Length-adjustable FPC structure

Abstract

The utility model discloses a length-adjustable FPC structure, which comprises a backlight iron stand, a display screen module arranged in the backlight iron stand and an FPC circuit board connected with the display screen module, the outer surface of the backlight iron stand is subjected to nickel plating treatment, the side surface of the FPC circuit board is fixedly connected with at least two groups of convex lugs, and the convex lugs are arranged in the backlight iron stand. A bending part is arranged between each group of protruding lugs and the FPC circuit board, and grounding copper blocks are arranged on the front side and the rear side of each protruding lug. According to the length-adjustable FPC structure provided by the utility model, the plurality of groups of protruding lugs are arranged on the FPC circuit board, and the length of the FPC circuit board is adjusted through different welding positions, so that the plugging tightness of the connecting terminal on the FPC circuit board and the connector can be adjusted, and a customer only needs to purchase one display screen FPC circuit board, so that the cost of the customer is reduced. The device can be applied to a plurality of different display screen models, and for display screen manufacturers, material management and control are greatly facilitated, and the risk of material mixing is avoided.

Description

Technical Field

[0001] This utility model relates to the field of FPC circuit board technology, and in particular to an adjustable-length FPC structure. Background Technology

[0002] FPC (Flexible Printed Circuit) is a type of printed circuit board, also known as a flexible board. It is created by using photolithography and etching processes on a flexible substrate to fabricate conductive circuit patterns. Double-sided and multi-layer boards achieve electrical connection between the outer and inner layers through metallized vias. The circuit pattern surface is protected and insulated by polyimide (PI) and adhesive layers. FPC boasts advantages such as light weight, thinness, small size, foldability, and high circuit density, and is widely used in modern electronic products such as smartphones, wearable devices, automotive electronics, medical equipment, and industrial control equipment. As a key material for meeting the requirements of new consumer electronics products and supporting and connecting internal electronic components, the usage of FPC is increasing year by year. With the development of new consumer electronics products, FPC will usher in a broad development prospect.

[0003] Currently, the length of FPC circuit boards is fixed. After producing various models of displays, display manufacturers need to purchase a variety of FPC circuit boards of different lengths. Since FPC circuit boards of different lengths are exactly the same except for their length, placing them together not only creates the risk of mixing materials, but also makes material control inconvenient, thus causing great inconvenience to the production of displays. Utility Model Content

[0004] Therefore, it is necessary to provide an adjustable-length FPC structure to address the aforementioned technical problems. This is achieved by setting multiple sets of protruding ears on the FPC circuit board. These ears are designed to be positioned according to different FPC circuit board lengths and are nickel-plated on the outer surface of the backlight frame. After the FPC circuit board is bent along the bend, the protruding ears are soldered to the backlight frame. Since the length of the FPC circuit board can be adjusted by changing the soldering positions, the tightness of the connection terminals and connectors on the FPC circuit board can be adjusted. This allows customers to purchase only one type of display screen FPC circuit board, change its length by bending the bend and soldering the protruding ears to the backlight frame, and apply it to several different display screen models. For display screen manufacturers, this not only greatly simplifies material control but also eliminates the risk of mixed materials.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An adjustable-length FPC structure includes:

[0007] The backlight frame, the display module installed inside the backlight frame, and the FPC circuit board connected to the display module are provided. The outer surface of the backlight frame is nickel-plated. At least two sets of protruding ears are fixedly connected to the side of the FPC circuit board. Each set of protruding ears has a bend between it and the FPC circuit board. Grounding copper blocks are provided on both the front and rear sides of the protruding ears. A through hole is opened in the middle of the grounding copper block. The length of the FPC circuit board is adjusted by the bend and the protruding ears are fixed to the backlight frame by soldering.

[0008] Furthermore, the FPC circuit board includes a component section, a connecting section, and a connecting terminal connected in sequence. The component section is electrically connected to the display module, and the protruding ears are located on the side of the connecting section.

[0009] Furthermore, the protruding ear and the connecting part are integrally manufactured, and a rounded corner is provided between the protruding ear and the connecting part.

[0010] Furthermore, each group of protruding ears consists of two, and the two protruding ears are symmetrically and fixedly connected to the left and right sides of the connecting part.

[0011] Furthermore, the bent portion is located on the side of the protruding ear away from the component portion.

[0012] Furthermore, the bending portion is perpendicular to the length direction of the connecting portion.

[0013] Furthermore, the grounding copper block has a circular structure, and the through hole is located at the center of the grounding copper block, and the through hole has a circular structure.

[0014] Furthermore, the diameter of the grounding copper block is 2mm, and the diameter of the through hole is 1mm.

