Patent ID: 7833829
Filing Date: 2010-11-16
Classification: B81C,H01L,Y10S

Abstract:
1. A Micro ElectroMechanical Systems wafer comprising: a glass layer having a first surface and a second surface, the glass layer having at least one reference feature; a metallic layer having a first surface and a second surface, the first surface coupled to the first surface of the glass layer, the metallic layer having at least two windows extending through the metallic layer and operable to transmit light therethrough, the at least two windows arranged to permit optical detection of the at least one reference feature of the glass layer; a plurality of MEMS components coupled to the second surface of the glass layer, and a bump pattern arranged on the second surface of the metallic layer, the bump pattern optically aligned with the plurality of MEMS components using the at least two windows located in the metallic layer to optically locate the at least one reference feature of the glass layer.