Backlight module and display terminal

Abstract

This application relates to a backlight module and a display terminal. The backlight module includes a back plate, a base plate, and side plates disposed around the periphery of the base plate. The base plate and the side plates form a receiving cavity, and a notch is provided on the edge of the base plate. A reinforcing portion is provided on the back plate near the notch. In the backlight module of this application embodiment, by providing a reinforcing portion near the notch on the back plate, the reinforcing portion can improve the mechanical strength of the back plate and reduce the risk of deformation of the back plate near the notch after being subjected to external impact.

Description

Technical Field

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

[0002] The liquid crystal display includes a backlight module, which includes a backplate that houses the light source and optical films. To enable signal input to the light source, a notch is provided on the backplate. The light source is connected to an external power supply via a connector that passes through the notch.

[0003] Because of the notch in the back panel, the mechanical strength of the back panel decreases at the notch, and the back panel is prone to deformation after being subjected to external impact. Utility Model Content

[0004] This application provides a backlight module and display terminal to improve the technical problem of reduced mechanical strength of the back panel at the notch and easy deformation of the back panel after being subjected to external impact.

[0005] To achieve the above objectives, according to a first aspect of this application, a backlight module is provided, comprising: The back plate includes a bottom plate and a side plate disposed around the periphery of the bottom plate, the bottom plate and the side plate forming a receiving cavity, and the edge of the bottom plate is provided with a notch; The back plate has a reinforcing part near the notch.

[0006] Optionally, the reinforcing portion includes a bent portion connected to one end of the side plate away from the base plate, the orthographic projection of the bent portion on the base plate overlapping the notch.

[0007] Optionally, in the extending direction of the side plate, the length of the bend is greater than the length of the notch.

[0008] Optionally, the backlight module further includes a light strip located on the side of the side plate near the receiving cavity, and the light strip located on the side of the bent portion near the bottom plate.

[0009] Optionally, the reinforcing portion further includes an extension connected to one end of the side plate near the notch, the extension extending beyond the base plate in the thickness direction of the base plate.

[0010] Optionally, the backlight module further includes a connector, which is a connector head disposed on the side of the light strip away from the extension portion. The connector head is located outside the receiving cavity, and the extension portion extends beyond the light strip in a direction perpendicular to the base plate.

[0011] Optionally, the reinforcing portion includes a first protrusion located on the base plate, the first protrusion protruding toward the side of the base plate away from the receiving cavity, and the notch located within the first protrusion; and / or, The reinforcing portion includes a second protrusion located on the side plate, the second protrusion protruding toward the side of the side plate away from the receiving cavity.

[0012] Optionally, the reinforcing portion includes a first convex hull and a second convex hull, and the first convex hull and the second convex hull are connected.

[0013] Optionally, the backlight module further includes a light strip located within the receiving cavity. The backlight module also includes a connector, which is a ribbon cable. One end of the ribbon cable passes through the notch, and the other end of the ribbon cable is bonded to the surface of the light strip near the base plate. Alternatively, the other end of the ribbon cable is bonded to the surface of the light strip near the side plate.

[0014] According to a second aspect of this application, a display terminal is provided, including the backlight module described above.

[0015] In the backlight module of this application embodiment, by providing a reinforcing part near the notch on the back plate, the reinforcing part can improve the mechanical strength of the back plate and reduce the risk of deformation of the back plate near the notch after being impacted by external force.

[0016] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description 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 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.

[0017] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0018] Figure 1 This is a top view of a backlight module provided in an exemplary embodiment of this disclosure; Figure 2 yes Figure 1 A schematic diagram of a cross-sectional structure at point CC; Figure 3 yes Figure 2 A partially enlarged structural diagram of the backplate; Figure 4 yes Figure 2A partial top view of the back panel structure; Figure 5 yes Figure 2 A partial three-dimensional structural diagram of the back panel; Figure 6 yes Figure 1 Another cross-sectional structural diagram at the CC position; Figures 7A to 7C yes Figure 6 Schematic diagrams of various enlarged parts of the backplate; Figure 8 yes Figure 6 A partial three-dimensional structural diagram of the back panel; Figure 9A and Figure 9B yes Figure 6 Two enlarged schematic diagrams of the light strip and connector in the diagram; Figure 10 yes Figure 1 Another cross-sectional structural diagram at the CC position; Figure 11 This is a schematic diagram of the structure of a display terminal provided in an exemplary embodiment of this disclosure.

