Circuit board with strong anti-interference performance and display module

Abstract

The utility model discloses a circuit board with strong anti-interference performance and a display module. The circuit board with strong anti-interference performance comprises a high-temperature-resistant insulating film layer, a circuit board and an anti-interference layer, a component area is arranged on the circuit board, the high-temperature-resistant insulating film layer is attached to the component area, the anti-interference layer is arranged on the side, away from the circuit board, of the high-temperature-resistant insulating film layer, and the anti-interference layer is arranged above the high-temperature-resistant insulating film layer and the circuit board, so that the circuit board can shield interference of external electromagnetic waves. The anti-interference performance and the reliability of the circuit on the circuit board are improved, and the circuit board can stably operate for a long time in various severe environments.

Description

Technical Field

[0001] The utility model relates to the field of display screens, in particular to a circuit board and a display module with strong anti-interference performance. Background Art

[0002] In the prior art, the circuits on the FPC are vulnerable to conductive interference inside the device during operation. Therefore, an insulating protective layer is covered above the FPC component area to prevent the FPC from being externally interfered by electricity. Since the FPC generates a lot of heat during long-term operation, this insulating protective layer is heat-resistant. However, the components in the component area are still affected by external electromagnetic wave interference, and the reliability is not good. Summary of the Utility Model

[0003] The purpose of the utility model is to overcome the deficiencies in the prior art and provide a kind of @.

[0004] The purpose of the utility model is realized by the following technical solutions:

[0005] A circuit board with strong anti-interference performance, comprising: a heat-resistant insulating film layer, a circuit board, and an anti-interference layer; a component area is arranged on the circuit board, the heat-resistant insulating film layer is attached to the component area, and the anti-interference layer is arranged on the side of the heat-resistant insulating film layer away from the circuit board, and the anti-interference layer is used to shield the interference of electromagnetic waves to the circuit board.

[0006] In one of the embodiments, the circuit board is an FPC.

[0007] In one of the embodiments, a steel sheet is arranged on the opposite side of the FPC in the component area.

[0008] In one of the embodiments, the material of the anti-interference layer is a nano-wave absorbing material.

[0009] In one of the embodiments, the material of the anti-interference layer is a fluorine-free and boron-free glass fiber material.

[0010] A display module, comprising the above-mentioned circuit board with strong anti-interference performance, a display component, and a backlight component; one end of the circuit board with strong anti-interference performance is bonded to the backlight component, and the display component is arranged on the side of the circuit board with strong anti-interference performance away from the backlight component.

[0011] In one of the embodiments, the display component includes a cover plate, a display screen, and an optical adhesive, and the cover plate is bonded to the display screen through the optical adhesive.

[0012] In one of the embodiments, the optical adhesive is an OCA adhesive.

[0013] In one embodiment, the display screen is an LCD liquid crystal screen.

[0014] In one embodiment, the cover plate is a TP cover plate.

[0015] Compared with the prior art, the present utility model has at least the following advantages:

[0016] The circuit board and display module with strong anti-interference ability of the present utility model are provided with a high-temperature resistant insulating film layer, a circuit board and an anti-interference layer. The anti-interference layer can shield the interference of electromagnetic waves on the circuit board. The anti-interference layer is arranged above the high-temperature resistant insulating film layer, so that the circuit board can shield the interference of external electromagnetic waves, improve the anti-interference ability and reliability of the circuit on the circuit board, and ensure that the circuit board can operate stably for a long time in various harsh environments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings required to be used in the embodiments will be briefly introduced below.

[0018] Figure 1 It is a schematic cross-sectional structure diagram of the circuit board with strong anti-interference ability in the component area in one embodiment of the present utility model;

[0019] Figure 2 It is a schematic structure diagram of the circuit board with strong anti-interference ability in one embodiment of the present utility model.

[0020] Reference numerals:

[0021] Circuit board 10, component area 11, high-temperature resistant insulating film layer 20, anti-interference layer 30. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] To facilitate the understanding of the present utility model, the present utility model will be described more comprehensively below with reference to the relevant drawings.

[0023] The present application provides a circuit board with strong anti-interference ability. Please refer to Figure 1 , including: a high-temperature resistant insulating film layer 20, a circuit board 10, and an anti-interference layer 30. The high-temperature resistant insulating film layer 20 is made of an electrically insulating material and can withstand high temperatures. Preferably, the high-temperature resistant insulating film layer 20 is PI555. The anti-interference layer 30 can shield electromagnetic waves and improve the anti-interference ability of the circuit board 10 against external electromagnetic waves. Please refer to Figure 1 and Figure 2, a component area 11 is provided on the circuit board 10. The component area 11 is used for soldering components. Workers can connect the components through specific circuit connection relationships to form a circuit with specific functions, which can cooperate with the device program to achieve product functions. The high-temperature resistant insulating film layer 20 is attached to the component area 11 to prevent the components in the component area 11 from being affected by external electrical interference and causing product function disorders. Moreover, an anti-interference layer 30 for shielding electromagnetic waves is provided on the side of the high-temperature resistant insulating film layer 20 away from the circuit board 10. The anti-interference layer 30 is arranged above the high-temperature resistant insulating film layer 20, enabling the circuit board 10 to shield external electromagnetic wave interference, improving the anti-interference performance and reliability of the circuit on the circuit board 10, and ensuring that the circuit board 10 can operate stably for a long time in various harsh environments.

