Overdrive structures for flexible electrostatic switch
A MEMS (Micro Electro Mechanical System) electrostatically operated high voltage switch or relay device is provided. These devices can switch high voltages while using relatively low electrostatic operating voltages. The MEMS device comprises a substrate, a substrate electrode, and one or more substrate contacts. The MEMS device also includes a flexible composite overlying the substrate, one or more composite contacts, and at least one insulator. The switch or relay device is provided overdrive potential through protrusions on the contact surface of the switch or relay contacts. In one embodiment the substrate contacts define protrusions on the contact surface that extend toward the flexible composite contacts. In another embodiment the flexible composite contacts define protrusions on the contact surface that extend toward the substrate contacts.
Goodwin, S. (2004). IPC No. U.S.Overdrive structures for flexible electrostatic switch (Patent No. 6731492.)