[0019] Explanation of reference numerals in the attached figures: 1-Backlight module; 10-Back plate; 11-Bottom plate; 11a-Notch; 12-Side plate; 13-Reinforcing part; 131-Bending part; 132-Extension part; 133-First convex bud; 134-Second convex bud; 20 - LED strip; 21 - Circuit board; 22 - LED chip; 30-Connector; 31-Connector head; 32-Ribbon cable; 41-Light guide plate; 42-Optical film; 43-Reflective sheet; 44-Middle frame; 441-Connecting plate; 442-Carrier plate; 45-Adhesive part; L1 - Length of the bend 131; L2 - Length of the notch 11a; 2-Display terminal; 3-Display panel; 4-Front frame. Detailed Implementation

[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the protection scope of this application.

[0021] According to the first aspect of this application, Figures 1 to 5As shown, a backlight module 1 is provided, including a back plate 10, a bottom plate 11 and a side plate 12 disposed on the periphery of the bottom plate 11, the bottom plate 11 and the side plate 12 form a receiving cavity, and a notch 11a is provided on the edge of the bottom plate 11; wherein, a reinforcing part 13 is provided on the back plate 10 near the notch 11a.

[0022] The material of the back plate 10 can be stainless steel, iron, aluminum or other metal materials.

[0023] like Figure 2 As shown, both the side plate 12 and the base plate 11 are flat. The base plate 11 can be rectangular or the like. The side plate 12 is disposed around the base plate 11, and the thickness direction of the side plate 12 can be approximately perpendicular to the thickness direction of the base plate 11, thereby enclosing and forming a receiving cavity. The receiving cavity can be used to accommodate light source components, etc.

[0024] like Figures 2 to 5 As shown, a notch 11a is provided at the edge of the base plate 11, that is, the notch 11a is located inside the base plate 11 and close to the edge of the base plate 11. The notch 11a allows the structure inside the cavity to pass through, thereby realizing the connection between the structure inside the cavity and the structure outside the cavity. For example, the notch 11a allows the connector 30 to pass through, but it is not limited to this.

[0025] like Figures 3 to 5 As shown, the material of the reinforcing part 13 can be the same as that of the back plate 10, that is, the reinforcing part 13 is machined on the back plate 10. The reinforcing part 13 can be a bending, convex or other structure.

[0026] like Figures 3 to 5 As shown, because the back plate 10 has a notch 11a, the mechanical strength of the back plate 10 decreases at the notch 11a, making it prone to deformation after being subjected to external impact. For example, as... Figure 3 As shown, when an external force impacts the side plate 12 along its thickness direction, the direction of the external force is... Figure 3 As indicated by the arrow, the mechanical strength at the notch 11a is relatively weak, and the side plate 12 is prone to indentation into the receiving cavity after being subjected to force, resulting in deformation of the side plate 12. In the embodiments of this application, a reinforcing part 13 is provided on the back plate 10 near the notch 11a. The reinforcing part 13 can improve the mechanical strength of the back plate 10 and reduce the risk of deformation of the back plate 10 near the notch 11a after being subjected to external impact.

[0027] In some embodiments, such as Figure 2 As shown, the backlight module 1 can be a side-lit backlight. In the side-lit backlight, the light source assembly includes a light strip 20 and a reflective sheet 43, a light guide plate 41 and an optical film 42 stacked in sequence.

[0028] like Figure 2As shown, the reflector 43 is disposed on the side of the light guide plate 41 near the base plate 11. The reflector 43 is used to reflect the light emitted from the bottom of the light guide plate 41 back into the light guide plate 41, thereby reducing light loss and improving the efficiency of the light source.

