Backlight module and display device

Abstract

The utility model discloses a backlight module and a display device, and relates to the technical field of display. The backlight module comprises a back plate, a light bar, a light guide plate and an adhesive assembly, wherein the light bar comprises a light plate and a plurality of light sources arranged on the light plate; the light guide plate comprises a light guide plate body and a plurality of light guide structures arranged on the light inlet side of the light guide plate body at intervals, the light guide structures are inserted between every two adjacent light sources, and the bottom faces of the light guide structures are fixed to the lamp panel in an adhesive mode. The adhesive assembly is arranged on the light incident side of the back plate, the adhesive assembly comprises a first adhesive piece, the first adhesive piece is provided with a back adhesive surface, the first adhesive piece comprises a first horizontal adhesive part and a vertical adhesive part which are formed by bending and are perpendicular to each other, the lamp panel is adhered to the back adhesive surface of the first horizontal adhesive part, and the side surface of the light guide structure is adhered to the back adhesive surface of the vertical adhesive part. The backlight module not only can reduce light attenuation after aging test, but also can avoid image quality abnormity caused by light bar displacement, and the display effect of the backlight module is improved.

Description

Technical Field

[0001] This utility model relates to the field of display technology, and in particular to a backlight module and display device. Background Technology

[0002] The backlight module of the display device provides a light source for the display panel. In order to achieve energy saving and improve service life, the light source in the backlight module is an LED light source. The LED light source is set as an LED lamp board, and the LED lamp board is connected to the light guide plate so that the light emitted by the LED light source is evenly distributed through the light guide plate.

[0003] To reduce light decay after aging tests of the backlight module, Figure 1 This is a schematic diagram showing the adhesion position of the castle adhesive on the light panel in existing technology. Figure 2 This is a schematic diagram of how a light guide plate is attached to a lamp panel using adhesive tape in existing technology. Figure 3 This is a schematic diagram of the structure of a backlight module in the prior art, such as... Figures 1-3 As shown, the LED strip 2 and the light guide plate 3 are glued together with adhesive 6 and then mounted on the back plate 1. During the aging test of the backlight module, the light guide plate 3 will expand and contract due to heat, causing displacement. This displacement will pull the LED strip 2 to move along with it. The displacement of the LED strip 2 may cause light leakage, or even cause tearing at the corner of the LED strip 2 or disconnection of the LED strip 2 from the connector on the rigid circuit board, resulting in a black screen in the backlight module or abnormal lighting of the LED strip 2. Utility Model Content

[0004] The purpose of this invention is to provide a backlight module and display device that can reduce light decay after aging tests and avoid image quality abnormalities caused by lamp strip displacement.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] Backlight module, comprising:

[0007] Back panel;

[0008] A light strip includes a light panel and multiple light sources disposed on the light panel;

[0009] A light guide plate includes a light guide plate body and a plurality of light guide structures spaced apart on the light-incident side of the light guide plate body. The light guide structures are inserted between two adjacent light sources, and the bottom surface of the light guide structures is bonded and fixed to the lamp plate.

[0010] An adhesive assembly is disposed on the light-incident side of the back plate. The adhesive assembly includes a first adhesive component, which has an adhesive backing surface. The first adhesive component includes a first horizontal adhesive portion and a vertical adhesive portion formed by bending and perpendicular to each other. The lamp board is bonded to the adhesive backing surface of the first horizontal adhesive portion, and the side of the light guide structure is bonded to the adhesive backing surface of the vertical adhesive portion.

[0011] As an optional solution for the backlight module, the adhesive assembly further includes a second adhesive component, which is disposed on the side of the vertical adhesive portion away from the adhesive backing surface, and is bonded to the back plate.

[0012] As an optional solution for the backlight module, the end of the light guide structure away from the main body of the light guide plate is flush with the end face of the lamp plate near the light source.

