| abstract |
An electromagnetic drive mechanism includes a first member, a second member, an electromagnetic drive assembly and a membrane, wherein the second member is movably connected to the first member. The electromagnetic drive assembly includes a magnet and a coil, which are respectively disposed on the first and second members to drive the second member to move relative to the first member. The aforementioned thin film is formed on the aforementioned second member, wherein the aforementioned thin film has a positive magnetic susceptibility. |