitting surface.

[0050] In other words, if Figures 1 to 5 As shown, the light guide plate assembly according to the embodiment of the utility model mainly includes at least one first light guide plate 10 and a second light guide plate 20, wherein the first light guide plate 10 can diverge the light passing through itself, the first light guide plate 10 and the second light guide plate 20 are distributed along the length direction of the second light guide plate 20, the whole of the first light guide plate 10 and a part of the second light guide plate 20 close to the first light guide plate 10 correspond to the mixed light area of ​​the display screen, and the other part of the second light guide plate 20 corresponds to the visible area of ​​the display screen.

[0051] Specifically, the first light guide plate 10 has a first side and a second side that are relatively arranged in the length direction of the second light guide plate 20. The surface of the first side of the first light guide plate 10 is formed as a first light incident surface suitable for light to enter, and the surface of the second side of the first light guide plate 10 is formed as a light exiting surface suitable for light to emit. The second light guide plate 20 is arranged on the second side of the first light guide plate 10, and the surface of the second light guide plate 20 on the side close to the light exiting surface is formed as a second light incident surface suitable for light to enter. The light diverged by the first light guide plate 10 can be received through the second light incident surface.

[0052] Therefore, according to the light guide plate assembly of the embodiment of the utility model, the first light guide plate 10 can be set to diverge the light before it enters the second light guide plate 20 to obtain more uniform light, which can improve the uniformity of light emission on the light incident side of the light guide plate assembly, thereby effectively reducing the size of the mixed light area of ​​the display screen, and then the border of the display screen can be made narrower, which can meet the market's pursuit of narrow border design.

[0053] According to one embodiment of the utility model, the light guide plate assembly includes a plurality of first light guide plates 10, and the plurality of first light guide plates 10 are distributed along the length direction of the second light guide plate 20. Among two adjacent first light guide plates 10, the light emitting surface of one of the first light guide plates 10 faces the first light incident surface of the other first light guide plate 10.

[0054] That is to say, the light guide plate assembly may include a plurality of first light guide plates 10, and the plurality of first light guide plates 10 are distributed along the length direction of the second light guide plate 20, and the first light incident surface and the light emitting surface of the first light guide plate 10 are relatively arranged in the length direction of the second light guide plate 10, and the light emitting surface of each first light guide plate 10 is oriented in the same direction, so that the light emitting surface of one first light guide plate 10 is oriented toward the first light incident surface of another first light guide plate 10, so that the light can be diverged through the plurality of first light guide plates 10 before entering the second light guide plate 20, thereby further improving the uniformity of light emission on the light incident side of the light guide plate assembly.

[0055] It should be noted that the number of the first light guide plates 10 can be determined according to actual needs, and will not be elaborated in this embodiment.

[0056] Optionally, the second light guide plate 20 includes a first light guide layer and a second light guide layer which are stacked.

[0057] In some specific implementations of the present invention, the thickness of the first light guide plate 10 and the second light guide plate 20 is greater than or equal to 0.35 mm.

[0058] In some optional examples of the present invention, the thickness of the first light guide plate 10 and the second light guide plate 20 is greater than or equal to 0.2 mm.

[0059] In some specific implementations of the present invention, the first light incident surface, the second light incident surface and the light emitting surface are all configured as rough surfaces.

[0060] Specifically, the surface of the first side of the first light guide plate 10 is provided with evenly distributed dots, so that the first light incident surface formed by the surface of the first side of the first light guide plate 10 is a rough surface. The rough first light incident surface can diffuse the light by scattering, which is conducive to obtaining more uniform light.

[0061] The surface of the second light guide plate 20 on the side close to the first light incident surface is also provided with evenly distributed dots, so that the second light incident surface formed by the surface of the second light guide plate 20 on the side close to the first light incident surface is a rough surface. The rough second light incident surface can further diffuse the light by scattering, so that the light can be more fully mixed and diffused in the second light guide plate 20, which can improve the uniformity of the light emission on the light incident side of the light guide plate assembly and further reduce the size of the mixed light area of ​​the display screen.

