Backlight module, display screen and display device

Abstract

The application discloses a backlight module, a display screen and a display device, and belongs to the technical field of display. The backlight module comprises a frame body, a light source component, a main reinforcing piece and at least two supports. Since the binding area of the liquid crystal display panel and the side-in type light source in the backlight module are located on the same side of the display screen, and the orthographic projection of the main reinforcing piece on the bottom plate and the orthographic projection of the light source on the bottom plate are overlapped, the supporting strength of the backlight module can be enhanced through the main reinforcing piece, the probability of deformation of the side of the backlight module where the light source is arranged is reduced, and then the deformed backlight module can be effectively prevented from colliding with the binding area of the liquid crystal display panel, so that the protective cover plate on the side of the liquid crystal display panel away from the backlight module is not prone to breakage due to the deformation of the backlight module, the light leakage phenomenon caused by the breakage of the protective cover plate can be avoided, and then the display effect of the display screen assembled with the backlight module is better.

Description

Technical Field

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

[0002] Liquid crystal displays (LCDs) are characterized by their small size, low power consumption, and lack of radiation, and therefore dominate the current display market.

[0003] However, if the back of the LCD device is impacted, the glass cover on the front of the device may crack, causing light leakage. Utility Model Content

[0004] This application provides a backlight module, a display screen, and a display device. It can solve the light leakage problem of existing display screens. The technical solution is as follows:

[0005] On the one hand, a backlight module is provided, including: a frame, a light source component, a main reinforcing member, and at least two brackets;

[0006] The frame includes: a base plate, and side plates connected to the outer edge of the base plate;

[0007] The light source component is located within the area enclosed by the side plate, and the light source component includes: a side-lit light source, a light guide plate, and an optical film; the light emitting surface of the light source faces the side of the light guide plate, and the optical film is located on the side of the light guide plate opposite to the base plate;

[0008] The at least two brackets are located outside the area enclosed by the side plates, and the at least two brackets are connected to the frame. The brackets are used to connect to the drive circuit board.

[0009] The main reinforcing member is connected to the side of the base plate opposite to the side plate, and the orthographic projection of the main reinforcing member on the base plate overlaps with the orthographic projection of the light source on the base plate.

[0010] Optionally, the at least two supports and the base plate are integrally formed; the base plate has at least two cut openings, each of which corresponds to one of the at least two supports, and the supports are fixedly connected to the base plate at the corresponding cut opening.

[0011] Optionally, the at least two brackets and the main reinforcing member are integrally formed, and the at least two brackets are connected to the frame through the main reinforcing member.

[0012] Optionally, the extension direction of the light source is parallel to the first direction, and the width direction of the light source is parallel to the second direction; in the first direction, the length of the main reinforcing member is less than or equal to the length of the light source; in the second direction, the width of the main reinforcing member is greater than the width of the light source.

[0013] Optionally, the extension direction of the light source is parallel to the first direction, and the width direction of the light source is parallel to the second direction; the backlight module further includes: a first auxiliary reinforcement and / or two second auxiliary reinforcements;

[0014] Wherein, the first auxiliary reinforcing member is connected to the side of the base plate away from the side plate, and the first auxiliary reinforcing member and the main reinforcing member are disposed opposite to each other in the second direction;

[0015] The two second auxiliary reinforcing members are connected to the side of the base plate away from the side plate, and the two second auxiliary reinforcing members are arranged opposite to each other in the first direction.

[0016] Optionally, the backlight module further includes: two adhesive strips disposed opposite to each other in the first direction, the adhesive strips being bonded to the side of the base plate opposite to the side plate; the side of the adhesive strips opposite to the base plate being used to bond to the rear shell;

[0017] In the case where the backlight module includes the two second auxiliary reinforcing members, the two adhesive strips are distributed between the two second auxiliary reinforcing members in the first direction.

[0018] Optionally, both the first auxiliary reinforcement and the main reinforcement have at least two first brackets, the first brackets protruding from the outer edge of the base plate, and the first brackets are used to connect to the rear shell;

[0019] And / or, each of the two second auxiliary reinforcements has at least two second brackets, the second brackets protruding from the outer edge of the base plate, the second brackets being used for connection to the rear shell.

