Patent ID: 8610224

Claim:
A MEMS element comprising: a substrate; a MEMS structure that is disposed on the substrate, and includes a flexible member; and a laminated structure that is laminated on the substrate, and includes a plurality of layers that define a cavity containing the MEMS structure; wherein the MEMS structure is hermetically sealed in the cavity by the substrate and laminated structure; and the laminated structure comprises: a support layer that defines a size and shape of the cavity in a direction parallel to a surface of the substrate; a sealing layer that is disposed on a surface of the support layer, and comprises an etching hole that was used to form the cavity; a cap layer that is disposed on a surface of the sealing layer; a porous layer that is disposed between the sealing layer and cap layer to cover the etching hole; and an interface sealing layer that is disposed between the sealing layer and the porous layer in contact with the sealing layer and the porous layer, and is denser than any of the sealing layer and the porous layer.