An apparatus with an anti-interference circuit board

Abstract

This utility model discloses a device with an anti-interference circuit board, comprising a main body, a display screen, and a circuit board disposed on one side of the display screen. The circuit board includes a central plate corresponding to the display screen and a folding plate connected to the central plate that can be bent, retracted, or unfolded. The central plate has a copper foil layer for preventing signal absorption during device operation. The copper foil is located on the central plate. When the folding plate is retracted into the central plate, it ensures signal stability of the circuit components on the folding plate and prevents GPS signals from being absorbed by radio frequency emitted by inductors / capacitors on the ribbon cable, thus affecting signal reception and processing.

Description

[Technical Field] This utility model relates to the field of printed circuit technology, and in particular to a device with an anti-interference circuit board. [Background Technology] Flexible printed circuit boards (FPCs), using polyimide (PI) or polyester (PET) films as substrates, have become a key solution for the miniaturization and integration of modern electronic devices due to their high flexibility, thinness, and bendability. Compared to traditional rigid circuit boards, FPCs can be freely bent, rolled, or folded in three-dimensional space, significantly optimizing space utilization. They are particularly suitable for applications requiring dynamic deformation, such as smartphone hinges, wearable devices, and medical electronics.

[0003] In flexible circuit board integration design, GPS signal transmission often suffers from radio frequency interference (RF) problems due to the cabling layout. At high frequencies, the magnetic field radiation from the inductor coil coupled with the electric field of the capacitor plates in the distributed inductor / capacitor components creates near-field resonance, leading to nonlinear absorption of RF energy. This directly weakens the GPS signal strength and reduces receiver sensitivity. Therefore, a device with an anti-interference circuit board is needed. [Utility Model Content] To solve the above-mentioned technical problems, this utility model proposes a device with an anti-interference circuit board.

[0005] This utility model is achieved by the following technical solution: A device with an anti-interference circuit board includes a device body, the device body including a display screen and a circuit board disposed on one side of the display screen, the circuit board including a center plate corresponding to the display screen and a folding plate connected to the center plate that can be bent and stored or unfolded, the center plate being provided with a layer of copper foil for preventing signal absorption when the device is working.

[0006] The copper foil is located on the central plate. When the folded plate is stored in the central plate, it can ensure the signal stability of the circuit components on the folded plate, and at the same time prevent the GPS signal from being absorbed by the radio frequency emitted by the inductor / capacitor on the ribbon cable, which would affect the signal reception and processing.

[0007] In the device with an anti-interference circuit board as described above, the size of the copper foil corresponds to that of the center plate.

[0008] As described above, the device with an anti-interference circuit board includes a first plate connected to one side of the center plate and a second plate connected to the other side of the center plate. A first bending portion is provided between the first plate and the center plate to facilitate bending, and a second bending portion is provided between the second plate and the center plate to facilitate bending. Both the first bending portion and the second bending portion have a single-layer area that has been softened.

[0009] As described above, the device with an anti-interference circuit board has electromagnetic films on both sides of the first board and the second board to prevent electromagnetic signals from interfering with the normal operation of electrical components.

[0010] As described above, in the device with an anti-interference circuit board, the first board has a first component area on one side for mounting components, and the second board has a second component area on one side for mounting components.

[0011] As described above, in the device with an anti-interference circuit board, a first reinforcing steel plate is provided on the other side of the first board at a location corresponding to the first component area, and a second reinforcing steel plate is provided on the other side of the second board at a location corresponding to the second component area.

[0012] As described above, the device with an anti-interference circuit board includes a first connecting plate connected to the center plate and a second connecting plate connected to the first connecting plate that can be bent and stored or unfolded. A third bending portion with a softening treatment is provided between the first connecting plate and the second connecting plate. The first plate includes a first connecting structure located on the other side of the third bending portion and corresponding to the position of the third bending portion.

[0013] As described above, the device with an anti-interference circuit board has a connector on one side of the second connecting plate and a third reinforcing steel plate on the other side corresponding to the position of the connector 35.

[0014] As described above, the device with an anti-interference circuit board has a second connection structure on the same side as the center plate for maintaining the stability of the circuit board after storage, and a third connection structure on the same side as the center plate for maintaining the stability of the circuit board after storage.

[0015] The device with an anti-interference circuit board as described above, wherein the circuit board is made of polyimide or polyester material.

[0016] Compared with the prior art, the device with an anti-interference circuit board proposed in this utility model has the following beneficial effects: 1. The copper foil is located on the central plate. When the folding plate is stored in the central plate, it can ensure the signal stability of the circuit components on the folding plate, and at the same time prevent the GPS signal from being absorbed by the radio frequency emitted by the inductor / capacitor on the ribbon cable, which would affect the signal reception and processing. 2. The folding plate can be unfolded outwards, and the first plate can be further unfolded into the first connecting plate and the second connecting plate, which can provide various installation methods and realize the circuit design layout. [Attached Image Description] To more clearly illustrate the technical solutions in the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0018] Figure 1 This is a schematic diagram from one perspective of the unfolded state of this utility model; Figure 2 for Figure 1 Another perspective illustration; Figure 3 This is a schematic diagram of the present invention in its stored state.

