Patent ID: 11884535
Assignee: XMEMS LABS, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC B  H | IPC B  H

Claim 15:
16. A device, comprising:
a membrane, comprising an anchored end and a free end; and
an actuator disposed on the membrane and configured to actuate the membrane;
wherein the device is disposed on a base;
wherein the membrane is actuated to hold the free end at a position, such that a segment of the membrane from the anchored end to the free end remains a flat position and parallel to the base, when a constant bias voltage is applied on the actuator;
wherein the membrane hangs down and below the flat position when the actuator receives a ground voltage or is floating;
wherein the actuator receives a first signal which is unipolar with respect to the ground voltage, the first signal comprises a DC (direct current) component and an AC (alternating current) component, the DC component is the constant bias voltage which holds the membrane at the flat position, and a displacement of the membrane is linear with the AC component of the first signal;
wherein the displacement of the membrane with respect to the flat position is corresponding to the AC component with respect to the ground voltage.