[0015] Furthermore, a hollow hole is provided on the bent portion. The hollow hole is elliptical, and the middle part of the hollow hole is flush with the fold line of the bent portion.

[0016] Furthermore, the number of hollow holes is at least five, and the five hollow holes are evenly distributed on the bending portion.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] The adjustable-length FPC structure provided by this utility model features multiple sets of protruding ears on the FPC circuit board. These ears are positioned according to the different lengths of the FPC circuit board and are nickel-plated on the outer surface of the backlight frame. After the FPC circuit board is bent along the bend, the protruding ears are soldered to the backlight frame. By adjusting the length of the FPC circuit board through different soldering positions, the tightness of the connection terminals and connectors on the FPC circuit board can be adjusted. This allows customers to purchase only one type of display screen FPC circuit board, change its length by bending the bend and soldering the protruding ears to the backlight frame, and thus apply it to several different display screen models. For display screen manufacturers, this not only greatly simplifies material control but also eliminates the risk of mixed materials. Attached Figure Description

[0019] Figure 1 A front view schematic diagram of the adjustable-length FPC structure provided by this utility model;

[0020] Figure 2 A rear view schematic diagram of the adjustable-length FPC structure provided by this utility model;

[0021] Figure 3 A schematic diagram of the adjustable-length FPC structure provided by this utility model being welded to the backlight iron frame;

[0022] Figure 4 The adjustable length FPC structure provided by this utility model Figure 3 Enlarged structural diagram at point A;

[0023] Figure 5 The adjustable length FPC structure provided by this utility model Figure 3 A schematic diagram of the right-side view structure;

[0024] Figure 6 A schematic diagram of the adjustable-length FPC structure provided by this utility model, showing the reduction in length after bending;

[0025] Figure 7 The adjustable length FPC structure provided by this utility model Figure 6 A schematic diagram of the right-side view structure;

[0026] Figure 8 A schematic diagram of the structure with hollowed-out holes on the bent portion of the adjustable-length FPC structure provided by this utility model.

[0027] The markings in the diagram are explained as follows:

[0028] 1. Backlight frame; 2. Display module; 3. FPC circuit board; 4. Solder; 5. Protruding ears; 6. Bending part; 7. Grounding copper block; 8. Through hole; 9. Rounded corner; 10. Hole; 301. Component part; 302. Connecting part; 303. Connecting terminal. Detailed Implementation

[0029] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0030] As described in the background section, the length of FPC circuit boards is currently fixed. After producing various models of displays, display manufacturers need to purchase a variety of FPC circuit boards of different lengths. Since FPC circuit boards of different lengths are exactly the same except for their length, placing them together not only creates the risk of mixing materials, but also makes material control inconvenient, thus causing great inconvenience to the production of displays.

[0031] To solve this technical problem, this utility model provides an adjustable-length FPC structure. After the FPC circuit board 3 is bent along the bending part 6, the protruding ears 5 are soldered and fixed to the backlight iron frame 1 by solder 4. Since the length of the FPC circuit board 3 can be adjusted by different soldering positions, the tightness of the connection terminals 303 on the FPC circuit board 3 and the connector can be adjusted. In this way, customers only need to purchase one type of display screen FPC circuit board 3, and change the length by bending it through the bending part 6 and soldering the protruding ears 5 to the backlight iron frame 1, so that it can be applied to several different display screen models.

[0032] For details, please refer to Figure 1-8 The adjustable-length FPC structure specifically includes:

[0033] The backlight frame 1 and the display module 2 installed inside the backlight frame 1; the outer surface of the backlight frame 1 is nickel plated.

[0034] The FPC circuit board 3 is connected to the display module 2. At least two sets of protruding ears 5 are fixedly connected to the side of the FPC circuit board 3. Each set of protruding ears 5 has a bending part 6 between it and the FPC circuit board 3. Grounding copper blocks 7 are provided on both the front and rear sides of the protruding ears 5. A through hole 8 is opened in the middle of the grounding copper block 7. The length of the FPC circuit board 3 is adjusted by the bending part 6 and the through hole 8 is soldered and fixed to the backlight iron frame 1 by solder 4.