[0029] like Figure 2 As shown, the light guide plate 41 is made of a transparent polymer material, such as polymethyl methacrylate (PMMA) or polycarbonate (PC). A light strip 20 is disposed between the side plate 12 and the sidewall of the light guide plate 41. The light strip 20 includes multiple LEDs 22. Light emitted from the LEDs 22 is incident on the sidewall of the light guide plate 41, and conducted through the light guide plate 41 to the entire plane, forming a planar light source. The LEDs 22 can be LEDs, etc., but are not limited to these. The light strip 20 can be connected to a structure outside the receiving cavity through a notch 11a, thereby providing power to the light strip 20.

[0030] like Figure 2 As shown, the optical film 42 is disposed on the side of the light guide plate 41 opposite to the base plate 11. The optical film 42 includes a diffuser and a prism sheet stacked sequentially. The diffuser is used to homogenize the light, making the light-emitting surface evenly distributed. The prism sheet concentrates the light towards the front through the principles of refraction and reflection, thereby improving brightness.

[0031] In other embodiments, the backlight module 1 can be a direct-lit backlight, and the light source assembly can be a stacked reflector 43, a lamp board, a diffuser, etc. The lamp board is flat, and its thickness direction is parallel to the thickness direction of the base plate 11. Multiple LED beads 22 can be disposed on the surface of the lamp board away from the base plate 11. The LED beads 22 can be LEDs, Mini-LEDs, etc., but are not limited to these. The lamp board can be connected to a structure outside the receiving cavity through a notch 11a, thereby providing power to the lamp board.

[0032] In some embodiments, such as Figure 2 As shown, the backlight module 1 also includes a middle frame 44, which is disposed at the edge of the receiving cavity and connected to the back plate 10. The middle frame 44 is used to fix the light source assembly of the backlight module 1, ensuring the structural stability of the backlight module 1, and also playing a certain role in light shielding and protection.

[0033] In some embodiments, the material of the middle frame 44 may be plastic or the like. The middle frame 44 may be integrally formed by injection molding. The middle frame 44 may include a connecting plate 441 and a support plate 442 connected to the connecting plate 441. The connecting plate 441 may be engaged with the side plate 12 of the back plate 10, but is not limited thereto. The support plate 442 may extend into the receiving cavity of the back plate 10, and a limiting structure may be provided on the side of the support plate 442 near the bottom plate 11 to position the optical film 42 and prevent the optical film 42 from moving within the receiving cavity of the back plate 10.

[0034] In some embodiments, the backlight module 1 further includes an adhesive portion 45, which is disposed on the side surface of the support plate 442 away from the base plate 11, and is used to bond to the display panel 3. The adhesive portion 45 can be made of a pressure-sensitive adhesive or other adhesive material.

[0035] Optionally, such as Figures 2 to 4 As shown, the reinforcing part 13 includes a bent part 131 connected to the end of the side plate 12 away from the bottom plate 11, and the orthographic projection of the bent part 131 on the bottom plate 11 overlaps with the notch 11a.

[0036] In some embodiments, such as Figures 2 to 4 As shown, the reinforcing part 13 includes a bent part 131, which is connected to the side plate 12 and extends towards the side closer to the receiving cavity. The material of the bent part 131 can be the same as that of the side plate 12. The bent part 131 can be formed by a bending process. By providing the bent part 131, the mechanical strength of the back plate 10 can be improved, reducing the risk of deformation of the back plate 10 near the notch 11a after being subjected to external impact.

[0037] In some embodiments, such as Figure 3 and Figure 4 As shown, the orthographic projection of the bent portion 131 on the base plate 11 overlaps with the notch 11a. Through the above arrangement, the bent portion 131 and the notch 11a can be aligned, thereby improving the mechanical strength at the notch 11a.

[0038] Optionally, such as Figure 4 As shown, in the extending direction of the side plate 12, the length L1 of the bend 131 is greater than the length L2 of the notch 11a.

