Patent ID: 11971315
Assignee: DAEGU GYEONGBUK INSTITUTE OF SCIENCE AND TECHNOLOGY
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. The force sensor according to claim 1, wherein the first permanent magnet layer and the second permanent magnet layer are formed in a surface shape, a plurality of magnetic tunnel junctions are disposed to be spaced apart from each other by a preset space on the first permanent magnet layer, a partial region, to which a pressure is applied from outside, the second permanent magnet layer moves in a direction of the first permanent magnet layer, and, when a magnetic field strength formed between a partial region of the second permanent magnet layer and the first permanent magnet layer is formed to a preset strength or more according to a movement of the partial region of the second permanent magnet layer, the magnetic tunnel junctions sense the pressure based on a total resistance value, which comprises a changed resistance value of at least one magnetic tunnel junction corresponding to the partial region of the second permanent magnet layer, of the magnetic tunnel junctions and a preset threshold resistance value.