Display module

Abstract

The utility model discloses a display module, including optical film group, apron, liquid crystal screen and backplate, optical film group, liquid crystal screen and apron from below to above are stacked in proper order setting, the backplate is integrative forming, the backplate is from below to above in proper order with first installation groove, second installation groove and third installation groove, first installation groove, second installation groove and third installation groove are ladder type layout, optical film group is installed in first installation groove, liquid crystal screen is installed in second installation groove, apron is installed in third installation groove end in. The utility model has reduced the assembly step of display module, makes the assembly of display module more convenient, saves the manual cost, and also reduced material, saves material cost, in the, the utility model has promoted the stability of display module overall structure.

Description

Technical Field

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

[0002] Currently, in common display devices, the display module typically includes a back panel, a mid-frame, a display screen, and an optical film assembly. The back panel and mid-frame together house and mount the display screen and optical film assembly. Furthermore, the back panel and mid-frame usually require a snap-fit ​​connection, necessitating an additional layer of light-shielding tape for edge protection. Clearly, common display devices suffer from the following drawbacks:

[0003] (1) There are many parts and the assembly steps are complicated, making product assembly inconvenient;

[0004] (2) The back panel and the middle frame are easily separated by stress or heat, resulting in poor structural stability.

[0005] Based on this, the present invention proposes a display module to solve the problems mentioned above. Utility Model Content

[0006] The purpose of this invention is to provide a display module that reduces component complexity while improving structural stability.

[0007] To solve the above-mentioned technical problems, this utility model provides a display module, including an optical film assembly, a cover plate, a liquid crystal screen, and a back plate:

[0008] The back plate is integrally formed, and the back plate has a first mounting groove, a second mounting groove and a third mounting groove arranged sequentially from bottom to top. The first mounting groove, the second mounting groove and the third mounting groove are arranged in a stepped layout.

[0009] The optical film assembly is installed in the first mounting slot;

[0010] The LCD screen is installed in the second mounting slot;

[0011] The cover plate is installed inside the third mounting slot.

[0012] Furthermore, a light-shielding film is installed on the bottom surface of the LCD screen, and the edge of the light-shielding film is overlapped and fixed to the end face of the second mounting groove.

[0013] Furthermore, the bottom surface of the backplate is integrally formed with multiple heat dissipation fins.

[0014] Furthermore, the upper end of the third mounting groove protrudes from or is flush with the top surface of the cover plate.

[0015] Furthermore, the bottom edge of the cover plate is overlapped and fixed to the end face of the third mounting groove.

[0016] Furthermore, an adhesive layer is provided on the bottom edge of the cover plate.

[0017] Furthermore, the back panel has rounded chamfers at its corners, and the lower end of the back panel sidewall is inclined.

[0018] Furthermore, the bottom surface of the back plate is integrally formed with multiple screw posts.

[0019] Furthermore, the side wall of the LCD screen is provided with a positioning block, and the side wall of the second mounting groove is provided with a positioning groove that matches the positioning block.

[0020] Furthermore, the optical film assembly includes a reflective sheet, a light guide plate, a diffuser, a brightness enhancement film, and a reflective brightness enhancement film;

[0021] The reflective sheet, light guide plate, diffuser, brightness enhancement sheet, and reflective brightness enhancement sheet are stacked sequentially from bottom to top.

[0022] Compared with the prior art, the present invention has at least the following beneficial effects:

[0023] The display module provided by this utility model, through the setting of the back plate formed by one-piece die casting, can eliminate the use of the middle frame and edge blocking light-shielding tape, thereby reducing the assembly steps of the display module, making the assembly of the display module more convenient, saving labor costs, and also reducing materials, thus saving material costs; in addition, the one-piece die casting back plate has better structural stability compared with the split snap-fit ​​splicing parts.

[0024] Furthermore, the bottom surface of the backplate is integrally molded with heat dissipation fins, which can effectively conduct heat directly to the outside and improve heat dissipation efficiency. Attached Figure Description

[0025] Figure 1 This is a cross-sectional schematic diagram of a display module in the prior art;

[0026] Figure 2 This is a cross-sectional schematic diagram of the display module in an embodiment of the present utility model;

[0027] Figure 3 This is an exploded view of the overall structure of the display module in an embodiment of this utility model;

[0028] Figure 4 This is a schematic diagram of the bottom surface of the back plate in an embodiment of this utility model.

[0029] In the diagram: 1. Optical film assembly; 10. Reflective sheet; 11. Light guide plate; 12. Diffuser; 13. Brightness enhancement sheet; 14. Reflective brightness enhancement sheet; 2. LCD screen; 20. Positioning block; 3. Cover plate; 4. Back plate; 40. First mounting slot; 41. Second mounting slot; 410. Positioning slot; 42. Third mounting slot; 43. Heat dissipation fins; 44. Screw post; 5. Light-shielding film; 6. Adhesive layer. Detailed Implementation

[0030] The display module of this utility model will now be described in more detail with reference to the accompanying drawings, which illustrate preferred embodiments of this utility model. It should be understood that those skilled in the art can modify the utility model described herein while still achieving its advantageous effects. Therefore, the following description should be understood as being of general knowledge to those skilled in the art and is not intended to limit the utility model.

