Bending-resistant flexible circuit board

Abstract

The utility model discloses a bending-resistant flexible circuit board, which comprises a circuit board body, a plurality of layers of circuits are distributed on the circuit board body along the thickness direction, and every two adjacent layers of circuits are distributed in a staggered manner, so that the influence of thickness accumulation caused by superposition of the plurality of layers of circuits can be avoided during bending, a copper wire can effectively avoid a stress concentration area, and the circuits are prevented from being broken. And meanwhile, hard-to-hard accelerated damage of adjacent circuits can be avoided, so that the bending resistance of the flexible circuit board is improved, the product yield and the production efficiency are improved, and the market competitiveness is improved. According to the flexible circuit board, only the circuit distribution mode is changed, and the material and the production process of the existing flexible circuit board can be maintained, so that the reliability risk of a finished product caused by the change of the material and the process is not increased.

Description

TECHNICAL FIELD

[0001] The utility model relates to a circuit board technical field, concretely relates to a flexible circuit board of bending resistance. BACKGROUND

[0002] Flexible circuit board has been more and more widely used because of its light and flexible, bendable and flexible advantages. However, the flexible circuit board in the prior art is prone to tearing and line breakage during bending, which causes problems in the electrical performance of the flexible circuit board and reduces product yield and production efficiency. SUMMARY

[0003] To overcome the deficiencies of the prior art, the utility model aims at providing a flexible circuit board of bending resistance, which can improve the bending resistance of the flexible circuit board, increase product yield and production efficiency, and enhance market competitiveness.

[0004] To solve the above problems, the utility model adopts the following technical scheme: a flexible circuit board of bending resistance, comprising a circuit board body, the circuit board body is distributed with multiple layers of circuit along the thickness direction, and each adjacent two layers of circuit are distributed staggeredly.

[0005] Compared with the prior art, the utility model has the beneficial effects that: the flexible circuit board distributes the adjacent two layers of circuit staggeredly, which can avoid the influence of the cumulative thickness of the multiple layers of circuit during bending, effectively avoid the stress concentration area of the copper wire, prevent line breakage, and also avoid the accelerated damage of the adjacent circuit due to hard-to-hard contact, thereby improving the bending resistance of the flexible circuit board, increasing product yield and production efficiency, and enhancing market competitiveness. The flexible circuit board only changes the circuit distribution mode, and the material and production process of the existing flexible circuit board can be maintained, so that the risk of product reliability caused by changes in material and process is avoided.

[0006] The flexible circuit board of bending resistance has the following advantages: the circuit board body is provided with arc-shaped grooves at both ends of the bending line, which can effectively prevent the circuit from being damaged during bending.

[0007] The flexible circuit board of bending resistance has the following advantages: the circuit board body is provided with multiple through holes along the bending line, the axis of the through hole is along the thickness direction of the circuit board body, and the through hole avoids the circuit of the flexible circuit board.

[0008] The flexible circuit board of bending resistance has the following advantages: the through hole is a circular hole.

[0009] The utility model will be further described in detail below in combination with the drawings and specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0010] Figure 1 It is a structure schematic view of the flexible circuit board of the utility model embodiment.

[0011] Figure 2 The plan view of the flexible circuit board of the embodiment of the present application.

[0012] Explanation of reference numerals: 100 circuit board body, 110 arc-shaped groove, 120 through hole. DETAILED DESCRIPTION

[0013] The embodiment of the present application will be described in detail below, with reference to Figure 1 and Figure 2 The embodiment of the present application provides a flexible circuit board resistant to bending, comprising a circuit board body 100, the circuit board body 100 is distributed with multiple layers of circuits along the thickness direction, each adjacent two layers of circuits are distributed staggeredly, the influence of the cumulative thickness of the multiple layers of circuits can be avoided when bending, the copper wire can be effectively avoided from the stress concentration area, the circuit breakage is prevented, meanwhile, the hard-to-hard accelerated damage of the adjacent circuits can also be avoided, the bending resistance of each layer of circuits is obviously improved, thereby the bending resistance of the flexible circuit board is improved, the product yield and production efficiency are improved, and the market competitiveness is improved. The flexible circuit board only changes the circuit distribution mode, the material and production process of the existing flexible circuit board can be maintained, therefore, the finished product reliability risk caused by the change of the material and process is not increased.

[0014] Further, with reference to Figure 2 , the arc-shaped grooves 110 are arranged at both sides of the circuit board body 100 corresponding to both ends of the bending line, so that the circuit board body 100 presents a dumbbell shape, when subjected to external bending force, the external force can be transferred to the waist of the dumbbell-shaped structure, thereby changing the direction of the external force component, improving the influence of the external force on the flexible circuit board, thereby reducing the risk of bending and tearing of the appearance of the flexible circuit board. Further, the circuit board body 100 is distributed with multiple through holes 120 along the bending line, the axis of the through hole 120 is along the thickness direction of the circuit board body 100, thereby further improving the influence of stress concentration and reducing the occurrence of bending defects. And the through hole 120 avoids the circuit of the flexible circuit board, does not affect the circuit function of the flexible circuit board. Further, the through hole 120 is a circular hole, to further improve the influence of stress concentration. The flexible circuit board only changes the circuit distribution on the circuit board and the appearance of the circuit board body 100, does not change the material and process of the circuit board, can maintain the material and production process of the existing flexible circuit board, therefore, the finished product reliability risk caused by the change of the material and process is not increased.

[0015] It should be noted that in the description of the utility model, if there are some directions, for example, the directions or position relations of up, down, front, back, left, right and the like are referred to, they are all based on the directions or position relations shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific direction, be constructed or operated in a specific direction, and cannot be understood as a limitation on the utility model.

[0016] In the description of the utility model, the meaning of several is one or more, the meaning of multiple is two and two or more, greater than, less than, more than and the like are understood as not including the number, above, below, within and the like are understood as including the number. If the first or second and the like are described, it is only for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the sequence of technical features indicated.

[0017] In the description of the utility model, unless otherwise explicitly limited, the words of setting, installing, connecting and the like should be understood in a broad sense, and the person skilled in the art can reasonably determine the specific meaning of the above words in the utility model according to the specific content of the technical scheme.

[0018] The above-mentioned embodiments are only preferred embodiments of the utility model, and cannot be used to limit the range of protection of the utility model, and any non-essential changes and replacements made by the person skilled in the art on the basis of the utility model all belong to the range of protection required by the utility model.

Claims

1. A flexible wiring board resistant to bending, characterized by, The circuit board body (100) is provided with multiple layers of circuit along the thickness direction, and each two adjacent layers of circuit are staggered.

2. The flexible wiring board resistant to bending according to claim 1, wherein Arc-shaped grooves (110) are arranged at both ends of the bending line on both sides of the circuit board body (100).

3. The flexible wiring board resistant to bending according to claim 1, wherein Multiple through holes (120) are arranged along the bending line on the circuit board body (100), the axis of the through hole (120) is along the thickness direction of the circuit board body (100), and the through hole (120) avoids the circuit of the flexible circuit board.

4. The flexible wiring board resistant to bending according to claim 3, wherein The through hole (120) is a circular hole.

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