Patent ID: 8597985
Filing Date: 2013-12-03
Classification: B81C

Abstract:
1. A wafer-level process for packaging microelectromechanical (MEMS) devices, comprising: bonding a lid wafer to a MEMS wafer in a predetermined aligned relationship; and removing portions of the lid wafer to separate the lid wafer into lid portions that respectively correspond in alignment with MEMS devices on the MEMS wafer, wherein said removing also exposes areas of the MEMS wafer that respectively contain sets of bond pads respectively coupled to the MEMS devices, wherein said removing includes thinning the lid wafer after said bonding, and wherein said removing includes, before said bonding and based on said predetermined aligned relationship, producing cavities in respective areas of the lid wafer that respectively correspond in alignment with said areas of the MEMS wafer, and wherein said thinning opens respective ends of the cavities.