Actuator for distributed mode loudspeaker with extended damper and systems including the same

A system, comprising:

• a panel extending in a plane;
• an actuator attached to a surface of the panel, the actuator comprising:
• a plate adapted to create a force to cause vibration of a panel to generate sound waves during operation of the actuator, the plate having a width, WT, along a first direction at a first edge of the plate, the first edge being parallel to the first direction, and a length, LT, along a second direction orthogonal to the first direction, where WT is less than LT;
• a stub being attached to the plate at the first edge, the stub having a width, WS, along the first direction at a region of attachment to the plate that is less than WT, a midpoint of the stub along its width being offset from a midpoint of the first edge along its width, the stub being configured to connect to the panel to transfer the force from the plate to the panel during operation of the actuator;
• and
• a compliant member supported by a surface of the plate facing the panel and extending from the plate to contact the panel when the stub is connected to the panel;
• and
• an electronic control module in electrical communication with the actuator and programmed to activate the actuator during operation of the system to cause the vibration of the panel.

A mobile device, comprising:

• an electronic display panel extending in a plane;
• a chassis attached to the electronic display panel and defining a space between a back panel of the chassis and the electronic display panel;
• an electronic control module housed in the space, the electronic control module comprising a processor;
• and
• an actuator housed in the space and attached to a surface of the electronic display panel, the actuator comprising:
• a plate adapted to create a force to cause vibration of a panel to generate sound waves during operation of the actuator, the plate having a width, WT, along a first direction at a first edge of the plate, the first edge being parallel to the first direction, and a length, LT, along a second direction orthogonal to the first direction, where WT is less than LT;
• a stub being attached to the plate at the first edge, the stub having a width, WS, along the first direction at a region of attachment to the plate that is less than WT, a midpoint of the stub along its width being offset from a midpoint of the first edge along its width, the stub being configured to connect to the panel to transfer the force from the plate to the panel during operation of the actuator;
• and
• a compliant member supported by a surface of the plate facing the panel and extending from the plate to contact the panel when the stub is connected to the panel;
• and
• wherein the electronic control module is in electrical communication with the actuator and programmed to activate the actuator during operation of the mobile device to cause the vibration of the electronic display panel.