[0020] Optionally, the bracket includes: a flat portion and a curved portion connected together; the side of the curved portion opposite to the flat portion is connected to the frame; in a direction perpendicular to the backlight module, the flat portion is located between the side of the side plate near the bottom plate and the side opposite to the bottom plate;

[0021] In the direction perpendicular to the backlight module, the side of the planar portion near the light-emitting side of the backlight module is a support surface, which is used to support the driving circuit board.

[0022] On the other hand, a display screen is provided, comprising: a backlight module, a liquid crystal display panel, and a driving circuit board; the backlight module is any of the backlight modules described above; the liquid crystal display panel is located on the light-emitting side of the backlight module, and the driving circuit board is connected to at least two brackets in the backlight module and electrically connected to the liquid crystal display panel.

[0023] In another aspect, a display device is provided, comprising: the display screen described above, and a rear cover connected to the display screen.

[0024] The beneficial effects of the technical solutions provided in this application include at least the following:

[0025] The backlight module provided in this application embodiment has the following advantages: the bonding area of ​​the liquid crystal display panel and the side-lit light source in the backlight module are both located on the same side of the display screen, and the orthographic projection of the main reinforcing member on the base plate overlaps with the orthographic projection of the light source on the base plate. Therefore, the main reinforcing member can enhance the supporting strength of the backlight module, reduce the probability of deformation on the side of the backlight module where the light source is located, and effectively prevent the deformed backlight module from impacting the bonding area of ​​the liquid crystal display panel. This makes the protective cover plate on the side of the liquid crystal display panel away from the backlight module less prone to cracking due to the deformation of the backlight module, thereby avoiding light leakage caused by the cracking of the protective cover plate. Consequently, the display screen equipped with this backlight module has a better display effect. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a top view of a backlight module provided in an embodiment of this application;

[0028] Figure 2 yes Figure 1 The diagram shows the film structure of the backlight module at point A-A'.

[0029] Figure 3 This is a schematic diagram of the film structure of a backlight module provided in an embodiment of this application;

[0030] Figure 4 yes Figure 3 The top view of the frame in the backlight module is shown;

[0031] Figure 5 This is a top view of another backlight module provided in the embodiments of this application;

[0032] Figure 6 yes Figure 5 The diagram shows the film structure of the backlight module at B-B'.

[0033] Figure 7 This is a top view of another backlight module provided in the embodiments of this application;

[0034] Figure 8 This is a top view of another backlight module provided in the embodiments of this application;

[0035] Figure 9 This is a top view of a backlight module provided in another embodiment of this application;

[0036] Figure 10 This is a schematic diagram of the film layer structure of another backlight module provided in the embodiments of this application;

[0037] Figure 11 This is a schematic diagram of the film structure of a display screen provided in an embodiment of this application. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0039] Please refer to Figure 1 and Figure 2 , Figure 1 This is a top view of a backlight module provided in an embodiment of this application. Figure 2 yes Figure 1 The diagram shows the film structure of the backlight module at point A-A'. The backlight module 000 may include: a frame 100, a light source component 200, a main reinforcing member 300, and at least two supports 400.

[0040] The frame 100 in the backlight module 000 may include: a base plate 110 and a side plate 120 connected to the outer edge of the base plate 110.

[0041] The light source component 200 in the backlight module 000 is located within the area enclosed by the side plate 120, and the light source component 200 may include: a side-lit light source 210, a light guide plate 220, and an optical film 230. The light-emitting surface of the light source 210 faces the side of the light guide plate 220, and the optical film 230 is located on the side of the light guide plate 220 facing away from the base plate 110. Here, light emitted from the light-emitting surface of the light source 210 can enter the interior of the light guide plate 220 from its side, and the light entering the interior of the light guide plate 220 can be guided by the light guide plate 220 to its front surface before exiting. The front surface of the light guide plate 220 is the light-emitting surface of the backlight module 000. Subsequently, the light emitted from the backlight module 000 can be directed onto the liquid crystal display panel, enabling the liquid crystal display panel to display images normally. Furthermore, the optical film 230 may include a first diffuser sheet, a first prism sheet, a second prism sheet, and a second diffuser sheet stacked along a direction perpendicular to and away from the light guide plate 220. These optical films 230 can adjust the light emitted from the light guide plate 220, making the light incident on the liquid crystal display panel more uniform.