[0062] Furthermore, the surface of the second side of the first light guide plate 10 is provided with evenly distributed dots, so that the light emitting surface formed by the surface of the second side of the first light guide plate 10 is a rough surface. The rough light emitting surface is conducive to the passage of light, and is conducive to controlling the propagation and distribution of light, thereby achieving the effect of uniform light propagation.

[0063] According to an embodiment of the present invention, the first light incident surface and / or the second light incident surface has a plurality of protrusions or depressions distributed along the width direction of the second light guide plate 20 .

[0064] like Figure 3 and Figure 4 As shown, in order to improve the uniformity of light emission on the light incident side of the light guide plate assembly, a plurality of protrusions or depressions distributed along the width direction of the second light guide plate 20 are provided on the first light incident surface, and a plurality of protrusions or depressions distributed along the width direction of the second light guide plate 20 are provided on the second light incident surface.

[0065] In this embodiment, the raised or recessed structures on the first light incident surface and the second light incident surface can change the propagation path of light, enhance the reflection and diffusion of light, and improve the uniformity of light, which is beneficial to reduce the size of the mixed light area of ​​the display screen, and is beneficial to making the border of the display screen narrower, making the appearance of the display screen thinner and lighter.

[0066] In some specific embodiments of the present invention, a first serrated portion 11a is provided on the first side of the first light guide plate 10, and the serrated surface of the first serrated portion 11a is formed as a first light incident surface; and / or, a second serrated portion 21 is provided on the side of the second light guide plate 20 close to the light emitting surface, and the serrated surface of the second serrated portion 21 is formed as a second light incident surface.

[0067] Specifically, Figure 3 As shown, a first serration portion 11a is provided on the first side of the first light guide plate 10. The first serration portion 11a may be composed of a plurality of triangular teeth distributed along the width direction of the second light guide plate 20. The serration surface of the first serration portion 11a forms a first light incident surface. The first serration portion 11a can effectively guide light to propagate in the first light guide plate 10. After the light passes through the first serration portion 11a, the luminous angle of the light becomes larger, which can improve the diffusion effect of the light and is beneficial to reducing the size of the frame on the light incident side.

[0068] Furthermore, if Figure 4 As shown, a second serration portion 21 is provided on the side of the second light guide plate 20 close to the light emitting surface. The second serration portion 21 may be composed of a plurality of triangular teeth distributed along the width direction of the second light guide plate 20. The serration surface of the second serration portion 21 forms a second light incident surface. The second serration portion 21 can effectively guide the light to propagate in the second light guide plate 20. The luminous angle of the light becomes larger after passing through the first serration portion 11a, which can improve the diffusion effect of the light. The cooperation between the first serration portion 11a and the second serration portion 21 can further improve the diffusion effect of the light, which is beneficial to reducing the size of the frame on the light incident side.

[0069] Optionally, the first light guide plate 10 and the second light guide plate 20 can be formed by hot pressing and cutting, respectively. The hot pressing and cutting can produce thinner first light guide plates 10 and second light guide plates 20.

[0070] Optionally, the first light guide plate 10 and the second light guide plate 20 are respectively integrally formed injection molded parts, and the first sawtooth portion 11 a and the second sawtooth portion 21 with a larger tooth height can be prepared by injection molding.

[0071] According to an embodiment of the present invention, the thickness of the second side of the first light guide plate 10 is equal to the thickness of the side of the second light guide plate 20 close to the first light guide plate 10 .

[0072] That is to say, Figure 5 and Figure 7 As shown, in order to ensure the utilization rate of light, the thickness of the second side of the first light guide plate 10 and the thickness of the second light guide plate 20 close to the first light guide plate 10 can be designed to be equal, thereby ensuring the smooth propagation of light between the first light guide plate 10 and the second light guide plate 20 and avoiding light loss and uneven light emission due to thickness difference.

[0073] In some specific implementations of the present invention, the thickness of the first side of the first light guide plate 10 is greater than the thickness of the second side of the first light guide plate 10 .