[0031] The present invention will be described in more detail below by way of example with reference to the accompanying drawings. The advantages and features of the present invention will become clearer from the following description. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the present invention.

[0032] like Figure 1 This is a display module in the prior art, mainly including an optical film group a, a liquid crystal screen b, a cover plate c, a metal back plate d, and a middle frame e.

[0033] Among them, the optical film group a, the liquid crystal screen b and the cover plate c are stacked from bottom to top to form a display stacking structure. The metal back plate d and the middle frame e constitute the outer combination frame. The back plate d and the middle frame e are connected by a snap-fit ​​structure. In order to reduce light leakage, edge-sealing light-shielding tape f is also provided at the joint between the back plate d and the middle frame e.

[0034] The above-mentioned structure has a large number of components, and the split frame structure formed by the metal back plate d and the middle frame e is easily forced to separate under stress or heat, resulting in poor structural stability.

[0035] like Figure 2 As shown in the figure, this utility model embodiment proposes a display module, including an optical film group 1, a liquid crystal screen 2, a cover plate 3, and a back plate 4.

[0036] The optical film group 1, the liquid crystal screen 2, and the cover plate 3 are stacked sequentially from bottom to top.

[0037] The back plate 4 is integrally formed, and the back plate 4 has a first mounting groove 40, a second mounting groove 41 and a third mounting groove 42 arranged from bottom to top. The first mounting groove 40, the second mounting groove 41 and the third mounting groove 42 are arranged in a stepped layout.

[0038] The optical film assembly 1 is installed in the first mounting slot 40; the liquid crystal screen 2 is installed in the second mounting slot 41; and the cover plate 3 is installed in the third mounting slot 42.

[0039] In this embodiment, the back plate 4 can be integrally die-cast using a die-casting machine, forming a stepped layout of the first mounting groove 40, the second mounting groove 41, and the third mounting groove 42 within its main body. Through the first mounting groove 40, the second mounting groove 41, and the third mounting groove 42, a "layered nesting" installation method is provided for the optical film group 1, the liquid crystal screen 2, and the cover plate 3, forming a complete display module.

[0040] Specifically: the optical film assembly 1 is embedded in the deepest first mounting groove 40; a light-shielding film 5 is installed on the bottom surface of the LCD screen 2, and the edge of the light-shielding film 5 is overlapped and fixed on the end face of the second mounting groove 41 to form a "floating support" to reduce the pressure on the optical film assembly 1. At the same time, the light-shielding film 5 forms a light-shielding barrier to reduce the risk of light leakage; the edge of the cover plate 3 overlaps with the end face of the third mounting groove 42 to form a "surface-to-surface fit" to ensure sealing.

[0041] As can be seen from the above, the display module provided in this embodiment, through the setting of the integrated die-cast back plate 4, can eliminate the use of the middle frame and edge-sealing light-blocking tape, thereby reducing the assembly steps of the display module, making the assembly of the display module more convenient, saving labor costs, and also reducing materials, thus saving material costs; in addition, the integrated die-cast back plate 4 has better structural strength than the split snap-fit ​​splicing parts, that is, it improves the overall structural stability of the display module.

[0042] In the above embodiment, an adhesive layer 6 is provided on the bottom edge of the cover plate 3.

[0043] The specific adhesive layer 6 uses foam adhesive or glue to ensure a stable connection between the cover plate 3 and the back plate 4, while also ensuring good sealing.

[0044] In the above embodiment, the four corners of the back plate have arc-shaped chamfers (not shown in the figure), and the lower end of the side wall of the four back plates is inclined.

[0045] The design of the curved chamfer and inclined surface ensures the stability of the die-casting process and the finished quality of the back plate 4. Specifically:

[0046] (1) Improve the filling and venting of liquid metal

[0047] Rounded corners can prevent eddies or turbulence caused by "sharp corners" during the flow of molten metal, making the melt flow more smoothly and reducing porosity defects; at the same time, the space at the rounded corners helps gas to escape, reducing the risk of gas trapped in the cavity.

[0048] (2) Optimize demolding efficiency and protect the mold and casting.

[0049] The sloping sidewall design reduces friction between the die casting and the mold cavity, making demolding smoother and preventing surface scratches on the casting.

[0050] (3) Reduce stress concentration and improve structural reliability

[0051] Rounded corners can avoid crack defects caused by stress concentration at sharp corners, while reducing the risk of corner chipping at corresponding positions in the mold cavity and extending the mold life.