[0013] As an optional embodiment of the backlight module, the backlight module further includes a reflector, which is disposed opposite to the lamp panel;

[0014] The first adhesive component further includes a second horizontal adhesive portion formed by bending one end of the vertical adhesive portion away from the first horizontal adhesive portion and disposed parallel to and opposite to the first horizontal adhesive portion, wherein the reflector is bonded to the adhesive backing surface of the second horizontal adhesive portion.

[0015] As an optional solution for the backlight module, the back plate includes a bottom plate, a side plate, and a top plate. On the light-incident side of the back plate, the bottom plate, the side plate, and the top plate are arranged to form a lampshade. The assembly of the adhesive component, the light strip, the reflector, and the light guide plate is inserted into the lampshade through the opening of the lampshade, and the second adhesive component is bonded to the side plate.

[0016] As an optional solution for the backlight module, the assembly of the adhesive component, the light strip, the reflector and the light guide plate is interference-fitted with the inner cavity of the lamp cover.

[0017] As an optional embodiment of the backlight module, the adhesive assembly further includes an elastic adhesive element disposed between the adhesive backing surface of the second horizontal bonding portion and the reflector.

[0018] As an alternative to the backlight module, the elastic adhesive includes foam adhesive.

[0019] As an alternative to the backlight module, the second adhesive component includes double-sided adhesive.

[0020] The display device includes a backlight module as described in any of the above embodiments.

[0021] The beneficial effects of this utility model are:

[0022] The backlight module provided by this utility model uses an adhesive assembly to fix the adhesive assembly to the light-incident side of the back plate. The lamp plate of the light strip is bonded and fixed by the adhesive backing surface of the first horizontal adhesive part of the first adhesive component. The light guide structure on the light-incident side of the light guide plate body is inserted between two adjacent light sources, and the bottom surface of the light guide structure is bonded and fixed to the lamp plate. The side surface of the light guide structure is bonded to the adhesive backing surface of the vertical adhesive part. In other words, both the light-incident side of the light guide plate and the light strip are fixed to the adhesive assembly, and the adhesive assembly is fixed to the light-incident side of the back plate. When the light guide plate is displaced due to thermal expansion and contraction, the position of the light strip and the light guide plate on the light-incident side remains unchanged, avoiding light decay caused by gaps between the light strip and the light guide plate. At the same time, it avoids the light strip from displacing and disconnecting from the connector on the rigid circuit board, thereby avoiding black screen or abnormal lamp lighting in the backlight module and improving the display effect of the backlight module.

[0023] The display device provided by this utility model, by using the aforementioned backlight module, can effectively avoid image quality abnormalities caused by the backlight module after aging tests, thereby improving the quality of the display device and reducing the scrap rate. Attached Figure Description

[0024] Figure 1 This is a schematic diagram showing the adhesion position of castle adhesive on the light strip in the existing technology;

[0025] Figure 2 This is a schematic diagram of a light guide plate being attached to a light strip using adhesive tape in existing technology;

[0026] Figure 3 This is a schematic diagram of the structure in the prior art where the light guide plate and light strip of the backlight module are fixed in the back plate;

[0027] Figure 4 This is a schematic diagram of the structure of the backlight module provided in this embodiment, in which the light guide plate and the light strip are fixed in the back plate;

[0028] Figure 5 This is a schematic diagram showing the bonding position of the castle adhesive on the light strip according to an embodiment of this utility model;

[0029] Figure 6 This is a schematic diagram of the structure of the light guide plate provided in this embodiment of the invention, which is fixed to the light strip by bonding with castle adhesive;

[0030] Figure 7 This is a structural schematic diagram of the assembly of the adhesive component, light strip, reflector and light guide plate provided in the embodiment of this utility model;

[0031] Figure 8 This is a schematic diagram of the structure of the adhesive component provided in this embodiment of the utility model;

[0032] Figure 9 This is a schematic diagram of the structure of the reflector fixed on the foam adhesive according to an embodiment of the present invention;

[0033] Figure 10 This is a schematic diagram of the structure of the light strip and reflector being bonded to the adhesive assembly according to an embodiment of the present invention.

