Backlight module structure with electromagnetic touch screen

Abstract

The utility model provides a backlight module structure with an electromagnetic touch screen, which solves the technical problems that in the existing module with an electromagnetic screen, an EMR interface of an LED (light-emitting diode) backlight module with an EMR is a whole, the size of a single abdicating structure is larger when a back plate is designed, and the overall strength of the back plate is influenced, and can be widely applied to the field of screen display. The backlight module specifically comprises a metal back plate, an electromagnetic touch screen, a reflector plate, a light guide plate, an optical film and a liquid crystal panel are sequentially arranged on the metal back plate, a plastic middle frame is further arranged on a frame of the metal back plate in a matched mode and wraps frames of a plurality of backlight modules, and a plurality of EMR interfaces are formed in the electromagnetic touch screen. A plurality of notches are formed in the side edge of the plastic middle frame, and the EMR interfaces extend out through the notches; the positions, located on the EMR interfaces, of the metal back plate are provided with bosses extending outwards, the bosses give way for the EMR interfaces, the edges of the bosses are arranged to be dead pressing edges, and the EMR interfaces are prevented from being cut.

Description

Technical Field

[0001] The utility model belongs to the technical field of screen display, and particularly relates to a backlight module structure with an electromagnetic touch screen. Background Art

[0002] In the existing electromagnetic screen modules, EMR is generally composed of pure FFC. A plane is reserved at the bottom of the backplane. The Z-direction design leaves enough space for optical materials to realize the backlight function of loading EMR. The backplane, plastic middle frame, EMR, and backlight are matched with commonly used optical materials and tapes to form a complete set of LED backlight modules containing EMR. Moreover, the EMR interface is a whole. When designing the backplane, the volume of a single giving structure will be relatively large, which will affect the overall strength of the backplane. 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 structure with an electromagnetic touch screen.

[0004] To this end, the utility model provides a backlight module structure with an electromagnetic touch screen, including a metal back plate, on which an electromagnetic touch screen, a reflective sheet, a light guide plate, an optical film, and a liquid crystal panel are sequentially arranged, a plastic middle frame is also arranged on the frame of the metal back plate, the plastic middle frame wraps the frames of multiple backlight modules, multiple EMR interfaces are arranged on the electromagnetic touch screen, multiple slots are opened on the side of the plastic middle frame, and the EMR interfaces extend through the slots; outwardly extending bosses are arranged at the positions of the multiple EMR interfaces on the metal back plate, and the bosses make way for the EMR interfaces.

[0005] Furthermore, the edge of the boss is configured as a dead edge to prevent the EMR interface from being cut.

[0006] Furthermore, a Cover plate is arranged outside the ground side of the plastic middle frame, and the Cover plate is U-shaped and wrapped around the ground side of the plastic middle frame.

[0007] Furthermore, mounting holes are provided at both ends and in the middle of the Cover plate, and a flanged lug is also provided in the middle of the Cover plate.

[0008] Furthermore, a plastic middle frame rib is provided on the ground side of the plastic middle frame and matched with the flanged lug, so as to limit the Cover plate.

[0009] Furthermore, an LED light strip is arranged inside the ground side of the metal back plate, and a notch is opened on the ground side of the metal back plate for exposing the light strip plug.

[0010] The utility model provides a backlight module structure with an electromagnetic touch screen, which has the following beneficial effects:

[0011] 1. Aiming at low-cost EMR (FR4+FFC banding) structure matching;

[0012] 2. The three-section opening at the side of the back panel is conducive to maintaining the strength of the back panel;

[0013] 3. The back panel of the EMR banding position has a partial half reduction to make room, and has a pressed edge to prevent FFC from cutting. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a front structural diagram of the utility model;

[0015] Figure 2 It is a back structural diagram of the utility model;

[0016] Figure 3 It is a cross-sectional view of the utility model;

[0017] Figure 4 This is a structural diagram of the utility model after removing the metal back plate at the lower left corner of the back;

[0018] Figure 5 It is a schematic diagram of the cooperation between the ground side of the plastic middle frame and the middle of the cover plate of the utility model;

[0019] Figure 6 It is a partial structural diagram of the EMR structural position of the utility model;

[0020] Markings in the figure: 1. LCD panel; 2. Metal back plate; 3. Reflector; 4. Light guide plate; 5. Optical film; 6. LED light strip; 7. Plastic middle frame; 8. EMR interface; 9. Boss; 10. Pressed edge; 11. Light strip plug; 12. Electromagnetic touch screen; 13. Cover plate; 14. Mounting hole; 15. Flanged lug; 16. Plastic middle frame ribs. DETAILED DESCRIPTION

[0021] 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.

