Patent ID: 7443024

Claim:
A micro-electro-mechanical system (MEMS) package having a side double-sealing member, comprising: a base substrate, with an MEMS element provided on a surface of the base substrate; a light transmissive lid joined to the base substrate such that the lid covers the MEMS element and cooperates with the substrate to create a hollow cavity for the MEMS element, the lid also allows light to travel into and out of the cavity, said lid having a side surface portion extending around the perimeter of the lid; a dam sealing member provided on a space defined between the surface of the base substrate and the side surface of the light transmissive lid to extend substantially around the entire perimeter of the side surface of the lid, thereby to overlap the side surface portion of the lid and thus hermetically sealing the MEMS element from the external environment; and a second sealing member deposited on an exterior surface of the dam sealing member such that the second sealing member extends from the surface of the base substrate and substantially around the entire perimeter of the side surface of the lid, thus secondarily hermetically sealing the MEMS element from the external environment.