[0034] In the picture:

[0035] 1. Back panel; 11. Bottom panel; 12. Side panels; 13. Top panel;

[0036] 2. LED strip; 21. LED panel; 22. Light source;

[0037] 3. Light guide plate; 31. Light guide plate body; 32. Light guide structure;

[0038] 4. Adhesive assembly; 41. First adhesive component; 410. Adhesive backing surface; 411. First horizontal adhesive portion; 412. Vertical adhesive portion; 413. Second horizontal adhesive portion; 42. Second adhesive component; 43. Elastic adhesive component;

[0039] 5. Reflector;

[0040] 6. Castle glue. Detailed Implementation

[0041] To make the technical problem solved by this utility model, the technical solution adopted, and the technical effect achieved clearer, the technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0042] The embodiments of this utility model are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0044] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing" should be interpreted broadly. For example, they can refer to fixed connections or detachable connections; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; and connections within two components or interactions between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0045] Unless otherwise expressly specified and limited, "above" or "below" a second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of a second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" of a second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0046] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0047] Figure 4 This is a schematic diagram of the structure of the backlight module provided in this embodiment, showing the light guide plate and light strip fixed in the back plate. Figure 4 As shown, the backlight module provided in this embodiment includes a backplate 1, a light strip 2, and a light guide plate 3. The backplate 1 is used to support the light strip 2 and the light guide plate 3. The light strip 2 is located on the light-incident side of the backplate 1. The light strip 2 includes a light board 21 and multiple light sources 22 disposed on the light board 21. The light board 21 is a printed circuit board. The multiple light sources 22 are spaced apart at one end of the light board 21, and all multiple light sources 22 are electrically connected to the printed circuit board. The printed circuit board is electrically connected to a connector on a rigid circuit board on the backplate 1. The rigid circuit board is electrically connected to an external power supply. The power from the external power supply is provided to the light strip 2 through the rigid circuit board, so that the light sources 22 on the light strip 2 can emit light. The light emitted by the light sources 22 shines on the light guide plate 3, and the light guide plate 3 distributes the light evenly.

[0048] During the aging test of the backlight module, the light guide plate 3 will shift due to thermal expansion and contraction. Since the light-emitting side of the light guide plate 3 is fixed to the back plate 1, the distance between the light-incident side of the light guide plate 3 and the lamp strip 2 will change, causing light decay. In order to reduce light decay, the light-incident side of the light guide plate 3 is bonded and fixed to the lamp plate 21 with adhesive 6. However, when the light guide plate 3 shifts, it will pull the lamp strip 2 to shift as well. The displacement of the lamp strip 2 may cause light leakage, or even cause tearing at the corner of the lamp strip 2 or disconnection of the lamp strip 2 from the connector on the rigid circuit board, resulting in a black screen of the backlight module or abnormal lighting of the lamp strip 2.

[0049] To solve the above-mentioned technical problems, the backlight module provided in this embodiment includes a light guide plate 3 comprising a light guide plate body 31 and a plurality of light guide structures 32 spaced apart on the light-incident side of the light guide plate body 31. The light guide structures 32 are inserted between two adjacent light sources 22, and the bottom surface of the light guide structures 32 is bonded and fixed to the lamp plate 21.

[0050] The light source 22 includes a first emitting surface facing the light guide plate body 31 and a second emitting surface facing away from the light plate 21. The first emitting surface is perpendicular to the light plate 21. The light guide plate body 31 includes a first light-incident surface facing the first emitting surface. The light guide structure 32 includes a second light-incident surface perpendicular to the first light-incident surface, and the second light-incident surface faces away from the light plate 21. Light emitted from the first emitting surface is reflected to the first light-incident surface and enters the light guide plate 3 through the first light-incident surface. The backlight module also includes a reflector 5, which is disposed opposite to the light plate 21. The reflector 5 reflects the light emitted from the second emitting surface of the light source 22 to the second light-incident surface of the light guide structure 32 and enters the light guide plate 3 through the second light-incident surface. This can improve the light utilization rate, compensate for the light emitted from the first emitting surface, and improve the problem of uneven brightness and poor optical quality caused by the short mixing distance of the light source 22, resulting in dark areas between the light sources 22. Furthermore, compared with the prior art, it does not require increasing the distance between the light source 22 and the visible area, which is more conducive to achieving a narrow bezel effect.

