Non-deformable backlight module Cover structure

Abstract

The utility model provides a backlight module Cover structure not prone to deformation and solves the problems that due to the fact that an existing planar liquid crystal module is limited by a U-shaped Cover structure, the lower edge of a Cover does not make contact with a metal back plate during locking, the Cover is deformed and upwarped after locking, a front cover of a whole machine installed in the later period can be jacked up, and the whole machine is not prone to deformation. The liquid crystal display module can be widely applied to the field of liquid crystal display modules. A liquid crystal panel is arranged in the metal backboard, a PCBA board is arranged on the back face of the bottom of the metal backboard, a matched middle frame is arranged on a frame of the metal backboard, and a second mounting hole is formed in a lower frame of the metal backboard and used for secondarily fastening the Cover board. Second assembling holes are formed in the positions, corresponding to the second mounting holes, of the Cover plate, and inward folding parts are arranged at the positions, located in the second assembling holes, of the Cover plate and used for bearing pressure generated when screws are screwed.

Description

Technical Field

[0001] The utility model belongs to the technical field of liquid crystal display modules, and particularly relates to a backlight module Cover structure that is not easily deformed. Background Art

[0002] The existing flat LCD module has a separate metal part to protect the light-incoming side. The metal cover protects the COF and also covers the PCBA on the back. When a U-shaped cover plate is used, there will be obvious disadvantages. The cover is assembled with the back panel frame by screw locking. Due to the structural limitations of the cover, the lower edge of the cover has no contact with the metal back panel during locking, causing the cover to deform and warp after locking, which will lift up the front cover of the whole machine installed later, thereby indirectly affecting the size of the joint between the LCD panel and the front cover of the whole machine. Utility Model Content

[0003] The purpose of the utility model is to solve the deficiencies of the above-mentioned technology and provide a backlight module cover structure that is not easily deformed.

[0004] To this end, the utility model provides a backlight module Cover structure that is not easily deformed, including a metal back plate, a liquid crystal panel is arranged in the metal back plate, a PCBA board is arranged on the bottom back of the metal back plate, a matching middle frame is arranged on the metal back plate frame, and a second mounting hole is arranged on the lower frame of the metal back plate for secondary fastening of the Cover plate; a second assembly hole is arranged at a position corresponding to the second mounting hole on the Cover plate, and an inner folding portion is arranged on the Cover plate at the position of the second assembly hole for bearing the pressure when the screw is tightened.

[0005] Furthermore, a plurality of U-shaped COF boards are arranged at the bottom of the metal back plate, and the lower frame of the middle frame and the lower frame of the PCBA board are both located inside the U-shaped space of the COF board, and the COF board is used to drive the liquid crystal panel; a U-shaped Cover board is also arranged at the bottom of the metal back plate, and the U-shaped space of the Cover board completely wraps the lower frame of the metal back plate and the structure on the lower frame to protect the COF board.

[0006] Furthermore, the two bottom corners of the lower frame of the metal back plate are each provided with a first mounting hole, and the first mounting hole is a threaded hole protruding toward one side of the Cover plate; the first assembly hole and the second assembly hole protruding toward one side of the middle frame are respectively provided on the Cover plate at positions corresponding to the first mounting hole and the second mounting hole.

[0007] Furthermore, a plurality of back panel protrusions are provided on the four frames of the metal back panel, a first card slot cooperating with the back panel protrusions is provided on the lower frame of the middle frame, and a second card slot cooperating with the back panel protrusions is provided inside the left and right frames and the upper frame of the middle frame.

[0008] Furthermore, two bottom corners of the lower frame of the middle frame are also provided with hook grooves for installing decorative strips; guide blocks are provided in the hook grooves, and an inclined surface is provided on the guide blocks.

[0009] Furthermore, an LED light strip slot is provided on the left bottom corner of the back side of the metal back plate for connecting an LED light strip connector.

