Flexible circuit board used in microphone and microphone thereof

Abstract

The utility model discloses a flexible circuit board used in a microphone, which comprises a substrate and a grounding circuit arranged on the substrate, the substrate is provided with a grounding ring, the grounding ring is electrically connected with the grounding circuit, the outer circumference of the grounding ring is provided with a discharge tip, and the discharge tip is electrically connected with the grounding circuit. The discharge tip extends in a direction away from the center of the grounding ring. According to the utility model, the discharge tip is arranged on the outer periphery of the grounding ring, and charges are released through the discharge tip, so that the damage to the microphone diaphragm is reduced, the whistling of the microphone is reduced, the tone is adjusted, the electrostatic discharge damage is prevented, and the output audio signal is more complete.

Description

Technical Field

[0001] This utility model relates to the field of microphone technology, and in particular to a flexible circuit board for use in microphones and the microphone thereof. Background Technology

[0002] As is well known, microphone diaphragms are extremely sensitive, and even tiny particles or static electricity can damage them. When using microphones, due to their high electrostatic sensitivity and the current trend towards miniaturization, the components used in microphones are also becoming smaller. Consequently, their voltage withstand capability is reduced, and their resistance to electrostatic shock is weakened. This makes them more susceptible to damage from the electrostatic electric field and current generated by electrostatic discharge, which can easily damage the internal electronic components (such as the diaphragm), thus affecting their performance and lifespan. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a flexible circuit board for microphones, so as to solve the problem that the diaphragm of existing microphones is easily damaged by electrostatic discharge.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a flexible circuit board for a microphone, comprising a substrate and a grounding line disposed on the substrate, a grounding ring disposed on the substrate, the grounding ring being electrically connected to the grounding line, and a discharge tip disposed on the outer circumference of the grounding ring, the discharge tip extending in a direction away from the center of the grounding ring.

[0005] Furthermore, the flexible circuit board described in this utility model includes multiple discharge tips, which are evenly distributed along the circumference of the grounding ring.

[0006] Furthermore, in the flexible circuit board described in this utility model, the distance between two adjacent discharge tips is at least 5 mm.

[0007] Furthermore, in the flexible circuit board described in this utility model, the material of the discharge tip is copper.

[0008] Furthermore, in the flexible circuit board described in this utility model, the grounding ring is made of copper.

[0009] Furthermore, in the flexible circuit board described in this utility model, the discharge tip is a triangular tip, and the bottom edge of the discharge tip is connected to the grounding ring.

[0010] Furthermore, in the flexible circuit board described in this utility model, the discharge tip is in the shape of an isosceles triangle, and the length of the two sides of the discharge tip is 1mm.

[0011] Furthermore, in the flexible circuit board described in this utility model, the grounding ring is disposed through the substrate.

[0012] Furthermore, in the flexible circuit board described in this utility model, the discharge tip includes multiple sharp corners.

[0013] Accordingly, another objective of this invention is to design a microphone that includes the flexible circuit board described above.

[0014] The beneficial effects of this invention are as follows: a discharge tip is provided on the outer periphery of the grounding ring, extending away from the grounding ring to form a sharp angle design on the grounding ring similar to the principle of "point discharge". This sharp angle design allows static electricity to dissipate more quickly, reducing damage to the microphone diaphragm, helping to reduce microphone feedback and adjust the tone return. Simultaneously, the above design also reduces the impact of surge current on the microphone as a whole, preventing electrostatic discharge damage and resulting in a more complete output audio signal. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the flexible circuit board of this utility model from one perspective of one embodiment, with some of the structure hidden.

[0016] Label Explanation:

[0017] 1. Substrate;

[0018] 2. Grounding ring;

[0019] 3. Discharge tip. Detailed Implementation

[0020] To explain in detail the technical content, objectives, and effects of this utility model, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0021] As headphones (such as wireless headphones) become increasingly thinner and lighter, the circuitry within them is becoming increasingly finer. Since headphones are devices that come into contact with the human body, they are susceptible to ESD (Electro-Static Discharge) hazards. Therefore, it is necessary to implement ESD protection at the flexible circuitry microphone and mitigate damage to the microphone diaphragm. Based on this objective, this application proposes an ESD protection circuit for flexible circuitry microphones. In other words, existing flexible circuit boards used in microphones require ESD protection, especially in devices that come into contact with the human body, such as wireless headphones, where ESD protection needs to be considered from the initial design stage. For this purpose, please refer to... Figure 1This utility model provides a flexible circuit board for a microphone, which includes a substrate 1 and a grounding line disposed on the substrate. A grounding ring 2 is disposed on the substrate and is electrically connected to the grounding line. A discharge tip 3 is disposed on the outer circumference of the grounding ring and extends in a direction away from the center of the grounding ring.