[0051] Figure 5 This is a schematic diagram showing the bonding position of the castle adhesive on the light strip according to an embodiment of this utility model. Figure 6 This is a schematic diagram of the structure of the light guide plate provided in this embodiment of the invention, which is fixed to the light strip by bonding with castle adhesive. Figure 5 and Figure 6 As shown, in this embodiment, the bottom surface of the light guide plate 3 and the light guide structure 32 are fixed to the lamp plate 21 by adhesive 6. When bonding the light guide structure 32 to the lamp plate 21, the adhesive 6 is first pasted between two adjacent light sources 22, and then the light guide structure 32 is inserted between the two adjacent light sources 22. The adhesive 6 is located behind the first light-emitting surface. In the prior art (continued to refer to...), the bottom surface of the light guide structure 32 is fixed to the lamp plate 21 by adhesive 6. Figure 2 and Figure 3Because the light guide plate 3 is attached to the side of the light source 22 near the first emitting surface and no light guide structure 32 is provided, when the light guide plate 3 is bonded to the lamp plate 21, the adhesive 6 is attached to the front of the first emitting surface. If the size and thickness of the adhesive 6 are not designed properly, it will cause abnormal image quality on the light-incident side of the backlight module. The light guide plate 3 provided in this embodiment moves the adhesive 6 to the rear of the first emitting surface, avoiding abnormal image quality on the light-incident side of the backlight module caused by unreasonable size and thickness design of the adhesive 6.

[0052] Figure 7 This is a structural schematic diagram of the assembly of the adhesive component, light strip, reflector, and light guide plate provided in this embodiment of the utility model. Figure 8 This is a structural schematic diagram of the adhesive component provided in an embodiment of the present invention, as shown below. Figure 7 and Figure 8 As shown, the backlight module of this embodiment also includes an adhesive component 4. The adhesive component 4 is disposed on the light-incident side of the back plate 1. The adhesive component 4 includes a first adhesive part 41, which has an adhesive backing surface 410. The first adhesive part 41 includes a first horizontal adhesive part 411 and a vertical adhesive part 412 formed by bending and perpendicular to each other. The lamp plate 21 is bonded to the adhesive backing surface 410 of the first horizontal adhesive part 411, and the side of the light guide structure 32 is bonded to the adhesive backing surface 410 of the vertical adhesive part 412.

[0053] The light strip 2 and the light guide plate 3 are fixed by the adhesive component 4. The adhesive component 4 is fixed to the light-incident side of the back plate 1. When the light guide plate 3 expands and contracts with heat, it ensures that the positions of the light strip 2 and the light guide plate 3 on the light-incident side remain unchanged, avoiding light decay caused by gaps between the light strip 2 and the light guide plate 3. At the same time, it prevents the light strip 2 from shifting and disconnecting from the connector on the rigid circuit board, thereby avoiding black screen or abnormal lighting of the light strip 2 in the backlight module.

[0054] It should be noted that, in this embodiment, since the light-incident side of the light guide plate 3 is fixed to the back plate 1 by the adhesive assembly 4, in order to allow for displacement of the light guide plate 3 during thermal expansion and contraction, the light-emitting side of the light guide plate 3 is not fixed or is connected to the back plate 1 by an adhesive with low adhesion, so that the light guide plate 3 is displaced on the light-emitting side.

