Patent ID: 6984867

Claim:
A magnetic memory device having a packaged magnetic memory chip, comprising: a package structure including a magnetic memory chip; and a magnetic guide of a high-permeability magnetic material, forming a structural member of the package structure, wherein the package structure includes a lead frame on which the magnetic memory chip is bonded by a die bonding agent and a resin which seals the bonded magnetic memory chip, and wherein at least one of the lead frame, the die bonding agent and the sealing resin forms the magnetic guide containing a high-permeability magnetic material, wherein the lead frame is made of a conductive high-permeability magnetic material, wherein the high-permeability magnetic material of the lead frame includes a grain-oriented electrical steel, permalloy, a permalloy alloy with elements added, a metal crystal material, a metal amorphous foil, and a ferrite material, and wherein the metal crystal material includes sendust and Finemet.