[0035] The adjustable-length FPC structure provided by this utility model features multiple sets of protruding ears 5 on the FPC circuit board 3. These protruding ears 5 are positioned according to the different lengths of the FPC circuit board 3 and are nickel-plated on the outer surface of the backlight frame 1. After the FPC circuit board 3 is bent along the bending portion 6, the protruding ears 5 are soldered to the backlight frame 1 using solder 4. By adjusting the length of the FPC circuit board 3 through different soldering positions, the tightness of the connection between the connecting terminals 303 and the connector on the FPC circuit board 3 can be adjusted. This allows customers to purchase only one type of display screen FPC circuit board 3, bend it through the bending portion 6, and then solder the protruding ears 5 to the backlight frame 1 to change its length, thus enabling its application to several different display screen models. For display screen manufacturers, this not only greatly facilitates material control but also eliminates the risk of mixed materials.

[0036] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0037] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0038] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0039] Example 1

[0040] Please refer to Figure 1-7 An adjustable-length FPC structure includes a backlight frame 1 and a display module 2 installed inside the backlight frame 1, wherein the outer surface of the backlight frame 1 is nickel plated.

[0041] The FPC circuit board 3 is connected to the display module 2. At least two sets of protruding ears 5 are fixedly connected to the side of the FPC circuit board 3. Each set of protruding ears 5 has a bending part 6 between it and the FPC circuit board 3. Grounding copper blocks 7 are provided on both the front and rear sides of the protruding ears 5. A through hole 8 is opened in the middle of the grounding copper block 7. The length of the FPC circuit board 3 is adjusted by the bending part 6 and the protruding ears 5 are fixed to the backlight iron frame 1 by solder 4. The position of the protruding ears 5 should be designed in the corresponding position according to the different lengths of the FPC circuit board 3. In this way, after the FPC circuit board 3 is bent along the bending part 6, the tightness of the connection with the external connector is just right.

[0042] The protruding ears 5 can be set into three groups along the length of the FPC circuit board 3, and the corresponding FPC circuit board 3 has three bends 6. In this way, after the FPC circuit board 3 bends along the first bend 6, it can be adapted to use a display screen with a longer FPC circuit board 3. After the FPC circuit board 3 bends along the second bend 6, it can be adapted to use a display screen with a medium length FPC circuit board 3. After the FPC circuit board 3 bends along the third bend 6, it can be adapted to use a display screen with a shorter FPC circuit board 3.

[0043] The adjustable-length FPC structure provided in this embodiment features multiple sets of protruding ears 5 on the FPC circuit board 3. The protruding ears 5 are designed in corresponding positions according to different FPC circuit board 3 lengths and are nickel-plated on the outer surface of the backlight frame 1. After the FPC circuit board 3 is bent along the bending portion 6, the protruding ears 5 are soldered and fixed to the backlight frame 1 by solder 4. Since the length of the FPC circuit board 3 can be adjusted by different soldering positions, the tightness of the connection terminals 303 on the FPC circuit board 3 and the connector can be adjusted. In this way, customers only need to purchase one type of display screen FPC circuit board 3, and change the length by bending it through the bending portion 6 and soldering the protruding ears 5 to the backlight frame 1, thus making it applicable to several different display screen models.

[0044] Example 2

[0045] The adjustable-length FPC structure provided in Example 1 is further optimized, specifically, as follows: Figure 1 As shown, the FPC circuit board 3 includes a component section 301, a connection section 302, and a connection terminal 303 connected in sequence. The component section 301 is electrically connected to the display module 2. The protruding ears 5 are located on the side of the connection section 302. The backlight module in the backlight frame 1 is fixed to the component section 301 by welding through the backlight FPC. In this way, the circuits of the display module 2 and the backlight module can be designed on the same FPC and share the same connection terminal 303 for external connection, thereby reducing the number of external interfaces of the display and facilitating subsequent assembly.

[0046] like Figure 3 and Figure 4 As shown, the protruding ear 5 and the connecting part 302 are integrally manufactured. A rounded corner 9 is provided between the protruding ear 5 and the connecting part 302. The rounded corner 9 reduces the stress between the protruding ear 5 and the connecting part 302. The integral manufacturing of the protruding ear 5 and the connecting part 302 can reduce costs and is very convenient.

[0047] Each set of protruding ears 5 consists of two, and the two protruding ears 5 are symmetrically fixed on the left and right sides of the connecting part 302. In this way, after the protruding ears 5 are welded and fixed to the backlight iron frame 1 by solder 4, the force on both sides is more even.

[0048] Example 3

[0049] The adjustable-length FPC structure provided in Example 1 or 2 is further optimized, such as... Figure 3 and Figure 6 As shown, the bending part 6 is located on the side of the protruding ear 5 away from the component part 301. The bending part 6 is perpendicular to the length direction of the connecting part 302. In this way, the protruding ear 5 can be first welded and fixed to the backlight iron frame 1 by solder 4, and then the length can be adjusted by bending through the bending part 6.

