Display module and display device

Abstract

The utility model discloses a display module and a display device, and belongs to the technical field of display. The display panel comprises a frame body, a display panel, an elastic support, a circuit board and a protection board. Wherein the elastic bracket can press the circuit board against the protection plate, so that the circuit board is assembled between the frame body and the protection plate. As the two sides of the circuit board are in contact connection with the fixing support and the protection plate respectively, when the frame body generates relative displacement relative to the display panel under the action of external force, the circuit board connected with the display panel can move along with the display panel and generate relative displacement relative to the frame body, and therefore the display panel can be prevented from being damaged. The problem that the display panel leaks light due to the fact that the circuit board pulls the display panel is solved.

Description

Technical Field

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

[0002] Currently, display devices are used more and more widely, and commonly used display devices include smart phones, tablet computers, and spliced ​​display devices.

[0003] The display device includes a display module, which is used to display images. The display module includes a display panel, a circuit board, a backlight unit and a frame. The backlight unit and the display panel are both mounted on the frame. The display panel is located in the light emitting direction of the backlight unit. The circuit board is fixedly connected to the display panel and the frame respectively. The display panel can receive light provided by the backlight unit to display images.

[0004] However, when the display module is subjected to external impact, the display panel is more susceptible to damage by the external force. Utility Model Content

[0005] The embodiment of the utility model provides a display module and a display device. The technical solution is as follows:

[0006] According to a first aspect of the utility model, a display module is provided, the display module comprising a frame, a display panel, an elastic bracket, a circuit board and a protection plate;

[0007] The frame includes a bottom plate and a side plate connected to each other, the display panel is connected to a side of the side plate away from the bottom plate, and the side plate is used to enclose a receiving space;

[0008] The elastic bracket is connected to a side of the side plate facing away from the accommodation space;

[0009] The circuit board is located on a side of the elastic bracket away from the side plate, and the circuit board is bound and connected to the non-display part of the display panel;

[0010] The protection plate is located on a side of the circuit board away from the side plate and is connected to the frame;

[0011] Wherein, a side of the circuit board facing the side plate abuts against the elastic bracket, and a side of the circuit board facing away from the side plate abuts against the protection plate.

[0012] Optionally, the circuit board has a grounding portion on a surface close to the elastic bracket;

[0013] The elastic bracket is conductive, one end of the elastic bracket is fixedly connected to the side plate, and the other end of the elastic bracket abuts against the grounding portion.

[0014] Optionally, the elastic bracket includes opposite first and second plate bodies, and two opposite connecting plate bodies. The two ends of each connecting plate body are respectively connected to the second plate body and the first plate body. The first plate body is fixedly connected to the side plate, and the second plate body contacts the grounding portion of the circuit board;

[0015] The connecting plate body is elastic in the arrangement direction of the first and second plate bodies.

[0016] Optionally, the connecting plate body includes a first sub-plate and a second sub-plate. One end of the first sub-plate is connected to the second plate body, the other end of the first sub-plate is connected to one end of the second sub-plate, the other end of the second sub-plate is connected to the first plate body, and the plate surface of the first sub-plate intersects with the plate surface of the second sub-plate.

[0017] Optionally, the angle between the plate surface of the first sub-plate and the plate surface of the second plate body is an acute angle, and the angle between the plate surface of the second sub-plate and the plate surface of the first plate body is an acute angle.

[0018] Optionally, the angle between the plate surface of the first sub-plate and the plate surface of the second plate body is an obtuse angle, and the angle between the plate surface of the second sub-plate and the plate surface of the first plate body is an obtuse angle.

[0019] Optionally, the angle between the plate surface of the first sub-plate and the plate surface of the second sub-plate of one connecting plate body in the same elastic bracket is the same as the angle between the plate surface of the first sub-plate and the plate surface of the second sub-plate of another connecting plate body.

[0020] Optionally, the elastic bracket includes a third plate body and a fourth plate body. The two ends of the third plate body are respectively fixedly connected to the side plate and one end of the fourth plate body. The fourth plate body contacts the grounding portion of the circuit board, and the plate surface of the third plate body intersects with the plate surface of the fourth plate body.

[0021] Optionally, the side plate includes a connected metal side plate and a supporting side plate. The supporting side plate is closer to the accommodating space than the metal side plate, and the side of the supporting side plate facing away from the bottom plate is connected to the display panel;

[0022] Wherein, the metal side plate, the third plate body and the fourth plate body are of an integral structure.

[0023] Optionally, the metal side plate has an opening. One end of the third plate body is fixedly connected to the metal side plate at the boundary of the opening, and the angle between the plate surface of the third plate body and the plate surface of the fourth plate body is an obtuse angle.

[0024] Optionally, the elastic support has a contact surface connected to the grounding portion, and the area of the contact surface is smaller than the area of the region where the grounding portion is located in the circuit board.

[0025] Optionally, the ratio of the area of the contact surface to the area of the region where the grounding portion is located in the circuit board ranges from 30% to 80%.

[0026] Optionally, the protection plate has a convex structure, and the convex structure has a convex surface and a concave surface opposite to each other in a first direction. The first direction is perpendicular to the plate surface of the protection plate. The convex surface is closer to the circuit board than the concave surface, and the circuit board is in contact with the convex surface of the convex structure.

[0027] Optionally, the display module further includes a chip-on-film structure, one end of the chip-on-film structure is bonded to the display panel, and the other end of the chip-on-film structure is bonded to the circuit board.

[0028] According to another aspect of the present invention, a display device is provided. The display device includes: a power supply component and a display module. The display module is the above-mentioned display module, and the power supply component is used to supply power to the display module.

[0029] The beneficial effects brought by the technical solutions provided by the embodiments of the present invention at least include:

[0030] A display module including a frame, a display panel, an elastic support, a circuit board, and a protection plate is provided. The elastic support can press the circuit board against the protection plate to assemble the circuit board between the frame and the protection plate. Since both sides of the circuit board are in contact connection with the fixed support and the protection plate respectively, when the frame generates a relative displacement with respect to the display panel under the action of an external force, the circuit board connected to the display panel can move with the display panel and generate a relative displacement with the frame to avoid the problem that the circuit board pulls the display panel and causes light leakage of the display panel. In this way, the impact resistance of the display module can be improved by increasing the movement freedom of the circuit board, and the risk of damage to the display panel caused by external forces can be reduced.