[0039] The extension direction of side plate 12 refers to the direction of its long side, which is the same as the extension direction of the outline of base plate 11. Figure 4 In this design, the side plate 12 extends horizontally. The length L1 of the bent portion 131 refers to the dimension of the bent portion 131 in the extending direction of the side plate 12, and the length L2 of the notch 11a refers to the dimension of the notch 11a in the extending direction of the side plate 12. By setting the length L1 of the bent portion 131 to be greater than the length L2 of the notch 11a, the bent portion 131 can reinforce the entire area of ​​the notch 11a.

[0040] Optionally, such as Figure 2 As shown, the backlight module 1 also includes a light strip 20, which is located on the side of the side plate 12 near the receiving cavity, and the light strip 20 is located on the side of the bent portion 131 near the bottom plate 11.

[0041] In some embodiments, the light strip 20 is located on the side of the bent portion 131 near the base plate 11. The bent portion 131 can limit the movement of the light strip 20. When the light strip 20 moves upward, the bent portion 131 abuts against the upper surface of the light strip 20, thereby preventing the light strip 20 from moving in the direction away from the base plate 11. When the light strip 20 moves in the direction away from the base plate 11, it will cause aesthetic problems such as light shadows in the backlight module 1. Therefore, the bent portion 131 can limit the upward movement of the light strip 20 and prevent aesthetic problems such as light shadows in the backlight module 1. Optionally, such as Figure 3 and Figure 5 As shown, the reinforcing part 13 also includes an extension 132 connected to one end of the side plate 12 near the notch 11a, and the extension 132 extends beyond the bottom plate 11 in the thickness direction of the bottom plate 11.

[0042] like Figure 3 and Figure 5 As shown, the extension 132 is connected to the side plate 12, and the material of the extension 132 can be the same as that of the side plate 12. By providing the extension 132, the mechanical strength of the back plate 10 can be improved, and the risk of deformation of the back plate 10 near the notch 11a after being subjected to external impact can be reduced.

[0043] Optionally, such as Figure 2 As shown, the backlight module 1 also includes a connector 30, which is a connector 31. The connector 31 is located on the side of the light strip 20 away from the extension 132. The connector 31 is located outside the receiving cavity, and the extension 132 extends beyond the light strip 20 in a direction perpendicular to the base plate 11.

[0044] In some embodiments, the connector 30 is a connector 31, which can be connected to the light strip 20. The connector 31 can be used to connect to an external structure, thereby inputting power signals such as power to the light strip 20.

[0045] In some embodiments, the connector 31 can be soldered to the circuit board 21 of the light strip 20 to achieve electrical connection with the circuit in the circuit board 21.

[0046] like Figure 2 As shown, the connector 31 is located outside the receiving cavity. This is because the connector 31 is relatively large. If the connector 31 were located inside the receiving cavity, it would occupy space within the cavity, increasing the height of the cavity and hindering the achievement of a thinner backlight module 1. By placing the connector 31 outside the receiving cavity, the thickness of the backlight module 1 is only increased locally.

[0047] like Figure 2As shown, the extension 132 extends beyond the light strip 20 in the thickness direction of the base plate 11. With the above arrangement, the extension 132 can cover the light strip 20 in the thickness direction of the base plate 11, thereby protecting the light strip 20 and preventing it from being damaged by external impact. At the same time, the extension 132 can also improve the mechanical strength of the back plate 10 at the notch 11a.

[0048] Optionally, Figure 6 The embodiments and Figure 2 The difference in the embodiment lies in the reinforcing part 13, the light strip 20, and the connector 30. For example... Figures 6 to 8 As shown, the reinforcing part 13 includes a first protrusion 133 located on the bottom plate 11, the first protrusion 133 protruding toward the side of the bottom plate 11 away from the receiving cavity, and a notch 11a located inside the first protrusion 133; and / or, the reinforcing part 13 includes a second protrusion 134 located on the side plate 12, the second protrusion 134 protruding toward the side plate 12 away from the receiving cavity.

