Glue overflow prevention display module

Abstract

The utility model discloses an anti-overflow glue display module, which comprises a display module body and a display screen FPC, the binding end of the display screen FPC is bound on the display module body, the display screen FPC is provided with a component area, the component area is provided with a plurality of bonding pads, and each bonding pad is welded with a component; after the component is welded on the bonding pad, a bonding pad exposed part is formed on the bonding pad, a protective adhesive layer is arranged on the bonding pad exposed part, and a retaining wall is arranged around the component area and used for preventing the protective adhesive layer from overflowing. In this way, the retaining wall is arranged on the component area, and the protective glue layer is prevented from overflowing through the retaining wall. Therefore, after the protection glue layer is arranged and before the protection glue layer is cured, the glue of the protection glue layer can be prevented from overflowing to a certain extent, and the situation that the glue overflows out of the component clearance area to cause interference with the whole machine shell and FPC extrusion is caused is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to an anti-overflow glue display module. Background Art

[0002] In mobile phone display modules, FPC, or flexible circuit board, is usually used. Due to circuit design requirements, FPC usually requires SMT (surface mount technology) of a large number of electronic components, such as capacitors, resistors, and diodes. After SMT, the edges of the pads will inevitably be exposed. Therefore, the exposed pads need to be waterproofed to prevent water vapor from invading and causing electrochemical corrosion, which will cause module circuit abnormalities, that is, display abnormalities and unusable.

[0003] In order to protect the exposed pads, UV glue or thermosetting glue is usually applied after SMT. However, the glue has not yet solidified before the next processing station (UV glue curing station), and because the glue has a certain fluidity, the glue flow area is difficult to control and overflow occurs, that is, the glue easily flows outside the FPC component area (the whole machine is not free here), often causing the FPC to bend and interfere with the whole phone case, resulting in the extrusion and damage of the FPC board outside the component area. Utility Model Content

[0004] The purpose of the utility model is to overcome the shortcomings of the prior art and provide an anti-overflow glue display module, thereby avoiding the problem of glue overflow before the component protection glue is cured.

[0005] The purpose of this utility model is achieved through the following technical solutions:

[0006] An anti-overflow glue display module comprises: a display module body and a display screen FPC, wherein a binding end of the display screen FPC is bound to the display module body, and a component area is provided on the display screen FPC, a plurality of soldering pads are provided on the component area, and components are welded to each of the soldering pads; after the components are welded to the soldering pads, exposed soldering pad portions are formed on the soldering pads, a protective glue layer is provided on the exposed soldering pad portions, and a retaining wall is provided around the component area, and the retaining wall is used to prevent the protective glue layer from overflowing.

[0007] In one embodiment, the retaining wall is a white ink retaining wall.

[0008] In one embodiment, the retaining wall is a rectangular frame structure.

[0009] In one of the embodiments, a coding identification portion is provided on the display screen FPC.

[0010] In one of the embodiments, the display screen FPC is also provided with folding area alignment lines.

[0011] In one embodiment, the folding area alignment line is a white ink alignment line.

[0012] In one embodiment, the thickness of the white ink alignment line is 30 μm.

[0013] In one of the embodiments, a reinforcing steel plate is provided on the plug-in portion at the end of the display screen FPC.

[0014] In one of the embodiments, the display module body includes a cover plate, a display screen and a backlight structure. The cover plate, the display screen and the backlight structure are stacked in sequence, and the display screen FPC is bound to the display screen.

[0015] In one of the embodiments, a backlight FPC is bound to the backlight structure, and the display screen FPC is provided with a backlight FPC binding area, and the backlight FPC is bound to the backlight FPC binding area.

[0016] Compared with the prior art, the utility model has at least the following advantages:

[0017] The anti-overflow glue display module of the utility model is provided with a protective glue layer on the exposed part of the pad, the exposed part of the pad is isolated and protected by the protective glue layer, and a retaining wall is provided on the component area to prevent the overflow of the protective glue layer. In this way, after the protective glue layer is provided and before the protective glue layer is cured, the overflow of the glue of the protective glue layer can be prevented to a certain extent, reducing the problem of interference with the entire machine housing caused by the overflow of glue, resulting in the extrusion of the FPC. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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.

[0019] Figure 1 It is a structural schematic diagram of an anti-overflow glue display module in one embodiment of the utility model;

[0020] Figure 2 for Figure 1 A partial enlarged structural diagram of the anti-overflow glue display module at A;

[0021] Figure 3 A schematic diagram of the anti-overflow principle of an anti-overflow display module in one embodiment of the utility model; DETAILED DESCRIPTION

[0022] 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.

[0023] See also Figure 1 , Figure 2 and Figure 3 As shown, an anti-overflow glue display module 10 includes: a display module body 100 and a display screen FPC 200, the binding end of the display screen FPC 200 is bound to the display module body 100, and a component area is provided on the display screen FPC 200, a plurality of solder pads 210 are provided on the component area, and a component 220 is welded on each solder pad; after the component 220 is welded on the solder pad 210, a solder pad exposed portion 211 is formed on the solder pad 210, a protective glue layer 230 is provided on the solder pad exposed portion 211, and a retaining wall 240 is provided around the component area, and the retaining wall 240 is used to prevent the protective glue layer 230 from overflowing.