[0031] In addition, by connecting the circuit board to the elastic support and the protection plate respectively, the difficulty of installing or disassembling the circuit board can be reduced. Description of the Drawings

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0033] Figure 1 is a schematic structural view of a display module;

[0034] Figure 2 is a schematic structural view of a display module provided by an embodiment of the present invention;

[0035] Figure 3 is Figure 2 a schematic cross-sectional structural view of the display module shown along the A1 - A2 position;

[0036] Figure 4 is a schematic internal structural view of a display module provided by an embodiment of the present invention;

[0037] Figure 5 is a schematic structural view of another display module provided by an embodiment of the present invention;

[0038] Figure 6 is a schematic structural view of another display module provided by an embodiment of the present invention;

[0039] Figure 7 is a schematic structural view of an elastic bracket and a circuit board provided by an embodiment of the present invention;

[0040] Figure 8 is a schematic structural view of an elastic bracket provided by an embodiment of the present invention;

[0041] Figure 9 is a schematic structural view of another elastic bracket provided by an embodiment of the present invention;

[0042] Figure 10 is a schematic structural view of a second plate body and a grounding portion provided by an embodiment of the present invention;

[0043] Figure 11 is Figure 8 a schematic structural view of another perspective of the elastic bracket shown;

[0044] Figure 12 is Figure 9 a schematic structural view of another perspective of the elastic bracket shown;

[0045] Figure 13 is a schematic view of the compressed state of an elastic bracket provided by an embodiment of the present invention;

[0046] Figure 14 is a schematic structural view of another display module provided by an embodiment of the present invention;

[0047] Figure 15 is a schematic structural view of a protection plate provided by an embodiment of the present invention;

[0048] Figure 16 is a schematic structural diagram of another display module provided by an embodiment of the present utility model;

[0049] Figure 17 is a schematic structural diagram of another display module provided by an embodiment of the present utility model;

[0050] Figure 18 is a schematic structural diagram of another display module provided by an embodiment of the present utility model.

[0051] Through the above-mentioned drawings, specific embodiments of the present utility model have been shown, and there will be more detailed descriptions hereinafter. These drawings and textual descriptions are not intended to limit the scope of the concept of the present utility model in any way, but to illustrate the concept of the present utility model to those skilled in the art by referring to specific embodiments. Specific Embodiments

[0052] To make the objectives, technical solutions and advantages of the present utility model clearer, the embodiments of the present utility model will be further described in detail below in conjunction with the drawings.

[0053] A liquid crystal display device is usually a backlight type liquid crystal display device, and the backlight type liquid crystal display device includes a liquid crystal display panel and a backlight unit. The liquid crystal display panel includes an array substrate, a color filter substrate, and a liquid crystal layer located between the array substrate and the color filter substrate. The liquid crystal display panel can control the rotation direction of the liquid crystal molecules in the liquid crystal layer by applying a driving voltage to the array substrate and the color filter substrate, thereby controlling the arrangement direction of the liquid crystal molecules in the liquid crystal layer to refract the light provided by the backlight unit to form a display image. Exemplarily, when no voltage is applied to the display panel, the arrangement of the liquid crystal molecules in the liquid crystal layer remains unchanged, and the light provided by the backlight unit cannot pass through the liquid crystal layer, and the display panel shows a dark state; when a voltage is applied to the display panel, the arrangement mode of the liquid crystal molecules in the liquid crystal layer changes, and the light can pass through the liquid crystal layer, so that the display panel shows a bright state.

[0054] Please refer to Figure 1 , Figure 1It is a schematic structural diagram of a display module 20. The display module 20 includes a display panel 21 (English: Panel), a circuit board 22 (English: Printed Circuit Board; abbreviation: PCB), a backlight unit (English: BackLight Unit; abbreviation: BLU) (not shown in the figure), a frame 23, and a foam 24. The backlight unit and the display panel 21 are both mounted on the frame 23. The display panel 21 is located in the light-emitting direction of the backlight unit. The circuit board 22 is fixedly connected to the display panel 21 and the frame 23 respectively. The display panel 21 can receive the light provided by the backlight unit to display an image. Exemplarily, the foam 24 is bonded to the frame 23 and the circuit board 22 respectively to fix the circuit board 22 on the frame 23.

[0055] However, when the display module 20 is subjected to external vibration or external impact, the display panel 21 in the display module 20 is relatively vulnerable to external force damage. Specifically, when the display module 20 is subjected to external vibration, external impact, or alternating hot and cold environmental temperatures, the backlight unit is relatively likely to have a relative displacement with the display panel 21. Since the circuit board 22 is fixed on the frame 23, both the circuit board 22 and the frame 23 will move relative to the display panel 21 along with the backlight unit; and since the circuit board 22 is connected to the display panel 21, during the movement of the circuit board 22, the circuit board 22 pulls the edge of the display panel, causing the display panel 21 to deform under the action of external force. At the deformed position of the display panel 21, the arrangement of the liquid crystal molecules in the display panel 21 will also be affected, thereby causing the problem of light leakage in the display panel 21.

[0056] Please refer to Figure 2 、 Figure 3 and Figure 4 , Figure 2 is a schematic structural diagram of a display module 10 provided by an embodiment of the present invention. Figure 3 is Figure 2 a schematic cross-sectional structural diagram of the display module 10 along the A1 - A2 position shown in Figure 4 is a schematic internal structural diagram of a display module 10 provided by an embodiment of the present invention. The display module 10 may include a display panel 11, a frame 12, a circuit board 13, a protection board 14, and an elastic bracket 15.

[0057] The frame 12 may include a connected bottom plate 121 and side plates 122. The display panel 11 is connected to the side opposite to the bottom plate 121 of the side plates 122. The side plates 122 are used to enclose a receiving space, and the receiving space may be used to receive the backlight unit.

