Abstract: A semiconductor device disclosed herein includes an interconnection structure over a substrate, a first magnetic layer over the interconnection structure, one or more conductive features over the first magnetic layer, a dielectric layer over the first magnetic layer and the one or more conductive features, and a second magnetic layer over the dielectric layer. In some embodiments, the one or more conductive features include a textured top surface.

Abstract: In accordance with one aspect of the present invention, an electrical sleep assistant device, which comprises a handheld case, a display panel, a plurality of biosensors, and a calculation module, is provided. The case has a surface. The display panel is disposed on the surface of the case. The plurality of biosensors are disposed on the surface of the case for collecting a plurality of physiological information. The calculation module is disposed in the case, and coupled to the display panel and the plurality of biosensors. Preferably, a plurality of buttons disposed on the surface of the case, and coupled to the calculation module.