[0019] The corresponding reference numerals in the attached figures are as follows: 1. Main body of the equipment; 11. Display screen; 12. Circuit board; 121. Center plate; 122. Folding plate; 2. Copper foil; 3. First plate; 31. First bending section; 32. First component area; 33. First reinforcing steel plate; 34. First connecting plate; 341. Second connecting structure; 35. Second connecting plate; 351. Connector; 352. Third reinforcing steel plate; 36. Third bending section; 37. First connecting structure; 4. Second plate; 41. Second bending section; 42. Second component area; 43. Second reinforcing steel plate; 44. Third connecting structure; 5. Single-layer area; 6. Electromagnetic membrane.

Detailed Implementation Methods

[0021] Specific embodiments, combined with Figures 1 to 3As shown, further illustrating the technical solution of this utility model, a device with an anti-interference circuit board includes a device body 1. The device body 1 includes a display screen 11 and a circuit board 12 disposed on one side of the display screen 11. The circuit board 12 includes a center plate 121 corresponding to the display screen 11 and a folding plate 122 connected to the center plate 121 that can be bent and stored or unfolded. The center plate 121 is provided with a copper foil 2 to prevent signal absorption when the device is working. The folding plate 122 can be bent and unfolded for easy debugging and assembly, and can also be bent and stored in the center plate 121. In addition, the copper foil 2 is located on the center plate 121. When the folding plate 122 is stored in the center plate 121, it can ensure the signal stability of the circuit components on the folding plate 122, and at the same time prevent the GPS signal from being absorbed by the radio frequency emitted by the inductor / capacitor on the ribbon cable, which would affect the signal reception and processing.

[0022] Optionally, the display screen 11 and the circuit board 12 can be applied to devices such as electronic watches.

[0023] Furthermore, as a preferred embodiment of this solution and not a limitation, the size of the copper foil 2 corresponds to that of the central plate 121. The copper foil 2 completely covers the central plate 121, which can form a Faraday cage effect and prevent the CPS signal from being absorbed by the materials inside the product.

[0024] In this embodiment, the folding plate 122 includes a first plate 3 connected to one side of the central plate 121 and a second plate 4 connected to the other side of the central plate 121. A first bending portion 31 for easy bending is provided between the first plate 3 and the central plate 121, and a second bending portion 41 for easy bending is provided between the second plate 4 and the central plate 121. Both the first bending portion 31 and the second bending portion 41 have a softened single-layer area 5. The folding plate 122 has multiple pins for connecting circuits. The softened single-layer area 5 further optimizes the stress at the first bending portion 31 and the second bending portion 41, preventing stress tension from causing the anisotropic conductive adhesive film to peel off and fail. This facilitates bending between the first plate 3, the second plate 4, and the central plate 121, ensuring the normal operation of the circuit board 12.

[0025] Furthermore, as a preferred embodiment of this solution and not a limitation, both sides of the first plate 3 and the second plate 4 are provided with electromagnetic films 6 to prevent electromagnetic signals from interfering with the normal operation of electrical components. The electromagnetic films 6 can prevent electromagnetic signals from interfering with the normal operation of electrical components, ensuring the normal operation of the circuit board 12.

[0026] Furthermore, as a preferred embodiment of this solution and not a limitation, the first board 3 has a first component area 32 for mounting components on one side, and the second board 4 has a second component area 42 for mounting components on one side. Devices are mounted to the first component area 32 and the second component area 42 respectively using adhesive. The areas for mounting integrated circuit chips are responsible for core functions such as signal processing and control. Furthermore, as a preferred embodiment of this solution and not a limitation, a first reinforcing steel plate 33 is provided on the other side of the first plate 3 at a position corresponding to the first component area 32, and a second reinforcing steel plate 43 is provided on the other side of the second plate 4 at a position corresponding to the second component area 42. The first reinforcing steel plate 33 and the second reinforcing steel plate 43 can provide mechanical support for the first component area 32 and the second component area 42 respectively, enhance local rigidity, and prevent components from being damaged by bending, vibration, or external impact of the circuit board 12.

[0027] Furthermore, as a preferred embodiment of this solution and not a limitation, the first plate 3 includes a first connecting plate 34 connected to the central plate 121 and a second connecting plate 35 connected to the first connecting plate 34, which can be bent and stored or unfolded. A third bending portion 36, which has been softened, is provided between the first connecting plate 34 and the second connecting plate 35. The first plate 3 includes a first connecting structure 37 located on the other side of the third bending portion 36, corresponding to the position of the third bending portion 36. The first plate 3 can be further unfolded into the first connecting plate 34 and the second connecting plate 35, which can provide various installation methods and realize the circuit design layout.

[0028] Furthermore, as a preferred embodiment of this solution and not a limitation, a connector 351 is provided on one side of the second connecting plate 35, and a third reinforcing steel plate 352 corresponding to the position of the connector 351 is provided on the other side of the second connecting plate 35. The third reinforcing steel plate 352 can provide mechanical support for the connector 351, enhance local rigidity, and prevent the connector 351 from being damaged by bending, vibration, or external impact.

