Display module and display device

Abstract

The present invention relates to the technical field of display equipment, and discloses a display module and a display device, wherein the display module comprises: a front frame, the front frame comprises a baffle plate and a side plate perpendicular to the baffle plate, the baffle plate is annular, the side plate is connected to the edge of the baffle plate and is arranged around the baffle plate; a backlight source, the backlight source comprises a rubber frame located on the side of the baffle plate adjacent to the side plate and matched with the front frame, the rubber frame comprises a frame area opposite to the baffle plate and a connecting side wall opposite to the side plate, the frame area has a plurality of grooves arranged around the rubber frame, each groove is provided with a first elastic pad that abuts against the baffle plate of the front frame so that the rubber frame and the baffle plate are interference-fitted, and the connecting side wall is snap-connected with the side plate of the front frame. The display module can reduce the vibration and abnormal sound that occur after the front frame and the backlight source are assembled.

Description

Technical Field

[0001] The present invention relates to the technical field of display equipment, and in particular to a display module and a display device. Background Art

[0002] In the prior art, the display module includes a front frame bezel, a backlight source, and a shielded rear cover EMI cover structure. The above structure often has vibration and abnormal noise due to excessive assembly gap during assembly. The main reason for the vibration and abnormal noise is that when the front frame and the backlight are engaged, there is an assembly gap at the engagement position. If the assembly is not in place, for example, the gap is too large, it will cause relative movement between the front frame and the back plate, and the engagement position is metal-to-metal contact, which will produce abnormal noise.

[0003] Common solutions include: (1) reducing the reserved assembly gap and tightening the manufacturing tolerance to ensure that the gap after assembly is very small and no abnormal noise occurs; (2) using tape to wrap the module around (front frame bezel and backlight BLU), which is the most effective way at present. However, reducing the reserved gap will increase the difficulty of assembly, and tightening the manufacturing tolerance will reduce the yield rate, both of which will increase costs. Using tape to change the overall structure of the module is not acceptable to all customers, and it will increase material costs and labor costs. Summary of the invention

[0004] The present invention provides a display module and a display device. The display module can reduce vibration and abnormal noise generated after a front frame and a backlight source are assembled.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A display module, comprising:

[0007] A front frame, the front frame comprising a shielding plate and a side plate perpendicular to the shielding plate, the shielding plate is annular, and the side plate is connected to the edge of the shielding plate and is arranged around the shielding plate;

[0008] A backlight source, the backlight source includes a rubber frame located on the side of the baffle plate adjacent to the side panel and matched with the front frame, the rubber frame includes a frame area opposite to the baffle plate and a connecting side wall opposite to the side panel, the frame area has a plurality of grooves arranged around the rubber frame, each of the grooves is provided with a first elastic pad that abuts against the baffle plate of the front frame to make the rubber frame and the baffle plate interference fit, and the connecting side wall is snap-connected with the side panel of the front frame.

[0009] The above-mentioned display module includes a front frame and a backlight source, the front frame includes a baffle plate and side panels perpendicular to the baffle plate, the backlight source includes a rubber frame matched with the front frame, the rubber frame includes a frame area opposite to the baffle plate and a connecting side wall opposite to the side panel, wherein the connecting side wall is snap-connected with the side panel of the front frame, since the frame area has a plurality of grooves arranged around the rubber frame, each groove is provided with a first elastic pad that abuts against the baffle plate of the front frame, so that the rubber frame and the baffle plate can be interference fit, and the cooperation of the first elastic pad with the front frame can reduce the relative movement between the front frame and the backlight source, and the elasticity of the first elastic pad can achieve a buffering effect, and then the setting of the first elastic pad can reduce the vibration and abnormal sound occurring after the front frame and the backlight source are assembled.

[0010] Optionally, the depth of the groove along a direction perpendicular to the shielding plate is 0.5 mm to 1.5 mm.

[0011] Optionally, the interference between the first elastic pad and the shielding plate is 0.1 mm to 0.6 mm.

