Backlight module and display device

Abstract

The utility model provides a kind of backlight module and display device.The back mould group includes: backplate, backplate is bent from the bottom surface of display panel to the front surface of display panel, and the bent part forms lampshade area;Flexible circuit board, at least including circuit board bottom surface and circuit board side;In lampshade area inside, the circuit board side of flexible circuit board is bent upwards from the bottom surface of display panel;Flexible circuit board includes first light bar welding area and second light bar welding area, first light bar welding area is located at the position of circuit board bottom surface close to circuit board side, and second light bar welding area is located at circuit board side;First light bar, first light bar is welded in first light bar welding area;Second light bar, second light bar is welded in second light bar welding area;Second light bar is staggered with first light bar;Light guide plate, light guide plate is pasted with flexible circuit board through first castle glue, and light guide plate exports the light emitted by first light bar and second light bar to display panel.The scheme can improve the problem of insufficient brightness of backlight module light source.

Description

Technical Field

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

[0002] With the development of display technology, people have increasingly higher requirements for the display effect of display devices. For passive display devices with backlight modules, currently, the lamp source of vertical screen narrow bezel models is usually located on the short side of the display module. Because the lamp source is on the short side of the bezel, the space for lamp source placement is limited, which may result in insufficient brightness. Utility Model Content

[0003] This invention provides a backlight module and a display panel to improve the problem of insufficient brightness of the light source provided by the backlight module.

[0004] According to one aspect of the present invention, a backlight module is provided, comprising:

[0005] The back panel is bent from the bottom surface of the display panel to the front surface of the display panel, and the bent portion forms a lampshade area.

[0006] The flexible circuit board includes at least a bottom surface and a side surface; inside the lampshade area, the side surface of the flexible circuit board is bent upward from the bottom surface of the display panel; the flexible circuit board includes a first lamp strip welding area and a second lamp strip welding area, the first lamp strip welding area is located on the bottom surface of the circuit board near the side surface, and the second lamp strip welding area is located on the side surface of the circuit board.

[0007] The first light strip is welded to the welding area of ​​the first light strip;

[0008] The second light strip is welded to the welding area of ​​the second light strip; the second light strip is staggered with the first light strip.

[0009] A light guide plate is attached to the flexible circuit board via a first adhesive layer, and the light guide plate guides the light emitted by the first light strip and the second light strip to the display panel.

[0010] Optionally, the first light strip includes a plurality of first LED beads arranged at intervals;

[0011] The second light strip includes multiple second LED beads arranged at intervals;

[0012] The second LED is located between two adjacent first LEDs.

[0013] Optionally, the first castle adhesive is located between two adjacent first LED beads.

[0014] Optionally, the flexible circuit board is bent into an L-shape.

[0015] Optionally, the display module further includes a second adhesive, through which the first light strip is bonded to the side of the circuit board.

[0016] Optionally, the flexible circuit board is bent in a J-shape;

[0017] The flexible circuit board also includes a top surface of the circuit board, which is located on the top surface of the light guide plate.

[0018] Optionally, the display module further includes:

[0019] The light guide plate is bonded to the top surface of the circuit board via the third castle adhesive.

[0020] Optionally, along the long side of the light guide plate, the length of the first castle adhesive is less than the length of the lampshade area.

[0021] Optionally, it also includes a thermally conductive adhesive disposed between the side of the circuit board and the backplate.

[0022] According to another aspect of the present invention, a display device is provided, comprising a display panel and a backlight module as described in any of the first aspects, wherein the backlight module provides backlight to the display panel.

[0023] The technical solution provided by this utility model embodiment forms a lampshade area through a bent structure of the backplate, and utilizes the bending design of the flexible circuit board within the lampshade area to achieve a spatially staggered arrangement of the first and second light strips. This design allows the light emitted by the second light strip to pass through the dark area of ​​the first light strip as supplementary light to the light emitted by the first light strip. The light emitted by the first and second light strips simultaneously enters the light guide plate, thus allowing the light from the two light strips to complement each other, improving the problem of insufficient brightness caused by the traditional vertical screen narrow bezel light source placement on the short side. Furthermore, the bent flexible circuit board can fit snugly against the inner wall of the lampshade without gaps, providing ample space for the first backlight adhesive. Compared with related technologies, this extends the length of the first backlight adhesive, thus avoiding excessive separation of the light guide plate from the flexible circuit board due to excessive length, and preventing excessive light attenuation and light leakage caused by the first backlight adhesive entering the display area. In summary, this utility model embodiment improves the brightness of the backlight module.