[0074] like Figure 7 As shown, the thickness of the first light guide plate 10 is different in the length direction of the second light guide plate 20. Specifically, the thickness of the first side of the first light guide plate 10 is greater than the thickness of the second side of the first light guide plate 10, so that a first light incident surface with a larger width can be designed, which can ensure the light utilization rate, facilitate better transmission of light to the second light guide plate 20, and ensure the lightness of the second light guide plate 20; and the thickness of the second side of the first light guide plate 20 and the thickness of the second light guide plate 20 close to the first light guide plate 20 can be designed to be equal to each other, so as to ensure the smooth propagation of light between the first light guide plate 10 and the second light guide plate 20.

[0075] According to an embodiment of the present invention, the first light guide plate 10 includes a wedge-shaped segment 12, the light emitting surface is arranged on a side of the wedge-shaped segment 12 away from the first light incident surface, and the thickness of the wedge-shaped segment 12 gradually decreases from the first light incident surface to the light emitting surface.

[0076] Specifically, Figure 7 As shown, the first light guide plate 10 includes a straight section 11 and a wedge-shaped section 12, and the straight section 11 and the wedge-shaped section 12 are distributed along the length direction of the second light guide plate 20. The straight section 11 is arranged on the side of the wedge-shaped section 12 away from the second light guide plate 20, the first light incident surface is arranged on the side of the straight section 11 away from the wedge-shaped section 12, and the light emitting surface is arranged on the side of the wedge-shaped section 12 away from the first light incident surface. The thickness of the wedge-shaped section 12 gradually decreases from the first light incident surface to the light emitting surface.

[0077] The wedge-shaped segment 12 has a first surface and a second surface in the thickness direction. The specific structure of the wedge-shaped segment 12 includes but is not limited to the following situations:

[0078] Case 1: the first surface is parallel to the surface of the second light guide plate 20 in the thickness direction, and the second surface is inclined to the surface of the second light guide plate 20 in the thickness direction;

[0079] Case 2: the first surface is inclined to the surface of the second light guide plate 20 in the thickness direction, and the second surface is parallel to the surface of the second light guide plate 20 in the thickness direction;

[0080] Case 3: Both the first surface and the second surface are inclined to the surface of the second light guide plate 20 in the thickness direction. For example, the cross section of the wedge-shaped segment 12 is an isosceles trapezoid.

[0081] It should be noted that the specific structure of the wedge segment 12 can be determined according to actual needs and will not be described in detail in this embodiment.

[0082] In this embodiment, the wedge-shaped segment 12 is provided to make the thickness of the first light guide plate 10 gradually transition from thick to thin, which is beneficial for better transmission of light to the second light guide plate 20 .

[0083] In some specific implementations of the present invention, the thickness of the first light guide plate 10 is the same as the thickness of the second light guide plate 20 .

[0084] In other words, Figure 5 As shown, in order to improve the overall lightness and thinness of the light guide plate assembly, the first light guide plate 10 and the second light guide plate 20 can be designed to have the same thickness, that is, the first light guide plate 10 and the second light guide plate 20 are both flat plate structures with the same thickness.

[0085] According to an embodiment of the present invention, the gap between the light emitting surface and the second light incident surface is less than 0.15 mm.

[0086] If the gap between the light emitting surface and the second light incident surface is too large, light will be emitted from the gap between the light emitting surface and the second light incident surface. The light emitted from the gap will easily affect the luminous uniformity of the light incident side of the light guide plate assembly, thereby affecting the performance of the display screen.

[0087] Therefore, in this embodiment, the gap between the light emitting surface and the second light incident surface is less than 0.15 mm. This compact design can avoid the gap between the light emitting surface and the second light incident surface being too large, which causes light to be emitted from the gap and affects the efficiency of light being transmitted from the first light guide plate 10 to the second light guide plate 20, and can ensure the uniformity of light emission on the light incident side of the light guide plate assembly.

[0088] In some specific implementations of the present invention, the light guide plate assembly further includes: a fixing member 30 , and the fixing member 30 is connected to the first light guide plate 10 and the second light guide plate 20 respectively.