[0042] It should be noted that the light source component 200 may further include a reflective sheet 240. The reflective sheet 240 is located between the light guide plate 220 and the base plate 110. The base plate 110 can effectively support the reflective sheet 240, the light guide plate 220, and the optical film 230. Here, the reflective sheet 240 can reflect light emitted from the side of the light guide plate 220 facing the base plate 110 back to the light guide plate 220, so that the light reflected back to the light guide plate 220 can be emitted from the side of the light guide plate 220 facing the optical film 230, thereby improving the light extraction efficiency of the backlight module 000.

[0043] At least two brackets 400 in the backlight module 000 are located outside the area enclosed by the side panel 120, and both brackets 400 are connected to the frame 100. The brackets 400 are used to connect to the driving circuit board and can support the driving circuit board. Here, the driving circuit board is electrically connected to the bonding area of ​​the liquid crystal display panel and can be electrically connected to the light source 210.

[0044] The main reinforcing member 300 in the backlight module 000 is connected to the side of the base plate 110 away from the side plate 120, and the orthographic projection of the main reinforcing member 300 on the base plate 110 overlaps with the orthographic projection of the light source 210 on the base plate 110.

[0045] It should be noted that the bonding area of ​​the liquid crystal display panel refers to the area in the liquid crystal display panel where the array substrate protrudes from the color filter substrate. Therefore, the bonding area of ​​the liquid crystal display panel is a single-layer glass area. The protective cover plate set on the side of the liquid crystal display panel away from the backlight module 000 has low strength near this bonding area and is very easy to break after the backlight module 000 is subjected to impact.

[0046] In this embodiment, since the bonding area of ​​the liquid crystal display panel and the side-lit light source 210 in the backlight module 000 are both located on the same side of the display screen, and the orthographic projection of the main reinforcing member 300 on the base plate 110 overlaps with the orthographic projection of the light source 210 on the base plate 110, the main reinforcing member 300 can enhance the support strength of the backlight module 000, reduce the probability of deformation on the side of the backlight module 000 where the light source 210 is located, and effectively prevent the deformed backlight module 000 from impacting the bonding area of ​​the liquid crystal display panel. This makes the protective cover plate on the side of the liquid crystal display panel away from the backlight module 000 less likely to crack due to the deformation of the backlight module 000, thereby avoiding light leakage caused by the cracking of the protective cover plate, and thus making the display screen with the backlight module 000 have a better display effect.

[0047] In summary, the backlight module provided in this application embodiment has the following advantages: the bonding area of ​​the liquid crystal display panel and the side-lit light source in the backlight module are both located on the same side of the display screen, and the orthographic projection of the main reinforcing member on the base plate overlaps with the orthographic projection of the light source on the base plate. Therefore, the main reinforcing member can enhance the supporting strength of the backlight module, reduce the probability of deformation on the side of the backlight module where the light source is located, and effectively prevent the deformed backlight module from impacting the bonding area of ​​the liquid crystal display panel. This makes the protective cover plate on the side of the liquid crystal display panel away from the backlight module less prone to cracking due to the deformation of the backlight module, thereby avoiding light leakage caused by the cracking of the protective cover plate. Consequently, the display screen equipped with this backlight module has a better display effect.

[0048] In this embodiment, the at least two brackets 400 in the backlight module 000 have multiple possible design methods. This embodiment illustrates the following two possible design methods as examples:

[0049] For the first possible design approach, please refer to... Figure 3 , Figure 3 This is a schematic diagram of the film layer structure of a backlight module provided in an embodiment of this application. Figure 4 yes Figure 3 The diagram shows a top view of the frame in the backlight module. At least two brackets 400 in the backlight module 000 are integrally formed with the base plate 110. The base plate 110 has at least two cutouts 111, each corresponding to one of the at least two brackets 400, with the brackets 400 fixedly connected to the base plate 110 at their respective cutouts 111.