[0024] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this utility model, nor is it intended to limit the scope of this utility model. Other features of this utility model will become readily apparent from the following description. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0026] Figure 1 This is a top view schematic diagram of a vertical screen narrow bezel backlight module in related technologies;

[0027] Figure 2 This is a three-dimensional structural diagram of a backlight module in related technologies;

[0028] Figure 3 for Figure 1 The diagram shows the structure of the backlight module.

[0029] Figure 4 This is a top-view schematic diagram of the optical path of a backlight module in a related technology.

[0030] Figure 5 A schematic diagram of the structure of a backlight module provided in an embodiment of this utility model;

[0031] Figure 6 for Figure 5 A schematic diagram of the structure without the back panel;

[0032] Figure 7 for Figure 6 A schematic diagram of the 2D unfolded structure;

[0033] Figure 8 A schematic diagram of the optical path of a first light strip and a second light strip provided for an embodiment of this utility model;

[0034] Figure 9 This is a schematic diagram of the structure of another backlight module provided in an embodiment of the present utility model;

[0035] Figure 10 This is a schematic diagram of the structure of another backlight module provided in an embodiment of the present utility model;

[0036] Figure 11 for Figure 10 A schematic diagram of the structure without the back panel;

[0037] Figure 12 for Figure 10 A schematic diagram of the 2D unfolded structure;

[0038] Figure 13 This is a schematic diagram of the structure of another backlight module provided in an embodiment of the present utility model;

[0039] Figure 14 A schematic diagram of the structure of a display device provided by this utility model;

[0040] Figure 15 A schematic diagram of another display device provided by this utility model. Detailed Implementation

[0041] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0042] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this utility model are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the utility model described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0043] As described in the background section, in related technologies, for vertically oriented narrow-bezel devices, the limited space for the light source, located on the shorter side of the bezel, can lead to insufficient brightness. A detailed analysis follows:

[0044] Figure 1 This is a top view schematic diagram of a vertical screen narrow bezel backlight module in related technologies. Figure 2 This is a schematic diagram of the three-dimensional structure of a backlight module in related technologies. See also... Figure 1 and Figure 2The backlight module's LED strip is typically positioned on the short side of the display device. The light guide plate 2 of the backlight module is bonded to the flexible circuit board 3 via adhesive 1. Multiple LEDs 4 are linearly arranged to form an LED strip and soldered onto the flexible circuit board 3. As shown by the red arrow, the LEDs 4 are usually spaced a certain distance from the backplate 5, which limits the length of the adhesive 1. When the adhesive 1 is too long, its edge may be too close to the display area AA, leading to light leakage on the light-incident side. When the adhesive 1 is too short, the connection between the light guide plate 2 and the flexible circuit board 3 may be weak, causing the light guide plate 2 to separate from the flexible circuit board 3 (e.g., ...). Figure 3 As shown in the figure, this can lead to problems such as excessive light decay and light leakage, affecting the brightness of the backlight module.

[0045] Furthermore, Figure 4 This is a top-view schematic diagram of the optical path of a backlight module in related technologies. For example... Figure 4 As shown, the maximum angle of the light emitted by LED 4 is usually less than 180°, such as Figure 4 As shown in the red triangle area, the light emitted by LED 4 has a dark area at a position greater than 180°, which causes light spots in the backlight module and affects the brightness of the backlight module.

[0046] To address the aforementioned issues, this utility model provides a backlight module that can be applied to passively emitting display devices, such as liquid crystal display devices, and is particularly suitable for vertical screen narrow bezel display devices, as well as horizontal screen narrow bezel display devices. Figure 5 This is a schematic diagram of the structure of a backlight module provided in an embodiment of the present invention. Figure 6 for Figure 5 A schematic diagram of the structure without the back panel. Figure 7 for Figure 6 A schematic diagram of the 2D unfolded structure. See also... Figures 5-7 The backlight module includes:

[0047] The back panel 10 is bent from the bottom surface of the display panel to the front surface of the display panel, and the bent part forms the lampshade area BB.