[0029] Furthermore, as a preferred embodiment of this solution and not a limitation, the first connecting plate 34 is provided with a second connecting structure 341 on the same side as the center plate 121 for maintaining the stability of the circuit board 12 after storage, and the second plate 4 is provided with a third connecting structure 44 on the same side as the center plate 121 for maintaining the stability of the circuit board 12 after storage. Optionally, the first connecting structure 37, the second connecting structure 341, and the third connecting structure 44 are all made of double-sided adhesive, which facilitates fixing the folding plate 122 to the electronic product and ensures the normal operation of the circuit board.

[0030] Furthermore, as a preferred embodiment of this solution and not a limitation, the circuit board 12 is made of polyimide or polyester material. Polyimide material can provide structural support for the product and has high heat resistance, enabling it to withstand the high temperatures of soldering; polyester material has good flexibility, which can ensure the bending of the circuit board 12.

[0031] The working principle of this embodiment is as follows: This invention proposes a device with an anti-interference circuit board. By providing a copper foil 2 on the central plate 121 to prevent signal absorption during device operation, it can prevent GPS signals from being absorbed by radio frequency emitted by inductors / capacitors on the ribbon cable, thus avoiding affecting signal reception and processing. The specific principle is as follows: The folding board 122 can be bent and unfolded for easy debugging and assembly, and can also be bent and stored in the center board 121. In addition, the copper foil 2 is located on the center board 121. When the folding board 122 is stored in the center board 121, it can ensure the signal stability of the circuit components on the folding board 122, and at the same time prevent the GPS signal from being absorbed by the radio frequency emitted by the inductor / capacitor on the ribbon cable, which would affect the signal reception and processing. Furthermore, the first board 3 can be further unfolded into a first connecting board 34 and a second connecting board 35, which can provide various installation methods, realize the circuit design layout, and further ensure the signal stability of the circuit components on the folding board 122 while the signal is received normally.

Claims

1. An apparatus with an interference-resistant circuit board, characterized by The device includes a main body (1), which includes a display screen (11) and a circuit board (12) disposed on one side of the display screen (11). The circuit board (12) includes a center plate (121) corresponding to the display screen (11) and a folding plate (122) connected to the center plate (121) that can be bent and stored or unfolded. The center plate (121) is provided with a copper foil (2) to prevent the signal from being absorbed when the device is working.

2. The apparatus with an anti-interference circuit board according to claim 1, characterized in that, The size of the copper foil (2) corresponds to that of the center plate (121).

3. The apparatus with an anti-interference circuit board according to claim 1, characterized in that, The folding plate (122) includes a first plate (3) connected to one side of the center plate (121) and a second plate (4) connected to the other side of the center plate (121). The first plate (3) and the center plate (121) are provided with a first bending portion (31) for easy bending, and the second plate (4) and the center plate (121) are provided with a second bending portion (41) for easy bending. Both the first bending portion (31) and the second bending portion (41) are provided with a single-layer area (5) that has been softened.

4. The apparatus with an anti-interference circuit board according to claim 3, characterized in that, Both sides of the first plate (3) and the second plate (4) are provided with electromagnetic films (6) to prevent electromagnetic signals from interfering with the normal operation of electrical components.

5. The apparatus with an anti-interference circuit board according to claim 3, characterized in that, The first plate (3) has a first component area (32) for mounting components on one side, and the second plate (4) has a second component area (42) for mounting components on one side.

6. The apparatus with an interference-resistant circuit board of claim 5, wherein, A first reinforcing steel plate (33) is provided on the other side of the first plate (3) at the position corresponding to the first component area (32), and a second reinforcing steel plate (43) is provided on the other side of the second plate (4) at the position corresponding to the second component area (42).

7. The apparatus with an anti-interference circuit board according to claim 3, characterized in that, The first plate (3) includes a first connecting plate (34) connected to the center plate (121) and a second connecting plate (35) connected to the first connecting plate (34) that can be bent and stored or unfolded. A third bending portion (36) with a softening treatment is provided between the first connecting plate (34) and the second connecting plate (35). The first plate (3) includes a first connecting structure (37) located on the other side of the third bending portion (36) and corresponding to the position of the third bending portion (36).

8. The apparatus with an anti-interference circuit board according to claim 7, characterized in that, The second connecting plate (35) has a connector (351) on one side and a third reinforcing steel plate (352) on the other side corresponding to the position of the connector (351).

9. The apparatus with an anti-interference circuit board according to claim 7, characterized in that, The first connecting plate (34) is provided with a second connecting structure (341) on the same side as the center plate (121) for maintaining the position of the circuit board (12) after storage. The second plate (4) is provided with a third connecting structure (44) on the same side as the center plate (121) for maintaining the position of the circuit board (12) after storage.

10. The apparatus with an anti-interference circuit board according to claim 1, characterized in that, The circuit board (12) is made of polyimide or polyester material.

Images