[0050] In this situation, the support strength of the portion of the base plate 110 with the cut opening 111 is relatively poor. Since the bonding area of ​​the liquid crystal display panel and the portion of the base plate 110 with the cut opening 111 are both located on the same side of the display screen, and the orthographic projection of the main reinforcing member 300 on the base plate 110 covers the area where the cut opening 111 is located, the main reinforcing member 300 can increase the support strength of the portion of the base plate 110 with the cut opening 111, reduce the probability of deformation of the portion of the base plate 110 with the cut opening 111 in the backlight module 000, and effectively prevent the deformed backlight module 000 from impacting the bonding area covering the liquid crystal display panel. This makes the protective cover plate on the side of the liquid crystal display panel away from the backlight module 000 less likely to crack due to the deformation of the backlight module 000, thereby avoiding light leakage caused by the cracking of the protective cover plate, and thus making the display screen assembled with the backlight module 000 have a better display effect.

[0051] For the second possible design approach, please refer to... Figure 5 and Figure 6 , Figure 5 This is a top view of another backlight module provided in the embodiments of this application. Figure 6 yes Figure 5 The diagram shows the film structure of the backlight module at point B-B'. At least two supports 400 and the main reinforcing member 300 are integrally formed, and at least two supports 400 are connected to the frame 100 through the main reinforcing member 300.

[0052] In this configuration, the base plate 110 does not require a cutting opening 111, resulting in better support strength and impact resistance. When the back of the backlight module 000 is subjected to impact, the strong base plate 110 and main reinforcing member 300 enhance its support strength, reducing the probability of deformation on the side of the backlight module 000 where the light source 210 is located. This effectively prevents the deformed backlight module 000 from impacting the bonding area of ​​the LCD panel, making the protective cover on the side of the LCD panel away from the backlight module 000 less prone to cracking due to deformation of the backlight module 000. This avoids light leakage caused by a cracked protective cover, resulting in a better display effect for the screen equipped with the backlight module 000.

[0053] It should be noted that, as Figure 3 and Figure 6 As shown, the bracket 400 in the backlight module 000 may include a flat portion 400a and a curved portion 400b connected to each other. The side of the curved portion 400b facing away from the flat portion 400a is connected to the frame 100; in a direction perpendicular to the backlight module 000, the flat portion 400a is located between the side of the side plate 120 near the bottom plate 110 and the side facing away from the bottom plate 110.

[0054] In the direction perpendicular to the backlight module 000, the side of the planar portion 400a near the light-emitting side of the backlight module 000 is a support surface S, which is used to support the drive circuit board.

[0055] In this case, the flat portion 400a in the bracket 400 has at least one support connection hole 410. Here, the drive circuit board can be fastened to the bracket 400 by means of screws passing through the support connection hole 410 and being threadedly connected to the drive circuit board, thereby achieving a stable connection between the drive circuit board and the bracket 400 and improving the connection strength between the drive circuit board and the bracket 400.

[0056] Furthermore, since the planar portion 400a is located between the side of the side plate 120 near the bottom plate 110 and the side away from the bottom plate 110, there is a gap between the planar portion 400a and the bottom plate 110. Therefore, when a screw is used to pass through the support connection hole 410 and threadedly connected to the drive circuit board, the screw head can be located in the space formed by the gap between the planar portion 400a and the bottom plate 110. This can effectively prevent the screw head from protruding from the side of the bottom plate 110 away from the side plate 120, and avoid assembly interference during the assembly of the display screen including the backlight module 000 and the back cover.

[0057] It should also be noted that in other embodiments, the bracket 400 can be manufactured by sheet metal, welding, or other methods and connected to the frame 100. This application does not limit this aspect.

[0058] In this embodiment, the extension direction of the light source 210 in the light source component 200 is parallel to the first direction x, and the width direction of the light source 210 is parallel to the second direction y; in the first direction x, the length of the main reinforcing member 300 is less than or equal to the length of the light source 210; in the second direction y, the width of the main reinforcing member 300 is greater than the width of the light source 210.