[0048] The flexible circuit board 100 includes at least a bottom surface 101 and a side surface 102. Inside the lampshade area BB, the side surface 102 of the flexible circuit board 100 is bent upward from the bottom surface of the display panel. The flexible circuit board 100 includes a first lamp strip welding area 110 and a second lamp strip welding area 120. The first lamp strip welding area 110 is located on the bottom surface 101 of the circuit board near the side surface 102 of the circuit board, and the second lamp strip welding area 120 is located on the side surface 102 of the circuit board.

[0049] The first light strip 200 is welded to the first light strip welding area 110;

[0050] The second light strip 300 is welded to the welding area 120 of the second light strip; the second light strip 300 and the first light strip 200 are staggered.

[0051] The light guide plate 400 is bonded to the flexible circuit board 100 by the first adhesive 510. The light guide plate 400 guides the light emitted by the first light strip 200 and the second light strip 300 to the display panel.

[0052] Specifically, the backplate 10 is a supporting component for the backlight module. The lampshade area BB formed by bending the backplate 10 is used to accommodate the light source of the backlight module (including the first lamp strip 200 and the second lamp strip 300). Optionally, the backplate 10 is provided with a reflective structure, which can confine the light emitted by the light source within the lampshade area BB, thereby improving light utilization and preventing light leakage. Furthermore, the light within the lampshade area BB is transmitted to the display area AA through the light guide plate 400. The light guide plate 400 has a light-diffusing effect, thereby providing uniform backlight for the display panel.

[0053] The flexible circuit board 100 carries the circuitry that drives the first light strip 200 and the second light strip 300 to emit light. The flexible circuit board 100 is made of a bendable flexible substrate, allowing it to be bent to a certain extent. The flexible circuit board 100 can be bent upwards in a direction parallel to the bottom surface of the back plate 10, thereby dividing the flexible circuit board 100 into a bottom surface 101 and a side surface 102 connected to the bottom surface 101.

[0054] In one embodiment, optionally, on the inner surface of the lampshade area BB, the bottom surface 101 of the flexible circuit board 100 is attached to the bottom surface area of ​​the back plate 10, while the side surface 102 of the circuit board is bent along the bending direction of the bottom surface of the back plate 10 to the side and is attached to the side bending portion of the back plate 10, that is, the sidewall of the lampshade area BB.

[0055] The first LED strip welding area 110 can be located on the bottom surface 101 of the circuit board near the bending line L of the side surface 102 of the circuit board; the second LED strip welding area 120 can be located on the side surface 102 of the circuit board. It can be understood that by bending the flexible circuit board 100 along the bending line L, the first LED strip welding area 110 and the second LED strip welding area 120 are located on two different planes.

[0056] The first LED strip 200 and the second LED strip 300 serve as the light source for the backlight module. The first LED strip 200 and the second LED strip 300 can be surface-mounted onto the first LED strip welding area 110 and the second LED strip welding area 120 of the flexible circuit board 100, respectively. The second LED strip 300 and the first LED strip 200 are arranged in a staggered manner in space, so that the light emitted by the second LED strip 300 supplements the light emitted by the first LED strip 200, and the light emitted by both the first LED strip 200 and the second LED strip 300 simultaneously enters the light guide plate 400. Specifically, Figure 8 This is a schematic diagram of the optical path of a first light strip and a second light strip provided for an embodiment of the present utility model. (See diagram below.) Figure 8 As shown, the light emitted by the second light strip 300 can pass through the dark area of ​​the first light strip 200 to provide supplemental light to the dark area. Therefore, the arrangement of the first light strip 200 and the second light strip 300 ensures that there is no dark area in the backlight module.

