Patent ID: 7545662

Claim:
A semiconductor structure with an inter-cell and an inter-module radiation interference shielding mechanism comprising: a first circuit module formed over a substrate and producing a radiation field, the first circuit module including one or more memory cells; a dielectric layer formed over the first circuit module; at least one inter-cell radiation shielding wall placed between a radiation source of the memory cells and a circuit element vulnerable to a radiation field of the radiation source for reducing an inter-cell radiation interference, wherein the inter-cell radiation shielding wall further comprises a trench filled with a magnetic shielding material and formed through the dielectric layer into the substrate; a second circuit module interfered by the radiation field produced by the first circuit module; and at least one inter-module radiation shielding wall disposed between the first and second circuit modules that is substantially tangential to the radiation field for reducing the inter-module radiation interference.