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Electromagnetic shielding protection film and FPC (flexible printed circuit)

An electromagnetic shielding and protective film technology, applied in the fields of magnetic/electric field shielding, crosstalk/noise/electromagnetic interference reduction (, electronic equipment, etc., can solve the problem of increasing the difficulty of assembling the display module and the main board of the mobile phone, and the large thickness of the bending area of ​​200 , hardness and rebound force increase, etc., to achieve excellent electromagnetic shielding performance, reduce assembly difficulty, and good bending performance

Pending Publication Date: 2016-09-21
WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, some manufacturers have attached a layer of electromagnetic shielding composite film 500 to the bending area 200 in order to improve the shielding effect of the bending area 200 of the FPC. High, and the thickness of the above-mentioned electromagnetic shielding composite film 500 is relatively large, so that after the electromagnetic shielding composite film 500 is attached, the thickness of the bending area 200 becomes larger, and the hardness and rebound force also become larger, which is not conducive to bending. When the FPC is connected to the display module and the mobile phone motherboard, it will increase the difficulty of assembling the display module and the mobile phone motherboard

Method used

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  • Electromagnetic shielding protection film and FPC (flexible printed circuit)
  • Electromagnetic shielding protection film and FPC (flexible printed circuit)
  • Electromagnetic shielding protection film and FPC (flexible printed circuit)

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Embodiment Construction

[0026] In order to further illustrate the technical means adopted by the present invention and its effects, a detailed description is given below in conjunction with the preferred embodiments of the present invention and the accompanying drawings.

[0027] see image 3 , The present invention provides an electromagnetic shielding protective film 40, including an adhesive glue layer 41, a conductive material layer 42, and an insulating protective layer 43 that are stacked in sequence.

[0028] Specifically, the conductive material layer 42 is a metal thin film or a plurality of metal particles evenly distributed. Preferably, the material of the metal thin film and the metal particles is silver (Ag). The thickness of the conductive material layer 42 is 1 to 15 microns, preferably 5 microns.

[0029] Specifically, the material of the adhesive layer 41 includes epoxy resin, acrylic resin, urethane resin, silicone rubber resin, parylene resin, bismaleimide resin and at least one ...

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Abstract

The invention provides an electromagnetic shielding protection film and an FPC (flexible printed circuit). The electromagnetic shielding protection film is simple in structure, relatively thin in thickness, excellent in electromagnetic shielding performance, particularly suitable for covering the bending region of the FPC, and capable of ensuring the electromagnetic shielding effect, the relatively thin thickness and a relatively good bending performance of the bending region. According to the FPC, the bending region is covered with the electromagnetic shielding protection film to replace the conventional electromagnetic shielding composite film with a relatively high thickness, so that the electromagnetic shielding effect, the relatively thin thickness and a relatively good bending performance of the bending region can be ensured; and when the FPC provided by the invention is adopted for connecting a display module and a mobile phone main board, the assembling difficulty of the display module and the mobile phone main board can be greatly lowered.

Description

technical field [0001] The invention relates to the field of display technology, in particular to an electromagnetic shielding protective film and an FPC. Background technique [0002] Flexible circuit board (FPC, Flexible Printed Circuit), also known as flexible circuit board, is a kind of highly reliable made of polyester film or polyimide as the base material, which is made by etching to form circuits on copper foil. , a printed circuit with excellent flexibility. [0003] Since FPC is made of flexible substrates, it has many advantages that rigid printed circuit boards do not have. For example, it can be freely bent, rolled, and folded, and can be arbitrarily arranged according to the spatial layout requirements, and can be moved and stretched arbitrarily in three-dimensional space, so as to Achieve the integration of component assembly and wire connection. The use of FPC can greatly reduce the volume of electronic products, which is suitable for the needs of electroni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K9/00B32B27/06B32B27/32B32B3/02B32B15/04B32B7/12B32B33/00
CPCB32B3/02B32B7/12B32B15/04B32B27/06B32B27/32B32B33/00H05K9/0084B32B2307/212B32B2307/202B32B2457/00H05K1/0218H05K1/147H05K2201/0215H05K9/0083H05K1/028H05K9/0088B32B2307/748B32B27/08B32B5/14B32B2307/546B32B2250/04B32B2307/732B32B27/281B32B27/36B32B2307/408B32B2307/206B32B15/085B32B15/09B32B15/08B32B7/06B32B2457/208B32B5/16B32B27/14B32B15/092H05K2201/05
Inventor 曹洪睿周锦杰
Owner WUHAN CHINA STAR OPTOELECTRONICS TECH CO LTD
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