Abstract: Disclosed is an EMI shielding material. The EMI shielding material includes a resin material and metal particles mixed with each other, and the surface of the metal particles has an insulating protective layer. Further disclosed is a communication module product, including a module element arranged on a substrate, and the periphery of the module element that requires EMI shielding is filled with said shielding material. Further disclosed is an EMI shielding process, including the following steps: a. preparing a communication module on which a module element is provided; and b. applying said shielding material to a region of the module element that needs to be EMI shielded on the communication module. The shielding material shields a chip region in a wrapping manner, that is, the shielding material wraps and shields all six surfaces or six directions of the chip, and provides shielding between chips.

Abstract: A method for packaging a chip and a chip packaging structure. A passivation layer is provided on bonding pads of a wafer, a first metal bonding layer is formed on the passivation layer, and a second metal bonding layer is formed on a substrate. The substrate and the wafer are bonded via the first metal bonding layer and the second metal bonding layer, and are packaged as a whole. A first shielding layer is provided on the substrate, and the first shielding layer is in contact with the second metal bonding layer. After the wafer and the substrate are bonded, the wafer is subject to half-cutting to expose the first metal bonding layer. Then, the second shielding layer electrically connected to the first metal bonding layer is formed.