Electromagnetically driven high-density tactile interface based on a multi-layer approach

Tactile interface are deformable surfaces that communicate information through the sense of touch. We propose a new concept for a tactile interface based on a multi layer approach. This concept allows developing a new generation of tactile matrices with a high density of micro actuators and a quite simple assembling process. The concept proposed is based on electromagnetic micro actuators where coils excite a flexible magnetic membrane. Two technologies to manufacture the micro coils are presented. In the first technology the micro coils were machined by wire electro discharge machining is presented and tested. The second technology based on a PCB layer is presented. Such a device has potential applications in virtual reality, automotive industry, and interactive systems for blind persons.