[0012] Optionally, the first elastic pad has a Shore hardness of 30 to 60 degrees.

[0013] Optionally, the frame area is in a rectangular ring shape, and each corner of the frame area is provided with the groove.

[0014] Optionally, a plurality of first bosses arranged around the rubber frame are provided on the connecting side wall, and each of the first bosses abuts against a side plate of the front frame to achieve interference fit between the rubber frame and the side plate.

[0015] Optionally, the interference between the first boss and the side plate of the front frame is 0.03 mm to 0.07 mm.

[0016] Optionally, a plurality of openings surrounding the rubber frame are formed on the connecting side wall, an elastic arm is arranged between two side walls opposite to the openings, and the first boss is arranged on the elastic arm.

[0017] Optionally, the thickness of the elastic arm along a direction perpendicular to the connecting side wall where the elastic arm is located is smaller than the thickness of the edge of the opening portion along a direction perpendicular to the connecting side wall where the elastic arm is located.

[0018] Optionally, the inner side of the rubber frame also includes a bearing part parallel to the baffle plate; the backlight source also includes a back plate, a reflective sheet, a light guide plate and an optical film material located on the side of the bearing part away from the baffle plate, the back plate includes a bottom plate parallel to the bearing part and a vertical plate bent from the four edges of the bottom plate toward the bearing part, the outer side wall of the vertical plate is connected to the inner side wall of the rubber frame, the end of the vertical plate is against the bearing part, the reflective sheet, the light guide plate and the optical film material are arranged in sequence between the bottom plate and the bearing part along the direction from the bottom plate to the bearing part, and a plurality of second elastic pads are arranged between the four edges of the light guide plate and the vertical plate to enable an interference fit between the light guide plate and the vertical plate.

[0019] Optionally, a second boss corresponding to each of the second elastic pads is disposed on an edge of the bearing portion adjacent to the light guide plate, and each of the second bosses abuts against the edge of the light guide plate and does not contact the optical film material.

[0020] Optionally, it further includes a display panel located between the bearing portion and the shielding plate, the display panel is provided with a main flexible circuit board, the main flexible circuit board includes a folded portion folded back and attached to a side of the bottom plate away from the bearing portion, and a main connector is provided on a side of the folded portion away from the bottom plate;

[0021] The display module also includes a shielding back cover located on the side of the folded portion away from the bottom plate, the shielding back cover is provided with an escape opening in the area opposite to the main connector, the escape opening is provided with an inclined portion at the edge opposite to the wiring side of the main connector, and the inclined portion extends to the vicinity of the main connector and abuts against the bottom plate.

[0022] The present invention also provides a display device, comprising any one of the display modules provided in the above technical solutions. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A schematic diagram of the structure of a display module provided by an embodiment of the present invention;

[0024] Figure 2 A schematic diagram of the structure of a plastic frame provided by an embodiment of the present invention;

[0025] Figure 3 for Figure 2 A magnified image of area A;

[0026] Figure 4 A cross-sectional view of a display module provided by an embodiment of the present invention;

[0027] Figure 5 for Figure 4 Enlarged view of area B;

[0028] Figure 6 A partial structural schematic diagram of a display module provided by an embodiment of the present invention;

[0029] Figure 7 A schematic diagram of the structure of a plastic frame provided by an embodiment of the present invention;

[0030] Figure 8 An exploded view of a display module provided by an embodiment of the present invention.