[0055] The first adhesive component 41 is a single-sided adhesive. The entire lamp board 21 is adhered to the adhesive backing surface 410 of the first horizontal adhesive part 411, increasing the adhesion area of ​​the lamp board 21 and ensuring the stability of the connection between the lamp board 21 and the first adhesive component 41. The bottom surface of the light guide structure 32 is adhered to the lamp board 21 with castle adhesive 6, and the side surface of the light guide structure 32 is adhered to the adhesive backing surface 410 of the vertical adhesive part 412. This increases the adhesion area between the light guide structure 32 and the first adhesive component 41, and also ensures the stability of the connection between the light-incident side of the light guide plate 3 and the adhesive assembly 4. This further reduces the displacement of the light guide plate 3 caused by thermal expansion and contraction, as well as the displacement of the lamp strip 2 along with the light guide plate 3.

[0056] In one embodiment, the adhesive assembly 4 further includes a second adhesive member 42, which is disposed on the side of the vertical adhesive portion 412 opposite to the adhesive backing surface 410, and is bonded to the back plate 1. The first adhesive member 41, to which the light strip 2 and the light guide plate 3 are bonded, is fixed to the back plate 1 by the second adhesive member 42.

[0057] Specifically, the second adhesive component 42 includes double-sided adhesive. One side of the double-sided adhesive is attached to the non-adhesive side of the vertical adhesive portion 412, and the other side is bonded and fixed to the back plate 1.

[0058] Of course, in other embodiments, the first horizontal adhesive portion 411 may be configured as a single-sided adhesive and the vertical adhesive portion 412 may be configured as a double-sided adhesive.

[0059] Furthermore, the end of the light guide structure 32 furthest from the light guide plate body 31 is flush with the end face of the lamp plate 21 closest to the light source 22. With this arrangement, when the second adhesive component 42 is bonded to the back plate 1, the second adhesive component 42 can be bonded to the back plate 1 by pressing the light guide plate 3 firmly, making assembly simpler and ensuring a firm bond between the second adhesive component 42 and the back plate 1.

[0060] In one embodiment, the first adhesive component 41 further includes a second horizontal adhesive portion 413 formed by bending one end of the vertical adhesive portion 412 away from the first horizontal adhesive portion 411, which is parallel to and opposite to the first horizontal adhesive portion 411. The reflector 5 is adhered to the adhesive backing surface 410 of the second horizontal adhesive portion 413. The light guide plate 3, the lamp strip 2, and the reflector 5 are all fixed to the adhesive assembly 4 to form an assembly, which is then assembled with the back plate 1, making assembly simpler.

[0061] The back panel 1 includes a bottom plate 11, side plates 12, and a top plate 13. On the light-incident side of the back panel 1, the bottom plate 11, side plates 12, and top plate 13 enclose to form a lampshade. The assembly of the adhesive component 4, the light strip 2, the reflector 5, and the light guide plate 3 is inserted into the lampshade through the opening. The second adhesive component 42 is bonded to the side plate 12. The reflector 5 is also bonded and fixed by the first adhesive component 41. During assembly, the assembly of the adhesive component 4, the light strip 2, the light guide plate 3, and the reflector 5 is installed into the lampshade as a whole, avoiding the problem of difficult assembly caused by installing the reflector 5 separately at the end, which is not easy to insert into the lampshade, thus improving assembly efficiency.

[0062] Furthermore, the assembly of adhesive component 4, light strip 2, reflector 5, and light guide plate 3 is interference-fitted with the inner cavity of the lampshade. In this way, the opposite side walls of the lampshade can clamp the opposite sides of the assembly of adhesive component 4, light strip 2, light guide plate 3, and reflector 5, thus completing the assembly and positioning of the assembly of adhesive component 4, light strip 2, light guide plate 3, and reflector 5 with the back plate 1. This further improves assembly efficiency and ensures the stability of the connection between the assembly of adhesive component 4, light strip 2, light guide plate 3, and reflector 5 and the back plate 1.