[0058] The elastic bracket 15 is connected to the side of the side plate 122 facing away from the accommodation space; the circuit board 13 is located on the side of the elastic bracket 15 facing away from the side plate 122, and the circuit board 13 is fixedly connected to the non-display part of the display panel 11; the protection board 14 is located on the side of the circuit board 13 facing away from the side plate 122 and is connected to the frame 12; wherein, one side of the circuit board 13 facing the side plate 122 abuts against the elastic bracket 15, and one side of the circuit board 13 facing away from the side plate 122 abuts against the protection board 14. The display module further includes a Chip On Film (COF) structure 16, one end of the COF structure 16 is fixedly connected to the display panel 11, and the other end of the COF structure 16 is fixedly connected to the circuit board 13.

[0059] The protection board 14 can be fixedly connected to the frame 12. Exemplarily, the connection manner between the protection board 14 and the frame 12 can be a bolt connection. The circuit board 13 can be located between the protection board 14 and the side plate 122, and the circuit board 13 can be connected to the edge of the display panel 11.

[0060] The elastic bracket 15 can be located between the circuit board 13 and the side plate 122. One end of the elastic bracket 15 can be connected to the side plate 122 of the frame 12, and the other end of the elastic bracket 15 can abut against the circuit board 13 to press the circuit board 13 against the protection board 14. One end of the elastic bracket 15 can be fixedly connected to the side plate 122 of the frame 12, and the other end of the elastic bracket 15 can be in contact with the circuit board 13. Exemplarily, the elastic bracket 15 can be fixed to the side plate 122 of the frame 12 by bolts, or the elastic bracket 15 can be fixed to the side plate 122 of the frame 12 by an adhesive layer.

[0061] That is to say, the elastic support 15 can be located on the side of the circuit board 13 close to the side plate 122 of the frame 12, and the elastic support 15 can be in contact with the circuit board 13 to press the circuit board 13 against the protection board 14, so that the circuit board 13 can be assembled between the frame 12 and the protection board 14. Since the circuit board 13 is in contact connection with the elastic support 15, and the circuit board 13 and the protection board 14 are also in contact connection, when the frame 12 generates a relative displacement relative to the display panel 11 under the action of an external force, the circuit board 13 can not move with the frame 12, so as to avoid the circuit board 13 pulling the display panel 11 through the COF structure 16. In other words, when the frame 12 generates a relative displacement relative to the display panel 11 under the action of an external force, the circuit board 13 can move with the movement of the display panel 11. Exemplarily, when the display module 10 is subjected to external vibration, external impact or alternating hot and cold environmental temperature, the backlight unit generates a relative displacement with the display panel 11 and drives the frame 12 and the display panel 11 to also generate a relative displacement. Since the circuit board 13 is in contact connection with both the frame 12 and the protection board 14, in the direction parallel to the board surface of the circuit board 13, the circuit board 13 can move with the movement of the display panel 11. That is to say, the circuit board 13 can generate a relative displacement with the frame 12 and the protection board 14 to avoid the problem that the circuit board 13 pulls the COF structure 16 connected to the display panel 11, resulting in deformation of the display panel 11 under the action of an external force, thereby avoiding the problem of light leakage of the display panel 11. In this way, by increasing the movement freedom degree of the circuit board 13, the impact resistance of the display module 10 can be improved, the risk of damage to the display panel 11 caused by an external force can be reduced, and the display effect of the display surface can be improved. Moreover, since the circuit board 13 can move with the display panel 11, the risk of detachment of the COF structure 16 can be reduced.

[0062] In addition, by the circuit board 13 being in contact connection with the elastic support 15 and the protection board 14 respectively, the difficulty of installing or disassembling the circuit board 13 can be reduced, so as to facilitate the disassembly of the circuit board 13 for replacement or repair when the circuit board 13 is damaged. Exemplarily, when the circuit board 13 is damaged, the circuit board 13 can be disassembled from the display module 10 to repair the circuit board 13. Since the circuit board 13 is abutted against the protection board 14 through the elastic support 15, there are fewer structures connected to the circuit board 13, and the disassembly difficulty of the circuit board 13 is smaller, which can make the repair or replacement difficulty of the circuit board 13 smaller.

[0063] In summary, the embodiment of the present utility model provides a display module including a frame body, a display panel, an elastic bracket, a circuit board, and a protection board. The elastic bracket can press the circuit board against the protection board to assemble the circuit board between the frame body and the protection board. Since both sides of the circuit board are respectively in contact connection with the fixed bracket and the protection board, when the frame body generates a relative displacement relative to the display panel under the action of an external force, the circuit board connected to the display panel can move along with the display panel and generate a relative displacement with the frame body, so as to avoid the problem that the circuit board pulls the display panel and causes light leakage of the display panel. In this way, by increasing the movement freedom of the circuit board, the impact resistance of the display module can be improved, and the risk of the display panel being damaged by an external force can be reduced.

[0064] In addition, by connecting the circuit board to the elastic bracket and the protection board respectively in contact, the difficulty of installing or disassembling the circuit board can be reduced.

[0065] Please refer to Figure 5 , Figure 5 FIG. is a schematic structural diagram of another display module 10 provided by the embodiment of the present utility model. In an optional embodiment, the side plate 122 includes a metal side plate 1221 and a support side plate 1222. The support side plate 1222 can be connected to the metal side plate 1221. Further, the support side plate 1222 can be fixedly connected to the metal side plate 1221. The fixed connection method can be bolt connection, snap connection, or bonding. The metal side plate 1221 and the bottom plate 121 can be an integral structure. The plate surface of the bottom plate 121 intersects with the plate surface of the metal side plate 1221, that is, the bottom plate 121 and the metal side plate 1221 are connected and not parallel. One end of the support side plate 1222 away from the bottom plate 121 of the frame body 12 can be bonded to the display panel 11 to support the display panel 11 through the support side plate 1222.

[0066] In an optional embodiment, the material of the protection board 14 includes metal. The circuit board 13 has a plurality of electronic components. The protection board 14 can perform electromagnetic shielding on the plurality of electronic components on the circuit board 13. In other words, the protection board 14 can shield the interference of external electromagnetic waves on the plurality of electronic components on the circuit board 13, and can avoid the electromagnetic waves generated by the plurality of electronic components on the circuit board 13 from radiating outside the display module 10. In this way, by providing the protection board 14 outside the circuit board 13, the stability and reliability of the electronic components on the circuit board 13 working in an electromagnetic interference environment can be improved, and the effect and harm of electromagnetic radiation on the human body can also be reduced.