[0024] It should be noted that by setting a protective adhesive layer on the exposed portion of the pad, the exposed portion of the pad is isolated and protected by the protective adhesive layer, and by setting a retaining wall on the component area, the retaining wall prevents the protective adhesive layer from overflowing. In this way, after the protective adhesive layer is set and before the protective adhesive layer is cured, the glue overflow of the protective adhesive layer can be prevented to a certain extent, reducing the interference with the entire machine housing caused by the overflow of the glue, resulting in FPC extrusion.

[0025] In one embodiment, the retaining wall 240 is a white ink retaining wall. That is, a layer of white ink retaining wall is printed by silk screen printing, and the white ink retaining wall is used to reduce the glue overflow of the protective glue layer. The width of the white ink retaining wall can be selected according to the matching between the periphery of the component area and the periphery of the air-avoiding area reserved for the whole machine components, and the height of the white ink retaining wall can be adjusted and verified according to the size of the allowed glue overflow area and the amount of glue overflow.

[0026] Preferably, the retaining wall 240 is in a rectangular frame structure. The structure of the retaining wall can be selected to match the layout structure of the component area. In this embodiment, the layout of the component area is in a rectangular structure, and the corresponding retaining wall 240 is in a rectangular frame structure.

[0027] Furthermore, a coding identification part 250 is provided on the display screen FPC 200. The coding identification part 250 facilitates alignment recognition when the two-dimensional code is sprayed to ensure the accuracy of the coding position.

[0028] Furthermore, the display screen FPC 200 is also provided with a folding area alignment line 260. The folding area is softened to facilitate the folding operation during assembly. The folding area alignment line 260 is used for the folding alignment of the display screen FPC 200 to ensure the accuracy of the folding position. For example, in this embodiment, the folding area alignment line is a white ink alignment line, that is, a silk-screen white ink. Since the contrast between the white ink and the FPC color is large, it can be easily identified quickly. Preferably, the thickness of the white ink alignment line is 30 μm.

[0029] In one embodiment, a reinforcing steel plate 270 is provided on the plug-in portion at the end of the display screen FPC 200. Since the material of the display screen FPC is relatively soft, a reinforcing steel plate 270 is provided on the plug-in portion at the end of the display screen FPC to increase the strength of the plug-in portion by reinforcing the steel plate, so as to facilitate the plug-in operation and reduce the risk of damaging the display screen FPC during the plug-in process.

[0030] Specifically, the display module body 100 includes a cover plate, a display screen and a backlight structure, which are stacked in sequence, and the display screen FPC 200 is bound to the display screen. The cover plate protects the internal structure of the display module body, the display screen realizes the display of images, and the backlight structure provides light for the display of the display screen to ensure the display effect.

[0031] Furthermore, the backlight structure is bound with a backlight FPC 300, and the display screen FPC 200 is provided with a backlight FPC binding area, and the backlight FPC 300 is bound to the backlight FPC binding area. In this way, after the display screen FPC 200 is powered on, the backlight structure is also started.

[0032] 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. An anti-overflow glue display module, characterized in that: include: Display module body; and A display screen FPC, wherein a binding end of the display screen FPC is bound to the display module body, and a component area is provided on the display screen FPC, a plurality of pads are provided on the component area, and components are welded on each of the pads; After the components are welded on the pad, an exposed pad portion is formed on the pad, a protective adhesive layer is arranged on the exposed pad portion, and a retaining wall is arranged around the component area, and the retaining wall is used to prevent the protective adhesive layer from overflowing.

2. The anti-overflow glue display module according to claim 1, characterized in that: The retaining wall is a white ink retaining wall.

3. The anti-overflow glue display module according to claim 2, characterized in that: The retaining wall is in a rectangular frame structure.

4. The anti-overflow glue display module according to claim 1, characterized in that: The display screen FPC is provided with a coding identification portion.

5. The anti-overflow glue display module according to claim 1, characterized in that: The display screen FPC is also provided with folding area alignment lines.

6. The anti-overflow glue display module according to claim 5, characterized in that: The alignment lines in the folding area are white ink alignment lines.

7. The anti-overflow glue display module according to claim 6, characterized in that: The thickness of the white ink alignment line is 30 μm.

8. The anti-overflow glue display module according to claim 1, characterized in that: A reinforcing steel plate is arranged on the plug-in portion at the end of the FPC of the display screen.

9. The anti-overflow glue display module according to any one of claims 1 to 8, characterized in that: The display module body comprises a cover plate, a display screen and a backlight structure. The cover plate, the display screen and the backlight structure are stacked in sequence, and the display screen FPC is bound to the display screen.

10. The anti-overflow glue display module according to claim 9, characterized in that: The backlight structure is bound with a backlight FPC, and the display screen FPC is provided with a backlight FPC binding area, and the backlight FPC is bound to the backlight FPC binding area.

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