[0089] That is to say, Figure 5 and Figure 7 As shown, the first light guide plate 10 and the second light guide plate 20 can be connected together by a fixing member 30, so there is no need to set up an additional connection structure between the first light guide plate 10 and the second light guide plate 20. The structure is simple, which can ensure a stable connection between the first light guide plate 10 and the second light guide plate 20, prevent the light guide plate from shifting or deforming due to vibration or external force, and ensure the stable propagation of light.

[0090] According to an embodiment of the present invention, the fixing member 30 is configured as a light shielding tape, which is located on one side of the first light guide plate 10 in the thickness direction thereof, and is bonded to the first light guide plate 10 and the second light guide plate 20 .

[0091] In this embodiment, if Figure 5 and Figure 7 As shown, the fixing member 30 is configured as a light-shielding tape, which not only has the function of connecting the first light guide plate 10 and the second light guide plate 20, but also can effectively block the light leakage from the edges of the first light guide plate 10 and the second light guide plate 20 to affect the luminous uniformity of the light incident side of the light guide plate assembly, and can also improve the utilization rate of light.

[0092] In some optional examples of the present invention, the side of the light-shielding tape close to the first light guide plate 10 is white, and the side of the light-shielding tape away from the first light guide plate 10 is black.

[0093] In some specific implementations of the present invention, the light-shielding tape covers one side of the first light guide plate 10 in the thickness direction thereof.

[0094] That is to say, the light-shielding tape covers one side of the first light guide plate 10 in the thickness direction, which can prevent light leakage in all directions, thereby ensuring the effective use of light and high-quality display of the display screen.

[0095] In summary, according to the light guide plate assembly of the embodiment of the utility model, the first light guide plate 10 can be set to diverge the light before it enters the second light guide plate 20 to obtain more uniform light, which can improve the uniformity of light emission on the light incident side of the light guide plate assembly, thereby effectively reducing the size of the mixed light area of ​​the display screen, and then the border of the display screen can be made narrower, which can meet the market's pursuit of narrow border design.

[0096] like Figure 8 As shown, an embodiment of the utility model further provides an assembly fixture 200 of a light guide plate assembly, the assembly fixture 200 includes a base 210, one side of the base 210 is provided with an assembly groove adapted to the light guide assembly, the assembly groove has a first side wall and a second side wall arranged oppositely in the distribution direction of the first light guide plate 10 and the second light guide plate 20, the second side wall of the assembly groove is provided with one or more elastic members 220, the elastic member 220 can be a spring sheet, and the elastic member 220 can provide elastic force in the distribution direction of the first light guide plate 10 and the second light guide plate 20.

[0097] like Figure 8As shown, when assembling the light guide plate assembly according to the embodiment of the utility model, the first light guide plate 10 and the second light guide plate 20 are placed in the assembly groove, the first light guide plate 10 is close to the first side wall of the assembly groove, and the second light guide plate 20 is close to the second side wall of the assembly groove. The second light guide plate 20 can be pushed toward the first light guide plate 10 by the action of the elastic member 220, and the first light guide plate 10 abuts against the first side wall of the assembly groove. Under the action of the elastic member 220, the assembly gap between the first light guide plate 10 and the second light guide plate 20 can be made small enough, and then the first light guide plate 10 and the second light guide plate 20 are connected together by the fixing member 30, and finally the assembled light guide plate assembly can be removed from the assembly groove.

[0098] like Figures 1 to 7 As shown, the embodiment of the utility model further provides a backlight module 100, including the light guide plate assembly described in any of the above embodiments. Since the light guide plate assembly according to the embodiment of the utility model has the above technical effects, the backlight module 100 according to the embodiment of the utility model also has corresponding technical effects, which will not be described in detail in this embodiment.

[0099] According to one embodiment of the utility model, the backlight module 100 also includes: a light-emitting body 40, a flexible circuit board 50 and a light-isolating tape 60, the light-emitting body 40 is arranged on the first side of the first light guide plate 10, the light-emitting body 40 is arranged on the flexible circuit board 50, the flexible circuit board 50 is arranged on one side of the first light guide plate 10 in its thickness direction, the light-isolating tape 60 is arranged between the flexible circuit board 50 and the first light guide plate 10, and the light-isolating tape 60 is bonded to the first light guide plate 10 and the flexible circuit board 50.