[0031] Fig. 9 A partial structural schematic diagram of a display module provided by an embodiment of the present invention;

[0032] Fig.10 A schematic diagram of the structure of a second boss and a second elastic pad provided in an embodiment of the present invention;

[0033] Fig.11 A schematic structural diagram of a shielding back cover provided by an embodiment of the present invention;

[0034] Fig.12 A schematic structural diagram of an inclined portion provided by an embodiment of the present invention;

[0035] icon:

[0036] 1-front frame; 11-shielding plate; 12-side plate; 121-bayonet; 2-rubber frame; 21-frame area; 211-groove; 22-connecting side wall; 221-block; 222-first boss; 223-opening; 224-elastic arm; 23-first elastic pad; 24-bearing part; 241-second boss; 242-buffer foam; 25-buffer foam 3-back plate; 31-bottom plate; 32-vertical plate; 4-reflective sheet; 5-light guide plate; 51-second elastic pad; 6-optical film material; 7-light bar; 71-backlight flexible circuit board; 8-display panel; 81-bend part; 82-main connector; 9-shielding back cover; 91-inclined part; 92-screw. DETAILED DESCRIPTION

[0037] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] Please refer to Figures 1 to 5 The present invention provides a display module, comprising:

[0039] The front frame 1 includes a shielding plate 11 and a side plate 12 perpendicular to the shielding plate 11, the shielding plate 11 is annular, and the side plate 12 is connected to the edge of the shielding plate 11 and is arranged around the shielding plate 11;

[0040] The backlight source includes a rubber frame 2 located on the side of the baffle plate 11 adjacent to the side panel 12 and matched with the front frame 1. The rubber frame 2 includes a frame area 21 opposite to the baffle plate 11 and a connecting side wall 22 opposite to the side panel 12. The frame area 21 has a plurality of grooves 211 arranged around the rubber frame 2. A first elastic pad 23 is arranged in each groove 211 to abut against the baffle plate 11 of the front frame 1 so that the rubber frame 2 and the baffle plate 11 have an interference fit. The connecting side wall 22 is snap-connected with the side panel 12 of the front frame 1.

[0041] The display module provided in the embodiment of the present invention includes a front frame 1 and a backlight source; the front frame 1 includes a shielding plate 11 and a side plate 12 perpendicular to the shielding plate 11, such as Figure 1 As shown; the backlight source includes a plastic frame 2 that cooperates with the front frame 1, the plastic frame 2 includes a border area 21 opposite to the shielding plate 11 and a connecting side wall 22 opposite to the side panel 12, such as Figure 2 As shown; wherein the connecting side wall 22 is engaged with the side plate 12 of the front frame 1, and since the frame region 21 has a plurality of grooves 211 arranged around the plastic frame 2, each groove 211 is provided with a first elastic pad 23 against the shielding plate 11 of the front frame 1, as shown Figure 3 As shown, the rubber frame 2 and the shielding plate can be interference-fitted, such as Figure 4 and Figure 5 As shown, through the cooperation between the first elastic pad 23 and the front frame 1, the relative movement between the front frame 1 and the backlight source can be reduced, and the elasticity of the first elastic pad 23 can achieve a buffering effect, and thus the setting of the first elastic pad 23 can reduce the vibration and abnormal sound occurring after the front frame 1 and the backlight source are assembled.

[0042] In a specific implementation, the depth of the groove 211 along the direction perpendicular to the shielding plate 11 may be 0.5 mm to 1.5 mm, which may be selected according to the thickness of the rubber frame 2 and is not limited here.

[0043] In a specific implementation, the interference between the first elastic pad 23 and the shielding plate 11 may be 0.1 mm to 0.6 mm, which may be determined according to the size and usage scenario, and is not limited here.

[0044] In a specific implementation, the Shore hardness of the first elastic pad 23 may be 30 to 60 degrees, which can ensure that the first elastic pad 23 has a certain elasticity and ensures the buffering effect of the first elastic pad 23 .

[0045] In a specific embodiment, Figure 2 and Figure 3 As shown, the frame area 21 can be in the shape of a rectangular ring, and a groove 211 is provided at each corner of the frame area 21. Grooves 211 are provided at the four corners of the frame area 21, and a first elastic pad 23 is provided in the groove 211, which can better reduce the relative movement of the front frame 1 and the backlight source after assembly, thereby more effectively reducing vibration and abnormal noise.