[0052] In the above embodiments, in conjunction with reference to Figure 3 The optical film assembly 1 includes a reflective sheet 10, a light guide plate 11, a diffuser 12, a brightness enhancement film 13, and a reflective brightness enhancement film 14; the reflective sheet 10, the light guide plate 11, the diffuser 12, the brightness enhancement film 13, and the reflective brightness enhancement film 14 are stacked sequentially from bottom to top.

[0053] Specifically, the bottom reflective sheet 10 recovers the light leaking downward from the light guide plate 11, avoiding waste of the original light source; the light guide plate 11 converts the point / line light source into a uniform surface light source, providing basic light for the subsequent film; the diffuser 12 scatters the light emitted from the light guide plate, eliminating light spots and improving light uniformity; the brightness enhancement sheet 13 focuses the diffused light, improving the brightness in the frontal view direction; the top reflective brightness enhancement sheet 14 recovers the side-leaking light a second time and refocuses it, and under the superimposed effect, the overall brightness is further improved.

[0054] In the above embodiments, such as Figure 3 As shown, a positioning block 20 is provided on the side wall of the LCD screen 2, and a positioning groove 410 matching the positioning block 20 is provided on the side wall of the second mounting groove 41. The positioning block 20 and the positioning groove 410 are used to achieve the positioning and installation of the LCD screen 2 in the back plate 4.

[0055] In a preferred embodiment, such as Figure 4 As shown, the bottom surface of the backplate 4 is integrally formed with multiple heat dissipation fins 43.

[0056] Since the backplate 4 is integrally die-cast, and based on the flexible characteristics of integral die-casting, heat dissipation fins 43 can be flexibly set on the bottom surface of the backplate 4 to provide effective heat dissipation for the display module, thus simplifying the process.

[0057] Another advantage is that multiple screw posts 44 are integrally formed on the bottom surface of the back plate 4, which provides a foundation for the stable installation of the subsequent display module.

[0058] In an optional embodiment, the upper end of the third mounting groove 42 protrudes or is flush with the top surface of the cover plate 3.

[0059] By setting the upper end of the third mounting groove 42 to protrude from or be flush with the top surface of the cover plate 3, all-round protection is provided for the side of the cover plate 3, thereby reducing the risk of the cover plate 3 breaking due to lateral impact.

[0060] In summary, compared with the prior art, this utility model has at least the following advantages:

[0061] The display module provided by this utility model can eliminate the use of the middle frame and edge-sealing light-blocking tape by setting an integral die-cast back plate, thereby reducing the assembly steps of the display module, making the assembly of the display module more convenient, saving labor costs, and also reducing materials, thus saving material costs; in addition, the integral die-cast back plate has better structural strength and stability compared with the split snap-fit ​​splicing parts.

[0062] Furthermore, the bottom surface of the backplate is integrally molded with heat dissipation fins, which can effectively conduct heat directly to the outside and improve heat dissipation efficiency.

[0063] Obviously, those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this utility model and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A display module, characterized in that, Includes optical film assembly, cover plate, LCD screen, and back panel: The back plate is integrally formed, and the back plate has a first mounting groove, a second mounting groove and a third mounting groove arranged sequentially from bottom to top. The first mounting groove, the second mounting groove and the third mounting groove are arranged in a stepped layout. The optical film assembly is installed in the first mounting slot; The LCD screen is installed in the second mounting slot; The cover plate is installed inside the third mounting slot.

2. The display module as described in claim 1, characterized in that, A light-shielding film is installed on the bottom surface of the LCD screen, and the edge of the light-shielding film is overlapped and fixed to the end face of the second mounting groove.

3. The display module as described in claim 1, characterized in that, The bottom surface of the backplate is integrally formed with multiple heat dissipation fins.

4. The display module as described in claim 1, characterized in that, The upper end of the third mounting groove protrudes or is flush with the top surface of the cover plate.

5. The display module as described in claim 1, characterized in that, The bottom edge of the cover plate overlaps and is fixed to the end face of the third mounting groove.

6. The display module as described in claim 5, characterized in that, An adhesive layer is provided on the bottom edge of the cover plate.

7. The display module as described in claim 1, characterized in that, The back panel has rounded chamfers at its corners, and the lower end of the back panel sidewall is inclined.

8. The display module as described in claim 1, characterized in that, The bottom surface of the back plate is integrally formed and has multiple screw posts.

9. The display module as described in claim 1, characterized in that, The side wall of the LCD screen is provided with a positioning block, and the side wall of the second mounting groove is provided with a positioning groove that matches the positioning block.

10. The display module as described in claim 1, characterized in that, The optical film assembly includes a reflective sheet, a light guide plate, a diffuser, a brightness enhancement film, and a reflective brightness enhancement film; The reflective sheet, light guide plate, diffuser, brightness enhancement sheet, and reflective brightness enhancement sheet are stacked sequentially from bottom to top.

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