[0067] The circuit board 13 can be bound and connected to the display panel 11 through the COF structure 16. The protection board 14 can also be located on at least a part of the side of the COF structure 16 facing away from the frame 12. That is, the protection board 14 can be located on the side of the circuit board 13 and the COF structure 16 away from the frame 12. The protection board 14 can be used to protect the circuit board 13 and the COF structure 16.

[0068] The COF structure 16 includes a driving chip (or called integrated circuit; English: integrated circuit; abbreviation: IC) and a flexible printed circuit board (English: Flexible Printed Circuit Board; abbreviation: FPC). The COF structure 16 adopts the chip on film packaging technology of fixing the driving chip on the flexible printed circuit board. Among them, the display panel 11 includes a driving circuit. One end of the flexible printed circuit board is electrically connected to the driving circuit, and the other end of the flexible printed circuit board can be bound and connected to the circuit board 13. It can be understood that when the circuit board 13 moves in a direction perpendicular to the board surface of the circuit board 13 along with the frame 12, the circuit board 13 may generate a relative displacement with the display panel 11. In this case, since the flexible printed circuit board is a sheet structure, the sheet-like flexible circuit board 13 can deform along with the movement of the circuit board 13 to generate a buffering effect between the circuit board 13 and the display panel 11.

[0069] Please refer to Figure 5 and Figure 6 , Figure 6 is a schematic structural diagram of another display module 10 provided by an embodiment of the present invention. The circuit board 13 has a plurality of avoidance notches h1. The protection board 14 has a protruding connection bracket 142. The connection bracket 142 can pass through the avoidance notch h1 and contact the side plate 122 of the frame 12, and is fixedly connected to the side plate 122 of the frame 12 through bolts to connect the protection board 14 and the frame 12.

[0070] Please refer to Figure 5 , Figure 6 and Figure 7 , Figure 7 is a schematic structural diagram of an elastic bracket 15 and a circuit board 13 provided by an embodiment of the present invention. Figure 7The schematic structural diagram of the elastic support 15 and the circuit board 13 shown can be a schematic diagram of looking at the elastic support 15 and the circuit board 13 in a direction perpendicular to the board surface of the circuit board 13. In an alternative embodiment, a grounding portion 131 is provided on a surface of the circuit board 13 close to the elastic support 15; the elastic support 15 has conductivity, one end of the elastic support 15 is fixedly connected to the side plate 122, and the other end of the elastic support 15 abuts against the grounding portion 131 of the circuit board 13. The elastic support 15 can be compressed in a target direction, which is a direction perpendicular to the board surface of the side plate 122. The material of the elastic support 15 can include metal. Exemplarily, the material of the elastic support 15 is steel. The grounding portion 131 can be a copper exposed area on the circuit board 13.

[0071] When the display module 10 is subjected to vibration or external impact, even if the distance between the frame 12 and the circuit board 13 changes, that is, when the frame 12 undergoes a slight displacement in a direction away from the circuit board 13 along with the vibration, since the elastic support 15 has elasticity and one end of the elastic support 15 is fixedly connected to the frame 12 and the other end is in contact with the circuit board 13, therefore, the elastic support 15 can undergo slight deformation along with the displacement of the frame 12. After the vibration ends, the elastic elastic support 15 can restore its original shape, enabling the frame 12 and the circuit board 13 to be stably connected through the elastic support 15. In this way, the elastic support 15 can timely conduct the static electricity generated by the circuit board 13 to the frame 12, thereby achieving the effect of releasing the static electricity on the circuit board 13.

[0072] In the embodiment of the present utility model, through the stacked arrangement of the side plate 122 of the frame 12, the elastic support 15 and the circuit board 13, a flexible connection is achieved between the circuit board 13 and the side plate 122 of the frame 12. When the display module 10 is subjected to vibration or external impact, the side plate 122 of the frame 12, the elastic support 15 and the circuit board 13 can still abut against each other, so that the static electricity generated by the circuit board 13 can be transmitted to the frame 12 through the elastic support 15 and then the static electricity is released from the frame 12 to the external environment, thereby achieving a good static electricity release effect.

[0073] It should be noted that in the drawings of the embodiment of the present utility model, only the case where the number of the grounding portions 131 in the circuit board 13 is 3 and the number of the elastic supports 15 is 3 is shown. The number of the grounding portions 131 in the circuit board 13 can be 1 or more, and the number of the elastic supports 15 can also be 1 or more. Moreover, the multiple grounding portions 131 and the multiple elastic supports 15 can correspond one by one. The embodiment of the present utility model does not limit this.

[0074] Please refer to Figure 7 、 Figure 8 and Figure 9 , Figure 8This is a schematic structural diagram of an elastic bracket 15 provided by an embodiment of the present invention. Figure 9 This is a schematic structural diagram of another elastic bracket 15 provided by an embodiment of the present invention. In an optional implementation manner, the elastic bracket 15 may include opposite first plate body 151 and second plate body 152, and two opposite connecting plate bodies 153. Two ends of the connecting plate body 153 are respectively connected to the second plate body 152 and the first plate body 151. The first plate body 151 is fixedly connected to the side plate 122, and the second plate body 152 is in contact with the grounding portion 131 of the circuit board 13.

[0075] The plate surface of the first plate body 151 and the plate surface of the second plate body 152 may be parallel, and the plate surface of the first plate body 151 and the plate surface of the metal side plate 1221 may be parallel. The connecting plate body 153 is elastic in the arrangement direction of the first plate body 151 and the second plate body 152, so that the elastic bracket 15 has a compression function in the arrangement direction of the first plate body 151 and the second plate body 152, and the abutting stability between the elastic bracket 15 and the circuit board 13 can be improved.

[0076] Please refer to Figure 7 、 Figure 8 and Figure 9 In an optional implementation manner, the side plate may include a first sub - plate b1 and a second sub - plate b2. One end of the first sub - plate b1 is connected to the second plate body 152, the other end of the first sub - plate b1 is connected to one end of the second sub - plate b2, the other end of the second sub - plate b2 is connected to the first plate body 151, and the plate surface of the first sub - plate b1 intersects with the plate surface of the second sub - plate b2.