[0057] The light guide plate 400 is an optical transmission component of the backlight module, which is bonded and fixed to the flexible circuit board 100 by the first adhesive 510. The ends of the light guide plate 400 correspond to the first lamp strip 200 and the second lamp strip 300. The light emitted from the first lamp strip 200 and the second lamp strip 300 is incident on the light guide plate 400. The light guide plate 400 may have a scattering structure inside, which can convert the incident line light source into a uniform surface light source through the scattering effect of the scattering structure, and guide the light to the display area AA of the display panel, thereby providing uniform backlight for the display panel.

[0058] The technical solution provided by this utility model embodiment forms a lampshade area through a bent structure of the backplate, and utilizes the bending design of the flexible circuit board within the lampshade area to achieve a spatially staggered arrangement of the first and second light strips. This design allows the light emitted by the second light strip to pass through the dark area of ​​the first light strip as supplementary light to the light emitted by the first light strip. The light emitted by the first and second light strips simultaneously enters the light guide plate, thus allowing the light from the two light strips to complement each other, improving the problem of insufficient brightness caused by the traditional vertical screen narrow bezel light source placement on the short side. Furthermore, the bent flexible circuit board can fit snugly against the inner wall of the lampshade without gaps, providing ample space for the first backlight adhesive. Compared with related technologies, this extends the length of the first backlight adhesive, thus avoiding excessive separation of the light guide plate from the flexible circuit board due to excessive length, and preventing excessive light attenuation and light leakage caused by the first backlight adhesive entering the display area. In summary, this utility model embodiment improves the brightness of the backlight module.

[0059] Optionally, based on the above embodiments, see below. Figures 5-8The first light strip 200 includes a plurality of first LED beads 210 arranged at intervals; the second light strip 300 includes a plurality of second LED beads 310 arranged at intervals; the second LED beads 310 are located between two adjacent first LED beads 210.

[0060] Specifically, the first LED chip 210 and the second LED chip 310 can be light-emitting diode chips. Multiple spaced-apart first LED chips 210 are arranged in a straight line within the first LED strip welding area 110, linearly arranged at a preset interval; multiple spaced-apart LED chips 310 are arranged in a straight line within the second LED strip welding area 120, linearly arranged at a preset interval. The second LED chip 310 is positioned in the gap between adjacent first LED chips 210. The staggered arrangement of the first LED chips 210 and the second LED chips 310 allows them to complement each other spatially, filling the gaps between them, thereby improving the problem of insufficient brightness and enhancing the optical performance of the backlight module.

[0061] Optionally, based on the above embodiments, see below. Figures 5-8 The first castle glue 510 is located between two adjacent first lamp beads 210.

[0062] Specifically, the first adhesive 510 can be a double-sided tape of a certain thickness, used to bond and fix the light guide plate 400 to the flexible circuit board 100. Each first adhesive 510 is disposed in the area between two adjacent first LED beads 210. Optionally, the multiple first LED beads 210 are evenly arranged, and correspondingly, the multiple first adhesive 510 are also evenly arranged. This arrangement is beneficial for the light emitted by each first LED bead 210 to be emitted evenly.

[0063] In the above embodiments, the flexible circuit board 100 has various bending shapes, which will be described in detail below, but this is not intended to limit the present invention.

[0064] Alternatively, in one embodiment, see also: Figures 5-8 The flexible circuit board 100 is bent into an L-shape.

[0065] Specifically, the flexible circuit board 100 can start from the bottom surface of the display panel, extend along the bottom surface of the back plate 10, and then bend upwards by 90 degrees to form a bottom surface 101 and a side surface 102 of the circuit board that are perpendicular to each other. That is, the flexible circuit board 100 is bent into an L-shape. The L-shaped bend can make full use of the bending structure of the back plate 10, so that the first LED strip welding area 110 is located on the horizontal plane at the bottom of the back plate 10, and the second LED strip welding area 120 is located on the vertical plane on the side surface of the back plate 10. This provides a stable and space-efficient mounting platform for the first LED strip 200 and the second LED strip 300. This arrangement is suitable for display devices with thinner thickness and narrower bezels.

[0066] Optionally, based on the above embodiments, see below. Figures 5-8 The display module also includes a second adhesive 520, through which the first light strip 100 is bonded to the side of the circuit board.

