Patent ID: 8593239

Claim:
A MEMS structure comprising: a flexible membrane including a main longitudinal axis defining a longitudinal direction; at least one pillar under the flexible membrane; electric lowering actuation means adapted to bend down the flexible membrane into a down forced state; and electric raising actuation means adapted to bend up the flexible membrane into an up forced state; wherein the membrane includes a flexible functional part that is positioned above said at least one pillar and is adapted to be bent down or up by a lever effect on said at least one pillar; wherein the membrane includes at least one flexible lateral non-functional part that is outside said at least one pillar in a transverse direction, and extends on both sides of said at least one pillar in the longitudinal direction; wherein an actuation area of the electric lowering actuation means or an actuation area of the electric raising actuation means extends under said at least one lateral non-functional part and is adapted to exert pulling forces on said at least one lateral non-functional part of the membrane simultaneously on both sides of said at least one pillar in the longitudinal direction; wherein the at least one flexible lateral non-functional part is laterally offset from the at least one pillar and is partially aligned with the at least one pillar in the transverse direction; and wherein the at least one flexible lateral non-functional part extends further in the longitudinal direction than the at least one pillar.