[0024] Preferably, the circuit board 10 is an FPC. The FPC is soft in texture and can be bent, reducing the lateral area of the product and making the structure more compact.

[0025] Furthermore, since the FPC is relatively soft and has poor support, when components are soldered on the component area 11 of the FPC, the FPC bends due to its own weight, which may cause damage to the FPC in the long term and is not conducive to fixing the FPC in the product. Therefore, a steel sheet is provided on the opposite side of the component area 11 of the FPC to reinforce the component area 11 and improve the support.

[0026] In one embodiment, the material of the anti-interference layer 30 is a nano-wave absorbing material. The nano-wave absorbing material is mainly composed of resin, magnetic absorbent and other additives, and has excellent wave absorbing performance. It can effectively absorb electromagnetic waves from different frequency bands, effectively solve the interference problem of interference signal waves affecting the normal operation of FPC components, convert electromagnetic wave and other signal interference waves into heat energy for consumption, thereby improving the anti-interference performance of the circuit board 10. At the same time, the nano-wave absorbing material also has good impact resistance and high temperature resistance, which can ensure that the FPC can operate stably for a long time in various harsh environments.

[0027] In another embodiment, the material of the anti-interference layer 30 is a fluorine-free and boron-free glass fiber material. The fluorine-free and boron-free glass fiber is mainly composed of resin, fluorine-free and boron-free glass fiber and other additives, and has the characteristics of high temperature resistance, corrosion resistance, heat insulation, sound insulation and good insulation. The fiber structure of the fluorine-free and boron-free glass fiber material plays an important role in the sound absorption effect. The internal fiber network forms a complex pore structure, which can absorb and dissipate the energy of the wave band. Furthermore, this fiber structure can provide a larger surface area, causing the wave band friction to be lost in the fiber structure, so that the touch screen can work stably in harsh working environments.

[0028] The present application further provides a display module, which includes the above-mentioned circuit board with strong anti-interference ability, a display component and a backlight component. One end of the circuit board with strong anti-interference ability is bonded to the backlight component, and the display component is arranged on the side of the circuit board with strong anti-interference ability away from the backlight component.

[0029] Further, the display component includes a cover plate, a display screen and an optical adhesive. The cover plate is bonded to the display screen through the optical adhesive. A visible area and a non-visible area are provided on the cover plate, and a touch control circuit can also be arranged on the visible area, so that the display module becomes a touch screen that can be touch-operated. Preferably, the display screen is an LCD liquid crystal screen.

[0030] Still further, the optical adhesive is an OCA adhesive. The OCA adhesive is an adhesive cured by ultraviolet irradiation, which has high light transmittance and high adhesion strength, and can quickly bond the cover plate and the display screen, thereby ensuring the display effect of the display module.

[0031] In addition, the cover plate is a TP cover plate.

[0032] The above-described embodiments only represent several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the utility model patent shall be subject to the appended claims.

Claims

1. A circuit board with strong anti-interference ability, characterized in that, Including: A high-temperature resistant insulating film layer, a circuit board, and an anti-interference layer; A component area is provided on the circuit board, the high-temperature resistant insulating film layer is attached to the component area, the anti-interference layer is provided on the side of the high-temperature resistant insulating film layer away from the circuit board, and the material of the anti-interference layer is a nano-wave absorbing material or a fluorine-free and boron-free glass fiber material.

2. The circuit board with strong anti-interference ability according to claim 1, wherein, The circuit board is an FPC.

3. The circuit board with strong anti-interference ability according to claim 2, characterized in that, A steel sheet is provided on the opposite side of the FPC to the component area.

4. A display module, comprising the circuit board with strong anti-interference ability according to any one of claims 1-3, characterized in that, It further includes a display component and a backlight component; One end of the circuit board with strong anti-interference is bound to the backlight component, and the display component is arranged on the side of the circuit board with strong anti-interference away from the backlight component.

5. The display module according to claim 4, wherein The display component includes a cover plate, a display screen, and an optical adhesive, and the cover plate is bonded to the display screen through the optical adhesive.

6. The display module according to claim 5, wherein, The optical adhesive is an OCA adhesive.

7. The display module according to claim 5, characterized in that The display screen is an LCD liquid crystal screen.

8. The display module according to claim 5, wherein The cover plate is a TP cover plate.

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