[0050] The grounding copper block 7 has a circular structure, and the through hole 8 is located at the center of the grounding copper block 7. The diameter of the grounding copper block 7 is 2mm, and the diameter of the through hole 8 is 1mm.

[0051] In this way, the solder 4 fills the through hole 8 and makes the grounding copper block 7 connected to the backlight iron frame 1 for better grounding. At the same time, the protruding ear 5 is welded more firmly to the backlight iron frame 1.

[0052] Example 4

[0053] The adjustable-length FPC structure provided in the above embodiments is further optimized, such as... Figure 7 As shown, the bent portion 6 has hollow holes 10. The hollow holes 10 are elliptical and the middle part of the hollow hole 10 is flush with the fold line of the bent portion 6. There are at least five hollow holes 10, and the five hollow holes 10 are evenly distributed on the bent portion 6.

[0054] With this structural design, the location of the hollow hole 10 avoids the circuitry on the FPC circuit board 3, so as not to affect the overall performance. The inner wall of the hollow hole 10 is arc-shaped, which reduces the stress of bending and effectively avoids functional defects caused by bending of the FPC circuit board 3.

[0055] The adjustable-length FPC structure provided by this utility model is used as follows:

[0056] By setting multiple sets of protruding ears 5 on the FPC circuit board 3, the protruding ears 5 are designed in corresponding positions according to different FPC circuit board 3 lengths, and are nickel-plated on the outer surface of the backlight iron frame 1. After the FPC circuit board 3 is bent along the bending part 6, the protruding ears 5 are soldered and fixed to the backlight iron frame 1 by solder 4. Since the length of the FPC circuit board 3 can be adjusted by different soldering positions, the tightness of the connection terminals 303 on the FPC circuit board 3 and the connector can be adjusted. In this way, customers only need to purchase one type of display screen FPC circuit board 3, and change the length by bending it through the bending part 6 and soldering the protruding ears 5 to the backlight iron frame 1. This allows it to be applied to several different display screen models. For display screen manufacturers, this not only greatly facilitates material control, but also eliminates the risk of mixed materials.

[0057] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0058] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. An adjustable-length FPC structure, characterized in that, It includes: The backlight frame (1) and the display module (2) installed inside the backlight frame (1) have nickel-plated outer surfaces. The FPC circuit board (3) is connected to the display module (2). At least two sets of protruding ears (5) are fixedly connected to the side of the FPC circuit board (3). Each set of protruding ears (5) is provided with a bending part (6) between it and the FPC circuit board (3). Grounding copper blocks (7) are provided on both the front and rear sides of the protruding ears (5). A through hole (8) is opened in the middle of the grounding copper block (7). The length of the FPC circuit board (3) is adjusted by the bending part (6) and the protruding ears (5) are soldered and fixed to the backlight iron frame (1) by solder (4).

2. The adjustable-length FPC structure according to claim 1, characterized in that, The FPC circuit board (3) includes a component part (301), a connection part (302) and a connection terminal (303) connected in sequence. The component part (301) is electrically connected to the display module (2), and the protruding ear (5) is located on the side of the connection part (302).

3. The adjustable-length FPC structure according to claim 2, characterized in that, The protruding ear (5) and the connecting part (302) are integrally manufactured, and a rounded corner (9) is provided between the protruding ear (5) and the connecting part (302).

4. The adjustable-length FPC structure according to claim 3, characterized in that, The number of protruding ears (5) in each group is two, and the two protruding ears (5) are symmetrically fixedly connected to the left and right sides of the connecting part (302).

5. The adjustable-length FPC structure according to claim 2, characterized in that, The bent portion (6) is located on the side of the protruding ear (5) away from the element portion (301).

6. The adjustable-length FPC structure according to claim 5, characterized in that, The bending portion (6) is perpendicular to the length direction of the connecting portion (302).

7. The adjustable-length FPC structure according to claim 2, characterized in that, The grounding copper block (7) has a circular structure, and the through hole (8) is located at the center of the grounding copper block (7). The through hole (8) has a circular structure.

8. The adjustable-length FPC structure according to claim 7, characterized in that, The diameter of the grounding copper block (7) is 2mm, and the diameter of the through hole (8) is 1mm.

9. The adjustable-length FPC structure according to claim 2, characterized in that, The bent portion (6) has a hollow hole (10) which is elliptical and the middle part of the hollow hole (10) is flush with the fold line of the bent portion (6).

10. The adjustable-length FPC structure according to claim 9, characterized in that, The number of the hollow holes (10) is at least five, and the five hollow holes (10) are evenly distributed on the bending part (6).

Images