Display module capable of preventing poor contact

Abstract

The utility model discloses a display module capable of preventing poor contact. The display module is provided with a backlight display assembly, an insulating film, a main screen FPC board and a conductive double-sided bonding layer. The backlight display assembly comprises a backlight FPC board and a metal frame, the backlight FPC board comprises a first positive electrode copper disc and a first negative electrode copper disc, the insulating film covers the backlight FPC board, and openings are formed in the positions, at the first positive electrode copper disc and the first negative electrode copper disc, of the insulating film. The first positive electrode copper disc and the first negative electrode copper disc extend into the two conductive openings respectively, so that the backlight FPC board does not need to extend out independently, and the backlight FPC board is prevented from being broken. The main screen FPC board comprises a second positive electrode and a second negative electrode, the first positive electrode copper disc is correspondingly bonded and electrically connected with the second positive electrode through a double-sided bonding layer, and the first negative electrode copper disc is correspondingly bonded and electrically connected with the second negative electrode through a double-sided bonding layer, so that the main screen FPC board and the backlight FPC board are electrically connected by reducing welding procedures, the problems of open circuit and short circuit of welding are solved, and the production efficiency is improved. Therefore, the main screen FPC board and the backlight FPC board are electrically connected stably.

Description

Technical Field

[0001] The utility model relates to the field of display screens, in particular to a display module capable of preventing poor contact. Background Art

[0002] In the prior art, the backlight FPC and the main screen FPC in the display screen are connected by welding, and then connected to the mainboard BTB, and the LED lamp in the backlight is powered by the mainboard to emit light. However, the backlight FPC is independently led out and electrically connected to the main screen FPC, which is prone to breakage, and the electrical connection between the backlight FPC and the main screen FPC needs to be completed by the operation of the soldering station, which is prone to open circuit and short circuit, resulting in the appearance of defective products. Utility Model Content

[0003] The purpose of the utility model is to overcome the shortcomings of the prior art and provide a display module that prevents poor contact.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A display module for preventing poor contact, comprising: a backlight display assembly, an insulating film, a main screen FPC board and a conductive double-sided adhesive layer; the backlight display assembly comprises a backlight FPC board and a metal frame, the backlight FPC board is attached to the bottom of the metal frame, the backlight FPC board comprises a first positive copper disk and a first negative copper disk, the insulating film covers the backlight FPC board, the insulating film is provided with openings at the first positive copper disk and the first negative copper disk, the metal frame is provided with two conductive openings, the first positive copper disk and the first negative copper disk extend into the two conductive openings respectively, the main screen FPC board comprises a second positive electrode and a second negative electrode, the first positive copper disk is correspondingly bonded and electrically connected to the second positive electrode through the double-sided adhesive layer, and the first negative copper disk is correspondingly bonded and electrically connected to the second negative electrode through the double-sided adhesive layer.

[0006] In one embodiment, the conductive opening is a cube structure.

[0007] In one embodiment, the length of the conductive opening is 5 mm to 6 mm.

[0008] In one embodiment, a plurality of through holes are disposed on the first positive copper disk and the first negative copper disk.

[0009] In one embodiment, copper dots are provided on the first positive copper disk and the first negative copper disk, and the length of the copper dots is 2.8 mm and the width is 0.6 mm.

[0010] In one embodiment, the backlight FPC board and the main screen FPC board are both provided with a component area, and the backlight FPC board and the main screen FPC board are provided with a steel sheet at the back of the component area.

[0011] In one embodiment, the metal frame is an iron frame.

[0012] In one of the embodiments, the backlight display assembly also includes a cover plate, a display screen, a light source assembly and a light processing film layer assembly; the display screen is arranged in the light processing film layer assembly, the light source assembly is welded on the backlight FPC board, the light processing film layer assembly, the display screen and the backlight FPC board are jointly arranged in the metal frame, the cover plate is covered on top of the metal frame, and the main screen FPC board is connected to one side of the display screen.

[0013] In one embodiment, the light source assembly is an LED lamp.

[0014] In one embodiment, the display screen is an LCD liquid crystal display.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The display module for preventing poor contact of the utility model is provided with a backlight display assembly, an insulating film, a main screen FPC board and a conductive double-sided adhesive layer. The backlight display assembly includes a backlight FPC board and a metal frame, the backlight FPC board includes a first positive copper disk and a first negative copper disk, the insulating film covers the backlight FPC board, the insulating film has openings at the first positive copper disk and the first negative copper disk, and the insulating film makes the backlight FPC board and the metal frame non-conductive. Two conductive openings are provided on the metal frame, and the first positive copper disk and the first negative copper disk extend into the two conductive openings respectively, so there is no need to extend the backlight FPC board separately, thereby avoiding the backlight FPC board from breaking. The main screen FPC board includes a second positive electrode and a second negative electrode. The first positive copper disk is bonded and electrically connected to the second positive electrode via a double-sided adhesive layer. The first negative copper disk is bonded and electrically connected to the second negative electrode via a double-sided adhesive layer. The double-sided adhesive layer conducts electricity in the connection direction between the first positive copper disk and the second positive electrode and in the connection direction between the first negative copper disk and the second negative electrode, so that the main screen FPC board and the backlight FPC board can be electrically connected by reducing the welding process, solving the problems of welding open circuit and short circuit, and making the main screen FPC board and the backlight FPC board stably electrically connected. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required for use in the embodiments are briefly introduced below.