[0049] In some embodiments, such as Figures 6 to 8 As shown, the reinforcing part 13 includes a first protrusion 133. The first protrusion 133 is part of the base plate 11, and the first protrusion 133 can be formed by a stamping process, but is not limited thereto.

[0050] In some embodiments, a base plate 11 may be formed by stamping first, and then a first protrusion 133 may be formed by stamping on the base plate 11.

[0051] In other embodiments, the base plate 11 and the first protrusion 133 can be formed by stamping in one step.

[0052] It should be noted that, as Figure 6 and Figure 7A As shown, the first protrusion 133 can be a double-layer protrusion, that is, a single-layer protrusion is first stamped on the base plate 11, and the single-layer protrusion has a step with the surface of the base plate 11. Then, the first protrusion 133 is stamped on the single-layer protrusion, and the double-layer protrusion has two steps with the surface of the base plate 11. When the first protrusion 133 is a double-layer protrusion, the mechanical strength of the back plate 10 can be further improved compared with the single-layer protrusion.

[0053] like Figure 7A and Figure 8 As shown, the surface of the first convex bulge 133 protrudes from the side of the base plate 11 away from the receiving cavity. By providing a notch 11a within the first convex bulge 133, the first convex bulge 133 can enhance the mechanical strength of the back plate 10 and reduce the risk of deformation of the back plate 10 near the notch 11a after being subjected to external impact. The direction of the external force can be... Figure 7A The direction indicated by the arrow in the image.

[0054] In some embodiments, such as Figure 7BAs shown, the reinforcing part 13 includes a second protrusion 134. The second protrusion 134 is part of the side plate 12, and the second protrusion 134 can be formed by a stamping process, but is not limited thereto.

[0055] In some embodiments, the side plate 12 may be formed by stamping first, and then the second protrusion 134 may be formed by stamping on the side plate 12.

[0056] In other embodiments, the side plate 12 and the second protrusion 134 can be formed by stamping in one step.

[0057] It should be noted that the second protrusion 134 can be a double-layer protrusion, that is, a single-layer protrusion is first stamped on the side plate 12, and then the second protrusion 134 is stamped on the single-layer protrusion. When the second protrusion 134 is a double-layer protrusion, it can further improve the mechanical strength of the back plate 10 compared with a single-layer protrusion.

[0058] like Figure 7B As shown, the surface of the second protrusion 134 protrudes from the side surface of the side plate 12 away from the receiving cavity. By providing the second protrusion 134 on the side plate 12, the mechanical strength of the back plate 10 can be further improved, reducing the risk of deformation of the back plate 10 near the notch 11a after being subjected to external impact. The direction of the external force can be... Figure 7B The direction of the arrow in the image.

[0059] In some embodiments, such as Figure 7C As shown, the reinforcing part 13 includes a first convex hull 133 and a second convex hull 134. The arrangement of the first convex hull 133 and the second convex hull 134 is similar to that in the above embodiment, and will not be repeated here.

[0060] Optionally, such as Figure 7C As shown, the first convex bud 133 and the second convex bud 134 are connected. The end of the first convex bud 133 near the side plate 12 extends to the edge of the bottom plate 11, and the end of the second convex bud 134 near the bottom plate 11 extends to the edge of the side plate 12. The first convex bud 133 and the second convex bud 134 are adjacent to each other. In other words, there is no part of the side plate 12 or part of the bottom plate 11 between the first convex bud 133 and the second convex bud 134. Through the above arrangement, the first convex bud 133 and the second convex bud 134 can reinforce each other, further improving the mechanical strength of the back plate 10 and reducing the risk of deformation of the back plate 10 near the notch 11a after being impacted by external forces. The direction of the external force can be... Figure 7C The direction of the arrow in the image.

[0061] Optionally, such as Figure 6As shown, the backlight module 1 also includes a light strip 20 located in the receiving cavity. The backlight module 1 also includes a connector 30, which is a ribbon cable 32. One end of the ribbon cable 32 passes through the notch 11a, and the other end of the ribbon cable 32 is bonded to the side surface of the light strip 20 near the base plate 11. Alternatively, the other end of the ribbon cable 32 is bonded to the side surface of the light strip 20 near the side plate 12.