[0010] The utility model provides a backlight module cover structure that is not easily deformed, which has the following beneficial effects:

[0011] By providing the inner folding portion, the cover plate can withstand the tightening pressure of the screws on the cover plate when the cover plate is screwed to the metal back plate, thereby improving the structural strength of the cover plate, preventing the cover plate from being deformed by pressure, ensuring the flatness of the cover plate, and making the joint between the LCD panel and the front cover of the whole machine more uniform when the front cover of the whole machine is assembled later.

[0012] The protection function of multiple sheet metal parts and plastic parts can be realized through only one cover plate, without the need for multiple sheet metal parts. The tediousness of the operation is reduced, the number of screws is reduced, and more buckles are used for matching; the number of sheet metal parts is reduced, the compatibility of the cover plate is improved, and multiple LCD glasses can be used universally, and the model derivation method is simple. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a front structural diagram of the utility model;

[0014] Figure 2 yes Figure 1 The enlarged view of point A in the middle;

[0015] Figure 3 It is a back structural diagram of the utility model;

[0016] Figure 4 yes Figure 3 The enlarged view of point B in the middle;

[0017] Figure 5 It is a schematic diagram of the positional relationship between the first mounting hole and the first assembly hole of the utility model;

[0018] Figure 6 It is a schematic diagram of the positional relationship between the second mounting hole and the second assembly hole of the utility model;

[0019] Figure 7It is a structural diagram of the second mounting hole portion of the Cover plate of the utility model;

[0020] Figure 8 It is a structural diagram of the lower frame of the metal back plate of the utility model;

[0021] Fig. 9 It is a structural diagram of the side of the middle frame of the utility model;

[0022] Markings in the figure: 1. LCD panel; 2. Metal back plate; 3. Middle frame; 4. Cover plate; 5. PCBA board; 6. COF board; 7. Back plate bump; 8. First card slot; 9. Second card slot; 10. First mounting hole; 11. Second mounting hole; 12. Inner fold; 13. Barb groove; 14. First assembly hole; 15. Second assembly hole; 16. Guide block; 17. LED light strip card slot. DETAILED DESCRIPTION

[0023] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments to help understand the content of the present invention. The methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercial products unless otherwise specified.

[0024] like Figure 1-4 As shown, the utility model provides a backlight module Cover structure that is not easily deformed, including a metal back plate 2, a liquid crystal panel 1 is arranged inside the metal back plate 2, a PCBA board 5 is arranged on the bottom back of the metal back plate 2, and a matching middle frame 3 is arranged on the frame of the metal back plate 2; a plurality of U-shaped COF boards 6 are arranged at the bottom of the metal back plate 2, and the lower frame of the middle frame 3 and the lower frame of the PCBA board 5 are both located inside the U-shaped space of the COF board 6, and the COF board 6 is used to drive the liquid crystal panel 1. A U-shaped Cover board 4 is also arranged at the bottom of the metal back plate 2, and the U-shaped space of the Cover board 4 completely wraps the lower frame of the metal back plate 2 and the structure on the lower frame, thereby protecting the COF board 6.

[0025] like Figure 5-7As shown, the two bottom corners of the lower frame of the metal back plate 2 are both provided with a first mounting hole 10, and the first mounting hole 10 is a threaded hole protruding toward one side of the Cover plate 4. The lower frame of the metal back plate 2 is also provided with a second mounting hole 11 for secondary fastening of the Cover plate 4. The Cover plate 4 is provided with a first assembly hole 14 and a second assembly hole 15 protruding toward one side of the middle frame 3 at positions corresponding to the first mounting hole 10 and the second mounting hole 11, respectively. When the Cover plate 4 and the metal back plate 2 are installed with screws, the head of the screw can be left in the protrusion, and the surface of the Cover plate 4 is smooth. The Cover plate 4 is provided with an inner folding portion 12 at the position of the second assembly hole 15. By providing the inner folding portion 12, when the screw is tightened in the second mounting hole 11, the inner folding portion 12 can withstand the pressure of tightening the screw, thereby preventing the Cover plate 4 from being deformed by pressure.

