Patent ID: 6069392
Filing Date: 2000-05-30
Classification: B81B

Abstract:
An actuator membrane, comprising:a support substrate having a back side, wherein said back side is formed with an opening for receiving deflecting force;a first layer of structural material formed on said support substrate and connected to said support substrate at a first location near an outer perimeter of said first layer and having an inner perimeter proximate said opening;an intermediate layer of structural material, on top of said first layer, said intermediate layer being connected to said first layer at a second location near said inner perimeter of said first layer;another layer of structural material on top of said intermediate layer, said another layer being connected to said intermediate layer at a third location near an outer perimeter of said intermediate layer;wherein said first layer and said intermediate layer are separated by a first space to allow deflection of said first layer; andsaid intermediate layer and said another layer are separated by a second space to allow deflection of said intermediate layer.