[0067] Specifically, the second adhesive 520 can be applied to the side surface 102 of the flexible circuit board 100. Each second adhesive 520 is applied to the area between two adjacent second LED beads 310, thereby ensuring that the first LED strip 200 is tightly bonded to the side surface 102 of the circuit board via the second adhesive 520. This additional fixing method enhances the vertical stability of the first LED strip 200, preventing it from detaching or shifting during vibration or temperature cycling.

[0068] Optionally, Figure 9 This is a schematic diagram of another backlight module provided in an embodiment of the present utility model. Based on the above embodiments, see... Figure 9 The backlight module also includes thermally conductive adhesive 600, which is disposed between the side of the circuit board 102 and the back plate 10.

[0069] Specifically, thermally conductive adhesive 600 can be applied to the gap between the sidewall 102 of the flexible circuit board 100 and the lamp cover area BB sidewall of the backplate 10. The thermally conductive adhesive 600 provides an efficient thermal management channel for the backlight module. When the heat generated by the first LED strip 200 and the second LED strip 300 is conducted through the flexible circuit board 100 to the sidewall 102, the thermally conductive adhesive 600 can quickly transfer the heat to the backplate 10. The backplate 10, acting as a heat dissipation component, diffuses heat to a larger area and even the external environment, thereby effectively reducing the temperature of the LEDs and improving the reliability and lifespan of the backlight module.

[0070] Figure 10 This is a schematic diagram of another backlight module provided in an embodiment of the present utility model. Figure 11 for Figure 10 A schematic diagram of the structure without the back panel. Figure 12 for Figure 10 A schematic diagram of the 2D unfolded structure. Alternatively, in another embodiment, see... Figures 10-12 The flexible circuit board 100 is bent into a J-shape; the flexible circuit board 100 also includes a top surface 103, which is located on the top surface of the light guide plate 400.

[0071] Specifically, the J-shaped bend can be understood as follows: based on the L-shaped bend, the top of the flexible circuit board 100 is further bent along the bending line M towards the front of the display panel, thereby forming a circuit board top surface 103. The circuit board top surface 103 is located above the top surface of the light guide plate 400. The J-shaped design further expands the wiring space of the flexible circuit board 100 without occupying the width of the display device bezel. Furthermore, the presence of the circuit board top surface 103 increases the thickness of the backlight module; therefore, this embodiment can be applied to thicker display devices.

[0072] Alternatively, based on the above embodiments, see... Figures 10-12 The display module also includes a third adhesive 530, through which the light guide plate 400 is bonded to the top surface 102 of the circuit board.

[0073] Specifically, in this optional solution, the display module further employs a third adhesive 530 to fix the light guide plate 400 and the flexible circuit board 100. Optionally, similar to the arrangement of the first adhesive 510, the third adhesive 530 can be correspondingly disposed in the area between two adjacent first LED beads 210, thereby making the first adhesive 510 and the third adhesive 530 correspond to each other in the vertical direction. In other embodiments, the third adhesive 530 can also be correspondingly disposed in the area between two adjacent second LED beads 310. The third adhesive 530 can be used to attach the top surface of the light guide plate 400 to the top surface 103 of the flexible circuit board 100. Through the third adhesive 530, the light guide plate 400 obtains an additional fixing point at the top, effectively suppressing the warping of the light guide plate 400 in the vertical direction, further improving the stability of the connection between the flexible circuit board 100 and the light guide plate 400, and effectively avoiding the separation of the light guide plate 400 and the flexible circuit board 100 due to thermal expansion and contraction of the light guide plate 400.

[0074] Alternatively, based on the above embodiments, see... Figures 10-12 Along the long side of the light guide plate 400, the length of the first castle adhesive 510 is less than the length of the lampshade area BB.

[0075] Specifically, for a vertically oriented display device with a narrow bezel, the light source of the backlight module is located on the short side of the light guide plate 400, along the long side of the light guide plate 400, that is... Figure 11 As indicated by the middle arrow, the display area AA and the lampshade area BB are arranged. Along the long side of the light guide plate 400, the length of the first adhesive 510 is less than the length of the lampshade area BB to prevent the first adhesive 510 from being too long and extending into the display area AA, which would cause problems such as excessive light attenuation, light leakage, and bright spots.

