Patent ID: 8748291

Claim:
A method, comprising: testing a strip of MEMS devices formed on a common substrate having an internal surface and an external surface, each MEMS device including a die of semiconductor material coupled to the internal surface of the common substrate, and a protection material configured to cover the die, the testing including: detecting output values generated by each of the MEMS devices in response to a testing stimulus; and before the detecting, partially separating contiguous MEMS devices in the strip, the separating including: forming a separation trench between the contiguous MEMS devices, the separation trench extending through an entire thickness of the protection material and through a surface portion of the substrate, starting from the internal surface of the substrate; and electrically insulating the contiguous MEMS devices by removing the surface portion of the substrate; and forming electrical connections between the contiguous MEMS devices in the surface portion of the substrate, forming the electrical connections includes forming plating traces and a common plating bar, the plating traces being coupled to the common plating bar, the plating bar forming a boundary between the contiguous MEMS devices; and the separating including removing the plating bar and a part of the plating traces coupled to the plating bar.