[0062] In some embodiments, such as Figure 6 As shown, the backlight module 1 is a side-lit backlight. The LED strip 20 is located within the receiving cavity and is positioned close to the side panel 12. The LED strip 20 includes a circuit board 21 and LED beads 22 disposed on the circuit board 21. The circuit board 21 can be a flexible printed circuit board (FPC), a printed circuit board (PCB), etc., but is not limited to these.

[0063] The circuit board 21 is flat, and its thickness direction is parallel to that of the side plate 12. The LED bead 22 is located on the side of the circuit board 21 away from the side plate 12. The light emitted from the LED bead 22 is incident on the side wall of the light guide plate 41, and the light is conducted inside the light guide plate 41 to form a planar light source.

[0064] like Figure 6 As shown, the connector 30 is used to input external power sources such as electricity to the light strip 20 to drive the light strip 20 to emit light.

[0065] In some embodiments, such as Figure 6 As shown, the connector 30 is a ribbon cable 32, which has multiple internal traces. The ribbon cable 32 can input external power signals to the light strip 20. The ribbon cable 32 has a simple structure and low cost. Compared with the connector 30 being a connector 31, the ribbon cable 32 can reduce the cost of the backlight module 1.

[0066] like Figure 6 As shown, one end of the ribbon cable 32 passes through the notch 11a for connection to an external structure; the other end of the ribbon cable 32 is used to connect to the LED strip 20. The ribbon cable 32 and the LED strip 20 can be connected by a bonding connection. Due to the small size of the ribbon cable 32, when the backlight module 1 uses the ribbon cable 32, the area of ​​the notch 11a can be reduced, thereby further improving the mechanical strength of the backplate 10.

[0067] In some embodiments, combined with Figure 6 and Figure 9A The ribbon cable 32 is bonded to the surface of the light strip 20 near the first protrusion 133, that is, the ribbon cable 32 is bonded to the surface of the circuit board 21 near the base plate 11.

[0068] In other embodiments, combined with Figure 6 and Figure 9BThe ribbon cable 32 is bonded to the side surface of the light strip 20 near the side plate 12, that is, the ribbon cable 32 is bonded to the side surface of the circuit board 21 near the side plate 12. Since the circuit board 21 is flat, the area of ​​the side surface of the circuit board 21 near the side plate 12 is larger than the area of ​​the side surface of the circuit board 21 near the first protrusion 133. By bonding the ribbon cable 32 to the side surface of the light strip 20 near the side plate 12, the bonding area between the ribbon cable 32 and the light strip 20 can be increased, making the ribbon cable 32 less likely to fall off the light strip 20, thereby improving the reliability of the connection between the ribbon cable 32 and the light strip 20.

[0069] The bonding connection can be made using conductive adhesive, but is not limited to this.

[0070] It should be understood that in the above embodiments, multiple embodiments can be combined with each other without contradiction, to further improve the mechanical strength of the back plate 10 and reduce the risk of deformation of the back plate 10 near the notch 11a after being subjected to external impact. For example, as Figure 10 As shown, the reinforcing portion 13 includes a bent portion 131 and a first protrusion 133. In some embodiments, the reinforcing portion 13 may include a bent portion 131 and a second protrusion 134. In other embodiments, the reinforcing portion 13 may include a bent portion 131, a first protrusion 133, and a second protrusion 134.

[0071] According to the second aspect of this application, such as Figure 11 As shown, a display terminal 2 is provided, including the backlight module 1 described above.

[0072] In some embodiments, such as Figure 11 As shown, the display terminal 2 includes a backlight module 1 and a display panel 3, which are combined into one unit. The display panel 3 can be bonded and fixed to the adhesive portion 45 of the backlight module 1.

[0073] It should be understood that, Figure 11 Only one backlight module 1 of the embodiments of this application is shown. The display terminal 2 may include any one of the backlight modules 1 in the embodiments of this application.