[0100] In other words, if Figures 1 to 7 As shown, the backlight module 100 according to the embodiment of the utility model mainly includes a light guide plate assembly, a light emitting body 40, a flexible circuit board 50 and a light-isolating tape 60, wherein the light emitting body 40 can be an LED lamp, and the light emitting body 40 is arranged on the first side of the first light guide plate 10, so that the light emitted by the light emitting body 40 can be incident on the first light guide plate 10 from the first light incident surface, the flexible circuit board 50 can be located on the side of the first light guide plate 10 away from the fixing member 30, the light emitting body 40 is fixed to the flexible circuit board 50, and the light emitting body 40 is electrically connected to the flexible circuit board 50, so that the light emitting body 40 can be powered by the flexible circuit board 50, and the light-isolating tape 60 is a double-sided tape, and the light-isolating tape 60 is located between the first light guide plate 10 and the flexible circuit board 50, the first side of the light-isolating tape 60 is bonded to the first light guide plate 10, and the second side of the light-isolating tape 60 is bonded to the flexible circuit board 50.

[0101] In this embodiment, the light-isolating tape 60 can be used to fix the flexible circuit board 50, and can prevent light from being reflected by the flexible circuit board 50 and entering the first light guide plate 10 to form stray light corresponding to the color of the flexible circuit board 50, thereby ensuring high-quality display of the display screen.

[0102] In some optional embodiments of the present invention, the side of the light-isolating tape 60 close to the first light guide plate 10 is white, and the side of the light-isolating tape close to the flexible circuit board 50 is black.

[0103] like Figure 1 As shown, in some specific embodiments of the present invention, the backlight module 100 includes a plurality of light-emitting bodies 40, and the plurality of light-emitting bodies 40 are evenly distributed along the width direction of the second light guide plate 20, which can improve the uniformity of light emission on the light incident side of the light guide plate assembly and is conducive to reducing the size of the mixed light area.

[0104] like Figure 1 As shown, the spacing of the light-emitting body 40 can be recorded as P, and the size of the mixed light area in the distribution direction of the first light guide plate and the second light guide plate can be recorded as A. In the existing integrated light guide plate, it is generally necessary to ensure that A / P ≥ 1.0 to avoid the problem of uneven light emission on the light incident side of the display screen, but this structure cannot achieve a narrower border, which affects the screen viewing experience; in the embodiment of the utility model, by setting the first light guide plate and the second light guide plate, the A / P value can be less than 1, the border of the display screen can be made narrower, and the market pursuit of narrow border design can be met.

[0105] According to an embodiment of the present invention, in the thickness direction of the first light guide plate 10 , the size of the first light guide plate 10 is smaller than the size of the light emitting body 40 .

[0106] Specifically, in order to ensure the lightness and thinness of the product, in the thickness direction of the first light guide plate 10 , the size of the first light guide plate 10 is smaller than the size of the light emitting body 40 (eg, LED lamp).

[0107] In some optional examples of the present invention, in the thickness direction of the first light guide plate 10 , the size of the light emitting body 40 is greater than or equal to 0.40 mm, and the size of the first light guide plate 10 is greater than or equal to 0.2 mm.

[0108] The embodiment of the utility model further provides a display screen, comprising the light guide plate assembly or backlight module 100 described in any of the above embodiments and a frame, wherein the frame covers the light mixing area of ​​the display screen (i.e., the light mixing area of ​​the light guide plate assembly). Since the light guide plate assembly according to the embodiment of the utility model has the above technical effects, the display screen according to the embodiment of the utility model also has the corresponding technical effects, which will not be described in detail in this embodiment.

[0109] According to one embodiment of the utility model, the display screen includes a visible area, that is, the portion of the display screen that is not covered by the frame, and the second light incident surface (that is, the joint position of the first light guide plate 10 and the second light guide plate 20) is greater than or equal to 2 mm from the visible area, thereby effectively preventing users from observing the gap between the first light guide plate 10 and the second light guide plate 20, thereby ensuring the viewing experience of the display screen.