[0046] Specifically, the first elastic pad 23 may be a silicone pad or other elastic materials, which are not limited here. The connecting side wall 22 of the plastic frame 2 is provided with a plurality of blocks 221 surrounding the plastic frame 2, and the side plate 12 of the front frame 1 is provided with a bayonet 121 corresponding to the blocks 221. Figure 5 As shown, the block 221 and the bayonet 121 are engaged with each other to realize the engagement connection between the front frame 1 and the backlight source. The front frame 1 and the backlight source can also be set to other engagement connection modes, which are not limited here.

[0047] In the display module provided by the embodiment of the present invention, Figure 2 , Figure 3 and Figure 6 As shown, a plurality of first bosses 222 arranged around the rubber frame 2 can also be provided on the connecting side wall 22, and each first boss 222 abuts against the side panel 12 of the front frame 1 to make the rubber frame 2 and the side panel 12 have an interference fit. Through the interference fit between the boss and the side panel 12 of the front frame 1, the front frame 1 and the backlight source can be prevented from moving along the extension direction of the baffle plate 11, and combined with the cooperation between the first elastic pad 23 and the baffle plate 11, it can be ensured that the front frame 1 and the backlight source will not move relative to each other after assembly, which can effectively avoid the occurrence of vibration and abnormal noise.

[0048] In a specific implementation, the interference between the first boss 222 and the side plate 12 of the front frame 1 may be 0.03 mm to 0.07 mm, which may be determined according to actual conditions and is not limited here.

[0049] Optionally, the plastic frame 2 is a rectangular ring structure, and 1-3 bosses can be set on each frame of the plastic frame 2 along its extension direction. The appropriate number of bosses and interference fit can be set according to actual conditions to ensure the assembly efficiency of the front frame 1 and the backlight source and reduce the assembly difficulty.

[0050] In a specific embodiment, Figure 3 As shown, a plurality of openings 223 arranged around the rubber frame 2 may be formed on the connecting side wall 22, an elastic arm 224 may be arranged between two side walls opposite to the opening 223, and the first boss 222 may be arranged on the elastic arm 224, so that the area corresponding to the first boss 222 and the front frame 1 has a certain elasticity, which is convenient for assembly and can prevent the first boss 222 from squeezing the front frame 1 to deform and affect the overall size of the module.

[0051] In a specific embodiment, the thickness of the elastic arm 224 along the direction perpendicular to the connecting side wall 22 where it is located is smaller than the thickness at the edge of the opening 223 along the direction perpendicular to the connecting side wall 22 where it is located, which can further make the area where the first boss 222 is located elastic, achieve a buffering effect, facilitate assembly, and avoid deformation of the front frame 1.

[0052] In the display module provided by the embodiment of the present invention, Figure 7 As shown, the inner side of the plastic frame 2 also includes a bearing portion 24 parallel to the shielding plate, and the bearing portion 24 is a ring-shaped structure; Figure 8 and Fig. 9 As shown, the backlight source also includes a back plate 3, a reflective sheet 4, a light guide plate 5 and an optical film material 6 located on the side of the bearing part 24 away from the shielding plate. The back plate 3 includes a bottom plate 31 parallel to the bearing part 24 and a vertical plate 32 bent from the edges of the bottom plate 31 toward the bearing part 24. The outer wall of the vertical plate 32 is connected to the inner wall of the plastic frame 2, and the end of the vertical plate 32 is against the bearing part 24. The reflective sheet 4, the light guide plate 5 and the optical film material 6 are arranged in sequence along the direction from the bottom plate 31 to the bearing part 24 and are arranged between the bottom plate 31 and the bearing part 24. A plurality of second elastic pads 51 are arranged between the edges of the light guide plate 5 and the vertical plate 32 to make an interference fit between the light guide plate 5 and the vertical plate 32. Among them, the second elastic pad 51 can be a silicone pad or other elastic material, which is not limited here.