[0026] like Figure 8 , as shown in FIG9 , a plurality of back plate protrusions 7 are provided on the four frames of the metal back plate 2, a first card slot 8 matching with the back plate protrusions 7 is provided on the lower frame of the middle frame 3, and a second card slot 9 matching with the back plate protrusions 7 is provided inside the left and right frames and the upper frame of the middle frame 3. When in use, the middle frame 3 is snapped onto the metal back plate 2.

[0027] like Figure 5 As shown in FIG. 7 , two bottom corners of the lower frame of the middle frame 3 are also provided with hook grooves 13 for installing decorative strips; guide blocks 16 are provided in the hook grooves 13, and an inclined surface is provided on the guide blocks 16. The guide blocks 16 can provide guidance when the decorative strips are installed on the middle frame 3, making it more convenient for the decorative strips to be snapped onto the middle frame 3. Figure 4 As shown, an LED light bar slot 17 is also provided on the left bottom corner of the back side of the metal back plate 2 for connecting the LED light bar connector.

[0028] In the description of the present invention, it should be understood that the terms "left", "right", "up", "down", "top", "bottom", "front", "back", "inside", "outside", "back", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] However, what is described above is only a specific embodiment of the present invention and should not be used to limit the scope of implementation of the present invention. Therefore, the replacement of equivalent components, or equivalent changes and modifications made according to the scope of protection of the patent of the present invention should still fall within the scope covered by the claims of the present invention.

Claims

1. A backlight module cover structure that is not easily deformed, comprising a metal back plate, a liquid crystal panel is arranged inside the metal back plate, a PCBA board is arranged on the bottom back of the metal back plate, and a matching middle frame is arranged on the frame of the metal back plate, characterized in that: A second mounting hole is provided on the lower frame of the metal back plate for secondary fastening of the Cover plate; a second assembly hole is provided on the Cover plate at a position corresponding to the second mounting hole, and an inward folding portion is provided on the Cover plate at the position of the second assembly hole for bearing the pressure when the screw is tightened.

2. The non-deformable backlight module cover structure according to claim 1, characterized in that: A plurality of U-shaped COF boards are arranged at the bottom of the metal back plate, and the lower frame of the middle frame and the lower frame of the PCBA board are both located inside the U-shaped space of the COF board, and the COF board is used to drive the liquid crystal panel; a U-shaped Cover board is also arranged at the bottom of the metal back plate, and the U-shaped space of the Cover board completely wraps the lower frame of the metal back plate and the structure on the lower frame to protect the COF board.

3. A non-deformable backlight module cover structure according to claim 1 or 2, characterized in that: The two bottom corners of the lower frame of the metal back plate are each provided with a first mounting hole, and the first mounting hole is a threaded hole protruding toward one side of the Cover plate; the first assembly hole and the second assembly hole protruding toward one side of the middle frame are respectively provided at positions on the Cover plate corresponding to the first mounting hole and the second mounting hole.

4. The non-deformable backlight module cover structure according to claim 3, characterized in that: The four frames of the metal back plate are provided with a plurality of back plate protrusions, the lower frame of the middle frame is provided with a first card slot cooperating with the back plate protrusions; the left and right frames and the upper frame of the middle frame are provided with a second card slot cooperating with the back plate protrusions.

5. The non-deformable backlight module cover structure according to claim 4, characterized in that: The two bottom corners of the lower frame of the middle frame are also provided with hook grooves for installing decorative strips; guide blocks are provided in the hook grooves, and an inclined surface is provided on the guide blocks.

6. The non-deformable backlight module cover structure according to claim 5, characterized in that: An LED light strip slot is also provided on the left bottom corner of the back side of the metal back plate for connecting the LED light strip connector.

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