[0077] Through the connected and non - parallel first sub - plate b1 and second sub - plate b2, the compression function of the elastic bracket 15 in the second direction can be realized. The second direction is the direction perpendicular to the plate surface of the second plate body 152, and the second direction is parallel to the arrangement direction of the first plate body 151 and the second plate body 152. Thus, through the elastic bracket 15 with elastic function, the electrical connection stability between the circuit board 13 and the frame 12 can be improved.

[0078] Please refer to Figure 7 and Figure 10 , Figure 10 This is a schematic structural diagram of a second plate body 152 and a grounding portion 131 provided by an embodiment of the present invention. In an optional implementation manner, the elastic bracket has a contact surface connected to the grounding portion, and the area of the contact surface is smaller than the area of the region where the grounding portion is located in the circuit board. When the ambient temperature of the display module 10 alternates between hot and cold, due to the different thermal expansion and contraction amounts of the backlight on the frame 12 and the display panel 11, a relative displacement is formed between the display panel 11 and the frame 12. As Figure 4 and Figure 10As shown, when the housing 12 and the elastic support 15 are displaced, the circuit board 13 may not move with the housing 12. In this case, the area of the region where the grounding portion 131 of the circuit board 13 is located is larger than the area of the contact surface of the elastic support 15, so that during the displacement of the housing 12 and the elastic support 15 relative to the circuit board 13, the contact surface of the elastic support 15 can always be within the grounding portion 131 of the circuit board 13. At the same time, it is also possible to avoid the elastic support 15 having an overly large size that interferes with the electronic components on the circuit board 13.

[0079] Exemplarily, the contact surface of the elastic support 15 is the plate surface of the second plate body 152, and the area of the contact surface is the area of the plate surface of the second plate body 152.

[0080] In an exemplary embodiment, the ratio range of the area of the contact surface of the elastic support 15 to the area of the region where the grounding portion 131 in the circuit board 13 is located is 30% - 80%. Exemplarily, the ratio of the area of the contact surface of the elastic support 15 to the area of the region where the grounding portion 131 in the circuit board 13 is located is 30%, 35%, 40%, 46%, 67%, or 80%. Within this range, during the relative displacement of the elastic support 15 and the circuit board 13, the elastic support 15 and the grounding portion 131 of the circuit board 13 are always in contact, so that the electrical connection between the elastic support 15 and the circuit board 13 is relatively stable.

[0081] In an exemplary embodiment, the dimensional difference between the area of the region where the grounding portion 131 of the circuit board 13 is located and the area of the second plate body 152 of the elastic support 15 can be calculated according to the following formula:

[0082] △X = L×(K BLU - K Panel )×△T;

[0083] Wherein, △X is the relative displacement value between the display panel 11 and the backlight element, L is the long side dimension of the display module 10, K BLU is the thermal expansion coefficient of the backlight element, K Panel is the thermal expansion coefficient of the display panel 11, and △T is the reliability ambient temperature.

[0084] Exemplarily, the size of the display module 10 is 55 inches, and the long side dimension L of the display module 10 = 1211.4 mm; the thermal expansion coefficient K BLU of the backlight element = 2.32×10 -5 , and the thermal expansion coefficient K Panel of the display panel 11 = 8×10 -6; The reliability ambient temperature ΔT = 40°C. According to the above formula, the relative displacement value ΔX between the display panel 11 and the backlight element can be obtained as ΔX = 0.74 mm. Based on the relative displacement value ΔX = 0.74 mm, a displacement size of 1 mm can be taken as the safety size for the relative displacement between the display panel 11 and the backlight element. Thus, it can be concluded that when the size of the area where the grounding portion 131 of the circuit board 13 is located is 5 mm × 7 mm, the size of the plate surface of the second plate body 152 of the elastic bracket 15 can be 4 mm × 5 mm.

[0085] Please refer to Figure 8 and Figure 9 , in an alternative embodiment, the first plate body 151, the second plate body 152, and the two connecting plate bodies 153 are an integral structure formed by bending a target plate body; the thickness range of the target plate body is 0.5 mm to 2 mm. Among them, the first plate body 151 may include a third sub-plate and a fourth sub-plate, and the third sub-plate and the fourth sub-plate are respectively connected to the two connecting plate bodies 153. Exemplarily, the thickness range of the target plate body is 0.5 mm, 0.8 mm, 1 mm, 1.6 mm, or 2 mm.

[0086] In an exemplary embodiment, when the force on the edge of the display panel 11 exceeds 40 N, the light leakage problem of the display panel 11 is more obvious. That is, when the tensile force between the circuit board 13 and the display panel 11 exceeds 40 N, the circuit board 13 needs to perform adaptive displacement to release the stress on the edge of the display panel 11. Therefore, the friction force between the elastic bracket 15 and the circuit board 13 should be less than or equal to 40 N. Exemplarily, the material of the elastic bracket 15 can be 65Mn spring steel, so that the friction force between the elastic bracket and the grounding portion 131 of the circuit board 13 is less than or equal to 40 N.

[0087] Exemplarily, a normal stress simulation experiment can be performed on the elastic bracket 15 to determine the thickness value of the target plate body. For example, assuming the thickness of the target plate body is 0.1 mm, the area of the plate surface of the second plate body 152 is 4 mm × 4.75 mm = 19 mm 2 , through the normal stress simulation of the elastic bracket 15, it can be obtained that when the elastic bracket 15 is compressed by 0.5 mm in the direction perpendicular to the plate surface of the second plate body 152, the average normal stress that the elastic bracket 15 can generate on the circuit board 13 is 1.84 MPa, and the normal pressure is F N = 1.84 MPa × 19 mm 2 = 34.96 N, and the maximum friction force F between the elastic bracket 15 and the circuit board 13 f = f × F N= 0.15 × 34.96N = 5.244N, where f is the friction coefficient between steel and copper, f = 0.15. There are 6 grounding parts on a circuit board 13, and the resultant force of the maximum friction forces of the 6 elastic brackets 15 on the circuit board 13 is 6 × 5.244N = 31.464N < 40N. From this, it can be known that when the thickness of the target board body is 0.1mm, the problem of light leakage of the display panel 11 can be avoided.

