Improved speaker apparatus

摘要

An actuator array for generating sound, the actuator array comprising at least one actuator device, the at least one actuator device including: €¢ a latching electrode (4450);
€¢ a flexure (4430) comprising one or more flexible elements peripheral to and integrally formed with a central portion, the central portion being configured to travel back and forth along a respective axis perpendicular to the latching electrode (4450) in response to an electrostatic force generable by applying a voltage between the latching electrode (4450) and the flexure (4430);
€¢ an insulation layer (4440) separating the latching electrode (4450) from the flexure (4430); and
€¢ a controller operative to use said electrostatic force to selectively latch the central portion of the flexure (4430) with the latching electrode (4450).