Flexible printed circuit board with positioning holes

Abstract

The utility model discloses a flexible printed circuit board with positioning hole, include: FPC, be equipped with golden finger on FPC, FPC is equipped with first positioning hole and second positioning hole respectively in left and right sides, first positioning hole and second positioning hole correspond the positioning column position of back light module, and set up in the position of the assembly lamp deflection, be located the third positioning hole of golden finger side, be used for the positioning when welding with mainboard, wherein, the design of first positioning hole, second positioning hole and third positioning hole all do not interfere with the assembly of LED lamp, and do not interfere with the welding of golden finger and mainboard. Significantly reduce the risk of LED lamp deflection, improve back light module assembly efficiency.

Description

Technical Field

[0001] This utility model relates to the field of LCD module technology, specifically to a flexible printed circuit board with positioning holes. Background Technology

[0002] The existing LCD modules are widely used. Among them, the FPC with positioning holes needs to be assembled and fixed together with the BL and the motherboard. Currently, the existing module assembly requires the FOG and BL to be positioned before assembly. During the assembly process, the LEDs are prone to misalignment. The production process is complicated and has many steps, resulting in low assembly production efficiency.

[0003] Therefore, based on the aforementioned defects of FPCs without positioning holes, it is necessary to improve them by using FPCs with positioning holes. Summary of the Invention

[0004] The purpose of this invention is to provide a flexible printed circuit board with positioning holes, in order to solve the technical problems existing in the background art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A flexible printed circuit board with positioning holes includes: an FPC, wherein gold fingers are provided on the FPC;

[0007] The FPC has a first positioning hole and a second positioning hole on the left and right sides respectively. The first positioning hole and the second positioning hole correspond to the positioning post position of the backlight module and are located at a position slightly below the assembly lamp.

[0008] The third positioning hole, located on the side of the gold finger, is used for positioning when soldering to the motherboard;

[0009] The design of the first positioning hole, the second positioning hole, and the third positioning hole does not interfere with the assembly of the LED light, nor with the soldering of the gold fingers to the motherboard.

[0010] In some embodiments, the first positioning hole and the second positioning hole are located on the left and right sides of the FPC near the lower end, respectively.

[0011] In some embodiments, the third positioning hole is located at the center of the side of the gold finger.

[0012] In some embodiments, the diameters of the first and second positioning holes match the diameters of the backlight module positioning posts to ensure the alignment of the FPC with the backlight module.

[0013] In some embodiments, the diameter of the third positioning hole matches the diameter of the motherboard positioning post to ensure the welding accuracy of the gold finger to the motherboard.

[0014] In some embodiments, the FPC structure further includes a lead-out portion, a connecting portion, a turning portion, and a soldering area. The lead-out portion is located at the lower end of the main body, the connecting portion is vertically arranged, and the upper and lower ends of the connecting portion are respectively connected to the lead-out portion and the turning portion. The turning portion is arranged horizontally, and the outer end of the turning portion is connected to the soldering area. The soldering area is provided with the gold fingers, and the third positioning hole is located at the upper and lower ends of the soldering area.

[0015] In some embodiments, the positioning hole is a circular through hole.

[0016] The beneficial effects that a flexible printed circuit board with positioning holes disclosed in this application may bring include, but are not limited to:

[0017] Significantly reduces the risk of LED lamp misalignment and improves backlight module assembly efficiency;

[0018] Ensure the precision of gold finger welding and reduce the defect rate;

[0019] It is compatible with existing production equipment, requires no additional modifications, and is inexpensive. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of this utility model.

[0021] The reference numerals of this utility model are as follows: 1-first positioning hole, 2-LED light, 3-second positioning hole, 4-gold finger, 5-third positioning hole. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0023] Conversely, this application covers any substitutions, modifications, equivalent methods, and schemes made within the spirit and scope of this application as defined in the claims. Furthermore, to provide the public with a better understanding of this application, certain specific details are described in detail below. However, this application can be fully understood by those skilled in the art even without these detailed descriptions.

[0024] like Figure 1 As shown, a flexible printed circuit board with positioning holes includes: an FPC, on which gold fingers 4 are provided; the FPC has a first positioning hole 1 and a second positioning hole 3 on the left and right sides respectively, the first positioning hole 1 and the second positioning hole 3 correspond to the positioning post positions of the backlight module and are set at a position slightly below the assembly lamp; used to fix the relative position of the FPC and the backlight module during the assembly stage to prevent the LED lamp 2 from shifting.