[0088] Please refer to Figure 11 and Figure 12 , Figure 11 is Figure 8 a schematic structural diagram of another perspective of the elastic bracket 15 shown in Figure 12 is Figure 9 a schematic structural diagram of another perspective of the elastic bracket 15 shown in. In an alternative embodiment, as shown in Figure 11 , the included angle α1 between the plate surface of the first sub-board b1 and the plate surface of the second board body 152 is an acute angle, and the included angle α2 between the plate surface of the second sub-board b2 and the plate surface of the first board body 151 is an acute angle. That is to say, the connecting plate body 153 is a plate body structure bent inward, and the middle area of one connecting plate body 153 can retract a certain distance towards the middle area of the other connecting plate body 153. In this way, the elastic bracket 15 can be prevented from interfering with the electronic components on the circuit board 13.

[0089] Or, as shown in Figure 12 , the included angle α3 between the plate surface of the first sub-board b1 and the plate surface of the second board body 152 is an obtuse angle, and the included angle α4 between the plate surface of the second sub-board b2 and the plate surface of the first board body 151 is an obtuse angle. That is to say, the connecting plate body 153 is a plate body structure bent outward.

[0090] In an exemplary embodiment, taking the elastic bracket 15 with a thickness of 1mm and the size of the second board body 152 being 30mm × 24mm as an example, through a simulation experiment on the bending direction of the connecting plate body 153 of the elastic bracket 15, it can be obtained that when the elastic bracket 15 is compressed, the average force on the second board body 152 of the elastic bracket 15 with the connecting plate body 153 bent outward in the compression direction is -34.437MPa, that is, the second board body 152 tends to be sunken downward. The average force on the second board body 152 of the elastic bracket 15 with the connecting plate body 153 bent inward in the compression direction is 8.776MPa, that is, the second board body 152 tends to arch upward. From this, it can be known that when the connecting plate body 153 of the elastic bracket 15 is bent inward, the second board body 152 of the elastic bracket 15 can be in close contact with the circuit board 13, and the connection stability between the elastic bracket 15 and the circuit board 13 can be improved.

[0091] Please refer to Figure 8 and Figure 9, in an alternative embodiment, the angle between the plate surface of the first sub - plate b1 and the plate surface of the second sub - plate b2 of a connecting plate body 153 in the same elastic support 15 is the same as the angle between the plate surface of the first sub - plate b1 and the plate surface of the second sub - plate b2 of another connecting plate body 153. In this way, the bending directions and bending angles of the two connecting plate bodies 153 are symmetrical, which can balance the acting forces between various regions of the second plate body 152 of the elastic support 15 and the circuit board 13, so as to further improve the lapping stability between the elastic support 15 and the circuit board 13.

[0092] In an exemplary embodiment, the second plate body 152 of the elastic support 15 has opposite and parallel first edge c1 and second edge c2, and the two connecting plate bodies 153 of the elastic support 15 are respectively connected to the first edge c1 and the second edge c2; the two connecting plate bodies 153 of the elastic support 15 are symmetrical along the target straight line c3, and the target straight line c3 is the middle parallel line of the first edge c1 and the second edge c2.

[0093] Please refer to Figure 4 and Figure 13 , Figure 13 FIG. is a schematic diagram of the compressed state of an elastic support 15 provided by an embodiment of the present invention. The elastic support 15 located between the circuit board 13 and the side plate 122 of the frame 12 can be in a compressed state, that is, the elastic support 15 can maintain a certain compression amount. Exemplarily, assuming that the preset distance between the circuit board 13 and the side plate 122 of the frame 12 is z, and the compression amount of the elastic support 15 is s, then the height H of the elastic support 15 = z + s, where the height of the elastic support 15 is the dimension of the elastic support 15 in the direction perpendicular to the plate surface of the second plate body 152. The range of the compression amount s of the elastic support 15 can be 0.5 mm to 1 mm. Specifically, when the compression amount s of the elastic support 15 is 0.5 mm and the preset distance z between the circuit board 13 and the side plate 122 of the frame 12 is 2.4 mm, the height H of the elastic support 15 can be obtained as 2.9 mm.

[0094] That is to say, the circuit board 13 may include a carrier board and electronic components located on the carrier board. The plate surface of the circuit board 13 is the plate surface of the carrier board. Since the side plate 122 of the frame 12 and the carrier board in the circuit board 13 are respectively located on both sides of the electronic components, the elastic support 15 can make a preset distance between the side plate 122 of the frame 12 and the carrier board in the circuit board 13. This preset distance can be the height of the elastic support 15 in the compressed state, and this preset distance is greater than the height of the electronic components in the direction perpendicular to the carrier board.

[0095] In an exemplary embodiment, the surface of the second plate body 152 of the elastic support 15 may be parallel to the surface of the carrier board of the circuit board 13, and the surface of the first plate body 151 of the elastic support 15 may be parallel to the surface of the side plate 122 of the frame body 12.

[0096] Please refer to Figure 14 and Figure 15 , Figure 14 which is a schematic structural diagram of another display module 10 provided by an embodiment of the present invention. Figure 15 Figure 4 is a schematic structural diagram of a protection plate 14 provided by an embodiment of the present invention. In an optional embodiment, the protection plate 14 may have a convex structure 141. The convex structure 141 has a convex surface a1 and a concave surface a2 opposite to each other in a first direction. The first direction is perpendicular to the surface of the protection plate 14. The convex surface a1 is closer to the circuit board 13 than the concave surface a2. That is, the convex surface a1 is located on the side of the concave surface a2 close to the circuit board 13, and the circuit board 13 is in contact with the convex surface a1 of the convex structure 141.

[0097] In this way, the convex structure 141 can support the circuit board 13, so that there can be a space capable of accommodating electronic components between the carrier board of the circuit board 13 and the protection plate 14, and the electronic components can be prevented from being squeezed by other devices.

