Patent ID: 8279653

Claim:
A magnetic shift register memory arranged in a stack structure, comprising: a plurality of magnetic shift registering layers for forming an unit of stack structure, wherein each of the magnetic shift registering layers comprises a plurality of magnetic domains, each of the magnetic domains has a magnetization direction corresponding to a stored data, adjacent two of the magnetic shift registering layers respectively have an upper magnetic domain and a lower magnetic domain forming a coupling region with a coupling structure, and the coupling structure is implemented to allow a fringing field from the upper magnetic domain to induce the lower magnetic domain so that the lower magnetic domain and the upper magnetic domain have the same stored data, wherein the magnetic shift registering layers are divided into a first group and a second group, wherein the magnetic shift registering layers of the first group are interlaced with the magnetic shift registering layers of the second group; and a driving current unit coupled to the magnetic shift registering layers for respectively providing a first driving current having a first direction on the first group and a second driving current having a second direction opposite to the first direction on the second group, wherein each of the magnetic shift registering layers has a current input end and a grounded end, and the first driving current or the second driving current just flows in each corresponding one of the magnetic shift registering layers, so that the stored data in the magnetic domains of the magnetic shift registering layers is moved in a flow direction, wherein the stored data at the upper magnetic domain is passed to the lower magnetic domain.