[0022] As described above, the beneficial effects of this invention are as follows: a discharge tip 3 is provided on the outer periphery of the grounding ring 2, extending away from the grounding ring 2 to form a sharp angle design on the grounding ring 2 similar to the principle of "point discharge". This sharp angle design acts like a lightning rod, releasing charge through the discharge tip 3, allowing static electricity to dissipate more quickly, thus reducing damage to the microphone diaphragm, helping to reduce microphone feedback, and adjusting the tone return. Simultaneously, this design also reduces the impact of surge current on the microphone as a whole, preventing electrostatic discharge damage and making the output audio signal more complete. It should be noted that both the grounding ring and the grounding line are grounded. Static electricity is conducted to the grounding ring and grounding line through the discharge tip, and then to the grounding terminal, thereby reducing damage to the microphone diaphragm. In practical applications, the grounding line is connected so that the grounding ring and grounding line together form a complete electrostatic discharge system, ensuring effective static electricity release.

[0023] Furthermore, the flexible circuit board of this invention includes a plurality of discharge tips 3, which are evenly spaced along the circumference of the grounding ring. It should be noted that in practical applications, the number of discharge tips and their positions on the grounding ring can be selected according to actual conditions and are not limited here. Furthermore, in the flexible circuit board of this invention, the distance between two adjacent discharge tips is at least 5 mm.

[0024] Furthermore, in the flexible circuit board described in this utility model, the discharge tip is a triangular tip, and the base of the discharge tip is connected to the grounding ring. This triangular tip has only one sharp corner.

[0025] Furthermore, in the flexible circuit board described in this utility model, the discharge tip is in the shape of an isosceles triangle, and the length of the two sides of the discharge tip is 1mm.

[0026] As described above, the discharge tip 3 is shaped like a triangular tip, thus forming a corresponding sharp angle design, so as to release the charge through the discharge tip 3 and reduce damage to the microphone diaphragm.

[0027] Furthermore, in the flexible circuit board described in this utility model, the discharge tip 3 is made of copper, and the grounding ring is made of copper.

[0028] Furthermore, in the flexible circuit board of this utility model, the grounding ring is disposed through the substrate, and the grounding ring can be circular.

[0029] Furthermore, in the flexible circuit board described in this utility model, the discharge tip includes multiple sharp corners. In practical applications, it may include two sharp corners, both of which can be located at the end of the discharge tip away from the grounding ring; it may also include three sharp corners, which are sequentially arranged at the end of the discharge tip away from the grounding ring; or it may include five sharp corners. It should be noted that the number and position of the sharp corners on each discharge tip can be selected according to the actual situation, and the shape of the end of the discharge tip near the grounding ring can be set according to the actual situation, without limitation here.

[0030] Accordingly, another objective of this invention is to design a microphone that includes the flexible circuit board described above.

[0031] Please refer to Figure 1 One embodiment of this utility model is a flexible circuit board for a microphone, comprising a substrate 1 and a grounding line disposed on the substrate 1. A grounding ring 2 is disposed on the substrate 1 and is electrically connected to the grounding line. The grounding ring is generally circular, and a discharge tip 3 is disposed on the outer periphery of the grounding ring, extending away from the center of the grounding ring. It should be noted that the discharge tip 3 is triangular in shape, with one side of the triangular discharge tip 3 connected to the grounding ring. In practical applications, the discharge tip 3 is an isosceles triangle, with the length of the two sides of the discharge tip 3 being 1 mm. Furthermore, it should be noted that both the discharge tip 3 and the grounding ring are made of copper.

[0032] In summary, the flexible circuit board for microphones provided by this invention meets the ESD (electrostatic discharge) requirements of FPC microphones. By adding a pointed corner design similar to the principle of "point discharge" to the grounding ring, this design acts like a lightning rod, releasing charge. This reduces damage to the microphone diaphragm, helps reduce microphone feedback, adjusts tone feedback, minimizes the impact of surge current on the microphone as a whole, prevents electrostatic discharge damage, and ensures complete audio signal output. In other words, it helps ensure ESD discharge of the microphone, reducing damage to the microphone diaphragm and harm to the human body.

[0033] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent modifications made based on the content of this utility model specification and drawings, or direct or indirect applications in related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A flexible circuit board for use in a microphone, characterized in that, It includes a substrate and a grounding line disposed on the substrate. A grounding ring is provided on the substrate and is electrically connected to the grounding line. A discharge tip is provided on the outer circumference of the grounding ring and extends in a direction away from the center of the grounding ring.

2. The flexible circuit board according to claim 1, characterized in that, It includes multiple discharge tips, which are evenly distributed along the circumference of the grounding ring.

3. The flexible circuit board according to claim 2, characterized in that, The distance between two adjacent discharge tips should be at least 5 mm.

4. The flexible circuit board according to claim 1, characterized in that, The discharge tip is made of copper.

5. The flexible circuit board according to claim 1, characterized in that, The grounding ring is made of copper.

6. The flexible circuit board according to claim 1, characterized in that, The discharge tip is a triangular tip, and the base of the discharge tip is connected to the grounding ring.

7. The flexible circuit board according to claim 6, characterized in that, The discharge tip is in the shape of an isosceles triangle, and the length of the two sides of the discharge tip is 1 mm.

8. The flexible circuit board according to claim 1, characterized in that, The grounding ring is disposed through the substrate.

9. The flexible circuit board according to claim 1, characterized in that, The discharge tip includes multiple sharp corners.

10. A microphone, characterized in that, Including the flexible circuit board as described in any one of claims 1-9.

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