[0098] As Figure 14 shown, the convex structure 141 may be a hollow structure. When the circuit board 13 is fixed, the elastic support 15 can press the circuit board 13 against the convex structure 141 of the protection plate 14. In this case, the circuit board 13 can apply a pressure in a direction away from the circuit board 13 to the convex structure 141, and the convex structure 141 may undergo slight deformation so that the convex structure 141 can release the mechanical stress between the circuit board 13 and the protection plate 14.

[0099] Mechanical stress refers to the internal force that acts between various parts of an object when the object deforms due to external factors (such as pressure, humidity change, etc.). Mechanical stress can resist the action of such external factors and tries to make the object return from the deformed position to the position before deformation. Since the materials of the carrier board of the circuit board 13 and the protection board 14 are different, after the carrier board of the circuit board 13 and the protection board 14 are affected by the external environment, the magnitudes of the mechanical stresses generated are different. The mechanical stress may cause deformations in both the carrier board of the circuit board 13 and the protection board 14, and the degrees of deformation of the carrier board of the circuit board 13 and the protection board 14 are different. Therefore, the protruding structure 141 can serve as a buffer structure between the carrier board of the circuit board 13 and the protection board 14 to release the mechanical stress of the carrier board of the circuit board 13 and the mechanical stress of the protection board 14, and prevent the mechanical stress on the carrier board of the circuit board 13 and the mechanical stress on the protection board 14 from affecting the connection stability between the carrier board of the circuit board 13 and the protection board 14.

[0100] The protruding surface a1 of the protruding structure 141 may include a top surface a11 and a side surface a12. The top surface a11 of the protruding surface a1 may be parallel to the board surface of the carrier board of the circuit board 13, and the top surface a11 of the protruding surface a1 of the protruding structure 141 may be a flat surface. This can increase the contact area between the circuit board 13 and the protruding structure 141, improve the connection stability between the circuit board 13 and the protruding structure 141, and also prevent the pressure exerted by the protruding structure 141 on the carrier board of the circuit board 13 from being too concentrated, causing deformation of the carrier board of the circuit board 13.

[0101] Please refer to Figure 16 , Figure 16 FIG. is a schematic structural diagram of another display module 10 provided by an embodiment of the present invention. In an alternative embodiment, the display module 10 further includes a buffer pad 18. The buffer pad 18 is located between the circuit board 13 and the protection board 14, and the buffer pad 18 is connected to the protection board 14. The buffer pad 18 may include a glue material or a foam, and the buffer pad 18 can be used to absorb the energy generated when the protection board 14 deforms, so as to prevent the protection board 14 from squeezing the circuit board 13 and further protect the circuit board 13.

[0102] Optionally, the display module 10 further includes a retaining wall structure 19. The retaining wall structure 19 is located on the side of the protection board 14 facing away from the circuit board 13. The retaining wall structure 19 can be used to improve the aesthetics of the display module 10. The thickness range of the retaining wall structure 19 is 0.2 mm to 0.5 mm. Exemplarily, the thickness of the retaining wall structure 19 is 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm or 0.5 mm, so as to reduce the distance from the boundary of the display area of the display module 10 to the contour edge of the display module 10, thereby realizing a narrow border of the display module 10. Moreover, when the display module 10 is used in a tiled display device, the width of the tiled seam can be reduced, improving the display effect of the tiled display device.

[0103] Please refer to Figure 17 , Figure 17 which is a schematic structural diagram of another display module 10 provided by an embodiment of the present invention. In an optional implementation manner, the elastic bracket 15 may include a third plate body 154 and a fourth plate body 155. Two ends of the third plate body 154 are respectively fixedly connected to the side plate 122 and the fourth plate body 155, and the fourth plate body 155 contacts the grounding portion 131 of the circuit board 13. Exemplarily, the plate surface of the fourth plate body 155 fits the grounding portion 131.

[0104] The plate surface of the third plate body 154 intersects with the plate surface of the fourth plate body 155, and the included angle between the plate surface of the third plate body 154 and the plate surface of the side plate 122 is an acute angle or an obtuse angle. In this way, by bending and connecting the third plate body 154 and the fourth plate body 155, the elastic bracket 15 can have elasticity, which can improve the stability of the electrical connection between the circuit board 13 and the frame 12.

[0105] In an exemplary implementation manner, the side plate 122 may include a connected metal side plate 1221 and a support side plate 1222. The support side plate 1222 is closer to the accommodation space than the metal side plate 1221, and the side of the support side plate 1222 facing away from the bottom plate 121 is connected to the display panel 11. Among them, the metal side plate 1221, the third plate body 154, and the fourth plate body 155 are of an integral structure, which can improve the stability of the display module.

[0106] Optionally, the metal side plate 1221 has an opening k1, and one end of the third plate body 154 is fixedly connected to the metal side plate 1221 at the boundary of the opening k1, and the included angle between the plate surface of the third plate body 154 and the plate surface of the fourth plate body 155 is an obtuse angle.

[0107] The third plate body 154, the fourth plate body 155, and the metal side plate 1221 may be of an integral structure formed by a stamping process. A plate-like structure can be stamped so that appropriate positions on the plate-like structure protrude to obtain the third plate body 154, the fourth plate body 155, and the metal side plate 1221. In this way, the structure of the display module 10 can be simplified, and the manufacturing difficulty of the display module 10 can be reduced.

[0108] Optionally, the contact surface where the elastic bracket 15 is connected to the grounding portion 131 on the circuit board 13 may also be the plate surface of the fourth plate body 155.

[0109] Please refer to Figure 18 , Figure 18 which is a schematic structural diagram of another display module 10 provided by an embodiment of the present invention. The display module 10 may further include a conductive wire 153, and the conductive wire 153 may be electrically connected to the frame 12 and the circuit board 13 respectively to play a role in discharging static electricity.

[0110] In summary, a display module including a housing, a display panel, an elastic bracket, a circuit board, and a protection board is provided. The elastic bracket can press the circuit board against the protection board to assemble the circuit board between the housing and the protection board. Since both sides of the circuit board are respectively in contact connection with the fixed bracket and the protection board, when the housing generates a relative displacement with respect to the display panel under the action of an external force, the circuit board connected to the display panel can move with the display panel and generate a relative displacement with the housing, so as to avoid the problem that the circuit board pulls the display panel and causes light leakage of the display panel. In this way, the impact resistance of the display module can be improved by increasing the movement freedom of the circuit board, and the risk of damage to the display panel caused by external forces can be reduced.