[0059] In this way, the overlapping area of ​​the orthographic projection of the main reinforcing member 300 on the base plate 110 and the orthographic projection of the light source 210 on the base plate 110 is relatively large. This can effectively enhance the support strength of the side of the backlight module 000 where the light source 210 is located, making the backlight module 000 more impact-resistant. After the back of the backlight module 000 is subjected to impact, the main reinforcing member 300 can enhance the support strength of the backlight module 000, reduce the probability of deformation on the side of the backlight module 000 where the light source 210 is located, and thus effectively prevent the deformed backlight module 000 from hitting the bonding area of ​​the liquid crystal display panel. This makes the protective cover plate on the side of the liquid crystal display panel away from the backlight module 000 less likely to crack due to the deformation of the backlight module 000, thereby avoiding light leakage caused by the cracking of the protective cover plate. As a result, the display screen assembled with this backlight module 000 has a better display effect.

[0060] In the embodiments of this application, such as Figure 5 As shown, the backlight module 000 may further include: a first auxiliary reinforcement 500 and / or two second auxiliary reinforcements 600.

[0061] The first auxiliary reinforcing member 500 is connected to the side of the base plate 110 away from the side plate 120, and the first auxiliary reinforcing member 500 and the main reinforcing member 300 are arranged opposite to each other in the second direction y.

[0062] Two second auxiliary reinforcement members 600 are connected to the side of the base plate 110 away from the side plate 120, and the two second auxiliary reinforcement members 500 are arranged opposite each other in the first direction x.

[0063] Thus, when the backlight module 000 is used in an ultra-thin display device, the base plate 110 is thinner and has lower strength. Reinforcing members are distributed along the edges of the backlight module 000 to further enhance its overall strength. When the back of the backlight module 000 is subjected to impact, the main reinforcing member 300, the first auxiliary reinforcing member 500, and the two second auxiliary reinforcing members 600 can enhance the supporting strength of the backlight module 000 and reduce the probability of deformation.

[0064] Furthermore, the main reinforcing member 300, the first auxiliary reinforcing member 500, and the two second auxiliary reinforcing members 600 can be made of stainless steel, which can effectively enhance the strength of the backlight module 000. This allows the main reinforcing member 300, the first auxiliary reinforcing member 500, and the two second auxiliary reinforcing members 600 to increase the impact resistance of the backlight module 000 after it is subjected to impact, reducing the probability of deformation. For example, the main reinforcing member 300, the first auxiliary reinforcing member 500, and the two second auxiliary reinforcing members 600 can be made of high-strength SUS304 or SUS301 stainless steel.

[0065] It should be noted that the main reinforcing member 300, the first auxiliary reinforcing member 500, and the two second auxiliary reinforcing members 600 can be bonded to the base plate 110 with conductive adhesive, allowing the main reinforcing member 300, the first auxiliary reinforcing member 500, and the two second auxiliary reinforcing members 600 to be grounded through the base plate 110. After the backlight module 000 and the liquid crystal display panel are assembled, the electrostatic charge in the liquid crystal display panel can be conducted to the base plate 100 and released through the bracket 400 and the main reinforcing member 300. This effectively prevents the electrostatic field generated by the electrostatic charge accumulated in the color filter substrate from interfering with the electric field of the liquid crystal molecules inside the liquid crystal display panel, enabling the liquid crystal display panel to display images normally.

[0066] In this application embodiment, there are several possible scenarios where the display screen, including the backlight module 000, is connected to the rear shell. This application embodiment illustrates these scenarios using the following two possible scenarios as examples:

[0067] In the first possible scenario, please refer to... Figure 7 , Figure 7 This is a top view of another backlight module provided in the embodiments of this application. The backlight module 000 may further include: two adhesive strips 700 disposed opposite each other in a first direction x, the adhesive strips 700 being bonded to the side of the base plate 110 away from the side plate 120; the side of the adhesive strips 700 away from the base plate 110 is used to bond to the rear shell.