[0022] like Figure 1-3As shown, the utility model provides a backlight module structure with an electromagnetic touch screen, including a metal back plate 2, on which an electromagnetic touch screen 12, a reflective sheet 3, a light guide plate 4, an optical film 5, and a liquid crystal panel 1 are sequentially arranged, and a plastic middle frame 7 is also arranged on the frame of the metal back plate 2, and the plastic middle frame 7 wraps the frames of multiple backlight modules. Three EMR interfaces 8 are arranged on the electromagnetic touch screen 12, and three notches are opened on the side of the plastic middle frame 7, and the EMR interfaces 8 extend through the notches. Outwardly extending bosses 9 are arranged at the positions of the three EMR interfaces 8 on the metal back plate 2, and the bosses 9 make way for the EMR interfaces 8. Compared with one EMR interface 8 in the traditional module design, dividing the fixed width EMR interface 8 into three narrower EMR interfaces 8 can reduce the volume of a single boss 9 and enhance the overall structural strength of the metal back plate 2.

[0023] It should be noted that although the structure of the boss 9 is stamped integrally with the metal back plate 2, the boss 9, as an additional structure, is not located on the same plane as the metal back plate 2, and the boss 9 is thinner than other parts of the metal back plate 2. If the boss 9 itself is larger in volume, it is more likely to deform when subjected to the same pressure, thereby affecting the overall strength of the metal back plate 2.

[0024] like Figure 6 As shown, the edge of the boss 9 is set as a dead edge 10 to prevent the EMR interface 8 from being cut and affecting the normal use of the backlight module. Figure 4 5, a Cover plate 13 is disposed outside the ground side of the plastic middle frame 7. The Cover plate 13 is U-shaped and wrapped around the ground side of the plastic middle frame 7. Mounting holes 14 are provided at both ends and the middle of the Cover plate 13, and a flanged lug 15 is also provided in the middle of the Cover plate 13. A plastic middle frame rib 16 is provided on the ground side of the plastic middle frame 7 to match the flanged lug 15, and is used to limit the Cover plate 13.

[0025] like Figure 4 As shown, an LED light strip 6 is arranged inside the ground side of the metal back plate 2 , and a notch is opened on the ground side of the metal back plate 2 for exposing the light strip plug 11 .

[0026] 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.

[0027] 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 structure with an electromagnetic touch screen, comprising a metal back plate, on which an electromagnetic touch screen, a reflective sheet, a light guide plate, an optical film, and a liquid crystal panel are sequentially arranged, and a plastic middle frame is also arranged on the frame of the metal back plate, and the plastic middle frame wraps the frames of multiple backlight modules, characterized in that: There are multiple EMR interfaces on the electromagnetic touch screen, and multiple slots are opened on the side of the plastic middle frame, through which the EMR interfaces extend. The metal back panel is provided with outwardly extending bosses at the positions of the multiple EMR interfaces, which make way for the EMR interfaces.

2. The backlight module structure with an electromagnetic touch screen according to claim 1, characterized in that: The edge of the boss is set as a dead edge to prevent cutting the EMR interface.

3. A backlight module structure with an electromagnetic touch screen according to claim 1 or 2, characterized in that: A cover plate is arranged outside the ground side of the plastic middle frame. The cover plate is U-shaped and wrapped around the ground side of the plastic middle frame.

4. The backlight module structure with an electromagnetic touch screen according to claim 3, characterized in that: Mounting holes are provided at both ends and the middle of the Cover plate, and a flanged lug is also provided in the middle of the Cover plate.

5. The backlight module structure with electromagnetic touch screen according to claim 4, characterized in that: The ground side of the plastic middle frame is matched with the flanged lugs and is provided with plastic middle frame ribs for limiting the Cover plate.

6. The backlight module structure with an electromagnetic touch screen according to claim 3, characterized in that: An LED light strip is arranged inside the ground side of the metal back plate, and a notch is opened on the ground side of the metal back plate to expose the light strip plug.

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