[0111] In addition, by respectively connecting the circuit board in contact with the elastic bracket and the protection board, the difficulty of installing or disassembling the circuit board can be reduced.

[0112] In addition, an embodiment of the present invention further provides a display device, which includes: a power supply component and a display module, where the display module is the above-mentioned display module, and the power supply component is used to supply power to the display module. The display device can be any device that displays moving (e.g., video), stationary (e.g., still image), text, or images. More specifically, it is contemplated that the embodiments can be implemented in or associated with a variety of electronic devices, such as (but not limited to) mobile phones, wireless devices, personal data assistants (PDAs), handheld or portable computers, GPS receivers / navigators, cameras, MP4 video players, video cameras, game consoles, watches, clocks, calculators, television monitors, flat panel displays, computer monitors, automotive displays (e.g., odometer displays, etc.), navigators, cockpit controllers and / or displays, displays for camera views (e.g., displays for rear view cameras in vehicles), electronic photos, electronic billboards or signs, projectors, architectural structures, packaging, and aesthetic structures (e.g., displays for images of a piece of jewelry), etc.

[0113] It should be noted that in the drawings, the dimensions of layers and regions may be exaggerated for clarity of illustration. Also, 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 an intermediate layer. Additionally, it is understood that when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element, or there may be more than one intermediate layer or element. Further, it is 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. Like reference numerals throughout indicate like elements.

[0114] In the present utility model, the terms "first", "second", "third" and "fourth" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance. The term "plural" means two or more unless otherwise clearly defined.

[0115] The above are only alternative embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A display module, characterized in that, The display module includes a frame, a display panel, an elastic bracket, a circuit board, and a protection board; The frame includes a bottom plate and side plates connected thereto. The display panel is connected to a side of the side plates facing away from the bottom plate, and the side plates are used to enclose an accommodation space; The elastic bracket is connected to a side of the side plates facing away from the accommodation space; The circuit board is located on a side of the elastic bracket facing away from the side plates, and the circuit board is bonded and connected to a non-display part of the display panel; The protection board is located on a side of the circuit board facing away from the side plates and is connected to the frame; Wherein, one side of the circuit board facing the side plates abuts against the elastic bracket, and the other side of the circuit board facing away from the side plates abuts against the protection board.

2. The display module according to claim 1, wherein A grounding portion is provided on a surface of the circuit board close to the elastic bracket; The elastic bracket has conductivity. One end of the elastic bracket is fixedly connected to the side plates, and the other end of the elastic bracket abuts against the grounding portion.

3. The display module according to claim 2, wherein The elastic bracket includes a first plate body and a second plate body opposite to each other, and two connecting plate bodies opposite to each other. Two ends of the connecting plate bodies are respectively connected to the second plate body and the first plate body. The first plate body is fixedly connected to the side plates, and the second plate body contacts the grounding portion of the circuit board; The connecting plate body has elasticity in the arrangement direction of the first plate body and the second plate body.

4. The display module according to claim 3, wherein The connecting plate body includes a first sub-plate and a second sub-plate. One end of the first sub-plate is connected to the second plate body, the other end of the first sub-plate is connected to one end of the second sub-plate, the other end of the second sub-plate is connected to the first plate body, and the plate surface of the first sub-plate intersects with the plate surface of the second sub-plate.

5. The display module according to claim 4, wherein An included angle between the plate surface of the first sub-plate and the plate surface of the second plate body is an acute angle, and an included angle between the plate surface of the second sub-plate and the plate surface of the first plate body is an acute angle.

6. The display module according to claim 4, wherein, An included angle between the plate surface of the first sub-plate and the plate surface of the second plate body is an obtuse angle, and an included angle between the plate surface of the second sub-plate and the plate surface of the first plate body is an obtuse angle.

7. The display module according to claim 4, wherein An included angle between the plate surface of the first sub-plate and the plate surface of the second sub-plate of one connecting plate body in the same elastic bracket is the same as an included angle between the plate surface of the first sub-plate and the plate surface of the second sub-plate of another connecting plate body.

8. The display module according to claim 2, wherein The elastic bracket includes a third plate body and a fourth plate body. Two ends of the third plate body are respectively fixedly connected to the side plates and one end of the fourth plate body. The fourth plate body contacts the grounding portion of the circuit board, and the plate surface of the third plate body intersects with the plate surface of the fourth plate body.

9. The display module according to claim 8, wherein The side plates include a metal side plate and a support side plate connected to each other. The support side plate is closer to the accommodation space than the metal side plate, and a side of the support side plate facing away from the bottom plate is connected to the display panel; Wherein, the metal side plate, the third plate body, and the fourth plate body are of an integral structure.

10. The display module according to claim 9, wherein, The metal side plate has an opening. One end of the third plate body is fixedly connected to the metal side plate at the boundary of the opening, and an included angle between the plate surface of the third plate body and the plate surface of the fourth plate body is an obtuse angle.

11. The display module according to any one of claims 2-10, characterized in that The elastic support has a contact surface connected to the grounding portion, and the area of the contact surface is smaller than the area of the region where the grounding portion in the circuit board is located.

12. The display module according to claim 11, wherein The ratio range of the area of the contact surface to the area of the region where the grounding portion in the circuit board is located is 30% to 80%.

13. The display module according to any one of claims 2-10, characterized in that, The protection plate has a convex structure, and the convex structure has a convex surface and a concave surface opposite to each other in a first direction, the first direction being perpendicular to the plate surface of the protection plate, the convex surface being closer to the circuit board than the concave surface, and the circuit board being in contact with the convex surface of the convex structure.

14. The display module according to any one of claims 2-10, characterized in that, The display module further includes a flip-chip film structure, one end of the flip-chip film structure being bonded to the display panel, and the other end of the flip-chip film structure being bonded to the circuit board.

15. A display device, characterized in that, The display device includes: a power supply component and a display module, the display module being the display module according to any one of claims 1 to 14, and the power supply component being used to supply power to the display module.

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