Electromagnetic shielded film and its manufacturing method

Abstract

The invention provides a kind of electromagnetic wave shielding films including: a film substrate with transparency on optical degree more than or equal to 87% and layers of metal net at least on one surface of the film substrate. The invention also provides a method including the following steps: first, a conductive layer is formed on the surface of film substrate by a method of physical vapor deposition, next, a metal layer is shaped on the conductive one by the technique of plating; then, metal reticular figure comes into being on such film substrate by laser-cutting technique. This invention can not only reduce the consumption of mental for electromagnetic shielding and avoid the use of solidifying glue between the layers of metal and film substrate, but also decreases the process steps to lower the cost of industrial production and increase productivity effectively.

Description

technical field [0001] The invention relates to electromagnetic radiation shielding technology, in particular to a high-transparency electromagnetic wave shielding film suitable for suppressing electromagnetic wave leakage of a display device and a manufacturing method thereof. Background technique [0002] It is currently known that various electronic products (such as cathode ray tube (CRT) displays, liquid crystal displays and plasma TVs, etc.) emit electromagnetic radiation of various wavelengths that are harmful to the human body through the casing or display screen during use. This radiation will cause harm to the human body, especially if it is close to the radiation source for a long time, it may cause various physiological diseases, such as increased degree of cell lesions, malignant diseases such as cancer, goiter, leukemia, dry eyes and Cervical disease etc. [0003] In order to prevent the electromagnetic radiation leakage of the display, the current practice is...

AI Technical Summary

Problems solved by technology

However, "electroless plating" is recognized as a major hazard to the environment and consumes a lot of water and electricity

In addition, the mesh produced by this method needs to be pasted on the high-transmittance optical PET film with a cured adhesive containing organic volatiles, and the cured adhesive used for pasting will also be damaged due to the heat generated by the components and the body when the display is in use. The released organic volatiles that are harmful to the environment and the human body

Finally, the polymer woven mesh is limited by the wire diameter of the material and the shape of the woven yarn is a columnar body, so even after metallization, it still restricts and affects the electromagnetic radiation shielding effect and visual effect

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