[0018] Figure 1This is a schematic diagram of the structure of the first positive electrode copper disk and the second positive electrode in one embodiment of the utility model;

[0019] Figure 2 It is a partial structural schematic diagram of a display module for preventing poor contact in one embodiment of the utility model;

[0020] Figure 3 It is a partial structural schematic diagram of a display module for preventing poor contact in one embodiment of the utility model;

[0021] Figure 4 for Figure 3 Schematic diagram of the partial structure of the first positive electrode copper disk.

[0022] Reference numerals:

[0023] Main screen FPC board 10, backlight FPC board 11, first positive copper disk 111, first negative copper disk 112, through hole 113, metal frame 12, double-sided adhesive layer 20, cover plate 30, display screen 31, light source assembly 32, light processing film layer assembly 33. DETAILED DESCRIPTION

[0024] In order to facilitate the understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings.

[0025] This application proposes a display module to prevent poor contact. Figure 1 , Figure 2 and Figure 3, including a backlight display assembly, an insulating film, a main screen FPC board 10 and a conductive double-sided adhesive layer 20. The backlight display assembly includes a backlight FPC board 11 and a metal frame 12. The backlight FPC board 11 is attached to the bottom of the metal frame 12. The backlight FPC board 11 includes a first positive copper disk 111 and a first negative copper disk 112. The insulating film covers the backlight FPC board 11. The insulating film has openings at the first positive copper disk 111 and the first negative copper disk 112. The insulating film makes the backlight FPC board 11 and the metal frame 12 non-conductive. Two conductive openings are provided on the metal frame 12. The first positive copper disk 111 and the first negative copper disk 112 extend into the two conductive openings respectively, so there is no need to extend the backlight FPC board 11 separately to electrically connect with the main screen FPC board 10, thereby avoiding the backlight FPC board 11 from breaking. The main screen FPC board 10 includes a second positive electrode and a second negative electrode, the first positive copper disc 111 is bonded and electrically connected to the second positive electrode via a double-sided adhesive layer 20, the first negative copper disc 112 is bonded and electrically connected to the second negative electrode via a double-sided adhesive layer 20, and the double-sided adhesive layer 20 is conductive in the connection direction between the first positive copper disc 111 and the second positive electrode and in the connection direction between the first negative copper disc 112 and the second negative electrode, so that the main screen FPC board 10 and the backlight FPC board 11 can be electrically connected by reducing the welding process, solving the problem of welding open circuit and short circuit, and making the main screen FPC board 10 and the backlight FPC board 11 stably electrically connected. Preferably, the display screen 31 is an LCD liquid crystal display.

[0026] It should be noted that the double-sided adhesive layer 20 conducts electricity in the connection direction between the first positive copper plate 111 and the second positive electrode and in the connection direction between the first negative copper plate 112 and the second negative electrode. The double-sided adhesive layer 20 is made of a conductive material, the backlight FPC board 11 and the main screen FPC board 10 are arranged in parallel, and the double-sided adhesive layer 20 conducts electricity perpendicular to the backlight FPC board 11 and the main screen FPC board 10, so that no short circuit occurs between the backlight FPC board 11 and the main screen FPC board 10.

[0027] In one embodiment, see Figure 1 and Figure 2 The conductive opening is a cubic structure, the first positive copper plate 111 and the first negative copper plate 112 are cubic structures, but the size of the conductive opening is larger than the size of the first positive copper plate 111 and the first negative copper plate 112. The second positive electrode of the main screen FPC board 10 abuts against the first positive copper plate 111, and the first negative copper plate 112 abuts against the second negative electrode, so as to facilitate the electrical connection between the main screen FPC board 10 and the backlight FPC board 11, making the electrical connection between the main screen FPC board 10 and the backlight FPC board 11 more stable. The length of the conductive opening is 5mm to 6mm. For further information, please refer to Figure 4, a plurality of through holes 113 are provided on the first positive copper plate 111 and the first negative copper plate 112. When the double-sided adhesive layer 20 is used to bond the first positive copper plate 111 and the first negative copper plate 112, the through holes 113 can lead out the air between the double-sided adhesive layer 20 and the first positive copper plate 111 and the first negative copper plate 112, so that the bonding between the two is tighter and firmer. Furthermore, a copper point is provided on the first positive copper plate 111 and the first negative copper plate 112, and the length of the copper point is 2.8 mm and the width is 0.6 mm.