[0063] In one embodiment, the adhesive assembly 4 further includes an elastic adhesive member 43, which is disposed between the adhesive backing surface 410 of the second horizontal adhesive portion 413 and the reflector 5. When the assembly of the adhesive assembly 4, the light strip 2, the light guide plate 3, and the reflector 5 is inserted into the inner cavity of the lampshade, the assembly of the adhesive assembly 4, the light strip 2, the light guide plate 3, and the reflector 5 is subjected to the pressure of the inner cavity wall of the lampshade, and the elastic adhesive member 43 is compressed, which allows the assembly of the adhesive assembly 4, the light strip 2, the light guide plate 3, and the reflector 5 to smoothly enter the lampshade. After the assembly of the adhesive assembly 4, the light strip 2, the light guide plate 3, and the reflector 5 has completely entered the inner cavity of the lampshade, the elastic adhesive member 43 restores its elasticity, which allows the assembly of the adhesive assembly 4, the light strip 2, the light guide plate 3, and the reflector 5 to have an interference fit with the inner cavity of the lampshade. The use of the elastic adhesive component 43 not only fixes the reflector 5 to the second horizontal adhesive part 413, but also makes the assembly of the adhesive component 4, the light strip 2, the light guide plate 3 and the reflector 5 have a certain degree of elasticity, which facilitates the assembly of the adhesive component 4, the light strip 2, the light guide plate 3 and the reflector 5 with the lamp cover.

[0064] In other embodiments, the elastic adhesive 43 may not be provided separately, and the first adhesive 41 may be directly provided as an elastic adhesive.

[0065] Specifically, the elastic adhesive 43 includes foam adhesive. Of course, in other embodiments, the elastic adhesive 43 may also be a rubber block with glue on one side, and the reflector 5 is bonded to the rubber block by the glue on one side of the rubber block.

[0066] Figure 9 This is a schematic diagram of the structure of the reflector fixed on the foam adhesive according to an embodiment of the present invention. Figure 10 This is a schematic diagram of the structure of the light strip and reflector being bonded to the adhesive assembly according to an embodiment of the present invention, as shown below. Figures 7-10As shown, the first adhesive component 41 is a single-sided adhesive, with one side being the adhesive-backed side 410 and the other side being the non-adhesive-backed side. When using the first adhesive component 41 to bond the light strip 2 and the reflector 5, the length of the first adhesive component 41 is the same as the length of the light panel 21 and the length of the reflector 5; the width of the first adhesive component 41 is equal to the sum of the width of the light panel 21, the width of the reflector 5, and the width of the second adhesive component 42. Along the width direction of the first adhesive component 41, the first adhesive component 41 has a first edge and a second edge that are arranged opposite to each other. The end face of the lamp plate 21 away from the light source 22 is aligned with the first edge and bonded to the adhesive backing surface 410 of the first adhesive component 41. The length of the elastic adhesive component 43 is the same as the length of the reflector 5, and the width is also the same as the width of the reflector 5. First, the reflector 5 is bonded to the elastic adhesive component 43, and then the elastic adhesive component 43 is pasted along the second edge to the adhesive backing surface 410 of the first adhesive component 41. A preset gap is left between the lamp plate 21 and the combination of the reflector 5 and the elastic adhesive component 43 on the adhesive backing surface 410 of the first adhesive component 41. After the light strip 2 and the reflector 5 are bonded to the first adhesive component 41, the castle adhesive 6 is pasted between the adjacent light sources 22. Then, the light guide structure 32 of the light guide plate 3 is inserted between the adjacent light sources 22 and fixed to the lamp plate 21 by the castle adhesive 6, thereby realizing the bonding and fixing of the light guide plate 3 and the light strip 2.

[0067] After the light guide plate 3 and the light strip 2 are fixed, the first adhesive part 41 is first bent upward along the end face of the light plate 21 near the light source 22, and then bent inward along the end of the assembly of the reflector 5 and the elastic adhesive part 43 away from the second edge, thereby forming the first horizontal adhesive part 411 and the second horizontal adhesive part 413 that are arranged opposite to each other, and the vertical adhesive part 412 that is vertically connected to the first horizontal adhesive part 411 and the second horizontal adhesive part 413. That is, the assembly of the adhesive component 4, the light strip 2, the light guide plate 3 and the reflector 5 is bent into a U-shaped structure.

