Production of dual electromagnetic shielding film by sputtering method

Abstract

The invention is about the splutter method to produce the electromagnetism double screened film. The process is: select the austenitic nichrome corrosion resistant target material- wash the surface and activate-metallized sputtered plating; the diameter of austenitic nichrome corrosion resistant target material is 60mm and the equivalent of chrome and the nickel is 18,7. The austenitic has the fast spluttered film forming speed because it is the paramagnetic body. So the film has the function of the magnetic screen and the electric shielding.

Description

technical field

[0001] The invention belongs to the technical field of novel anti-electromagnetic interference (EMI) shielding, and in particular relates to a sputtering preparation method of an electromagnetic double shielding film. Background technique

[0002] With the development of electronic systems towards thinner and miniaturization, most electronic system boxes now use plastic boxes. Plastic has the advantages of good plasticity, mass production in a short period of time, and insulation. However, the anti-EMI effect of plastic is poor. It is necessary to coat a layer of material with high conductivity or high magnetic permeability on a certain area of ​​the plastic surface after molding to achieve electromagnetic The effect of shielding, such as mobile phones, PDAs, laptops, set-top boxes, etc. of digital products, they must be coated with anti-EMI film material on the inner surface of the plastic box, that is, to metallize the plastic, which is the current high-fre...