[0068] In the case where the backlight module 000 includes two second auxiliary reinforcements 600, two adhesive strips 700 are distributed between the two second auxiliary reinforcements 600 in the first direction x.

[0069] It should be noted that, in order to ensure that the side of the adhesive strip 700 facing away from the base plate 110 can be bonded to the rear shell, the thicknesses of the main reinforcing member 300, the first auxiliary reinforcing member 500, and the two second auxiliary reinforcing members 600 are all less than or equal to the thickness of the adhesive strip 700, so that the adhesive strip 700 can be bonded to the rear shell. For example, the thickness of the main reinforcing member 300 ranges from 0.3 mm to 0.5 mm. The thickness of the first auxiliary reinforcing member 500 ranges from 0.3 mm to 0.5 mm. The thickness of the second auxiliary reinforcing member 600 ranges from 0.3 mm to 0.5 mm.

[0070] In the second possible scenario, please refer to point 5. Figure 8 and Figure 9 , Figure 8 This is a top view of another backlight module provided in the embodiments of this application. Figure 9 This is a top view of a backlight module provided in another embodiment of this application. Both the first auxiliary reinforcement 500 and the main reinforcement 300 have at least two first brackets 810. The first brackets 810 protrude from the outer edge of the base plate 110 and are used to connect with the rear shell.

[0071] And / or, each of the two second auxiliary reinforcements 600 has at least two second brackets 820, the second brackets 820 protruding from the outer edge of the base plate 110, the second brackets 820 being used for connection with the rear shell.

[0072] In this case, please refer to Figure 10 , Figure 10 This is a schematic diagram of the film layer structure of another backlight module provided in an embodiment of this application. It should be noted that... Figure 10 It can be Figure 5The diagram shows the film structure of the backlight module at C-C'. The first bracket 810 and the second bracket 820 may include: a bending piece 801 and a fastening piece 802.

[0073] In the first bracket 810 of the first auxiliary reinforcement 500, the surface of the turning piece 801 intersects with the surface of the first auxiliary reinforcement 500 and the surface of the fastening piece 802. One side of the turning piece 801 is fixedly connected to the side of the first auxiliary reinforcement 500 facing the outer edge of the backlight module 000, and the other side of the turning piece 801 is fixedly connected to one side of the fastening piece 802.

[0074] Similarly, in the first bracket 810 of the main reinforcement 300, the surface of the turning piece 801 intersects with the surface of the first auxiliary reinforcement 500 and the surface of the fastening piece 802. One side of the turning piece 801 is fixedly connected to the side of the main reinforcement 300 facing the outer edge of the backlight module 000, and the other side of the turning piece 801 is fixedly connected to one side of the fastening piece 802. In the second bracket 880 of the second auxiliary reinforcement 600, the surface of the turning piece 801 intersects with the surface of the second auxiliary reinforcement 600 and the surface of the fastening piece 802. One side of the turning piece 801 is fixedly connected to the side of the second auxiliary reinforcement 600 facing the outer edge of the backlight module 000, and the other side of the turning piece 801 is fixedly connected to one side of the fastening piece 802.

[0075] It should be noted that the fastening piece 802 in the first bracket 810 and the second bracket 820 has at least one connecting hole K. Here, the first bracket 810 and the second bracket 820 can be fastened to the rear shell by passing a screw through the connecting hole K and threading it onto the rear shell, thereby achieving a stable connection between the display module 000 and the rear shell and improving the connection strength between the backlight module 000 and the rear shell.

[0076] The bending piece 801 bends towards the light-emitting side of the backlight module 000, and in a direction perpendicular to the backlight module 000, the fastening piece 802 is distributed between the back side and the front side of the backlight module 000. This creates a gap between the back side of the backlight module 000 and the fastening piece 802. When a screw is threaded through the connecting hole K to the rear housing, at least a portion of the thread on the rear housing can extend into the space formed by the gap between the back side of the backlight module 000 and the fastening piece 802, thus reducing the distance between the rear housing and the back side of the backlight module 000 and effectively decreasing the thickness of the display device on which the backlight module 000 is assembled.