[0053] Among them, the second elastic pad 51 between the light guide plate 5 and the vertical plate 32 can fix the light guide plate 5, but the second elastic pad 51 will be squeezed by the expanded light guide plate 5 and float up when vibrating or under high temperature, and interfere with the optical film material 6, squeezing the optical film material 6 to deform and produce wrinkles; the rubber frame 2 and the back plate 3 are offset when assembled, and the gap between the bearing part 24 of the rubber frame 2 and the optical film material 6 is compressed. If the gap is too small or zero, the optical film material 6 will not have enough space when expanding at high temperature and will hit the rubber frame 2, thereby producing wavy wrinkles.

[0054] In a specific embodiment, in order to prevent the optical film 6 from generating wrinkles, as shown in FIG. Fig. 9As shown, the edge of the bearing portion 24 on one side adjacent to the light guide plate 5 may be provided with a second boss 241 corresponding one-to-one with the second elastic pad 51, and each second boss 241 abuts against the edge of the light guide plate 5 and does not contact the optical film material 6. The provision of the second boss 241 can limit the movement of the second elastic pad 51 during vibration, thereby preventing the second elastic pad 51 from contacting the optical film material 6; and the second boss 241 does not contact the optical film material 6, that is, the film material is avoided at the position of the second boss 241, thereby ensuring that the optical film material 6 remains flat; and the provision of the second boss 241 can also ensure that the gap between the bearing portion 24 of the rubber frame 2 and the optical film material 6 will not be reduced due to assembly problems, thereby ensuring that there is enough space for the optical film material 6 to expand. Specifically, as Fig.10 As shown, the position and number of the bosses correspond to the position and number of the second elastic pads 51 .

[0055] In the display module provided by the embodiment of the present invention, Fig. 9 and Fig.11 As shown, it also includes a display panel 8 located between the bearing portion 24 and the shielding plate 11, and a main flexible circuit board is arranged on the display panel 8. The main flexible circuit board includes a folded portion 81 folded and attached to the side of the bottom plate 31 away from the bearing portion 24, and a main connector 82 is arranged on the side of the folded portion 81 away from the bottom plate 31; Fig.11 As shown, the display module may further include a shielding back cover 9 located on the side of the folded portion 81 away from the bottom plate 31, which can protect the main flexible circuit board, and the shielding back cover 9 can be fixedly connected to the bottom plate 31 of the back plate 3 by a plurality of screws 92; the shielding back cover 9 is provided with an avoidance opening in the area opposite to the main connector 82 so as to connect the main connector 82 with the client, wherein, as Fig.12 As shown, the edge of the avoidance opening opposite to the wiring side of the main connector 82 may be provided with an inclined portion 91, which extends to the vicinity of the main connector 82 and abuts against the bottom plate 31. Providing the inclined portion 91 at the avoidance opening can reduce the size of the avoidance opening near the edge of the shielding rear cover 9, and can enhance the strength of the shielding rear cover 9. At the same time, the height of the inclined portion 91 is reduced near the main connector 82, which does not affect the customer's plugging and unplugging of the cable.

[0056] Specifically, Figure 8 The backlight source further includes a light bar 7 located between one side of the light guide plate 5 and the vertical plate 32 . The light bar 7 can be connected to the main flexible circuit board through a backlight flexible circuit board 71 .

[0057] In the display module provided by the embodiment of the present invention, in order to prevent vibration and abnormal sound, double-sided tape can be bonded between the side plate 12 of the front frame 1 and the connecting side wall 22 of the adhesive frame 2, or a circle of tape can be attached to the side and bottom of the display module. In order to achieve a buffer between the front frame 1 and the backlight source, a buffer foam 242 can be set between the bearing part 24 and the display panel 8 to absorb the flatness of the backlight source and reduce dark state light leakage, such as Figure 5 or a buffer foam 25 is provided between the shielding plate 11 of the front frame 1 and the display panel 8, which can absorb the gap between the front frame 1 and the plastic frame 2 and prevent light leakage from the display module, such as Figure 8 shown.

[0058] The present invention also provides a display device, comprising any one of the display modules provided in the above technical solutions.