[0028] In another embodiment, both the backlight FPC board 11 and the main screen FPC board 10 are provided with a component area, and components are welded in the component area. When the weight of the components reaches a certain level, since the backlight FPC board 11 and the main screen FPC board 10 are relatively soft, a steel sheet is provided at the back of the component area to support the component area to prevent the backlight FPC board 11 and the main screen FPC board 10 from breaking due to the weight of the component area. Preferably, the metal frame 12 is an iron frame. In addition, please refer to Figure 3 The backlight display assembly also includes a cover plate 30, a display screen 31, a light source assembly 32 and a light processing film layer assembly 33. The display screen 31 is used to display images, and the cover plate 30 is a light-transmitting glass plate. The display screen 31 is arranged in the light processing film layer assembly 33, the light source assembly 32 is welded on the backlight FPC board 11, the light processing film layer assembly 33, the display screen 31 and the backlight FPC board 11 are arranged together in the metal frame 12, the cover plate 30 covers the top of the metal frame 12, and the main screen FPC board 10 is connected to one side of the display screen 31. Among them, the light processing film layer assembly 33 reflects and refracts the light emitted by the light source assembly 32, and the light processing film layer assembly 33 is mainly composed of a reflective film layer, a light guide plate, an upper light-enhancing plate, a lower light-enhancing plate and a diffuser. The reflective film layer, the light guide plate, the diffuser, the lower light-enhancing plate and the upper light-enhancing plate are stacked in sequence in the metal frame 12. The reflective film layer is arranged at the bottom of the metal frame 12. The light emitted by the light source assembly 32 is reflected to the light guide plate through the reflective film layer. The light passes through the light guide plate, the diffuser plate, the lower light-enhancing plate and the upper light-enhancing plate in sequence. The light guide plate converts the point light source of the light source assembly 32 into a surface light source for uniform illumination. The upper light-enhancing plate and the lower light-enhancing plate gather the scattered light emitted by the light source assembly 32 toward the front direction to increase the brightness. The diffuser diffuses the light so that the light is more evenly illuminated. The reflective film layer is the same as enhancing the brightness of the light. Among them, polarizers are arranged on both sides of the display screen 31. The polarizers remove excess reflections and enhance the contrast and clarity of the image. Since LED lamps have a long life and low cost, in this embodiment, the light source assembly 32 is an LED lamp.

[0029] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A display module for preventing poor contact, It is characterized in that include: Backlight display assembly, insulating film, main screen FPC board and conductive double-sided adhesive layer; The backlight display assembly includes a backlight FPC board and a metal frame, wherein the backlight FPC board is attached to the bottom of the metal frame. The backlight FPC board includes a first positive copper plate and a first negative copper plate, the insulating film covers the backlight FPC board, and the insulating film has openings at the first positive copper plate and the first negative copper plate. The metal frame is provided with two conductive openings, the first positive copper disk and the first negative copper disk extend into the two conductive openings respectively, the main screen FPC board comprises a second positive electrode and a second negative electrode, the double-sided adhesive layer is conductive in the connection direction between the first positive copper disk and the second positive electrode and in the connection direction between the first negative copper disk and the second negative electrode, the first positive copper disk is bonded and electrically connected to the second positive electrode correspondingly through the double-sided adhesive layer, and the first negative copper disk is bonded and electrically connected to the second negative electrode correspondingly through the double-sided adhesive layer.

2. The display module for preventing poor contact according to claim 1, It is characterized in that The conductive opening is a cube structure.

3. The display module for preventing poor contact according to claim 2, It is characterized in that The length of the conductive opening is 5 mm to 6 mm.

4. The display module for preventing poor contact according to claim 1, It is characterized in that The first positive copper disk and the first negative copper disk are provided with a plurality of through holes.

5. The display module for preventing poor contact according to claim 1, It is characterized in that Copper dots are provided on the first positive copper disk and the first negative copper disk. The length of the copper dots is 2.8 mm and the width is 0.6 mm.

6. The display module for preventing poor contact according to claim 1, It is characterized in that The backlight FPC board and the main screen FPC board are both provided with a component area, and the back of the component area is provided with a steel sheet.

7. The display module for preventing poor contact according to claim 1, It is characterized in that The metal frame is an iron frame.

8. The display module for preventing poor contact according to claim 1, It is characterized in that The backlight display assembly also includes a cover plate, a display screen, a light source assembly and a light processing film layer assembly; The display screen is arranged in the light processing film layer assembly, the light source assembly is welded on the backlight FPC board, the light processing film layer assembly, the display screen and the backlight FPC board are arranged together in the metal frame, the cover plate is covered on top of the metal frame, and the main screen FPC board is connected to one side of the display screen.

9. The display module for preventing poor contact according to claim 8, It is characterized in that The light source assembly is an LED lamp.

10. The display module for preventing poor contact according to claim 8, It is characterized in that The display screen is an LCD liquid crystal display.

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