[0110] The embodiment of the utility model further provides a display device, including the display screen described in the above embodiment. Since the light guide plate assembly according to the embodiment of the utility model has the above technical effects, the display device according to the embodiment of the utility model also has corresponding technical effects, which will not be described in detail in this embodiment.

[0111] Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present invention. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present invention. The scope of the present invention is defined by the appended claims.

Claims

1. A light guide plate assembly, It is characterized in that include: at least one first light guide plate, wherein a first side of the first light guide plate is provided with a first light incident surface, a second side of the first light guide plate is provided with a light exit surface, and the first light guide plate is configured to diverge the light passing therethrough; A second light guide plate, the first light guide plate and the second light guide plate are distributed along the length direction of the second light guide plate, the second light guide plate is arranged on the second side of the first light guide plate, and a second light incident surface is provided on the side of the second light guide plate close to the light exiting surface, and the second light incident surface is suitable for receiving light emitted from the light exiting surface.

2. The light guide plate assembly according to claim 1, It is characterized in that The light guide plate assembly includes a plurality of the first light guide plates, and the plurality of the first light guide plates are distributed along the length direction of the second light guide plate. In two adjacent first light guide plates, the light emitting surface of one of the first light guide plates faces the first light incident surface of the other first light guide plate.

3. The light guide plate assembly according to claim 1, It is characterized in that The first light incident surface, the second light incident surface and the light emitting surface are all configured as rough surfaces.

4. The light guide plate assembly according to claim 1, It is characterized in that The first light incident surface and / or the second light incident surface has a plurality of protrusions or depressions distributed along the width direction of the second light guide plate.

5. The light guide plate assembly according to claim 1, It is characterized in that A first sawtooth portion is provided on the first side of the first light guide plate, and a sawtooth surface of the first sawtooth portion is formed as the first light incident surface; and / or, A second serration portion is provided on a side of the second light guide plate close to the light emitting surface, and a serration surface of the second serration portion forms the second light incident surface.

6. The light guide plate assembly according to claim 1, It is characterized in that The thickness of the second side of the first light guide plate is equal to the thickness of the side of the second light guide plate close to the first light guide plate.

7. The light guide plate assembly according to claim 1, It is characterized in that A thickness of the first side of the first light guide plate is greater than a thickness of the second side of the first light guide plate.

8. The light guide plate assembly according to claim 7, It is characterized in that The first light guide plate includes a wedge-shaped segment, the light emitting surface is arranged on a side of the wedge-shaped segment away from the first light incident surface, and the thickness of the wedge-shaped segment gradually decreases from the first light incident surface to the light emitting surface.

9. The light guide plate assembly according to claim 1, It is characterized in that The thickness of the first light guide plate is the same as the thickness of the second light guide plate.

10. The light guide plate assembly according to any one of claims 1 to 9, It is characterized in that A gap between the light emitting surface and the second light incident surface is less than 0.15 mm.

11. The light guide plate assembly according to any one of claims 1 to 9, It is characterized in that Also includes: A fixing member, wherein the fixing member is connected to the first light guide plate and the second light guide plate respectively.

12. The light guide plate assembly according to claim 11, It is characterized in that The fixing member is configured as a light shielding tape, the light shielding tape is located on one side of the first light guide plate in the thickness direction thereof, and the light shielding tape is bonded to the first light guide plate and the second light guide plate.

13. The light guide plate assembly according to claim 12, It is characterized in that The light shielding tape covers one side of the first light guide plate in the thickness direction thereof.

14. A backlight module, It is characterized in that A light guide plate assembly comprising any one of claims 1 to 13.

15. The backlight module according to claim 14, It is characterized in that Also includes: A light emitting body is arranged on a first side of the first light guide plate, and in a thickness direction of the first light guide plate, a size of the first light guide plate is smaller than a size of the light emitting body.

16. A display screen, It is characterized in that The invention comprises the light guide plate assembly according to any one of claims 1 to 13, or the backlight module according to claim 14 or 15.

17. The display screen according to claim 16, It is characterized in that The display screen includes a visible area, and the distance between the second light incident surface and the visible area is greater than or equal to 2 mm.

18. A display device, It is characterized in that Includes the display screen according to claim 16 or 17.

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