[0068] Finally, the assembly of the adhesive component 4, light strip 2, light guide plate 3, and reflector 5, bent into a U-shape, is inserted into the lampshade through the lampshade opening. Since the end face of the light guide structure 32 is flush with the end face of the light plate 21 near the light source 22, the light guide plate 3 is pressed by the end of the light guide plate body 31 away from the light guide structure 32, so that the second adhesive component 42 can be bonded and fixed to the side plate 12 of the back plate 1. At the same time, the assembly of the adhesive component 4, light strip 2, light guide plate 3, and reflector 5 is interference-fitted with the inner cavity of the lampshade, completing the assembly of the light strip 2, light guide plate 3, and reflector 5 with the back plate 1, improving the assembly efficiency.

[0069] This embodiment also provides a display device including the aforementioned backlight module. By using the aforementioned backlight module, the display device can effectively avoid image quality abnormalities caused by the backlight module after aging tests, thereby improving the quality of the display device and reducing the scrap rate.

[0070] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A backlight module, characterized in that, include: Back panel (1); The light strip (2) includes a light panel (21) and a plurality of light sources (22) disposed on the light panel (21); The light guide plate (3) includes a light guide plate body (31) and a plurality of light guide structures (32) spaced apart on the light-incident side of the light guide plate body (31). The light guide structures (32) are inserted between two adjacent light sources (22), and the bottom surface of the light guide structures (32) is bonded and fixed to the lamp plate (21). An adhesive assembly (4) is disposed on the light-incident side of the back plate (1). The adhesive assembly (4) includes a first adhesive component (41), which has an adhesive backing surface (410). The first adhesive component (41) includes a first horizontal adhesive portion (411) and a vertical adhesive portion (412) formed by bending and perpendicular to each other. The lamp plate (21) is bonded to the adhesive backing surface (410) of the first horizontal adhesive portion (411). The side of the light guide structure (32) is bonded to the adhesive backing surface (410) of the vertical adhesive portion (412).

2. The backlight module according to claim 1, characterized in that, The adhesive assembly (4) further includes a second adhesive component (42), which is disposed on the side of the vertical adhesive portion (412) away from the adhesive backing surface (410) and is bonded to the back plate (1).

3. The backlight module according to claim 2, characterized in that, The end of the light guide structure (32) away from the light guide plate body (31) is flush with the end face of the lamp plate (21) near the light source (22).

4. The backlight module according to claim 3, characterized in that, The backlight module also includes a reflector (5), which is disposed opposite to the lamp panel (21); The first adhesive part (41) further includes a second horizontal adhesive part (413) formed by bending one end of the vertical adhesive part (412) away from the first horizontal adhesive part (411) and arranged parallel to and opposite to the first horizontal adhesive part (411), and the reflector (5) is bonded to the adhesive backing surface (410) of the second horizontal adhesive part (413).

5. The backlight module according to claim 4, characterized in that, The back plate (1) includes a bottom plate (11), a side plate (12) and a top plate (13). On the light-incident side of the back plate (1), the bottom plate (11), the side plate (12) and the top plate (13) are arranged to form a lampshade. The assembly of the adhesive component (4), the light strip (2), the reflector (5) and the light guide plate (3) is inserted into the lampshade through the opening of the lampshade. The second adhesive component (42) is bonded to the side plate (12).

6. The backlight module according to claim 5, characterized in that, The assembly of the adhesive component (4), the light strip (2), the reflector (5) and the light guide plate (3) is interference-fitted with the inner cavity of the lampshade.

7. The backlight module according to claim 6, characterized in that, The adhesive assembly (4) further includes an elastic adhesive element (43), which is disposed between the adhesive backing surface (410) of the second horizontal adhesive portion (413) and the reflector (5).

8. The backlight module according to claim 7, characterized in that, The elastic adhesive (43) includes foam adhesive.

9. The backlight module according to any one of claims 2-8, characterized in that, The second adhesive component (42) includes double-sided adhesive.

10. A display device, characterized in that, Includes the backlight module as described in any one of claims 1-9.

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