[0077] In summary, the backlight module provided in this application embodiment has the following advantages: the bonding area of ​​the liquid crystal display panel and the side-lit light source in the backlight module are both located on the same side of the display screen, and the orthographic projection of the main reinforcing member on the base plate overlaps with the orthographic projection of the light source on the base plate. Therefore, the main reinforcing member can enhance the supporting strength of the backlight module, reduce the probability of deformation on the side of the backlight module where the light source is located, and effectively prevent the deformed backlight module from impacting the bonding area of ​​the liquid crystal display panel. This makes the protective cover plate on the side of the liquid crystal display panel away from the backlight module less prone to cracking due to the deformation of the backlight module, thereby avoiding light leakage caused by the cracking of the protective cover plate. Consequently, the display screen equipped with this backlight module has a better display effect.

[0078] This application also provides a display screen, please refer to... Figure 11 , Figure 11 This is a schematic diagram of the film layer structure of a display screen according to an embodiment of this application. The display screen 00 may include: a backlight module 000, a liquid crystal display panel 001, and a driving circuit board 002. The backlight module is the backlight module 000 in the above embodiment. The liquid crystal display panel 001 is located on the light-emitting side of the backlight module 000, and the driving circuit board 003 is connected to at least two brackets 400 in the backlight module 000 and is electrically connected to the liquid crystal display panel 001.

[0079] It should be noted that the liquid crystal display panel 001 in the display screen 00 may further include: an array substrate 101 and a color filter substrate 102 disposed opposite to each other, and a first polarizer 103 located on the side of the array substrate 101 facing away from the color filter substrate 102 and a second polarizer 104 located on the side of the color filter substrate 102 facing away from the array substrate 101. It should be noted that the polarization direction of the first polarizer 103 may be perpendicular to the polarization direction of the second polarizer 104.

[0080] The liquid crystal display panel 001 may further include a protective cover plate 105, which is located on the side of the second polarizer 104 opposite to the color filter substrate 102. When the light-emitting side of the liquid crystal display panel 001 is subjected to an impact force, the protective cover plate 105 can protect the liquid crystal display panel 001.

[0081] It should also be noted that since the bonding area of ​​the liquid crystal display panel and the side-lit light source 210 in the backlight module 000 are both located on the same side of the display screen, and the orthographic projection of the main reinforcing member 300 on the base plate 110 overlaps with the orthographic projection of the light source 210 on the base plate 110, the main reinforcing member 300 can enhance the support strength of the backlight module 000, reduce the probability of deformation on the side of the backlight module 000 where the light source 210 is located, and effectively prevent the deformed backlight module 000 from impacting the bonding area of ​​the liquid crystal display panel. This makes the protective cover plate on the side of the liquid crystal display panel away from the backlight module 000 less likely to crack due to the deformation of the backlight module 000, thereby avoiding light leakage caused by the cracking of the protective cover plate, and thus making the display screen equipped with the backlight module 000 have a better display effect. Here, the width d of the main reinforcing member 300 can be 2 to 3 times the width D of the bonding area of ​​the liquid crystal display panel, further reducing the probability of deformation on the side where the backlight module 000 sets the light source 210.

[0082] Furthermore, in other embodiments, the driving circuit board 003 can be located on the back side of the backlight module 000. The driving circuit board 003 is electrically connected to the liquid crystal display panel 001 via a flip-chip film bent to the back side of the backlight module 000. In this case, the main reinforcing member 300 is located between the base plate 110 and the flip-chip film bent to the back side of the backlight module 000. Furthermore, the bracket 400 is no longer needed in the backlight module 000, which can effectively reduce the bezel width of the display screen. This application does not limit this aspect.

[0083] This application also provides a display device, characterized in that it includes: Figure 11 The image shows a display screen and a rear casing connected to the display screen. This display device can be any product or component with a display function, such as electronic paper, mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0084] It should be noted that the dimensions of layers and regions may be exaggerated in the accompanying drawings for clarity. Furthermore, it is understood that when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be intermediate layers. Additionally, it is understood that when an element or layer is referred to as being "below" another element or layer, it can be directly below the other element, or there may be more than one intermediate layer or element. Furthermore, it is also understood that when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or there may be more than one intermediate layer or element. Similar reference numerals throughout indicate similar elements.