[0059] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A display module, characterized in that: include: A front frame, the front frame comprising a shielding plate and a side plate perpendicular to the shielding plate, the shielding plate is annular, and the side plate is connected to the edge of the shielding plate and is arranged around the shielding plate; A backlight source, the backlight source comprising a plastic frame located on a side of the baffle plate adjacent to the side plate and matched with the front frame, the plastic frame comprising a frame area opposite to the baffle plate and a connecting side wall opposite to the side plate, the frame area having a plurality of grooves arranged around the plastic frame, each of the grooves being provided with a first elastic pad abutting against the baffle plate of the front frame so that the plastic frame and the baffle plate are interference-fitted, and the connecting side wall is snap-connected with the side plate of the front frame; The frame area is in a rectangular ring shape, the four corners of the frame area are provided with the grooves, and the first elastic pads are provided in the grooves; The connecting side wall is provided with a plurality of first bosses arranged around the rubber frame, each of the first bosses abuts against the side plate of the front frame so that the rubber frame and the side plate are interference fit; The connecting side wall is formed with a plurality of openings surrounding the rubber frame, an elastic arm is arranged between two side walls opposite to the openings, and the first boss is arranged on the elastic arm; The inner side of the plastic frame also includes a bearing portion parallel to the shielding plate, and the backlight source also includes a back plate, a light guide plate and an optical film material located on a side of the bearing portion away from the shielding plate; The back plate includes a bottom plate parallel to the bearing part and a vertical plate bent from the edges of the bottom plate toward the bearing part, the outer side wall of the vertical plate is connected to the inner side wall of the plastic frame, and the end of the vertical plate is against the bearing part; The light guide plate and the optical film are arranged in sequence along the direction from the bottom plate to the bearing part and are disposed between the bottom plate and the bearing part. A plurality of second elastic pads are disposed between the edges of the light guide plate and the vertical plate so that the light guide plate and the vertical plate are interference-fitted. The edge of the bearing portion adjacent to the light guide plate is provided with second bosses corresponding to the second elastic pads one by one, and each of the second bosses abuts against the edge of the light guide plate and does not contact the optical film material; The backlight source further includes a light bar located between one side of the light guide plate and the vertical plate.

2. The display module according to claim 1, characterized in that: The depth of the groove along a direction perpendicular to the shielding plate is 0.5 mm to 1.5 mm.

3. The display module according to claim 1, characterized in that: The interference between the first elastic pad and the shielding plate is 0.1 mm to 0.6 mm.

4. The display module according to claim 1, characterized in that: The first elastic pad has a Shore hardness of 30 to 60 degrees.

5. The display module according to claim 1, characterized in that: The interference between the first boss and the side plate of the front frame is 0.03 mm to 0.07 mm.

6. The display module according to claim 1, characterized in that: The thickness of the elastic arm along a direction perpendicular to the connecting side wall where the elastic arm is located is smaller than the thickness of the edge of the opening portion along a direction perpendicular to the connecting side wall where the elastic arm is located.

7. The display module according to any one of claims 1 to 6, characterized in that: The backlight source further comprises a reflective sheet located on a side of the carrying portion away from the shielding plate. The reflective sheet, the light guide plate and the optical film are arranged in sequence along a direction from the bottom plate to the carrying portion and are disposed between the bottom plate and the carrying portion.

8. The display module according to claim 7, characterized in that: It also includes a display panel located between the carrying portion and the shielding plate, the display panel is provided with a main flexible circuit board, the main flexible circuit board includes a folded portion folded back and attached to a side of the bottom plate away from the carrying portion, and a main connector is provided on a side of the folded portion away from the bottom plate; The display module also includes a shielding back cover located on the side of the folded portion away from the bottom plate, the shielding back cover is provided with an escape opening in the area opposite to the main connector, the escape opening is provided with an inclined portion at the edge opposite to the wiring side of the main connector, and the inclined portion extends to the vicinity of the main connector and abuts against the bottom plate.

9. A display device, characterized in that: Comprising a display module as described in any one of claims 1-8.

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