[0025] The third positioning hole 5, located on the side of the gold finger 4, corresponds to the positioning post on the motherboard and is used to accurately position the gold finger 4 during soldering to avoid misalignment.

[0026] The design of the first positioning hole 1, the second positioning hole 3 and the third positioning hole 5 does not interfere with the assembly of the LED lamp 2, nor with the soldering of the gold finger 4 to the motherboard.

[0027] In some embodiments, the first positioning hole 1 and the second positioning hole 3 are located on the left and right sides of the FPC near the lower end, respectively. The third positioning hole 5 is located at the center of the side of the gold finger 4.

[0028] In some embodiments, the diameters of the first positioning hole 1 and the second positioning hole 3 match the diameters of the backlight module positioning posts to ensure the alignment of the FPC with the backlight module. The diameter of the third positioning hole 5 matches the diameter of the motherboard positioning posts to ensure the welding accuracy of the gold fingers 4 with the motherboard.

[0029] In some embodiments, the FPC structure further includes a lead-out portion, a connecting portion, a turning portion, and a welding area. The lead-out portion is located at the lower end of the main body, the connecting portion is vertically arranged, and its upper and lower ends are respectively connected to the lead-out portion and the turning portion. The turning portion is horizontally arranged, and its outer end is connected to the welding area. The welding area is provided with the gold fingers 4, and the third positioning hole 5 is located at both the upper and lower ends of the welding area. These structures enable more precise positioning of the FPC during installation and welding, improving production efficiency and product quality.

[0030] In some embodiments, the positioning hole is a circular through hole.

[0031] The assembly process is as follows:

[0032] Align the first positioning hole 1 and the second positioning hole 3 of the FPC with the positioning post of the backlight module, insert them and fix them by hot pressing process to ensure that the LED lamp 2 is centered and without offset.

[0033] Motherboard soldering stage: Align the third positioning hole 5 with the motherboard positioning post, and use wave soldering or reflow soldering to complete the soldering of the gold finger 4 to avoid cold solder joints or short circuits caused by displacement.

[0034] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A flexible printed circuit board with positioning holes, characterized in that, include: FPC, FPC has gold fingers (4). The FPC has a first positioning hole (1) and a second positioning hole (3) on the left and right sides respectively. The first positioning hole (1) and the second positioning hole (3) correspond to the positioning post position of the backlight module and are set at a position slightly below the assembly lamp. The third positioning hole (5) located on the side of the gold finger (4) is used for positioning when soldering with the motherboard; The design of the first positioning hole (1), the second positioning hole (3) and the third positioning hole (5) does not interfere with the assembly of the LED lamp (2) and does not interfere with the soldering of the gold finger (4) to the motherboard.

2. The flexible printed circuit board with positioning holes according to claim 1, characterized in that, The first positioning hole (1) and the second positioning hole (3) are located on the left and right sides of the FPC near the lower end, respectively.

3. The flexible printed circuit board with positioning holes according to claim 1, characterized in that, The third positioning hole (5) is located at the center of the side of the gold finger (4).

4. The flexible printed circuit board with positioning holes according to claim 1, characterized in that, The diameters of the first positioning hole (1) and the second positioning hole (3) are matched with the diameters of the positioning posts of the backlight module to ensure the alignment of the FPC with the backlight module.

5. The flexible printed circuit board with positioning holes according to claim 1, characterized in that, The diameter of the third positioning hole (5) matches the diameter of the motherboard positioning post to ensure the welding accuracy of the gold finger (4) to the motherboard.

6. The flexible printed circuit board with positioning holes according to claim 1, characterized in that, The FPC structure also includes an outlet, a connecting part, a turning part, and a welding area. The outlet is located at the lower end of the main body. The connecting part is vertically arranged. The upper and lower ends of the connecting part are respectively connected to the outlet and the turning part. The turning part is horizontally arranged. The outer end of the turning part is connected to the welding area. The welding area is provided with the gold finger (4), and the third positioning hole (5) is located at the upper and lower ends of the welding area.

7. A flexible printed circuit board with positioning holes according to any one of claims 1-6, characterized in that, The positioning hole is a circular through hole.

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