[0085] In this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The term "multiple" refers to two or more unless otherwise expressly defined.

[0086] The above description is merely an optional embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A backlight module, characterized in that, include: The frame, light source components, main reinforcing members, and at least two brackets; The frame includes: a base plate, and side plates connected to the outer edge of the base plate; The light source component is located within the area enclosed by the side plate, and the light source component includes: a side-lit light source, a light guide plate, and an optical film; the light emitting surface of the light source faces the side of the light guide plate, and the optical film is located on the side of the light guide plate opposite to the base plate; The at least two brackets are located outside the area enclosed by the side plates, and the at least two brackets are connected to the frame. The brackets are used to connect to the drive circuit board. The main reinforcing member is connected to the side of the base plate opposite to the side plate, and the orthographic projection of the main reinforcing member on the base plate overlaps with the orthographic projection of the light source on the base plate.

2. The backlight module of claim 1, wherein, The at least two brackets and the base plate are integrally formed; the base plate has at least two cut openings, and the at least two cut openings correspond one-to-one with the at least two brackets, and the brackets are fixedly connected to the base plate at the corresponding cut openings.

3. The backlight module of claim 1, wherein, The at least two brackets and the main reinforcing member are integrally formed, and the at least two brackets are connected to the frame through the main reinforcing member.

4. The backlight module according to any one of claims 1-3, characterized in that, The extension direction of the light source is parallel to a first direction, and the width direction of the light source is parallel to a second direction; in the first direction, the length of the main reinforcing member is less than or equal to the length of the light source; in the second direction, the width of the main reinforcing member is greater than the width of the light source.

5. The backlight module according to any one of claims 1-3, characterized in that, The extension direction of the light source is parallel to the first direction, and the width direction of the light source is parallel to the second direction; the backlight module further includes: a first auxiliary reinforcement and / or two second auxiliary reinforcements; Wherein, the first auxiliary reinforcing member is connected to the side of the base plate away from the side plate, and the first auxiliary reinforcing member and the main reinforcing member are disposed opposite to each other in the second direction; The two second auxiliary reinforcing members are connected to the side of the base plate away from the side plate, and the two second auxiliary reinforcing members are arranged opposite to each other in the first direction.

6. The backlight module according to claim 5, characterized in that, The backlight module further includes: two adhesive strips arranged opposite each other in the first direction, the adhesive strips being bonded to the side of the base plate away from the side plate; the side of the adhesive strip away from the base plate is used to bond to the back cover; In the case where the backlight module includes the two second auxiliary reinforcing members, the two adhesive strips are distributed between the two second auxiliary reinforcing members in the first direction.

7. The backlight module according to claim 5, characterized in that, Both the first auxiliary reinforcing member and the main reinforcing member have at least two first brackets, the first brackets protruding from the outer edge of the base plate, and the first brackets are used to connect to the rear shell; And / or, each of the two second auxiliary reinforcements has at least two second brackets, the second brackets protruding from the outer edge of the base plate, the second brackets being used for connection to the rear shell.

8. The backlight module according to any one of claims 1-3 and 6-7, characterized in that, The bracket includes: a flat portion and a curved portion connected together; the side of the curved portion away from the flat portion is connected to the frame; in a direction perpendicular to the backlight module, the flat portion is located between the side of the side plate near the bottom plate and the side away from the bottom plate; In the direction perpendicular to the backlight module, the side of the planar portion near the light-emitting side of the backlight module is a support surface, which is used to support the driving circuit board.

9. A display screen, characterized in that, include: Backlight module, LCD panel and driver circuit board; The backlight module is the backlight module according to any one of claims 1 to 8; The liquid crystal display panel is located on the light-emitting side of the backlight module, and the driving circuit board is connected to at least two brackets in the backlight module and is electrically connected to the liquid crystal display panel.

10. A display device, characterized in that, include: The display screen as claimed in claim 9, and the rear housing connected to the display screen.

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