[0076] Optionally, Figure 13This is a schematic diagram of another backlight module provided in an embodiment of the present utility model. Based on the above embodiments, see... Figure 13 The backlight module also includes thermally conductive adhesive 600, which is disposed between the side of the circuit board 102 and the back plate 10.

[0077] Specifically, thermally conductive adhesive 600 can be applied to the gap between the sidewall 102 of the flexible circuit board 100 and the lamp cover area BB sidewall of the backplate 10. The thermally conductive adhesive 600 provides an efficient thermal management channel for the backlight module. When the heat generated by the first LED strip 200 and the second LED strip 300 is conducted through the flexible circuit board 100 to the sidewall 102, the thermally conductive adhesive 600 can quickly transfer the heat to the backplate 10. The backplate 10, acting as a heat dissipation component, diffuses heat to a larger area and even the external environment, thereby effectively reducing the temperature of the LEDs and improving the reliability and lifespan of the backlight module.

[0078] Figure 14 This is a schematic diagram of the structure of a display device provided by this utility model. Figure 15 This is a schematic diagram of another display device provided by this utility model. The display device can be a mobile phone, computer monitor, television, tablet computer, etc. Based on the above embodiments, see... Figure 14 and Figure 15 The display device 20 includes a display panel 21 and a backlight module provided in any of the above embodiments, wherein the backlight module provides backlight to the display panel 21. The display device provided by this utility model has the same beneficial effects as the backlight module provided in any of the above embodiments, and will not be described further here.

[0079] The display panel 21 may be, for example, a liquid crystal display panel, which includes an array layer, a liquid crystal cell, and a color filter substrate.

[0080] It should be understood that the various forms of the process shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this utility model can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this utility model can be achieved, and this is not limited herein.

[0081] The specific embodiments described above do not constitute a limitation on the scope of protection of this utility model. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A backlight module, characterized in that, include: The back panel is bent from the bottom surface of the display panel to the front surface of the display panel, and the bent portion forms a lampshade area. The flexible circuit board includes at least a bottom surface and a side surface; inside the lampshade area, the side surface of the flexible circuit board is bent upward along the bottom surface of the display panel; the flexible circuit board includes a first lamp strip welding area and a second lamp strip welding area, the first lamp strip welding area is located on the bottom surface of the circuit board near the side surface, and the second lamp strip welding area is located on the side surface of the circuit board. The first light strip is welded to the welding area of ​​the first light strip; The second light strip is welded to the welding area of ​​the second light strip; the second light strip is staggered with the first light strip. A light guide plate is attached to the flexible circuit board via a first adhesive layer, and the light guide plate guides the light emitted by the first light strip and the second light strip to the display panel.

2. The backlight module according to claim 1, characterized in that, The first light strip includes a plurality of first LED beads arranged at intervals; The second light strip includes multiple second LED beads arranged at intervals; The second LED is located between two adjacent first LEDs.

3. The backlight module according to claim 2, characterized in that, The first castle adhesive is located between two adjacent first LED beads.

4. The backlight module according to claim 1, characterized in that, The flexible circuit board is bent into an L-shape.

5. The backlight module according to claim 4, characterized in that, It also includes a second castle adhesive, through which the first light strip is bonded to the side of the circuit board.

6. The backlight module according to claim 1, characterized in that, The flexible circuit board is bent into a J-shape; The flexible circuit board also includes a top surface of the circuit board, which is located on the top surface of the light guide plate.

7. The backlight module according to claim 6, characterized in that, Also includes: The light guide plate is bonded to the top surface of the circuit board via the third castle adhesive.

8. The backlight module according to claim 1, characterized in that, Along the long side of the light guide plate, the length of the first castle adhesive is less than the length of the lampshade area.

9. The backlight module according to any one of claims 1-8, characterized in that, It also includes thermally conductive adhesive, which is disposed between the side of the circuit board and the backplate.

10. A display device, characterized in that, It includes a display panel and a backlight module as described in any one of claims 1-9, wherein the backlight module provides backlight to the display panel.

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