[0074] The display panel 3 includes a display area and a non-display area surrounding the display area. The display area can have multiple sub-pixels, including red, green, and blue sub-pixels, to achieve color display. The non-display area can have driving circuits, such as gate driving circuits, which can provide driving signals to the sub-pixels. The backlight module 1 provides a backlight for the display panel 3.

[0075] The light-emitting surface of the backlight module 1 is correspondingly set to the display area of ​​the display panel 3, which means that the backlight module 1 can provide a planar light source for at least the entire display area of ​​the display panel 3. The light-emitting surface of the backlight module 1 refers to the side surface of the optical film 42 that faces away from the base plate 11.

[0076] In some embodiments, such as Figure 11 As shown, the display terminal 2 may also include a front frame 4, which is used to fix the display panel 3 to the backlight module 1. The front frame 4 can also protect the edge of the display panel 3 to prevent the display panel 3 from being damaged by external forces.

[0077] In some embodiments, the display panel 3 includes a first substrate and a second substrate facing each other, and a liquid crystal layer disposed between the first substrate and the second substrate. The first substrate is disposed on the side of the second substrate away from the backlight module 1. A first polarizer is disposed on the surface of the first substrate away from the second substrate, and a second polarizer is disposed on the surface of the second substrate away from the first substrate. When light emitted from the backlight module 1 enters the display panel 3, the liquid crystal molecules in the liquid crystal layer of the display panel 3 are deflected under the action of an electric field. The transmittance of liquid crystal molecules with different deflection angles is different, thereby controlling the transmittance of the display panel 3 and realizing the brightness control of the displayed image.

[0078] In this embodiment, the display terminal 2 can be any product or component with display function, such as a mobile phone, tablet computer, television, monitor, laptop computer, digital photo frame, or navigator.

[0079] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0080] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0081] The embodiments, implementation methods, and related technical features of this application can be combined and substituted for each other without conflict.

[0082] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. A backlight module, characterized in that, include: The back plate includes a bottom plate and a side plate disposed around the periphery of the bottom plate, the bottom plate and the side plate forming a receiving cavity, and the edge of the bottom plate is provided with a notch; The back plate has a reinforcing part near the notch.

2. The backlight module of claim 1, wherein, The reinforcing portion includes a bent portion connected to one end of the side plate away from the bottom plate, and the orthographic projection of the bent portion on the bottom plate overlaps with the notch.

3. The backlight module of claim 2, wherein, In the extending direction of the side plate, the length of the bend is greater than the length of the notch.

4. The backlight module of claim 2, wherein, The backlight module also includes a light strip, which is located on the side of the side plate near the receiving cavity, and on the side of the bent portion near the bottom plate.

5. The backlight module of claim 4, wherein, The reinforcing portion further includes an extension connected to one end of the side plate near the notch, the extension extending beyond the base plate in the thickness direction.

6. The backlight module of claim 5, wherein, The backlight module also includes a connector, which is a connector head. The connector head is located on the side of the light strip away from the extension portion. The connector head is located outside the receiving cavity. The extension portion extends beyond the light strip in a direction perpendicular to the base plate.

7. The backlight module of any one of claims 1 to 3, wherein, The reinforcing portion includes a first protrusion located on the base plate, the first protrusion protruding toward the side of the base plate away from the receiving cavity, and the notch located within the first protrusion; and / or, The reinforcing portion includes a second protrusion located on the side plate, the second protrusion protruding toward the side of the side plate away from the receiving cavity.

8. The backlight module of claim 7, wherein, The reinforcing portion includes a first convex hull and a second convex hull, and the first convex hull and the second convex hull are connected.

9. The backlight module of claim 7, wherein, The backlight module also includes a light strip located within the receiving cavity. The backlight module also includes a connector, which is a ribbon cable. One end of the ribbon cable passes through the notch, and the other end of the ribbon cable is bonded to the surface of the light strip near the base plate. Alternatively, the other end of the ribbon cable is bonded to the surface of the light strip near the side plate.

10. A display terminal, characterized by Includes the backlight module as described in any one of claims 1 to 9.

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